74 results about "Strontium hydroxide" patented technology

The invention relates to a phase transition temperature adjusting cup, which comprises a cup body outer casing, a cup body inner casing and a top cover, and the composite phase transition material is filled between the inner casing and the outer casing. The composite phase transition material comprises phase transition material, a nucleating agent, heat conduction filling material and a thickening agent. The phase transition material is selected from one or more of sodium acetate trihydrate, sodium thiosulfate pentahydrate, twelve disodium hydrogen phosphate, sodium sulfate decahydrate and decahydrate. <{EN4}>The nucleating agent is selected from one or more of borax, sodium phosphate dibasic anhydrous, diatomaceous earth, silica, sodium silicate, eight water strontium hydroxide, hexahydrate chloride strontium. <{EN5}>The heat conduction filling material is selected from one or more of graphite, carbon nanotube, expanded graphite, carbon fiber, graphene, three-dimensional graphite foam, silicon carbide, copper powder. <{EN6}>The thickening agent is selected from one of polyacrylic acid emulsion or carboxymethylcellulose sodium. <{EN7}>Compared with existing temperature adjusting cups, the phase transition temperature adjusting cup of the present invention has the advantages of rapid cooling, simple structure convenient operation, 3-4 hours of comfort temperature zone, and not being restricted from external environment.

The invention discloses a method for preparing high-purity strontium dihydroxide by utilizing strontium slag. The method comprises the steps: (1) grinding the strontium slag; (2) dissolving the ground strontium slag and adding mixed solution of sulfuric acid and hydrochloric acid, and performing filtration to obtain liquid first solution; (3) adding sodium hydroxide solution into the first solution, performing filtering separation of sediment after the heating, and obtaining liquid second solution; (4) adding solid strontium dihydroxide into the second solution, performing heating to 40-70 DEG C and then maintaining constant temperature for 0.5-2 h, performing filtering separation of sediment, and obtaining strontium chloride solution; (5) using deionized water to dilute the strontium chloride solution and then adding sodium hydroxide solution to perform alkali decomposition, and filtering the precipitated crystal to obtain coarse strontium hydroxide crystal; (6) recrystalizing the coarse strontium hydroxide crystal, and obtaining high-purity strontium dihydroxide crystal. According to the method, tailing resources are utilized, the strontium ore utilization rate is improved, and the environmental pollution caused by tailings is reduced.