Abstract: A free flowing phosphate-free particulate heavy duty laundry detergent is comprised of particles of a mixture of sodium carbonate and sodium bicarbonate having nonionic detergent in the interior and on the surface thereof, to which is adhered a coating of smaller particles of ion exchanging zeolite. The product made is exceptionally free flowing and, although the particles are relatively large, is also of high bulk density (over 0.6 g./cc.). Also within the invention is a method of making such products by contacting the particles of mixed sodium carbonate and sodium bicarbonate with a normally liquid or pasty nonionic detergent in the liquid state so that the detergent is largely absorbed by the particles and coats the surfaces thereof, which are then coated with powdered zeolite which adheres to the surface nonionic of the particles and makes them free flowing.

Abstract: A composition which contains aluminosilicate detergency builder materials in an intimate mixture with an inorganic salt, a water-soluble or water-dispersable organic agglomerating compound having a melting point between 10.degree. C. and 100.degree. C., and a water soluble soap of a fatty acid.

Abstract: A method for complexing metal oxide particles in an organic medium is disclosed. The method comprises incorporating into said medium an effective amount of a complexing agent of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl and alkenyl groups containing from 4 to 22 carbon atoms, aryl groups containing from 4 to 10 carbon atoms, alkyl and alkenyl groups containing from 4 to 22 carbon atoms substituted with one or more aryl groups containing from 4 to 10 carbon atoms and aryl groups containing from 4 to 10 carbon atoms substituted with one or more alkyl or alkenyl groups containing from 1 to 22 carbon atoms; R.sub.2 is selected from the group consisting of hydrogen, --(CH.sub.2 CH.sub.2 O).sub.

Abstract: Process for removal of water from a mixture of water and certain solid residues of carbonaceous material, such as a coal char-water slurry, which comprises mixing the slurry with an acid, preferably hydrochloric acid, a surfactant, preferably water-immiscible such as lecithin, and an organic compound such as a liquid hydrocarbon, e.g. mineral spirits, causing the char to agglomerate, and thereby facilitating separation of the char from the mixture, as by screening, and filtering or centrifuging.

Abstract: A device for the formation of a granulated substance. The device has a container which is open at the bottom and can be closed off by a movable bottom member of solid construction. Additionally, two other bottom members, which have lattices with different mesh widths or openings, can be optionally moved under the container instead of the solid member, which bottom member does not have openings. A stirrer is arranged in the container, which has a top container section that contains a filter connected to a suction fan. In order to form a granulated substance, the container is first closed off by the solid bottom member and a powdery material and a liquid are introduced into the container for mixing with each other by means of a stirrer. Subsequently, the solid bottom member is replaced by one of the lattice bottom members and warm air is drawn into the container. In this way, the humid mixed material is whirled about, dried and granulated.

Abstract: A sonic agglomeration system wherein high sound intensity and resonance are maintained with a low power input. These functions are attained through the use of a chamber feed-horn design that promotes resonance and maximized the efficiency of sound transfer between a sound producing compression driver and a resonant chamber. A digital controller maintains efficient resonance in the chamber and an efficient agglomeration rate constant by making adjustments in the frequency, sound amplitude and nuclei injection rate of the system.

Abstract: A non-caking and freely flowing granulated composition of high abrasion-resistance which comprises a polymer phosphate and an ion-exchanging alkali metal aluminum silicate is disclosed. At least part of the polymer phosphate in said composition is a highly condensed phosphate, preferably of a phosphorous pentoxide-content between about 64% and about 69%. Said polymer phosphate may contain sodium tripolyphosphate in an amount between about 95% and 0% by weight and preferably between 80% and 60% by weight. Such a composition may also contain a water-soluble tenside which is liquid at room temperature. The process of producing such a granulated composition comprising a highly condensed phosphate and an alkali metal aluminum silicate, comprises granulation of the mixture of polymer phosphate and alkali metal aluminum silicate by spraying water or a tenside solution thereon.

Abstract: A fixed fluidized particulate solids bed heat recovery vessel or steam generator having indirect heat exchange means within a bed of fluidized carbonaceous solids, such as coke, pelleted carbon black and the like, and introduction of a gas containing entrained solids to effect fluidization of the bed of carbonaceous solids wherein in a preferred embodiment, the reaction effluent from a carbon black reaction zone comprising carbon black suspended in a non-oxidizing gas is preferably quenched, e.g., using water and/or cooled recycled reaction effluent and is then further cooled using a fluidized fixed bed of carbonaceous solids having a cooling coil within the fluidized bed.

