Abstract: A processor may receive an input dataset. The input dataset may include a plurality of waterpipe components and one or more performance factors of the waterpipe system. A processor may generate a digital twin of the waterpipe system using the input dataset. A processor may simulate, using the digital twin, one or more features of the waterpipe system. The simulating may include a forecast having one or more predicted conditions associated with the waterpipe system.

Abstract: A servicing tool for a turbine engine and a method for using thereof are provided. A method includes inserting the tool into an access opening of the turbine engine, contacting a blade of the turbine engine, and removing material from the blade. The tool may comprise a wiper mount and a wiper, including a wiper surface, configured to contact and remove material from the blades. The tool may further comprise a body, an actuator, and fluid flowpaths for deploying the wiper and providing fluid locally to the blades of the turbine engine.

Abstract: The invention relates to a method for removing and/or decolourizing metal stains on a surface of a substrate composed of aluminium or aluminium alloy, the method comprising the consecutive steps of (a) providing the substrate comprising metal stains on the surface, said metal stains having a metal stain surface area; (b) providing an aqueous treatment liquid comprising one or more components selected from the group consisting of galactaric acid and galactarate salts; and (c) treating at least part of the surface of the substrate by contacting at least part of the metal stain surface area with the aqueous treatment liquid, wherein the aqueous treatment liquid is free of phosphorus- and/or acrylate-containing compounds and wherein the pH of the aqueous treatment liquid is between 6.5 and 10.9. The invention further concerns the resulting products and the use of the aqueous treatment liquid for removing and/or decolourizing metal stains on a surface of a substrate composed of aluminium or aluminium alloy.

Abstract: The invention relates to a method for pickling steel sheets 8, the steel sheets being continuously dipped in a pickling bath 1, containing a pickling solution 10, the bath being connected to a treatment unit including a recirculation tank 3, circulators 12 and 13, a continuous entering flow 11 of the solution being fed into an ultrafiltration device 2 from the recirculation tank 3 and two flows exiting the ultrafiltration device, one filtered exiting flow 21 being then fed back inside the recirculation tank 3 and one unfiltered flow 22, the treatment unit including no storage tank.

Abstract: Methods of cleaning flow path components of power systems, and sump purge kits used in the same or related methods are disclosed. A method of cleaning may include removing a casing of the turbine system to expose a rotor of the turbine system, a plurality of flow path components coupled to the rotor and/or the casing, and a sump system in communication with the rotor. The method may also include pressurizing the sump system in communication with the rotor, and sealing a plurality of openings formed in the rotor. Additionally, the method may include exposing the rotor and the plurality of flow path components to steam to dry hydrocarbons formed on a surface of the rotor and a surface of the plurality of flow path components, and blasting the rotor and the plurality of flow path components with solid carbon dioxide (CO2) to dislodge the dried hydrocarbons.

Abstract: Provided herein is a reductive solution for preventing rouge formation on stainless steel, said solution comprising complexing anions, Fe2+, and, optionally, one or more pH modifiers. Further provided are methods for manufacturing said solution, methods for prevention of rouge formation on stainless steel surfaces, and related uses of the aforementioned reductive solution.

Abstract: An apparatus for the wet attrition of particulate material comprising an attrition scrubber; a dewatering screen comprising a deck and a sump beneath the deck, the dewatering screen being mounted upstream of the attrition scrubber whereby oversize material from a downstream end of the deck of the dewatering screen passes into the attrition scrubber; and a hydrocyclone wherein an underflow, containing a coarser fraction of the feed slurry, passes out of a lower outlet of the hydrocylone while an overflow, containing a finer fraction of the feed slurry and most of the water, passes out of an outlet at the upper end of the hydrocyclone, a pump being provided for pumping material from the sump of the dewatering screen to the inlet of the hydrocyclone, wherein the underflow from the hydrocyclone is passed into the attrition scrubber.

Abstract: The invention relates to a method for dissolving an oxide layer containing chromium, iron, nickel, and radionuclides by means of an aqueous oxidative decontamination solution, which contains permanganic acid and a mineral acid and which flows in a circuit (K1), wherein the oxidative decontamination solution is set to a pH value ?2.5.

