Abstract: A physical water purifier includes a tubular housing and permanent magnets arranged at a specific distance from one another in the tubular housing in a region of the tubular housing facing a water connection. The permanent magnets are arranged so as to form a pumping and eddying effect. The permanent magnets are produced from an anisotropic magnetic material.

Abstract: Methods and apparatus for reducing deposits from a petroleum flow line are disclosed. An embodiment of an apparatus for removing deposits from a petroleum flow line may include a pipe capable of being attached to a petroleum flow line. The pipe may have a pipe axis that defines a direction for fluid flow in the petroleum flow line. The apparatus may also include a first and a second field winding circumferentially disposed around the pipe, and an electric wave generator adapted to electrically communicate an electric wave to the first field winding and the second field winding. In response to the electric wave, the first field winding is adapted to produce a first magnetic field having a first magnetic axis and the second field winding is adapted to produce a second magnetic field having a second magnetic axis. The first magnetic axis may be noncollinear with respect to the second magnetic axis, and at least the first magnetic axis may be noncollinear with respect to the pipe axis.

Abstract: A method and apparatus provide pulsed fluid treatment at a plurality of distinct points utilizing pulsed magnetic energy concentrated in a plurality of distinct areas along a fluid flow path. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.

Abstract: This invention relates to various apparatus for carrying out cake-filtration solid-liquid separation processes in which the solid-liquid mixture is subjected to a homogeneous magnetic field, a magnetic field gradient or both and cake-filtration.

Abstract: An apparatus and method for continuous separation of magnetic particles from non-magnetic fluids including particular rods, magnetic fields and flow arrangements.

Abstract: A method and apparatus of fluid treatment for a plurality of fluids with a first and a second non-magnetically conductive fluid flow conduit sleeved within at least one segment of magnetically conductive conduit providing a plurality of distinct areas of concentrated magnetic energy. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.

Abstract: A fluid control and processing system for controlling fluid flow among a plurality of chambers comprises a body including a fluid processing region continuously coupled fluidicly with a fluid displacement region. The fluid displacement region is depressurizable to draw fluid into the fluid displacement region and pressurizable to expel fluid from the fluid displacement region. The body includes at least one external port. The fluid processing region is fluidicly coupled with the at least one external port. The fluid displacement region is fluidicly coupled with at least one external port of the body. The body is adjustable with respect to the plurality of chambers to place the at least one external port selectively in fluidic communication with the plurality of chambers.

Abstract: A method and apparatus provide fluid treatment at a plurality of distinct points utilizing magnetic energy concentrated in a plurality of distinct areas along a fluid flow path and at least one region of pulsed fluid treatment within a fluid treatment chamber. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.

Abstract: A periphery of a fluid passage (1) extended through a casing (10) is enclosed by a conductive metal layer (5) formed from a non-magnetic material. Four permanent magnets (M1 to M4) are arranged along an outside surface of the inside conductive metal layer (5). The individual permanent magnets (M1 to M4) are closely spaced from each other as defining gaps (G) therebetween. The north poles and the south poles of the magnets are closely spaced from each other at a gap (G) between a first permanent magnet (M1) and a second permanent magnet (M2), and a gap (G) between a third permanent magnet (M3) and a fourth permanent magnet (M4). The permanent magnets (M1 to M4) are totally and solidly enclosed by a magnetic material layer (7).

Abstract: A magnetic separation device comprising a magnetic base and a retention mechanism, as well as a method of evacuating liquid from a well plate containing liquid and magnetic particles, are disclosed. In specific embodiments, the retention mechanism comprises one or more wire clips. In certain embodiments, the magnetic base comprises apertures configured to receive the wire clips. The retention mechanism can be configured to secure a well plate to the magnetic base so that a user may evacuate liquid from a well plate containing liquid and magnetic particles. In certain embodiments, the method comprises inverting the magnetic separation device and well plate. In particular embodiments, the method comprises rapidly and forcefully inverting magnetic separation device and well plate.

Abstract: A treatment device is for magnetically treating liquid in a liquid container. A container holder receives the liquid container. At least one permanent magnet is associated with the container holder to generate a magnetic field within the liquid in the liquid container. A treatment timer is associated with the container holder.

