772 results about "Wet-milling" patented technology

A tablet that rapidly disintegrates in the oral cavity comprising a compressed blend of rapidly dispersing microgranules prepared by granulating a sugar alcohol or a saccharide or a mixture thereof having an average particle size less than about 30 microns and a disintegrant, and a taste-masked microcapsule containing at least one drug, the microcapsule being prepared by granulating a pharmaceutically acceptable formulation comprising at least one drug in a therapeutically effective amount and at least one polymeric binder that improves resilience of the microgranules, wet milling the granulated mass, and microencapsulating the milled granules to provide microcapsules.

A process for the fractionation of valuable fractions from cereal brans (e.g. wheat, barley and oat brans, and rice polish) is described. In particular, this invention describes a two step process, in which the said bran is first subjected to a combination of enzymatic treatment and wet milling, followed by sequential centrifugation and ultrafiltration, which aims at physically separating the main bran factions, i.e. insoluble phase (pericarp and aleurone layer), germ-rich fraction, residual endosperm fraction and soluble sugars. A second step consists of fractionating cereal brans substantially free of soluble compounds, hence insoluble phase from the above-mentioned first step, by enzymatic treatment with xylanases and/or beta-glucanase and wet milling, followed by sequential centrifugation and ultrafiltration, which aims at physically separating the main fractions, i.e. insoluble phase (remaining cell wall components), protein-rich fraction, soluble hemicellulose and oligosaccharide, and therefore maximizes the extraction rate of valuable cell wall components and aleurone cells from previously cleaned bran.

The invention discloses a method for producing graphene, which comprises the step that: graphite powder is subjected to wet ball milling in organic solvent, wherein the surface tension of the organic solvent is 30 to 45 mNm-1; and the surface of a milling ball used for the wet ball milling is wrapped with soft polymer. After adopting the scheme, the method selects and uses a ball milling process widely applied in the actual production to peel off graphite. Compared with the prior art, the method has the following advantages that: 1) the damage of rigid collision between the milling balls to the graphite crystal structure is effectively reduced by adopting the soft polymer to wrap the hard milling balls, meanwhile, the soft polymer has stronger friction force with the graphite so as to greatly improve the milling and peeling effects, and the yield of the graphene can reach 30 to 50 weight percent; 2) the adopted ball milling process is easier to expand the scale and implement industrialized production; 3) except little defect at the edge part, the graphene crystal structure is kept intact; and 4) the graphene product has even thickness which is kept between 1 and 2 carbon atom layers.

A method of milling substantially insoluble solid organic biocides to form a micron or sub-micron product having a narrow particle size distribution is presented. The milling involves wet milling of the organic biocide with high density milling media having a diameter between 0.1 mm and 0.8 mm, preferably between 0.2 mm and 0.7 mm, and a density equal to or greater than 3.8 g/cc, preferably greater than 5.5 g/cc, in a ball mill using between about 40% and 80% loading of the mill volume with milling media, and having the organic biocide suspended in an aqueous milling liquid which comprises one or more surface active agents. The milling speed is preferably high, for example from about 1000 rpm to about 4000 rpm. The milled product can be used in foliar applications at a lower effective dosage than prior art formulations, can be used in improved antifouling paint formulations, and can be used in new applications such as the direct injection of solid organic biocide particulates in wood to act as a long lasting wood preservative.

An improved method for processing corn into ethanol and other valuable co-products. The invention generally involves a multi-step process which produces germ (or oil), protein, and feed yeast as its co-products while maintaining or enhancing the provision of fermentable sugar to ethanol fermentation. This is accomplished by fundamentally altering the way the corn is fractionated, disrupting the cell walls rather than the protein matrix as is done in conventional wet milling.

The invention provides a technical method for producing isostatic pressure graphite, which comprises the following steps: using refinery coke or pitch coke as raw materials; crushing raw materials to 5 to 20 mum through airflows; then, carrying out treatment through work procedures such as primary mixing squeezing and sheet milling, extrusion forming, fast carbonization, crushing, sieving, secondary mixing squeezing and sheet milling, crushing, sieving, pre-forming, isostatic pressure forming, calcination, impregnating, graphitization and the like; and obtaining fine particle isostatic pressure isotropical graphite materials. Compared with traditional coarse particle graphite materials, the invention has the characteristics of fine and compact structure, good uniformity, excellent mechanical property, isotropy and the like, and is particularly suitable for the production of large-specification graphite products.