Abstract: Problem is to selectively and inexpensively recover a metal ion in a liquid. Solution is a metal ion recovery device, in which a permselective membrane for selectively permeating Li is used, and on both main faces of the plate-like permselective membrane, a mesh-like negative electrode and a positive electrode are formed, respectively. This structure is provided in a treatment tank, and in the treatment tank, the permselective membrane partitions between a stock solution containing a Li ion, and a recovery solution into which Li is recovered. As the permselective membrane, lithium nitride (Li3N), Li10GeP2S12, (Lax, Liy)TiOz, Li1+x+yAlx(Ti, Ge)2?xSiyP3?yO12, and the like, which are super lithium ion conductors, can be used.

Abstract: An automated support cleaning system comprising a tank disposed within a housing and configured to circulate an aqueous cleaning solution to remove a support structure from a three-dimensional model.

Abstract: A method of separating a lignin-rich solid phase from a solution suspension, by pretreating a lignocellulosic biomass with a pretreatment fluid having remove soluble components, colloidal material and primarily lignin containing particles; separating the pretreated lignocellulosic biomass from the pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles; flocculating the separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles using polyethylene oxide (i.e., PEO) or cationic Poly acrylamide (i.e., CPAM) as a flocculating agent; and filtering the flocculated separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles to remove agglomerates.

Abstract: A water treatment agent for removing contaminants through oxidation with high-activity intermediate-state pentavalent manganese consists of a manganese-containing compound, a complexing agent, and a persulfate, wherein the manganese-containing compound is bivalent manganese ions, permanganate or manganese dioxide. The molar ratio of the bivalent manganese ions, the ligand, and the persulfate is 1:1-50:1-1000. The agent removes contaminants through oxidation with high-activity intermediate-state pentavalent manganese, and has the advantages of high oxidizing ability, being capable of fast removing organic contaminants in water, and having no toxic and harmful substance produced.

Abstract: A liquid processing apparatus 200 includes a pure water supply source 20; a pure water flow rate control opening/closing valve 27; a sulfuric acid supply unit 30; a sulfuric acid supply opening/closing valve 34; mixing tanks 11 and 12 configured to mix pure water and sulfuric acid to produce a mixed chemical liquid and connected to a circulation line 100 having a circulation pump 101; a liquid processing unit 210 configured to perform a liquid process on a substrate W with the mixed chemical liquid. A controller 300 controls a pure water supply opening/closing valve 26, the sulfuric acid supply opening/closing valve 34, and the circulation pump 101, such that operation of the circulation pump 101 is started after starting supply of the pure water to the mixing tanks 11 and 12, and then, supply of sulfuric acid to the mixing tanks 11 and 12 is started.

Abstract: A method of synthesizing silver nanoparticles from waste film includes providing waste film including a silver halide salt and gelatin, mixing the waste film with an alkaline solution to form a mixture, heating the mixture, and subjecting the mixture to ultracentrifugation to isolate silver nanoparticles in the mixture. The film can include waste radiographic or photographic film pieces. Glucose and/or polyvinylpyrrolidone (PVP) may be added to the mixture. The nanoparticles can have an average particle size of about 2 nm to about 10 nm. The silver nanoparticles can be resistant to synthetic stomach fluid and showed high antimicrobial activity.

Abstract: The present invention relates to a system for remediating highly contaminated fine soil using multiple micro hydrocyclones that includes: a mill adapted to mix contaminated soil with water and to individualize the soil; a screen adapted to separate the soil introduced from the mill into soil having given particle sizes; a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the finely separated soil introduced from the separator by particle size by means of process water for washing; and a filtering unit adapted to separately discharge the soil washed and introduced through the remediating unit and the process water for washing contained in the soil.

Abstract: A method for removing ionic species from a desalination unit, comprises: (a) circulating a wash stream in a closed loop comprising a desalination unit and a precipitation unit, the wash stream flowing at a linear velocity of at least 5 cm/second through the desalination unit, the wash stream becoming more saline after passage through the desalination unit; and (b) removing a portion of calcium sulfate from the wash stream by precipitation in the precipitation unit to obtain a supersaturation degree of calcium sulfate in the wash stream entering the desalination unit in a range of from about 1.0 to about 3.0.

