53results about How to "No crushing required" patented technology

The invention provides a siliceous composite material, comprising silicon particles and a clad wrapped on the surface of silicon particles, wherein, the clad is conducting polymer. The siliceous composite material provided by the invention takes the conducting polymer as the clad; the polymer does not need to be transformed further into 'hard carbon', and the siliceous composite material is guaranteed to have excellent conductivity; meanwhile, the aggregation between silicon particles can be avoided. When the composite material is taken as negative active material of a lithium iron battery, the lithium iron battery is ensured to have high reversible capacity and good cycle performance. Therefore, the invention can be taken as the negative active material of the lithium iron battery. As the polymer does not need to be transformed further into the 'hard carbon' and the siliceous composite material has good conductivity in the preparation of the siliceous composite material provided by the invention, the manufacturing technique is simplified and the problem of huge energy consumption caused by the high temperature carbonization process in the prior art is solved.

The invention provides a siliceous composite material, comprising silicon particles, graphite particles and conducting polymer, wherein, the conducting polymer is wrapped on the surface of the graphite particles; at least part of the silicon particles is adhered to the surface of the conducting polymer. The siliceous composite material provided by the invention takes the conducting polymer as a clad material; the polymer does not need to be transformed further into 'hard carbon' and the siliceous composite material is guaranteed to have excellent conductivity; meanwhile, the aggregation between silicon particles can be avoided. When the composite material is taken as negative active material of a lithium iron battery, the lithium iron battery is guaranteed to have high reversible capacity and good cycle performance. Therefore, the invention can be used as the negative active material of the lithium iron battery. As the polymer does not need to be transformed further into the 'hard carbon' and the siliceous composite material has good conductivity in the preparation of the siliceous composite material provided by the invention, the manufacturing technique is simplified and the problem of huge energy consumption caused by the high temperature carbonization process in the prior art is solved.

The invention discloses a method for producing a bioorganic fertilizer from pig manure, which comprises that: fresh pig manure of which the water content is about 65 percent is mixed with sawdust in proper proportion to make the ratio of carbon to nitrogen be between 16 and 25; the mixture is evenly stirred with geotrichum or Bacillus stearothermophilus zymophyte; composting fermentation is carried out; and the heap is turned regularly, when the temperature of the materials is reduced to the ambient temperature, and the materials are baked or dried by air and crushed to become the finished product of the bioorganic fertilizer. The bioorganic fertilizer has the nutrient content of 7 percent and the organic content of over 50 percent.

The invention relates to a method for preparing high-purity gamma-Fe2O3 iron oxide red pigment. The method includes the following steps: firstly, dissolving the ferrous sulfate solid in water, controlling the obtained solution to be at a certain temperature, adding a certain amount of a flocculating agent, and keeping at a certain temperature; after a certain time, filtering to obtain a refined ferrous sulfate solution; adding saturated ammonium bicarbonate solution into the refined ferrous sulfate solution for synthesizing iron carbonate and iron hydroxide precipitate with high magnetic properties under the conditions of a certain temperature and a pH value. According to the invention, the method is low in cost and simple and convenient to operate; the obtained product is high in stability and suitable for industrial production.

The invention belongs to the technical field of polymer materials, and discloses polyamide microspheres and a preparation method thereof. The polyamide microspheres are prepared from a polymer A, a lactam monomer B, a catalyst, a cocatalyst or / and a solvent, wherein the weight ratio of the polymer A to the lactam monomer B is 5:95 to 40:60, and the catalyst accounts for 0.2-5wt% of the total weight of the polymer A and the lactam monomer B; the cocatalyst accounts for 0.2-10wt% of the total weight of the polymer A and the lactam monomer B; and the solvent accounts for 50-500wt% of the total weight of the polymer A and the lactam monomer B. The invention also discloses the preparation method of the microspheres. According to the preparation method disclosed by the invention, any anionic polymerization initiator is not additionally added, the good solubility of the lactam monomer and the reaction characteristic of anionic ring-opening polymerization are used for preparing the polyamide microspheres through a one-step method, the process time is shortened, and the preparation method is more efficient and faster.

The invention discloses a method for producing chromium oxide green through sodium circulation. The method comprises the following steps: adding powdery chromite ores or ferrochromium powder into an alkali solution and introducing oxidation materials for reaction, and separating to obtain a sodium chromate alkali solution after full reaction; adding organic reducing substances into the sodium chromate alkali solution, after hydrothermal reaction, filtering and separating to obtain chromic oxide hydrate and alkali filter liquor; performing countercurrent washing on the chromic oxide hydrate and recycling the washing liquid; calcining the chromic oxide hydrate after washing in a high temperature furnace to obtain chromium oxide green; concentrating and performing alkali modulation on the alkali filter liquor and the washing liquid, and further returning the alkali filter liquor and the washing liquid after concentration and alkali modulation, so as to serve as the alkali solution to realize cyclic utilization of sodium resource in the technological process. Compared with the conventional preparation process of chromium oxide green, the method for producing chromium oxide green, provided by the invention, has the advantages that the production technical process is short, the operation is simple, and the prepared chromium oxide green is high in quality; besides, cyclic utilization of sodium resources in the production technology process is realized, and zero emission of the three wastes is also realized, so that the method is an environment-friendly and clean novel method for producing chromium oxide green.

