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

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 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 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.