Abstract: An ultrasonic generator is provided, in which the control system can easily be changed in accordance with a cleaning application and a cleaning process. The ultrasonic generator according to the present invention, which causes an ultrasonic transducer to oscillate a signal for ultrasonic vibration, includes a programmable multiple control circuit having a signal generation circuit for generating a signal, and an output adjustment circuit for adjusting the output of the signal from the programmable multiple control circuit, wherein the programmable multiple control circuit has a power control circuit electrically connected to the output adjustment circuit, a phase comparison circuit electrically connected to the output adjustment circuit, a frequency control circuit electrically connected to the phase comparison circuit, and a signal modulation circuit electrically connected to the frequency control circuit via the signal generation circuit.

Abstract: The present disclosure relates to purge fluids, methods of using the purge fluids, and systems to be used for recycling the purge fluids. In some aspects, the purge fluid may be used to clean or purge an automated spray coating apparatus, such as a paint gun. The purge fluid may include a solvent and water. After the purge fluid is utilized for purging or cleaning certain system components, the purge fluid may be treated, subjected to a liquid-solid separation technique, and reused as a purge fluid.

Abstract: A multiple garment drying apparatus for drying garments that includes a hot air source and blower assembly attached to a garment hanging assembly that includes two upward extending hot air transfer tubes that connect to two hot air ports on the blower assembly. Attached to the ends of the two tubes is a hollow, transverse brace with two upward extending end brackets attached to its opposite ends. Attached to the two end brackets is an upper shoulder component used to support a jacket placed thereon. The upper shoulder component includes a plurality of air vents that enable air delivered below the upper shoulder component to travel upward and through the upper shoulder component. During operation, air from the hot air source and blower assembly is delivered to the two transfer tubes. The air from the two transfer tubes is then transmitted to the transverse brace and through the upper shoulder component.

Abstract: The present invention is in the field of laundry processes and devices. In particular the invention relates to the saving of water. It is an object of the present invention to reduce the water consumption in conventional washing methods, especially machine washing methods. It is found that the continuous pH controlled sequential dosing of an electrolyte, followed by dosing of a polymer and a solid liquid separation step during a full wash cycle of a washing machine, provides continuous clarification of the wash liquor and enables the continuous reuse of the water during said wash cycle.

Abstract: An inventive method includes the steps of: loading a fiber product in an appropriate form into a treatment vessel; wetting the fiber product; forcibly circulating an ozone-containing liquid in contact with the wetted fiber product to thereby bleach the fiber product; and forcibly circulating an ozone decomposing chemical agent liquid in contact with the ozone-treated fiber product to decompose ozone. This method ensures efficient bleaching of the fiber product with the ozone. Further, the method is advantageous in that the resulting bleached fiber product is less liable to be yellowed over time.

Abstract: A method of removing food soils from a recirculated washing solution includes adding a flocculating agent to the recirculated washing solution and separating the particulates from the recirculated washing solution using a hydrocyclone. The flocculating agent causes a portion of the food soils to combine into particulates having a higher density.

Abstract: A method of washing anode slime from lead-bismuth alloy electrolysis is disclosed, wherein a lead fluorosilicate solution with high concentration can be obtained by using the anode slime from lead-bismuth alloy electrolysis as raw material, which is characterized in that the method includes the following steps: (1) pretreating the anode slime, (2) primarily soaking the anode slime, (3) secondarily soaking the anode slime. A method of washing anode slime from lead-bismuth alloy electrolysis, and obtaining a soaking solution containing a lot of lead ions and fluorosilicic anions is provided. The soaking supernatant is added directly into the electrolyte-circulating system of lead-bismuth alloy electrolysis, which increases the utilization rate of lead ions and fluorosilicic anions, and improves the environment for smelting bismuth and silver, while reduces production cost for smelting lead, bismuth and silver.

Abstract: The invention relates to a washing apparatus, including a First Region (1) to which a wash material (4) is supplied, a Second Region (2), in which the wash material (4) is washed, and a Third Region (3), in which the wash material (4) is melted and a flow resistance (6), which is provided between the Second Region (2) and the Third Region (3), a purification apparatus, a synthesis device, a method for purifying a wash material, and the use of a washing apparatus or a purification apparatus for purifying and then using the target product obtained by the purification.

Abstract: The method of dissolving the solids formed in the apparatus and pipework of a nuclear plant, in which the solids are brought into contact with an aqueous dissolving solution chosen from aqueous solutions of carbonate ions having a concentration of greater than or equal to 0.3M, aqueous solutions of bicarbonate ions, and solutions of a mixture of nitric acid and of a polycarboxylic acid chosen from oxalic acid and triacids.