Abstract: Apparatus for treating a fluid in a conduit, comprising first and second core elements of magnetically conductive material adapted to be mounted to the conduit to surround same at spaced positions therealong; and means for establishing radio frequency magnetic fluxes in said core elements, for generating respective electromagnetic fields in the fluid to be treated extending from spaced positions along the conduit.

Abstract: A method of treating an orally ingestible item having an original taste to be enhanced or reduced without imparting bitterness to the item, includes exposing the item to a magnetic field and oxygen.

Abstract: A device for separating ferromagnetic particles from a suspension has a reactor (2) through which the suspension can flow, with at least one magnet (3, 4) arranged on the outside of the reactor (2), wherein the reactor (2) has an interior space (7) and an exterior space (8) surrounding the former, wherein the interior space (7) and exterior space (8) are separated from one another by an insert (6), and the insert (6) has at least one opening (9, 10) near the at least one magnet (3, 4).

Abstract: The present invention is related to devices for manipulating magnetic particles that are suspended in a fluid, possibly containing a biological entity of interest, the magnetic particles being able to bind the entity of interest, the fluid being contained in a reaction vessel constituted by a large upper compartment with a funnel shape, an elongate lower compartment with a substantially constant cross-section and a closed base. The devices are especially useful in methods for the extraction of nucleic acid to enable them for further processing.

Abstract: A magnetic separation apparatus comprising: a separation vessel into which waste water containing a coagulated magnetic floc is supplied; a drum separator that is provided in the separation vessel and adsorbs the magnetic floc with a magnetic force while being rotated; a scraper that is abutted against a surface of the separator and scrapes the magnetic floc adsorbed by the surface of the separator; a scraper guide that is connected to the scraper and discharges the magnetic floc scraped by the scraper; and a scraping brush that scrapes the magnetic floc scraped by the scraper from the scraper and guides the magnetic floc to the scraper guide, wherein a lower portion of the separator is submerged in the waste water in the separation vessel, a rotational direction of the separation vessel in the waste water is set to the same direction as a flow direction of the waste water flowing in the separation vessel, and a rotational direction of the scraping brush is set to a direction opposite to the rotational dir

Abstract: A magnetic separation plate for use in methods employing magnetic particles, said magnetic separation plate comprising a support plate and magnetic pins in a predetermined geometrical arrangement, said magnetic pins having a fastening portion, an intermediate portion and a separation portion and being fastened to said support plate at their fastening portion, wherein said magnetic pins are individually displaceable at their separation portion. The invention further provides a method for the separation of magnetic particles using the separation plate.

Abstract: A magnetic separation filtering and cleaning apparatus for adding flocculant and magnetic powder to raw water containing pollutant particles to form magnetic floc in treated fluid and separating and removing the magnetic floc from the treated fluid, comprising: a magnetic field generation device being provided in a rotating body for suctioning the magnetic floc on a surface of the rotating body from the treated fluid containing the magnetic floc, a magnetic field rotating device for rotating the magnetic field generation device, a sludge recovery device for separating sludge including the magnetic floc mechanically from the surface of the rotating body of the magnetic field generation device; and a filtering device having a rotating net for filtering out the magnetic floc from the treated fluid including the magnetic floc and flowing down the treated fluid filtered through the rotating net.

Abstract: The disclosure relates to a magnetic separating device for isolating magnetically labelled particles from a non-magnetic medium comprising a body portion (1) having a magnetising portion (3) for providing a magnetic field and a surface by means of which the body portion may stand on a supporting surface; and a sample vessel retaining portion (4) for retaining at least one sample vessel (5), wherein, the magnetising portion (3) is configured to conform at least approximately to at least a substantial portion of the longitudinal profile of at least one sample vessel (5); the sample vessel retaining portion (4) is configured to retain at least one sample vessel (5) such that at least a portion of the contents of the sample vessel (5) is visible to a user; and the sample vessel retaining portion (4) is configured to be mountable on the magnetising portion so that in use, the at least one sample vessel is subject to the magnetic field of the magnetising portion (3).