The invention provides a method of preparing a pharmaceutical composition comprising: (a) combining progesterone particles with a liquid carrier to provide a mixture; (b) wet-milling the mixture to provide a wet-milled progesterone composition; and (c) processing the wet-milled progesterone composition to provide a pharmaceutical composition. Pharmaceutical compositions prepared by the method are also provided.

The utility model relates to a thermistance material with high uniformity and negative temperature coefficient. The main formulation is one in the six systems of Mn-Ni-Cu, Mn-Co-Cu, Mn-Co-Ni-Cu, Mn-Co-Fe-Cu, Mn-Co-Ni or Mn-Co-Fe. The combination of at least two of the oxides as CaO, ZnO, SiO2, Al2O3, Fe2O3, MgO, Cr2O3, TiO2, Sb2O3, Bi2O3, SrO, Nb2O5 and B2O3 are added to the main formulation. The utility model also relates to a preparation method for preparing the thermistance material with high uniformity and negative temperature coefficient, comprising the following steps: mixture making, primary wet milling, drying, calcining, and secondary wet milling, drying and granulating, pressing and forming, and sintering. The utility model has the advantages that: the thermistance material with negative temperature coefficient (NTCR) made by the method has high uniformity and high repeatability; the specific resistance uniformity of the same batch material is all better than plus or minus 1%; the specific resistance error of different batches does not exceed plus or minus 2%; the error of value B does not exceed plus or minus 1%; the utility model is suitable for mass and large-scale production.

Methods of manufacturing alumina abrasive for use in chemical mechanical polishing are described, wherein the abrasive is in a slurry having gamma alumina formed in a low temperature fuming process, water, an acid sufficient to maintain the pH below about 7, wherein the slurry does not settle appreciably in an 8 to 24 hour period. Advantageously, the alumina is wet-milled without the use of wet-milling salt additives.

This invention relates to rapidly dispersing microgranules comprising at least one sugar alcohol or saccharide, at least one super disintegrant, and a pharmaceutically acceptable additive with multi-functionality (e.g., starch acting as a binder, disintegrant, diluent/filler, glidant, etc) at a low level, which can be formed by not only eliminating a wet milling step but also avoiding an extensive dry milling step. Furthermore, such rapidly dispersing microgranules could also comprise a pharmaceutically active agent thereby providing for a pharmaceutical composition, or the rapidly dispersing microgranules thus produced are suitable for blending with a pharmaceutically active agent that is optionally taste-masked and/or controlled release coated microparticles to also provide for a pharmaceutical composition and the invention is also directed to a method for manufacturing such rapidly dispersing microgranules in a high useable yield, as well as orally disintegrating tablets comprising such rapidly dispersing microgranules. The rapidly dispersing microgranules are also free flowing.

In one example of an embodiment of the invention, a method for producing an aggregate is disclosed comprising mixing sewage sludge from a waste water treatment facility with a non-coal combustion ash silicoaluminous waste material, agglomerating the mixture to form an agglomerate, and pyroprocessing the agglomerate to form an aggregate. The waste material may comprise municipal solid waste incinerator bottom ash, incinerator fly ash, incinerator filter dusts, cement kiln dusts, waste glass, blast furnace slag, kiln dusts, and/or granite sawing residues, for example. The method may further comprise milling the waste material prior to mixing. Preferably, the milling is wet milling. Pyroprocessing of the agglomerate may take place in a rotary kiln. The resulting aggregate may be a lightweight or a normal weight, sintered or vitrified aggregate. Aggregates and methods for making aggregates of high and low calcium silicoaluminous materials are also disclosed.