Abstract: A detector for thermoluminescence dosimetry (TELDE.TM.) based on an ionic compound is shaped as a pellet. The pellet is composed of a plurality of single-crystal particles bonded together by molecular forces. A method for manufacturing such a detector is carried out by melting a powdered ionic compound in vacuum and then slowly cooling it whereby a pellet is formed.

Abstract: A method for producing agglomerate particles from finely divided carbonaceous solids by mixing the solids with oil in an aqueous medium in a first mixing zone; passing the mixture to a second mixing zone; and mixing an additional quantity of finely divided carbonaceous solids with the mixture in the second mixing zone.

Abstract: The preparation of dry, stable granular material from water-soluble potassium and ammonium salts and a mixture thereof by subjecting a dispersion of crystals of the salt in an aqueous liquid to the action of a granulating device in the presence of calcium sulphate hemihydrate and a hydrophilic surface active agent to effect agglomeration of said crystals, and thereafter subjecting the agglomerated crystals to a drying operation.

Abstract: A free flowing phosphate-free particulate heavy duty laundry detergent is comprised of particles of a mixture of sodium carbonate and sodium bicarbonate having nonionic detergent in the interior and on the surface thereof, to which is adhered a coating of smaller particles of ion exchanging zeolite. The product made is exceptionally free flowing and, although the particles are relatively large, is also of high bulk density (over 0.6 g./cc.). Also within the invention is a method of making such products by contacting the particles of mixed sodium carbonate and sodium bicarbonate with a normally liquid or pasty nonionic detergent in the liquid state so that the detergent is largely absorbed by the particles and coats the surfaces thereof, which are then coated with powdered zeolite which adheres to the surface nonionic of the particles and makes them free flowing.

Abstract: A powdered sodium percarbonate composition is provided which exhibits significantly improved percarbonate stability during storage. The sodium percarbonate is stabilized by a phosphate containing compound such as sodium tripolyphosphate or sodium orthophosphate. The powdered sodium percarbonate composition is useful as a powder bleach and preferably comprises a separation resistant bleach composition in the form of a plurality of particles, substantially each particle including sodium carbonate, sufficient sodium percarbonate to provide from about 1 to about 6 weight percent available oxygen, and sufficient of the phosphate containing stabilizer to retard decomposition of the percarbonate.

Abstract: A method and apparatus are provided for controlling the amount of dry particulate matter and liquid added to a rotary pelletizer. A transducer placed within the pelletizer senses a characteristic of the mixed material in the pelletizer. This characteristic may be, for example, the level of the batch or the size of the pellets. The transducer signal is then conditioned to provide a signal level corresponding to a desired characteristic level and which varies about that level corresponding for example to the variations of pellet size about a desired size. That signal is added to a second signal representing the actual liquid flow into the pelletizer or added to a second signal representing actual dry particulate flow into the pelletizer and modulates that respective flow to maintain the input of either the dry or the liquid material into the pelletizer as necessary. Additionally, a set point signal can be provided as a constant signal representing desired dry particulate in flow or liquid in flow.

Abstract: A process for recovering and using fines of flux, such as limestone, used in a metallurgical process, such as oxygen steelmaking, is described. The process involves collecting fines from a receiving zone, e.g., with blower and baghouse equipment. The fines so collected are then conveyed, as by a dense-phase conveyor, to a first processing zone containing a first screening means for screening flux material which is to be fed to the process. Material not passing through said first screening means is fed to the metallurgical-process vessel, but fines passed by the first screening means are collected and formed into briquettes. The briquettes are conveyed to a second processing zone which is located above the conveyor which leads from the receiving zone to the first processing zone mentioned above. The second processing zone contains a second screening means and means for storing and releasing to the said conveyor the briquettes or portions thereof which have not passed through said second screening means.

Abstract: A process for the preparation of a cation-exchanging alkali metal aluminosilicate granulate having a particle size of from 0.05 to 1 mm comprising (a) charging a finely-divided, crystalline water-containing alkali metal aluminosilicate powder having a calcium binding power of from 50 to 200 mg CaO/gm of anhydrous aluminosilicate and a particle size of less than 30.mu. into a conventional granulator, (b) adding thereto (i) m moles of SiO.sub.2 as an aqueous alkali metal silicate solution or an aqueous silicic acid sol, and (ii) n mols of Al.sub.2 O.sub.3 as an acidic hydrolyzing aluminum salt and/or alkali metal aluminate powder and/or an aqueous alkali metal aluminate solution, (c) mixing until the moisture is uniformly absorbed and a granulate with a particle size of 0.05 to 1 mm is formed, and (d) drying said granulate at 80.degree. to 150.degree. C.