Abstract: A system for concentrating magnetic particles suspended in a fluid comprising a vessel for containing said fluid having an inner base surface that slopes downwards towards a collection region, the collection region including a retrieval well for collecting magnetic particles; a magnet assembly for positioning under and in proximity with the vessel for attracting magnetic particles to the bottom surface of the vessel, said magnet assembly providing a relatively larger magnetic flux density at a peripheral region thereof; means for laterally traversing the magnet assembly relative to the vessel between a first position whereby the magnet is generally centered under the vessel and a second position whereby the peripheral portion of the magnet is positioned under the well of the vessel; and agitation means for agitating said vessel to facilitate movement of the magnetic particles to the well, where the concentrated particles can be easily removed.

Abstract: A magnetic treatment device for liquid within at least one liquid container may include a figurine having a body portion and at least one limb extending outwardly therefrom. The at least one limb may be positioned adjacent the at least one liquid container. At least one permanent magnet may be carried by the at least one limb to expose the liquid within the at least one liquid container to a magnetic field.

Abstract: An embodiment of the invention relates to a device for detecting an analyte in a sample. The device comprises a fluidic network and an integrated circuitry component. The fluidic network comprises a sample zone, a cleaning zone and a detection zone. The fluidic network contains a magnetic particle and/or a signal particle. A sample containing an analyte is introduced, and the analyte interacts with the magnetic particle and/or the signal particle through affinity agents. A microcoil array a mechanically movable permanent magnet is functionally coupled to the fluidic network, which are activatable to generate a magnetic field within a portion of the fluidic network, and move the magnetic particle from the sample zone to the detection zone. A detection element is present which detects optical or electrical signals from the signal particle, thus indicating the presence of the analyte.

Abstract: A treatment device is for magnetically treating liquid in a liquid container including a plurality of figurines configured to define a container holder to receive the liquid container. At least one permanent magnet is associated with the plurality of figurines to generate a magnetic field within the liquid in the liquid container.

Abstract: A magnetic separator unit for the selective separation of at least one component from a fluid mixture is described. The unit can include at least one mandrel-shaped magnet unit and tubing wrapped around it. Fluid containing magnetisable particles can be passed through the tubing to allow attraction of the particles to the magnet unit.

Abstract: A separating device (1, 10, 11) for separating magnetizable particles and non-magnetizable particles transported in a suspension flowing through a separating channel (3), has at least one permanent magnet (4) arranged on at least one side of the separating channel (3) for producing a magnetic field which deflects magnetizable particles to the side, wherein in addition to the permanent magnet (4) at least one coil (7) is provided for producing an additional field.

Abstract: A fluid treatment device including a source of electrical voltage having a first and second terminal, a pulse generator connected to the first terminal and the second terminal and outputting a pulsed voltage wave signal between a third terminal and a fourth terminal, at least one coil positioned adjacent at least one fluid conduit, being electrically connected to the third and fourth terminals and at least one capacitor also being electrically connected to the third and fourth terminals to form a first circuit with an inductance L, a capacitance C and a resonant frequency. The pulse generator is arranged to generate a pulsed voltage wave with a frequency approximately equal to the resonant frequency. A further circuit element is arranged to cause the voltage pulse reaching the coil to repeatedly, alternate between a period of pulsed voltage at the frequency and a period of zero voltage, with each period extending for a time in a range of approximately 2 to 33 milliseconds.

Abstract: A device for separating ferromagnetic particles from a suspension has a tubular reactor and a plurality of magnets which are arranged outside the reactor, the magnets (9) being movable along at least a part of the length of the reactor (2) up to the vicinity of a particle extractor (5) by means of a rotary conveyor (8).

Abstract: A filtration device is provided with a filter tank, filter media unit, and magnet. The filter media unit includes a filter media accommodation case and a large number of magnetic granular filter media. The magnet is movable between first and second positions. In the first position, a magnetic field is applied to the magnetic granular filter media, so that the magnetic granular filter media magnetically attract one another. In the second position, magnetic attraction between the magnetic granular filter media is canceled. The filter media accommodation case includes a nonmagnetic mesh member of a nonmagnetic material and magnetism intensification plate of a magnetic material. When the magnet is in the first position, the magnetic granular filter media and nonmagnetic mesh member are located between the magnetism intensification plate and the magnet.

Abstract: A device for separating ferromagnetic particles from a suspension has a tubular reactor having at least one magnet, a suspension being able to flow through the reactor. The reactor (2) has at least one extraction line (3) branching off from the reactor (2), to which extraction line a negative pressure can be applied and which extraction line is surrounded by a permanent magnet (4) in the region of the branching.

