5results about How to "Composition is stable" patented technology

This invention relates to the field of mineral processing technology, and discloses a copper sulfide ore beneficiation reagent, its preparation method, and its application. The reagent is composed of 50-55 parts by weight of sodium dibutyl monothiophosphate, 20-25 parts by weight of sodium isobutyl xanthate, 10-15 parts by weight of modified mercaptothiocyanate, and 5-10 parts by weight of fusel oil. The modified mercaptothiocyanate is obtained by chemically modifying the molecular structure of conventional mercaptothiocyanates by introducing hydrophobic alkyl groups and / or sulfur-containing functional groups. The fusel oil is a mixture of C4-C8 fatty alcohols. The preparation method includes: weighing the raw materials; mixing and dissolving sodium dibutyl monothiophosphate and sodium isobutyl xanthate to obtain a mixed solution; adding the modified mercaptothiocyanate and stirring to obtain a reaction solution; adding the fusel oil, stirring, separating the liquid to obtain an oily liquid, and filtering to obtain the reagent. The mass ratio of the oily liquid to the mixed solution after separation is (20-80):(80-20), and the filtration time is 30-60 min. The reagent of this invention can be used in the flotation of copper sulfide ore, with a dosage of 60-120 g / t.

This utility model relates to the field of combustible gas mixing and distribution technology, and discloses an explosion-proof combustible gas mixing and distribution device, including a base plate. A compressed air storage tank, a combustible gas cylinder, and a pressure buffer tank are respectively arranged on the top of the base plate. The output ends of the compressed air storage tank and the combustible gas cylinder are respectively connected to a first exhaust pipe and a second exhaust pipe by bolts. The outer surface of the first exhaust pipe is respectively fixedly connected to a first pressure reducing valve, a first mass flow controller, and a first one-way valve. This device adopts a spiral structure mixing pipe, so that the compressed air and combustible gas form a spiral flow path in the pipe, prolonging the gas contact time. In conjunction with the process of compressed air and combustible gas being depressurized by the pressure reducing valve and precisely controlled by the mass flow controller, they enter the mixing pipe in an orderly manner through the one-way valve, effectively improving the mixing uniformity and solving the problems of low mixing efficiency and uneven concentration caused by the simple straight-through structure of existing devices.

The present application belongs to the technical field of wet-process phosphoric acid and resource comprehensive utilization, and discloses a method for preparing phosphoric acid and calcium chloride by decomposing medium and low grade phosphate rock with by-product hydrochloric acid. (1) The phosphate rock is mixed with a hydrochloric acid solution, sodium chloride is added, and after reaction, solid-liquid separation is performed to obtain an acidolysis solution; (2) the acidolysis solution is separated and treated to obtain a phosphoric acid solution and a calcium chloride solution; (3) the calcium chloride solution is neutralized and purified by using a stepwise pH value control method; (4) the purified calcium chloride solution is concentrated, sodium chloride is precipitated and separated due to solubility difference, and is returned to step (1) for recycling, and the concentration, crystallization and drying are continuously performed to obtain a calcium chloride product. The present application effectively solves the problems of difficult solid-liquid separation and low value of by-product calcium chloride caused by the generation of silica gel in the acidolysis process of medium and low grade phosphate rock, the decomposition rate of the phosphate rock is more than 98%, high quality phosphoric acid is obtained, the full utilization of by-products is realized, and the production cost and energy consumption are significantly reduced.

This invention discloses a special electrolyte additive, an electrolyte, and a lithium-ion battery. The trimethylsiloxysilane compound and fluorosulfonic anhydride compound of this invention have low LUMO and high HOMO values, respectively, and can preferentially undergo redox reactions in the solvent. This allows them to form a more stable CEI film and SEI film on the positive and negative electrode surfaces, respectively, which can effectively slow down the dissolution of metal ions from the positive electrode and inhibit their reduction deposition on the negative electrode. At the same time, the fluorosulfonic anhydride compound, together with the trimethylsiloxysilane compound, participates in the formation of the SEI film, further improving the mechanical strength of the SEI film, thereby alleviating the side reactions between the electrode and the electrolyte and improving the cycle stability of the battery.