The invention relates to a preparation method for zinc citrate. The preparation method comprises the following steps: (1) a salt forming reaction step: adding citric acid, zinc oxide, an initiator and water in a molar ratio of 1 to 15 to (0.5-0.6) to (0.02-0.05) into a reaction kettle to obtain a mixture, heating the mixture to 70-80 DEG C while stirring, reacting the mixture for 5-7 hours for releasing carbon dioxide, thereby obtaining zinc citrate; and (2) a drying step: centrifugally separating the zinc citrate obtained in the step (1) to obtain granular zinc citrate, putting the granular zinc citrate into a drying sieve to dry in a drying oven, and sieving the granular zinc citrate after drying the granular zinc citrate, thereby obtaining a finished product zinc citrate. According to the preparation method, citric acid is used to replace sodium citrate and zinc oxide is used to replace zinc sulfate; the obtained product is zinc citrate which is single, high in purity, granular and easy to dry after being separated, so that spontaneous combustion risks are relieved; and the obtained product does not need to crush, so that much dust is avoided.

The invention relates to a method for preparing zinc gluconate. The method comprises the following steps of (1) conducting a salt-forming reaction step, namely putting gluconic acid, zinc oxide, initiator and water into a reaction kettle, conducting stirring and a heating reaction to spill out carbon dioxide and generate zinc gluconate; and (2) conducting a drying step, namely drying the granular product which is obtained by separation in a drying screen which is ventilated from top to bottom, and screening the obtained product to obtain the zinc gluconate. According to the preparation method, in the material charging step, the gluconic acid is used to replace sodium gluconate, and zinc oxide is used to replace zinc sulfate, so that only zinc gluconate is obtained. The single granular product zinc gluconate has high purity, can be easily dried after being separated, so that the risk of spontaneous combustion is cleared, the prepared product is not needed to be ground, and massive dust can be avoided.

The invention relates to a preparation method of micro powder capecitabine, the method is as follows: adding a capecitabine crude product into ethyl acetate, dissolving by heating, cooling to a condition that capecitabine reaches a saturation state in the ethyl acetate, adding capecitabine seed crystal, and obtaining the micro powder capecitabine by thermal insulation crystallization, cooling, filtration and drying. The micro powder capecitabine prepared by the method is high in purity and uniform in particle size, does not generate static electricity, does not agglomerate, good in fluidity, easy for scale production, can well ensure the quality homogeneity of a preparation, and makes clinical medication safer.

The invention discloses a preparation method of chromium phosphate. The preparation method comprises the following steps of: (1), adding phosphoric acid, chromium oxide, an initiator and water to a reaction kettle, stirring and heating up, so that carbon dioxide is overflowed to generate chromium phosphate; (2), crystallizing and separating the chromium phosphate generated in the step (1) to obtain a granular product, and placing the product in a drying sieve which is ventilate from top to bottom for drying and sieving to obtain the product. According to the preparation method of the chromium phosphate, byproducts are not generated in the reaction, the generated chromium phosphate is high in purity and granular, the separated product is easy to dry, the use of drying equipment is reduced, the production cost is lowered, the obtained crystallized product is unnecessary to crush, and most dust is avoided. Besides, the preparation method of the chromium phosphate is convenient to operate, simple and easy to implement and capable of improving production efficiency, and conveniently realizes industrial production.

The invention provides a siliceous composite material, comprising silicon particles and a clad wrapped on the surface of silicon particles, wherein, the clad is conducting polymer. The siliceous composite material provided by the invention takes the conducting polymer as the clad; the polymer does not need to be transformed further into 'hard carbon', and the siliceous composite material is guaranteed to have excellent conductivity; meanwhile, the aggregation between silicon particles can be avoided. When the composite material is taken as negative active material of a lithium iron battery, the lithium iron battery is ensured to have high reversible capacity and good cycle performance. Therefore, the invention can be taken as the negative active material of the lithium iron battery. As the polymer does not need to be transformed further into the 'hard carbon' and the siliceous composite material has good conductivity in the preparation of the siliceous composite material provided by the invention, the manufacturing technique is simplified and the problem of huge energy consumption caused by the high temperature carbonization process in the prior art is solved.