Abstract: A process for manipulating magnetic particles suspended in a fluid that are able to bind to an entity of interest, the fluid being contained in a reaction vessel having a large funnel shaped upper compartment, an elongate lower compartment of substantially constant cross-section and a closed base. The process consists of: a) subjecting the magnetic particles to two simultaneously applied magnetic fields to separate all said magnetic particles present in at least the upper compartment of the vessel from the fluid, b) transferring the separated magnetic particles from the upper compartment to the lower compartment, c) removing the fluid from the vessel, d) adding a washing liquid to the lower compartment, e) subjecting the magnetic particles to at least two magnetic fields applied successively with changing directions to wash all the magnetic particles present in the lower compartment, and concentrating said magnetic particles in said lower compartment.

Abstract: An electromagnetic hydraulic valve (1) is provided having a magnetic armature (8) which is guided in a longitudinally movable fashion in an armature guide (9) and activates a valve push rod (15) which extends in a valve housing (14). The valve push rod (15) controls the connection between connection openings (28, 29, 30), formed in the valve housing (14), for hydraulic medium in that the valve push rod (15) is operatively connected to one or more sealing bodies (22, 23) which correspond to one or more sealing sleeves (17, 18) supported in the valve housing (14). The hydraulic valve (1) includes an arrangement for precipitating particles of dirt, which element includes an intermediate floor (31), which is arranged between the armature guide (9) and the connection openings (28, 29, 30).

Abstract: A system for separating a solid magnetic substrate from liquid contents of a reaction vessel, the system comprising at least one micro-well plate having a plurality of rows and a plurality of magnets arranged in at least two rows. In one embodiment, the at least two rows of the plurality of magnets are controlled so as to cause the magnets in the at least two rows of magnets to move in unison. In another embodiment, one row of the at least two rows of the plurality of magnets is controlled so as to cause the magnets in said one row to move at a first velocity in the vertical direction and another row of the at least two rows of the plurality of magnets is controlled so as to cause the magnets in that other row to move at a second velocity in the vertical direction.

Abstract: A system, apparatus and method for magnetically separating a fluid flow passing through a pipeline are provided. A magnetic separator assembly having a plurality of elongate magnetic members is provided. Each magnetic member can have a first end and a second end. A cleaner plate can be provided that can move along the magnetic members. After the magnetic separator assembly is used to collect magnetic particles from a fluid flow in a pipeline, the magnetic separator assembly can be cleaned by sliding the cleaning plate along the magnetic members.

Abstract: A magnetic separation apparatus, comprising: a separation tank to which wastewater containing flocculated magnetic flocs is supplied; a disk-shaped or a drum-shaped separator that adsorbs the magnetic flocs with magnetic force while being rotated, the separator being arranged in the separation tank; and a collection device that collects the magnetic flocs adsorbed by the separator, wherein the improvement comprises that a rotational direction of the separator in the wastewater in the separation tank is set to be the same as a flow direction of the wastewater flowing in the separation tank as well as a lower portion of the separator being under the wastewater in the separation tank.

Abstract: A system for sorting and trapping magnetic target species includes a microfluidic trapping chamber designed to receive and then temporarily hold magnetic particles in place within the module. An external magnetic source moves relatives to the fluid chamber as the magnetic particles flow the device in the fluidic medium. The magnetic particles flowing into the module are trapped there while the other sample components (non-magnetic) continuously flow through and out of the station, thereby separating and concentrating the species captured on the magnetic particles. The magnetic particles and/or their payloads may be released and separately collected at an outlet after the sample passes through the trapping module.

Abstract: A magnetic filtering film is used to remove grains from liquid that goes through the magnetic filtering film. The magnetic filtering film includes a rubber film and micro-magnets. The rubber film is made of organic polymer. The rubber film is formed with apertures through which liquid can go. The micro-magnets are distributed in the rubber film for attracting ferromagnetic grains from the liquid.

Abstract: An object of the present invention is to provide a magnetic field forming device for active water capable of uniformly forming a high magnetic field free from any unevenness in its intensity, activating a fluid regardless of the orientation of magnetic polarity of the magnets, bringing about excellent assembling efficiency not requiring assembling while checking the orientation of the magnets, being manufactured at a high product yield ratio without occurrence of defective products resulting from a difference in the orientation of the magnets, remarkably easily taking out the magnets without use of any exclusive special tool, and removing rust and stains adhered to the magnets by wiping off the magnets one by one, the maintenance efficiency of which is excellent.