Abstract: Provided is a scanning arm which moves to collect pollutants on the surface of a semiconductor wafer, for use in a semiconductor wafer pollutant measurement apparatus, and a scanning device using the same. The scanning arm includes: an X-axis portion; a Z-axis portion which is perpendicularly installed with the X-axis portion so as to move forward and backward along the X-axis portion; and a Y-axis portion which is perpendicularly installed with the Z-axis portion so as to move up and down with respect to the Z-axis portion.

Abstract: A method to wash and remove dissolved solids from biomass including: discharging a biomass slurry from a pretreatment vessel to a biomass slurry retention device; adding recovered wash liquid to dilute the biomass slurry in the retention device, wherein the recovered wash liquid is extracted from a drainer device upstream of the first retention device; discharging the diluted biomass slurry from the retention device to the drainer device; separating wash liquid with dissolved solids from the diluted biomass slurry in the drainer device and discharging a concentrated biomass slurry from the drainer device, and recovering the wash liquid from the diluted biomass slurry in the drainer device and transferring the recovered wash liquid to the retention device.

Abstract: A process for the removal of dry adhesives and/or inks from the surface and from the interior of the cells of the engraved cylinders used in printing and coupling processes, using a supercritical mixture formed by one or more organic solvents and a supercritical fluid, preferably consisting of supercritical carbon dioxide. The microscopic cells of the engraved cylinders used in printing industry or of the cylinders used for film coupling in packaging industry are thoroughly and easily cleaned by a process comprising the steps of forming the said supercritical mixture, delivering it in a high pressure autoclave previously filled with the engraved cylinders to be cleaned, cleaning for a given residence time, eliminating the organic solvent residue in the autoclave by washing it with supercritical fluid and precipitating the extracted inks and/or adhesives in one or more separators located downstream the autoclave.

Abstract: A composition for stripping a color filter and a color filter regeneration method are provided. A composition for stripping the color filter according to an exemplary embodiment of the present invention includes glycol and potassium hydroxide (KOH), in which either (a) the concentration of the glycol is in the range of 83 wt % to 91 wt % and of the concentration of the potassium hydroxide satisfies the condition: (wt % of KOH)?6?(0.065*(wt % of the glycol)), or (b) the concentration of glycol is more than 91 wt % and the concentration of potassium hydroxide (KOH) is more than 0.2 wt %.

Abstract: A method for cleaning drywall tools and other objects produces dirty water while collecting the dirty water in a container. The method includes treating the dirty water in the container with a water-clarifying agent to produce settled-out mud and/or other settled-out constituents and clarified water, removing the clarified water from the container, and, preferably, draining the settled-out mud or other settled-out constituents from the container for recycling. An apparatus includes a cart supporting a container that includes an upwardly opening main portion over which the user sprays the object and a lower portion extending downwardly from the main portion. The lower portion has a bottom end that includes a valve-controlled outlet for enabling the user to drain a quantity of settled-out mud or other settled-out constituents from the container after that quantity has settled out of suspension from the dirty water.

Abstract: Vibrators, each comprising an electric motor having an eccentric weight on its rotating shaft, are adhesively secured to the bottoms of the wastewater holding tanks of a recreational vehicle, to aid in flushing the tanks by dislodging solid debris from the inside walls and bottoms of the tanks and from the electrodes of the liquid level sensors in the tanks.

Abstract: In this disclosure, a reactor system is described. The reaction system comprises (a) a reaction vessel having an inner wall, wherein said reaction vessel is configured to receive reactants and export products and byproducts; (b) a primary quench device (PQD) configured to receive a coolant and disperse said coolant into said reaction vessel; and (c) a secondary quench device (SQD) configured to receive a coolant and disperse said coolant into said reaction vessel; wherein said PQD comprises an array of spray nozzles fixed on the inner wall of said reaction vessel at a first axial position; and wherein said SQD comprises (1) an axially movable pipe having a coolant entry end and a nozzle end, wherein said pipe is configured to be removably fixed inside said reaction vessel; and (2) a spray nozzle that is fluidly connected to said pipe at its nozzle end via a fluid tight seal connection.