The hard alloy producing process includes compounding material, wet milling, adding glue, molding to form, loading the plain blank into boat, covering with pure carbon black, sintering in sintering furnace under the protection of hydrogen, and post-treatment to eliminate internal stress and to obtain the hard alloy with gradiently distributed Co content. Owing to the sintering and carburizing with pure carbon black as carburizing agent and the increased post-treatment step, the advanced technological process has high reliability, strong carburizing reaction activity, simple operation process, obvious Co content gradient in the hard alloy product, high comprehensive mechanical performance, low production cost, and other advantages.

The invention provides a method for directly producing high-purity electronic level cobaltous sulfate by using cobalt-containing waste, in particular a process for producing cobaltous sulfate by using cobalt-containing waste. The method comprises the steps of: checking and classifying raw materials, wet-milling and size-mixing, acid-decomposing, filtering, washing, separating, and extracting copper sponge. The method is characterized by also comprising the steps of: removing iron with a goethite process, extracting P2O4 and removing impurities, separating nickel from cobalt, extracting N235, purifying, concentrating and crystallizing. The high purity electron level cobaltous sulfate is directly regenerated by using various kinds of cobalt wastes, the requirement of the modern high-technology industry on high purity of the cobaltous sulfate is met; the total recovery of the cobalt is higher than or equal to 98 percent; various usable elements can be comprehensively recycled, and coppersponge, tungsten carbide, iron hydroxide and nickel carbonate can be regenerated while the electronic level cobaltous sulfate as a main product is regenerated. The invention has the advantages of comprehensively utilizing waste cobalt resources, recycling the wastes, improving the enterprise benefit, and being beneficial to the development of energy conservation, emission reduction, environment protection and circular economy.

A process for the fractionation of oilseed cakes and meals (e.g. rapeseed cake, soybean meal, and cottonseed cake) is disclosed. This invention describes a fractionation process, in which the said cake or meal is subjected to enzymatic treatment with polysaccharidases with intermittent wet milling, followed by heat treatment to facilitate separation of insoluble from soluble phase by centrifugal forces. Sequential centrifugation and ultrafiltration steps are carried out in order to yield a fibre-rich fraction, at least three protein-rich fractions, in the case of oilseed cakes at leas one emulsified oil fraction, a sugar-rich fraction, and a phytate-rich fraction. This invention also describes the use of the above-mentioned fractions in food, feed, nutraceutical and pharmaceutical applications.

A preparation method for producing cemented carbide mixture is disclosed, the raw materials of which comprises WC powder, WC-TiC solid solution and Co powder; adopting paraffin as forming agent, absolute alcohol as the medium of rubbing and adding oleic acid and stearic acid into the rubbing medium as dispersing agent. The technical process comprises the following steps: accurate batching, loading the heated molten and filtered paraffin into a ball mill for pre-rubbing; wet milling, putting the prepared material into the ball mill, adding right amount alcohol as the ball milling medium, simultaneously, adding dispersing agent, and then turning on the machine for wet milling; slurries filterring, unloading the slurries and filtering for 200-320 meshes; spray drying and pelletizing, spray drying and pelletizing the slurries by using spray drying equipment; and sieving, producing mixture material grain suitable for various kinds of pressing requirements. The method has the advantages of short production process flow, reliable and stable product quality and high production efficiency, which is suitable for large scale production operation and can be widely used for preparing cemented carbide mixture.

The wet production process of extracting vanadium and molybdenum from waste aluminum-base molybdenum catalyst includes successively ball milling material, mixing material, roasting to sodidize, wet milling and hot soaking, dephoshorization to purify, deposition to extract vanadium and molybdenum successively. The present invention is developed on the basis of weight vanadiuim extracting process and apparatus and realizes the simultaneous extraction of valuable vanadium and molybdenum.

Whole grain, such as wheat, barley, rye, and/or rice, can be processed by (a) steeping the grain in an aqueous liquid to produce softened grain, (b) milling the softened grain to produce milled grain, (c) liquefying the milled grain by contacting it with amylase and heating it to a temperature of at least about 50° C., producing a liquefied material, (d) at least partially saccharifying the liquefied material by contacting it with amyloglucosidase at a temperature of at least about 50° C., producing a first saccharified material, and (e) separating fiber and germ from the first saccharified material, producing a screened material that is substantially free of fiber and germ. The process also includes the steps of (f) further saccharifying and fermenting the screened material with a microorganism that produces ethanol, thereby producing a broth that comprises ethanol, soluble protein, and insoluble protein, and (g) separating ethanol from the broth. A protein-rich product can be recovered from the broth that comprises both gluten from the grain and microorganism from the fermenting step.