Abstract: A magnetic sensor array including magnetoresistive sensor elements having outputs combined by frequency division multiplexing (FDM) is provided. Each sensor element provides an input to a mixer which provides a distinct frequency shift. Preferably, time division multiplexing is also used to combine sensor element outputs. Each sensor element is typically in proximity to a corresponding sample. The sensor elements are preferably subarrays having row and column addressable sensor element pixels. This arrangement provides multiple sensor pixels for each sample under test. Multiplexing of sensor element outputs advantageously reduces readout time. A modulated external magnetic field is preferably applied during operation, to reduce the effect of 1/f noise on the sensor element signals. The effect of electromagnetic interference (EMI) induced by the magnetic field on sensor element signals is advantageously reduced by the mixing required for FDM.

Abstract: A microreactor containing a plurality of introduction channels 21 and 22 for introducing a plurality of liquids, a merging section 23 for merging the plurality of introduction channels 21 and 22, and a reaction channel 41 located on a downstream side of the merging section 23, characterized in that a flow control section 80 is located on a downstream side of the merging section 23 and an upstream side of the reaction channel 41, and the flow control section 80 contains in a channel 81 thereof a movable particle 82. According to the constitution, such a microreactor can be provided that the flow state in the reaction channel 41 is controlled to realize a flow state with good reproducibility.

Abstract: Present invention relates to a device magnetically separating a sample. The preferred material for the device is plastic. The device is a cuboid plate, which consists of one or two bottom sides and at least two lateral sides. The bottom side has wells on it to accommodate magnetic elements, and the magnetic element which is suitable to be accommodated into the wells comprising column shape, half-column shape, or half circular column shape magnetic elements. The magnetic element comprises permanent magnet or electromagnet, and the permanent magnet is selected from the group consisting of alnico, samarium cobalt, neodymium iron boron, or magnetic ceramic materials. The magnetic elements can adsorb the magnetic samples in the micro plate.

Abstract: A method and apparatus (10) for separating magnetic and non-magnetic particles from water in a domestic central heating system is disclosed. A magnet (60) is located in the housing and the inlet and the outlet are arranged so that, in use, water flows through the apparatus in a cyclonic motion from the inlet downwardly proximate the walls of the housing, and then upwardly within the downwardly flowing water, to the outlet. Particles entrained within the water separate out by vortex separation as the water flows downwardly. Also, magnetic particles entrained within the water are collected on the magnet as the water flows upwardly. The apparatus also comprises a sleeve (30) located within the housing such that an outer circulation channel (31) is defined between the housing and the sleeve. The magnet is located within the sleeve such that an inner circulation channel (61) is defined between the sleeve and the magnet.

Abstract: Methods and devices for selectively removing from a subject a target cell, pathogen, or virus expressing a binding partner on its surface are presented. In one embodiment, the device contains an excorporeal circuit, which includes, at least, a magnetic filter comprising a magnet and a removable, magnetizable substrate capable of capturing magnetic nanomaterials; and a pump in fluid communication with the magnetic filter, wherein the pump moves fluid through the excorporeal circuit. The magnet is capable of generating a magnetic field sufficient to capture magnetic nanomaterials in the magnetic field. In a preferred embodiment, the target cells are cancer cells and/or cells infected with pathogenic agents. The devices may be designed for extracorporeal or in vivo uses. Functionalized superparamagnetic nanoparticles are either mixed ex vivo with a biological fluid from the patient or injected into the patient.

Abstract: A filter element has a non-magnetic frame defining a fluid flow opening. The non-magnetic frame has at least one mounting surface for mounting against a ferrous material. Two or more magnet-enclosing channels are supported by the non-magnetic frame. Two or more permanent magnets are provided within each magnet-enclosing channel. The permanent magnets are arranged with opposite poles facing one another. The permanent magnets apply a magnetic force through the at least one mounting surface to support the non-magnetic frame on the ferrous material.