Abstract: A method for removing ionic species from a desalination unit, comprises: (a) circulating a wash stream in a closed loop comprising a desalination unit and a precipitation unit, the wash stream flowing at a linear velocity of at least 5 cm/second through the desalination unit, the wash stream becoming more saline after passage through the desalination unit; and (b) removing a portion of calcium sulfate from the wash stream by precipitation in the precipitation unit to obtain a supersaturation degree of calcium sulfate in the wash stream entering the desalination unit in a range of from about 1.0 to about 3.0.

Abstract: Particularly in hospitals, care homes or similar institutions, it is necessary to have a safely handled and reliable method for the emptying and cleaning of excretion containers, for example urine bottles or bedpans. A method and a system (110) are therefore proposed, by means of which such articles to be rinsed (112) can be treated. In this case, first, in an emptying step (210), the articles to be rinsed (112) are emptied and are rinsed out with a rinsing-out liquid. Subsequently, in a circulation step (212), the articles to be rinsed (112) are washed in circulation. Finally, a rinsing-clear step (214) is carried out, in which the articles to be rinsed (112) are rinsed with a rinsing-clear liquid. Then, in an optional disinfection step (216), preferably a chemical disinfection step (216), the articles to be rinsed (112) are disinfected, and, in an optional drying step (218), the articles to be rinsed (112) are dried by being blown off with heated air.

Abstract: A method is provided for reducing the amount of film fragments discharged into a processing liquid circulation system during removal of films from wafers, thereby reducing the frequency of filter cleaning or filter replacement. The method includes exposing a wafer containing a film formed thereon in a process chamber of a substrate processing system to a processing liquid, where the wafer is not rotated or is rotated at a first speed and the processing liquid is discharged from the process chamber to a processing liquid circulation system. Subsequently, exposure of the wafer to the processing liquid is discontinued and the wafer is rotated at a second speed greater than the first speed to centrifugally remove fragments of the film from the wafer. Next, the wafer is exposed to the same or a different processing liquid and the processing liquid is discharged from the process chamber to a processing liquid drain.

Abstract: A method for treating a fine structure, includes supplying a liquid to a surface of the fine structure having protrusions on the surface thereof; and thereby treating the surface of the fine structure. The liquid has a smaller surface tension than that of water and is not substantially compatible with water.

Abstract: Disclosed is an aircraft rinse system for gently rinsing an aircraft engine even while the aircraft engines are on. The rinse deck has integral nozzles and water storage. Pressurized air can be used to force the water from the storage area in the deck to spray out nozzles that are integral to the deck.

Abstract: Methods and compositions for purging and cleaning a semiconductor fabrication system are disclosed herein. In general, the disclosed methods utilize solvents comprising hydrofluoroethers. Hydrofluoroethers are non-toxic and have low moisture content, preventing heat generation from organometallic precursor hydrolysis. In an embodiment, a method of cleaning a semiconductor fabrication system comprises dissolving at least one chemical precursor used in semiconductor fabrication in at least one delivery line with a solvent to clean the at least one delivery line. The solvent generally comprises a hydrofluoroether. The methods and compositions may be used in a variety of semiconductor film deposition processes.

Abstract: Environmentally friendly solvents used to dissolve or remove residues and/or substances from substrates wherein the residue and/or substance is contacted with a Generally Recognized As Safe solvent to dissolve the residue and/or substance in the solvent followed by the extraction of the residue and/or substance from the solvent such as by contact with carbon dioxide.

Abstract: A rust-preventive water-oil separating cleaner composition contacts a part to be cleaned to which an oil attaches. The composition separates the oil from the part, while providing the part with a rust-preventive property, thus forming an oil layer containing the oil.

Abstract: A method for treating catalysts, in particular, for the cleaning and/or regeneration of a catalyst, whereby the catalyst comprises parallel channels. The catalyst is taken out of service for treatment and flushed with a cleaning and/or regeneration fluid in-situ in the assembled state. The cleaning and/or regeneration fluid is introduced under pressure to that end of a bundle of adjacent channels away from the pressurized end of the catalyst. The channels of the bundle are flushed against gravity and the cleaning and/or regeneration fluid escapes from the other end of the channels thereupon enters the free ends of other adjacent channels and flows through the same under the effect of gravity.