Abstract: An aqueous pulp or slurry containing cement copper particles is treated with conditioner and hydrophobic bridging liquid to form agglomerates of the cement copper particles, which agglomerates are then separated from the aqueous phase.

Abstract: A process for reducing the sodium chloride content of crystalline potassium salts without the use of successive recrystallization. The crystalline potassium salts having a sodium chloride content greater than about 0.8 percent by weight are subjected to compacting and crushing to provide a crystalline product having an average particle diameter less than 1.6 millimeters. The crystalline product is leached with a brine at least about 80 percent saturated with said potassium salt and less than 50 percent saturated with sodium chloride to produce a crystalline potassium salt product containing less than about 0.35 percent by weight of sodiumchloride.

Abstract: Zeolite agglomerates which when admixed with conventional laundry detergent formulations remain uniformly distributed and upon contact with hard water rapidly disperse and sequester the hardness cations thereof are comprised of zeolite crystals in a matrix of an ethoxylated linear alcohol and sodium citrate.

Abstract: The aqueous slime waste product of a phosphate ore beneficiation process is dewatered by agglomerating the solids thereof using a conditioner and a hydrophobic bridging liquid.

Abstract: Granular detergent compositions comprising at least 15% sodium tripolyphosphate are prepared by agglomeration with an agglomerating agent comprising an alkali metal silicate solution such process comprising addition of such agglomerating agent to a first portion of sodium tripolyphosphate and the addition of a second portion of sodium tripolyphosphate to the mixture of said first portion and the agglomerating agent after at least about 30% of the agglomerating agent has been added.

Abstract: A process for the manufacture of low-phosphorus or phorphorus-free spray dried detergents containing at least one water-soluble inorganic or organic compound exerting a washing or cleansing effect and at least one compound inhibiting alkaline earth metal ion precipitation comprising a finely-dispersed, water-insoluble, bound water-containing silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and having the formula, combined water not shown,(M.sub.2 /.sub.n O).sub.x . Me.sub.2 O.sub.3 . (SiO.sub.2).sub.ywhere M is a cation of the valence n, exchangeable with calcium, x is a number of from 0.7 to 1.5, Me is a member selected from aluminum and boron and y is a number of from 0.

Abstract: Steel mill wastes are treated to recover the iron values thereof by a two stage agglomeration process wherein relatively small size first agglomerates are formed by agglomeration of steel mill wastes from an aqueous suspension thereof and then relatively large size second agglomerates are formed by agglomeration of said first agglomerates from a suspension thereof in a hydrophobic organic liquid and simultaneously a reactant chemical reacts with the agglomerates to provide a solid binder material formed in situ during the second agglomeration procedure.

Abstract: Granular detergent compositions containing alkali metal polyphosphates are prepared by spraying an aqueous sodium silicate solution onto anhydrous alkali metal polyphosphates and optionally onto other dry ingredients, said aqueous sodium silicate solution containing from about 2% to about 20% by weight of a hydratable salt.

Abstract: A method for the consolidation of fine alumina particles, like those made by the dry oxidation of aluminum chloride, to produce a metallurgical grade alumina that resembles Bayer alumina in the following properties; dissolving as well in a Hall cell; absorption of water; absorption of hydrogen fluoride gas to eliminate that contaminant from the Hall cell offgases in a fluid bed; bulk density; particle size distribution; purity and handling.The method comprises the uniform admixture of caustic soda solution, compressing, autoclaving, then drying and calcining the mass; finally crushing and screening the solid product with recycling of the fines.

Abstract: A pourable agglomerated aluminosilicate builder composition comprising(A) from 20% to 70% by weight of at least one finely-divided, synthetically-produced, water-insoluble aluminosilicate compound containing at least some combined water and having a calcium binding power of at least 50 mg CaO/gm of anhydrous active substance and the formula on the anhydrous basis(M.sub.2/n O).sub.x. Me.sub.2 O.sub.3.(SiO.sub.2).sub.ywhere M is a cation of the valence n, exchangeable with calcium, x is a number from 0.7 to 1.5, Me is aluminum or boron, and y is a number from 0.8 to 6, and(B) from 30% to 80% by weight of at least two water-soluble alkali metal salts containing water of crystallization selected from the group consisting of tripolyphosphates, pyrophosphates, orthophosphates, sulfates, carbonates, metasilicates and borates; as well as the process of production of the same.