Abstract: A device (10) is described for automatically separating solid and liquid phases of a suspension (78) and for purifying magnetic microparticles (76) loaded with organic, e.g., biological or biochemical substances. The device includes a process area (12) with devices, which move in a cyclic manner for transporting the magnetic microparticles (76) in the x-direction. A first guide (14) is used for supplying sample containers (P) in the x-direction and second guides (18) are used for supplying reagent containers (R) in the y-direction to the process area (12). The second guides (18) in the y-direction extend at an angle (?) of 30 to 150 ° to the x-direction. A carrier element (24), including carrier plates (24a, 24b, 24c) can be moved back and forth in the x-direction and can be lifted and lowered in the z-direction.

Abstract: A magnet drum mechanism of a magnet separator includes a cylindrical drum, a magnet provided inside of the drum and forming a magnetic field region configured to adsorb magnetic particles in a circumferentially partial range of an outer peripheral surface of the drum, and a scraper provided in a nonmagnetic field region of the drum, the scraper being configured to guide the magnetic particles adsorbed onto the outer peripheral surface of the drum to an outside of the separator main body in the nonmagnetic field region. The scraper includes a front end portion which faces the outer peripheral surface of the drum in a contactless manner along an axial direction of the drum, and a small gap is formed between the front end portion and the outer peripheral surface of the drum.

Abstract: The present invention provides an assembly for reducing combustion emissions of a combustion apparatus having a combustion chamber producing combustion. The combustion apparatus also has a fluid passageway for carrying treated fluid to the combustion chamber. The assembly includes at least one magnet positioned such that a north pole of each magnet is adjacent the fluid passageway, and a south pole of each magnet is on an opposite side of the north pole and positioned away from the fluid passageway. Each magnet is capable of operating at a sustained efficiency at operating temperatures of approximately 302° F. Each magnet provides a residual flux density of at least approximately 10,000 gauss. The combustion emissions have at least approximately a 1.5% reduction in carbon dioxide emissions compared to the combustion of untreated fluid, as well as reductions in hydrocarbon and carbon monoxide emissions.

Abstract: A device for removing ferrous particulates from an oil stream within a motor vehicle includes a passage through which the oil stream flows and a magnet disposed within the passage. The passage defines a cavity in which the magnet is housed. The passage defines a substantially ninety-degree bend, such that particles suspended within the oil stream are propelled into the magnet before continuing along the passage. Preferably the device is disposed upstream of vehicle control valves, such that debris is removed from the oil stream prior to travel through the valves. Preferably, the cavity defines an overhang, which may be magnetic, with the overhang securing the magnet within the cavity and preventing particulates from re-entering the oil stream. An opening within the passage preferably defines the ninety-degree bend. The opening may be at least partially defined by the cavity. The magnet is preferably configured to be replaceable, removable, or both.

Abstract: Methods and apparatus relate to treatment of fluids to remove mercury contaminants in the fluid. Contact of the fluid with active outer surfaces of particles magnetically separable from the fluid loads the particles with the mercury contaminants. Magnetic separation then removes from the fluid the particles loaded with the mercury contaminants such that a treated product remains.

Abstract: The water is at the origin of an entire series of geological and climatic processes and is primarily the basis of all forms of life. Actually, it is the majority component of all living organisms (50% to 98%); the human body contains 70% of the total mass thereof. The biosphere in its entirety consists of 80% water. Although this may be one of the most highly examined liquids, its properties comprising numerous anomalies have not yet all been elucidated. It plays an essential role in the structure and metabolism of all living beings. This biological role is due to its physical and chemical properties that are out of the ordinary. Bernal and Flower established a rule defining that each oxygen atom has two hydrogen atoms as neighbors and each hydrogen bond contains one hydrogen atom. The separation of the liquid water molecules produces the formation of hydroxyl ion (OH?) and hydronium ions (H3O+), which hampers this rule.

Abstract: The present invention discloses a nano-granule fuel oil, which substantially contains no granule greater than 10 nm. This nano-granule fuel oil can be obtained by treating conventional fuel oils under a magnetic field with a air gap magnetic field intensity of at least 8000 Gauss and a magnetic field gradient of at least 1.5 tesla/cm. The nano-granule fuel oil of the present invention significantly improves the combustion degree of fuel oil as compared with the conventional fuel oils. Its application can considerably economize fuel oil and reduce the emissions of CO and the like in tail gas.