The invention discloses an optimal control method for grinding and grading mineral powder, which is characterized in that: the grinding load and grinding concentration is obtained by sampling grinding-grading process signal, with the help of the advanced control and through testing the state in the grinder; the optimal grinding load, the optimal sand-returning ratio, the optimal grinding concentration and the optimal overflow concentration are obtained through the grinding load optimization, the sand-returning ratio optimization, the grinding concentration optimization and the overflow concentration optimization; the feeding quantity is obtained through the control algorithm of the feeding quantity ; the sand-returning water volume is obtained through the control algorithm of the sand-returning water volume; the discharging water volume is obtained through the control algorithm of the discharging water volume. The optimal control method has advantages that: the global optimization to the grinding-grading process is realized; and meanwhile the diagnosis is done to reveal the fault of the grinding-grading process; the appraisal and analysis is executed in the grinding-grading process; reasonable advice is come out; continuous, stable, safe and economic running is ensured; so the method is widely used in the grinding-grading process and similar wet milling process in other industry crafts.

The invention discloses a production process for preparing ceramsite by using low-grade bauxite, comprising the steps of: crushing low-grade bauxite ore and then mixing with auxiliary materials to form a mixture; carrying out secondary wet milling until the granularity of slurry is 5-20 microns; after mustiness, pumping the slurry into a spray drying tower for drying granulating to form loose granules and then scattering the granules; after further spray rolling granulation, feeding into a drying-firing comprehensive system for drying and firing; and extracting out the afterheat generated in the firing process to the spry drying tower for utilization. According to the invention, the low-grade bauxite ore is used as the main material, so that the positive roles in rationally utilizing resources and reducing energy consumption are played; a wet ball milling process is adopted, so that the granularity distribution and mixing uniformity of mixed powder can be remarkably improved; by meansof the process of scattering spray granulated powder, the proportions of the pseudo granules and hollow granules in the spray granulated powder are decreased; and through the equipment integration design of the drying and firing processe, the damage rate of the semi-finished granules are decreased.

The invention discloses a method used for extracting iron from red mud by drastic reduction and a method used for preparing a gel material from secondary tailings, and belongs to the field of comprehensive utilization of resources. The method used for extracting iron from red mud by drastic reduction comprises following steps: Bayer process red mud is dried and crushed; the crushed red mud is mixed uniformly with a reducing agent and an auxiliary agent; the mixture is subjected to drastic reduction in a sealed container in a kiln with oxidizing atmosphere or reducing atmosphere; and the cooled material prepared by reduction reaction is subjected to wet milling and magnetic separation so as to obtain the iron powder of drastic reduction with iron grade of 90% or more, and iron recovery rate of 90% or more. The method used for preparing the gel material from secondary tailings comprises following step: the secondary tailings obtained after magnetic separation is dried, and are mixed uniformly with blast furnace slag, cement clinker, an exciting agent and an early strength agent; and then the secondary tailing gel material is prepared, wherein compressive strength and breaking strength of the secondary tailing gel material both meet the requirements of composite Portland cement 325 standard. According to the methods of the invention, the large amount of residual iron is recycled from the red mud, and the secondary tailings are used for preparation of the gel material, so that waste is transformed into valuables, the recovery of red mud iron resource is realized, and a problem of accumulation of red mud is solved.

The process of preparing hard W-Co alloy includes compounding material with WC powder and Co powder in 4-6 wt%, wet milling, drying, pelletizing after mixing with excipient, pressing to form, eliminating excipient, sintering and other steps. During compounding material, two kinds of WC powder, including great granularity component of 20-30 micron and fine granularity component of 1.2-1.8 micron in the weight ratio of 1.5-4.0, are used. The said process can compromise the wear resistance and toughness of hard alloy effectively to raise the comprehensive performance of alloy and expand the application range.