Abstract: A granulation process for the production of high purity granules of salt material comprising:(a) a wet blend formed by intensively mixing together(i) particles of soluble fine water-soluble salt having a relatively wide size distribution over the range of from about -30 to about +325 screen size (Tyler mesh),(ii) water insoluble particles of about -150 screen size (Tyler mesh) with surface area above 1 M.sup.2 /gr, and(iii) sufficient water or saturated water solution to provide a moisture content of up to about 20% and preferably in the range of from about 5 to 15% by weight of the mixture,(b) granulating the wet blend from (a), preferably by pan granulation, and(c) drying and recovering the granular product.The product comprises a granular salt product which has the properties of high purity (up to 99% salt), uniform size distribution in the range of from about 2 to 4 mm, a crush strength of greater than about 3 lb/granule and generally in the range of from about 5 to 10 lbs.

Abstract: A process for the manufacture of a free flowing granular dishwasher detergent having enhanced chlorine stability over extended periods of shelf life is disclosed. The process comprises mixing in a ventilated vessel, a dry mixture of sodium tripolyphosphate and chlorinated trisodium phosphate. The ratio of the volume of the dry mixture and the volume of the vessel is between about 1:25 and 1:8. An aqueous solution of silicate is sprayed onto the dry mixture to form an agglomerate during hydration of the sodium tripolyphosphate. The formed agglomerate is sprayed with a nonionic surfactant. The treated agglomerate is coated with a silicate. The coated agglomerate is mixed in the vessel while being discharged from the vessel. The silicate coated agglomerate inhibits chlorine loss from the dishwasher detergent over extended periods.

Abstract: A non-caking and freely flowing granulated composition of high abrasion resistance, said composition containing a polymer phosphate and an ion exchanging alkali metal aluminum silicate is provided. At least part of the polymer phosphate in said composition is a highly condensed phosphate, preferably of a phosphorus pentoxide content between about 64% and about 69%. Said composition may contain sodium tripolyphosphate in an amount between about 95% and 0% by weight and preferably between 80% and 60% by weight. Such a composition may also contain a water-soluble tenside which is liquid at room temperature. The process of producing such a granulated composition of a highly condensed phosphate and an alkali metal aluminum silicate to which sodium tripolyphosphate and a tenside may be added, comprises granulation of the mixture of polymer phosphate and alkali metal aluminum silicate by spraying water or a tenside solution thereon. Preferred tensides are ethoxylated nonylphenols.

Abstract: Agglomerated granular detergent compositions containing at least about 10% sodium tripolyphosphate on an anhydrous basis and from 4% to 20% of an alkoxylated nonionic surfactant are prepared by spraying on or otherwise adding an aqueous sodium silicate solution as an agglomerating agent. The rate of hydration of the sodium tripolyphosphate and the degree of agglomeration of the granular detergent composition is controlled by addition of a portion of the total surfactant to one or more dry ingredients other than a major part of the sodium tripolyphosphate and the addition of another portion of the surfactant to the major part of the sodium tripolyphosphate concurrent with or subsequent to the addition of the agglomerating agent to the sodium tripolyphosphate.

Abstract: An apparatus for applying adhesive to fibrous material in which a generally horizontal cylindrical member is provided having an inlet in the top near one end and an outlet in the bottom near the other end. A shaft is rotatable on the axis of the cylindrical member and has radially extending tools thereon angularly spaced from one another and disposed in a substantially helical path along the shaft. The tools nearest the inlet have a passage means therein through which adhesive is supplied to fibrous material introduced into the inlet while the others of the tools admix the adhesive with the fibrous material.

Abstract: A method and apparatus are disclosed for drying and pelletizing organic material such as animal waste, sewage and the like. The organic material is dried in two stages using a high temperature, rotating primary drying drum, and a lower temperature secondary louvred drying drum. The primary drum includes an inlet section and an outlet section. The inlet section includes a plurality of transverse chain curtains for increased heat transfer to the organic material, for breaking up the organic material and for cleaning the sides of the drum. The primary drum outlet section includes a plurality of vanes angularly attached to the inside of the drum to form an auger to retain the material in the drum until it is partially dried to a desired level. The organic material is then transported to the secondary louvred layer. The louvred dryer includes an input section, an output section and a central pelletizing section formed by adjacent portions of the input and output sections.