Abstract: Various kinds of metal elements existing on the surface of a wafer are analyzed with higher sensitivity. A high concentration HF solution is dropped onto a surface of a wafer. By providing the droplets of high concentration HF solution, the native oxide film on the surface of the wafer is dissolved into the solution, and the metal elements or compounds thereof existing in vicinity of the surface of the wafer are eliminated from the wafer and are incorporated into the high concentration HF solution. The droplets formed by agglomerating the high concentration HF solution are aggregated at a predetermined position on the surface of the wafer. Then, the recovered droplet of the high concentration HF solution is dried. The aggregated material is irradiated with X-ray at an angle for promoting total reflection, and the total reflection X-ray fluorescence spectrometry is conducted to detect the emitted X-ray.

Abstract: A process for removing solids from a water-based flush solution, The process includes: providing dirty flush solution; directing the dirty flush solution to a treatment vessel; adding one or more chemicals to the treatment vessel to form a treated flush solution; separating aggregated paint compounds from the treated flush solution to form a filtered flush solution; and directing the filtered flush solution to spray application equipment. The flush system of the invention includes a treatment vessel, wherein the dirty flush solution is mixed with one or more chemicals to form a treated flush solution; a primary separation unit to remove particles including aggregated paint compounds from the treated flush solution to form a filtered flush solution; and transfer lines to direct the filtered flush solution to spray application equipment. The filtered flush solution contains: 1% to 5% by weight of a water soluble organic solvent; 0.

Abstract: The present invention relates to the use of an optical line detector for regulating the position of the wash front and/or of the build-up front of the crystal bed of a wash column in a melt crystallization process and a corresponding regulation method. The line detector, for example a CCD camera or a linear array of reflection probes, is arranged in such a way that optical properties of the crystal bed can be detected continuously in a region running parallel to the longitudinal axis of the wash column, this region covering the desired setpoint position of the wash front or of the build-up front.

Abstract: A process for purifying a lipophilic fluid employing a functionalized fabric treating agent. The functionalized fabric treating agent is capable of delivering fabric treating benefits in a non-aqueous fabric article treatment process and is designed for easy removal from the non-aqueous solvent after the fabric article treatment process. Laundry soils can also be removed by this process. The present invention also relates to a fabric treatment composition containing the functionalized fabric treating agent.

Abstract: A process for purifying dry cleaning solvents from a mixture containing used dry cleaning solvents and contaminants, such as laundry soils, fabric treating agents.

Abstract: A solids removal system for use in removing sand and silt from well production fluids. The system has a manifold assembly provided with jetting nozzles, which is installed in a liquid and solids-containing vessel, where solids have settled in the walls. The jetting nozzles deliver, in a pre-determined sequence, a solids-dislodging fluid, causing the solids to become suspended in the fluid. The dislodged solids and fluid are then extracted by pump from the vessel and directed to a solid-fluid separator. Solids-free fluid is returned for re-re-circulation through the vessel, while the solids are moved to a containment location.

Abstract: A method of cleaning encrusted ballast comprises the steps of screening the encrusted ballast to separate detritus from the ballast, washing the screened ballast with water while removing the separated detritus on a conveyor belt unit, clarifying the washing water to produce a clarified water portion and washing water sludge, and disposing of the washing water sludge by moving it to the detritus on the conveyor belt unit for common removal with the detritus.

Abstract: The present invention relates to a process for treating a lipophilic fluid contained in an emulsion of water and lipophilic fluid. The process includes the steps of pre-treating the emulsion, removing lipophilic fluid from the emulsion, and purifying the lipophilic fluid to remove at least a portion of the impurities collected during the use of the emulsion. Method options are provided for each of the aforementioned steps.

Abstract: A process for removing an aqueous slurry suspension comprising a blast medium and coating substance residues which produced when cleaning surfaces which have a corrosion protection coating. The process, which is particularly applicable to ships and industrial facilities, involves the steps of a) suctioning the aqueous slurry suspension by means of an air feed into a receiving tank which has an outside pressure to tank vacuum ratio of more than 1:0.52; b) diluting the suspension with water; c) continuous feeding of the diluted suspension by means of a pump overcoming a height differential>5 meters; d) separating the solids from the water by means of sedimentation in a settling tank; and e) recycling the separated water. Suctioning of the aqueous slurry suspension is by means of air into receiving a tank which has a vacuum of at least 0.5 bar with respect to atmospheric pressure, in combination with a pump which continuously feeds the water-diluted suspension over a height differential>5 meters.