2results about How to "Pure" patented technology

The invention provides an efficient synthesis method of biomass calcium formate. Biological calcium carbonate is ground into powder, the powder and formic acid are subjected to a chemical reaction, under the action of organic matter, generation of a large amount of regular orthogonal-beta calcium formate is induced, the crystal form is P41212, and the yield of calcium formate is greatly increased. The method for synthesizing calcium formate provided by the invention has the advantages of simple and easily available raw materials, low production cost, high synthesis yield, catalyst induction of the raw materials and the like, the synthesis process is efficient and environment-friendly, no pollutant is generated, and the economic profit and sustainability of the process are further improved. The synthesis process does not pollute the environment, a by-product carbon dioxide is generated in the reaction process, and the carbon dioxide can be reused. The generated calcium formate is of a very regular octahedral structure, and has important reference significance for efficiently synthesizing the calcium formate in industry.

The application relates to a preparation method of a nano WC-Co-based composite powder with inhibitor uniform distribution, and belongs to the technical field of powder preparation. In the application, tungsten oxide and cobalt oxide with large brittleness are used as raw materials, the raw materials are easily broken in a ball milling process, the superfine and nano particle size of a precursor mixed powder containing an inhibitor and the uniform distribution of the raw materials are ensured, the precursor of the inhibitor is dissolved in anhydrous ethanol, a solution is formed, and the solution is mixed with other raw materials, so that the uniform distribution of the component of the inhibitor element in the precursor mixed powder containing the inhibitor is ensured. Polyethylene glycol is added in the ball milling process, the agglomeration of powder particles is reduced, the friction between the powder particles is reduced, and the flowability of the particles is increased. Through the matching of precursor components, the density of the mixed powder of the inhibitor-containing compact and a stage-by-stage heating process, the full reaction of the compact is ensured, the rapid discharge of generated gas is ensured, and through the further ball milling treatment of the prepared powder, the powder is ensured to have the characteristics of pure phase, small WC particle size and uniform component distribution.