The invention provides a siliceous composite material, comprising silicon particles, graphite particles and conducting polymer, wherein, the conducting polymer is wrapped on the surface of the graphite particles; at least part of the silicon particles is adhered to the surface of the conducting polymer. The siliceous composite material provided by the invention takes the conducting polymer as a clad material; the polymer does not need to be transformed further into 'hard carbon' and the siliceous composite material is guaranteed to have excellent conductivity; meanwhile, the aggregation between silicon particles can be avoided. When the composite material is taken as negative active material of a lithium iron battery, the lithium iron battery is guaranteed to have high reversible capacityand good cycle performance. Therefore, the invention can be used as the negative active material of the lithium iron battery. As the polymer does not need to be transformed further into the 'hard carbon' and the siliceous composite material has good conductivity in the preparation of the siliceous composite material provided by the invention, the manufacturing technique is simplified and the problem of huge energy consumption caused by the high temperature carbonization process in the prior art is solved.

The present invention relates to a kind of preparation method of chromium stearate, this method comprises the following steps: (1) salt-forming reaction step, stearic acid, chromium oxide, initiator, water are put into reactor, stir, heating reaction, make carbon dioxide overflow , to generate chromium stearate; (2) drying step, the granular product obtained by crystallization separation is dried in the upper and lower air-permeable drying sieves. The obtained product is sieved to obtain the product. The granular product obtained by the preparation method of the chromium stearate is easy to dry, reduces protection and equipment, saves equipment investment, and reduces operating costs.

The invention relates to a method for preparing chrome resorcin-ate. The method includes the following steps of 1, the salt forming reaction step, wherein resorcin acid, chromic oxide, initiators and water are put into a reaction kettle in the molar ratio of 1:15:0.65-0.825:0.2-0.5, the mixture is heated to 70 DEG C to 80 DEG C while stirring, reacting is carried out for 5 h to 7 h to enable carbon dioxide to overflow, and the chrome resorcin-ate is obtained; 2, the drying step, wherein the chrome resorcin-ate crystals obtained in the step 1 are centrifugally separated to obtain granular chrome resorcin-ate, the granular chrome resorcin-ate is placed into a drying sieve to be dried in a drying box, sieving is carried out after drying, and the finished chrome resorcin-ate is obtained. According to the method, during material putting, sodium resorcin-ate is replaced by the resorcin acid, chromium sulfate is replaced by the chromic oxide, and the obtained product is only the chrome resorcin-ate; the product is single, high in purity, granular and easy to dry after being separated, the obtained crystal product does not need to be smashed, and a large amount of dust is avoided.

The invention relates to a process and a device for continuously preparing powdery MES (fatty acid methyl ester sulfonate) particles. A process flow is simple, and the provided preparation device is simple in structure. According to the technical scheme, the process for continuously preparing the powdery MES particles comprises the following steps of (1) causing a powdery mixture of a neutralizer, a wrapper and a stabilizer and fatty acid methyl ester acid ester to enter a high-shear reactor according to a certain proportion; (2) forming MES particles, and causing the MES particles to enter a flash dryer; (3) keeping the obtained MES particles at certain granularity; (4) causing mixed airflow discharged from an outlet of the flash dryer to enter a cyclone separator for separation; (5) obtaining a finished product. The device for continuously preparing the powdery MES particles comprises the high-shear reactor, the flash dryer, the cyclone separator, a bag-type dust collector and an induced draft fan, which are sequentially communicated, wherein the high-shear reactor is provided with an acid ester inlet, a powder inlet, an air inlet and a material outlet communicated with the flash dryer respectively.

The invention discloses a method for producing chromium oxide green through sodium circulation. The method comprises the following steps: adding powdery chromite ores or ferrochromium powder into an alkali solution and introducing oxidation materials for reaction, and separating to obtain a sodium chromate alkali solution after full reaction; adding organic reducing substances into the sodium chromate alkali solution, after hydrothermal reaction, filtering and separating to obtain chromic oxide hydrate and alkali filter liquor; performing countercurrent washing on the chromic oxide hydrate and recycling the washing liquid; calcining the chromic oxide hydrate after washing in a high temperature furnace to obtain chromium oxide green; concentrating and performing alkali modulation on the alkali filter liquor and the washing liquid, and further returning the alkali filter liquor and the washing liquid after concentration and alkali modulation, so as to serve as the alkali solution to realize cyclic utilization of sodium resource in the technological process. Compared with the conventional preparation process of chromium oxide green, the method for producing chromium oxide green, provided by the invention, has the advantages that the production technical process is short, the operation is simple, and the prepared chromium oxide green is high in quality; besides, cyclic utilization of sodium resources in the production technology process is realized, and zero emission of the three wastes is also realized, so that the method is an environment-friendly and clean novel method for producing chromium oxide green.