3results about How to "Workmanship is feasible" patented technology

The invention discloses a preparation method of a sodium ion battery biomass hard carbon negative electrode material with a high micropore structure. The preparation method comprises the following steps: S1, pretreating raw materials to obtain refined hard carbon raw materials; s2, functional group modification: placing the hard carbon raw material and a modifier in a reaction kettle for temperature control reaction to obtain a modified hard carbon raw material rich in functional groups; s3, cross-linking modification: putting the modified hard carbon raw material and a cross-linking agent into a reaction kettle, and reacting at a controlled temperature to obtain a cross-linked hard carbon raw material; s4, drying treatment: drying the cross-linked hard carbon raw material to obtain a cross-linked hard carbon raw material; s5, pre-carbonization: pre-carbonizing the cross-linked hard carbon raw material in a protective atmosphere to obtain a pre-carbonized material; s6, crushing and refining to obtain a refined pre-carbonized material; and S7, high-temperature carbonization: carrying out high-temperature carbonization on the refined pre-carbonized material in a protective atmosphere to obtain the hard carbon negative electrode material with a high microporous structure. The method has the characteristics of high sodium storage capacity, high coulombic efficiency and high process operability.

The invention relates to a method for producing food-grade zinc sulfate by using zinc hypoxide, which comprises the following steps: (1) leaching: sequentially adding zinc hypoxide and sulfuric acid into a leaching tank filled with pure water for leaching, and filtering to obtain a crude zinc sulfate solution; (2) silver salt dechlorination and silver sulfate regeneration: reagent-grade silver sulfate is added into the crude zinc sulfate solution at a time for a reaction, and silver chloride sediment and dechlorinated liquid are obtained; the silver chloride precipitate is used for preparing regenerated silver sulfate; (3) co-precipitating to remove heavy metal impurities: adding an H2O2 solution and basic zinc carbonate into the dechlorinated filtrate, and reacting to obtain a precipitated solution; (4) replacing to remove copper, cadmium and lead: adding zinc powder into the precipitated liquid to carry out replacement reaction to obtain a high-purity zinc sulfate solution; and (5) concentrating and crystallizing to produce food-grade zinc sulfate, namely adjusting the pH value of the high-purity zinc sulfate solution, and performing vacuum evaporation concentration, cooling crystallization, liquid-solid separation and drying to obtain a terminal product, namely the food-grade zinc sulfate. The method is feasible in process, high in operability, low in cost and high in metal recovery rate.

This invention belongs to the field of oral mouthwash technology, specifically relating to an oral mouthwash for the prevention and treatment of oral ulcers and a method for preparing it. This invention uses self-prepared garlic extract, millet extract, and lemon extract as active ingredients, which are mixed in specific amounts. The synergistic effect of these active ingredients not only benefits qi, reduces inflammation and pain, and promotes healing, but also deodorizes, sterilizes, and freshens breath. Furthermore, this invention adds carbomer, glycerin, benzyl alcohol, citric acid, sodium hydroxide, sodium saccharin, sodium pyrophosphate, chitosan, polyvinyl alcohol, and menthol, which facilitates the rapid adhesion of the active ingredients to the treatment site and ensures rapid efficacy. Therefore, the technical solution of this invention is not only simple to prepare and fast-acting, but also highly effective in preventing and treating oral ulcers and freshening breath.