Abstract: In a process and apparatus for the treatment of liquids containing solid particles, the mixture is first formed into a film to run down the walls of an enclosure having a frustro conical top wall and be subjected to a drying gas flow, and the partially dried mixture is then led back to a spray inlet to discharge as an atomized spray within the same enclosure for a second stage of drying, which may include combustion of solid particles, also within the same enclosure.

Abstract: Rotation of a first drum member at a preselected speed intimately mixes finely divided agglomerative materials to form a loosely coherent, plastic sticky mass. The tumbling action generated by the rotating drum breaks up the loosely coherent, plastic mass into plastic particles or agglomerates which grow in size as they roll within the first drum member. The formed agglomerates are conveyed by rotation of the first drum member into a second drum member that includes an inlet portion surrounding the outlet portion of the first drum member. The second drum member has a longitudinal axis that is coplanarly aligned with the longitudinal axis of the first drum member and both drum members are independently rotated at preselected peripheral speeds with the angle of inclination of the first drum member being adjustable relative to the second drum member to control the movement of the agglomerates.

Abstract: Apparatus for contacting fused solid materials with solid, liquid or gaseous materials, comprising a rotary drum, longitudinal baffles along the inner drum wall inside the apparatus, coaxial consoles being joined in a liquid- and gas-tight manner to faceplates of the drum, for lodging feeding and removing mechanisms. It is a major feature of the invention that a diverter baffle system is mounted from the consoles throughout the interior length of the drum. Two preferred embodiments are described: one for formulating plant protecting agents, wherein the baffle system includes a row of diverting baffles that can be pivoted inside the drum. The other preferred embodiment is suitable for extracting vegetable materials, and here the baffle system is constituted by a stationary drum having a slanting lapping formed therein, similarly pivotable diverting baffles being arranged along the lapping. Various additional and some optional structural features are disclosed for both apparatus embodiments.

Abstract: A method for densifying a fumed metal oxide of Groups III and IV prepared by either a vapor phase oxidation or combustion process is disclosed wherein the metal oxide is mixed with a polar liquid in a high shear mixer, the metal oxide being present in an amount of about 35-50%, to convert it into a granulated material which, when dried, will substantially all pass through a 10 mesh screen. The granulated material may then be calcined preparatory to wet milling to prepare a casting slip, or it may be vitrified directly for molding or drawing in known manner.

Abstract: A method of increasing the bulk density of silica dust is disclosed. The silica dust is treated in a drum preferably having internal ribs whereby its bulk density is substantially increased.

Abstract: A low density, free-flowing, granular phosphate product having a high oil absorption capacity and capable of dissolving in water to provide a solution of pH about 7 to 8 is provided by mixing a hydratable alkali metal phosphate, polyphosphoric acid, and sodium carbonate and/or sodium bicarbonate and granulating the mixture with water.

Abstract: A first cylindrical drum member has an inlet portion for receiving a supply of agglomerative materials, such as preheated coal and char. The first drum member has a longitudinal axis and an outlet portion through which the agglomerated product is discharged into the inlet end portion of a second cylindrical drum member. A second drum member is supported for rotation independently of the first drum member in tandem relation therewith and has a longitudinal axis copolanarly aligned with and intersecting the longitudinal axis of the first drum member. A rotary scraper is rotatably positioned within the first drum member in spaced relation to the inner cylindrical wall thereof and has a longitudinal axis spaced from the longitudinal axis of the first drum member. The scraper has a tubular body portion that is rotatably supported adjacent the inlet and outlet portions of the first drum member.

Abstract: A method is disclosed of separating a suspension of fine tailings particles from a material of value in a liquid medium which comprises, adding a small but effective amount of fluocculant to said liquid medium while mixing said liquid medium and continuing said mixing to effect flocculation of said fine tailings particles, passing said liquid medium containing said flocculated particles to a rotating pelletizing drum and subjecting said medium to the rotational action of said drum to pelletize said flocculated tailings particles, thickening said pelletized tailings particles to provide an underflow of said pelletized tailings particles, and disposing said pelletized tailings particles.

Abstract: A granular colored speckle is provided having non-staining qualities comprising a granular, water-soluble, hydratable, inorganic alkaline salt agglomerated with an anionic surfactant paste as the adhesive agent containing the coloring agent. The granular colored speckle is particularly useful in admixture with white or lightly colored detergent granules to provide a speckled composition.

Abstract: A composition is described herein which contains aluminosilicate materials characterized in their ability to exchange sodium ions for calcium and magnesium ions. The composition also contains, in an intimate mixture with the aluminosilicate, an inorganic salt and a water-soluble or water-dispersable organic agglomerating compound having a melting point between 30.degree. C and 100.degree. C. The particulate composition described above is suitable for water softening per se or for admixture into detergent compositions.

Abstract: An improved process for pelletizing siliceous materials produced in an aqueous medium is disclosed. The process comprises the improvement of filtering the aqueous medium in which the siliceous materials are produced or refined, forming a slurry of the filter cake obtained by filtration and thereafter introducing the slurry directly into a pelletizer. The pellets thus formed are dried and a portion thereof recycled to the pelletizer so that the solids content of the slurry has a predetermined solids content. The process obviates the need for an initial drying of the filter cake, reduces the drying of excess water at several steps and provides for the recycling and use of unsatisfactory materials.

Abstract: A first cylindrical drum member is rotatably supported on a platform assembly and has a longitudinal axis that is coplanarly aligned with the longitudinal axis of a second cylindrical drum member that is supported independently of the first drum member and positioned in tandem relation thereto. The first drum member has an inlet end portion through which a pair of feed screw conveyors extend to supply agglomerative materials, such as preheated coal and char, to the inner portion of the first drum member. An outlet portion of the first drum member extends into the inlet portion of the second drum member. A platform assembly is provided that includes a pair of vertically extending leg portions through which a pair of shafts transversely extend to permit pivoting the first drum member. The longitudinal axes of the respective drum members intersect at the transverse axis formed by the shafts so that the platform assembly is arranged to pivot about the intersection of the respective longitudinal axes.

Abstract: A coke oven system is provided having a coke oven preferably with pipeline charging for converting coal into coke. Carryover fines are collected from the coke oven and preferably a preheater therefor, and then agitated by agitator means and the collected carryover fines thereby agglomerated. Preferably, the carryover fines are first mixed with water to form an aqueous mixture, and then agglomerated. The agglomerated carryover fines are then preferably separated from the aqueous mixture by separated means. The agglomerated carryover fines are preferably conditioned in dryer means and recirculated to the coke oven preferably through a preheater.

Abstract: A new method for the preliminary treatment of the raw materials used for sintering of powdery iron ore is provided, in which the hydrophilic binder is dividedly incorporated in a first treatment step and/or a second treatment step. The solid carbon is also dividedly incorporated. The high productivity and quality of the product can thus be maintained and also the NOx conversion rate can be largely decreased.

Abstract: A device for coating granular solids has a rotary drum and a casing or housing air-tightly housing the rotary drum. The space between the rotary drum and the casing is divided by sealing means into a gas supply passage and a gas exhaust passage which in turn are communicated with a gas supply duct and a gas exhaust duct, respectively. The rotary drum is of a double-cone structure consisting of a cylindrical section and frustoconical side walls, and the cylindrical section consists of a plurality of circumferentially arcuated louvers overlapped one upon another and radially spaced apart from each other at a suitable distance to define gas passages between the interior and exterior of the rotary drum.

Abstract: An improvement in the process for the production of spray dried detergents containing nonionic tensides where the aqueous detergent slurry containing from 50% to 90% by weight of the total solids of the final spray dried detergent and from 0 to 5% at the most by weight of the total solids of nonionic tensides is sprayed into a conventional spray drier and simultaneously at the area of the spray cone a watersoluble powder is injected consisting of the remainder of the total solids of the final spray dried detergent having at least one nonionic tenside deposited thereon as a granulate where the ratio by weight of solids to nonionic tenside amounts to 50:1 to 5:1; whereby larger amounts of nonionic tensides can be incorporated into the final spray dried detergent without increased heating costs.

Abstract: Detergent formulations are granulated commercially by spray drying a slurry of the formulation. There is now proposed a method in which the components in powder form are granulated with a binder in a substantially horizontal annular rotating bed. The binder may be released by the action of the rotating bed.

Abstract: Essentially dry hygroscopic dust recovered from the waste gas of a glass melting furnace is agglomerated with coarser particles of silica sand, calcium carbonate or dolomite having a moisture content of 5-20%, by weight, by intimately mixing the dust and coarser particles, and tumbling the mixture until particles of the dust are attached to the moisture-containing coarser particles.