5 results about "Iron disulfide" patented technology

The present application relates to the field of resource recovery, and discloses a method for efficiently recovering sulfur and zinc-silver from high-sulfur residues obtained in zinc hydrometallurgy. A large amount of high-sulfur residues are contained in second-stage underflow liquid obtained by performing oxygen pressure leaching. In the present application, a proper amount of iron sulfate is first added to serve as an inducing agent, iron disulfide in high-sulfur residues is converted into elemental sulfur, so as to increase the content of the elemental sulfur; in a flotation stage, reaction conditions are controlled and an inhibitor is added, so as to improve a recovery rate of sulfur, enable more metals such as lead-zinc to enter tailings, and provide a basis for further improvement of the purity of the sulfur; the tailings and hot filtered residues are mixed with filtrate to prepare a slurry, ammonia water is added to the slurry, a zinc-ammonia complex method is used to dissolve zinc-silver, then a silver mirror reaction is used to recover metallic silver, and finally a zinc-ammonia complex solution is used to absorb and capture carbon dioxide to prepare a basic zinc carbonate product. The present application is simple to operate, has good application prospects, and overcomes the problems of a low sulfur recovery rate in existing processes, an impact on sulfur purification caused by the lead-zinc entering concentrate, a low zinc-silver recovery rate and high recovery costs.

The present invention concerns a positive electrode active material powder comprising iron disulfide, a sulfur source, a carbon source and a lithium based argyrodite compound and having a ratio A / B, wherein 0.05 < A / B < 0.40, with A representing the crystallite size of the lithium based argyrodite compound and B representing the crystallite size of iron disulfide.

The invention discloses a manufacturing method for a primary lithium-based reserve battery and a battery module. The battery injection hole is connected to the injection pipe through the positive terminal and the electrolyte busbar, the injection pipe goes deep into the bottom and is connected to the electrolyte flow plate, the exhaust hole is connected to the inside of the battery through the positive terminal and the electrolyte busbar, and there is no electrolyte inside the battery. The method includes: using iron disulfide or manganese oxide, a conductive agent and aluminum foil to prepare a positive electrode sheet, and using copper foil or nickel sheet, and metal lithium to prepare a negative electrode sheet; connecting the battery injection hole to the injection main pipeline, setting an injection flowmeter, an injection control valve and an injection pump, and connecting the injection pump to the electrolyte storage tank; the battery exhaust hole is connected to the main exhaust pipeline through an exhaust branch pipeline, and a gas-liquid separator and an exhaust control valve are set, and the exhaust control valve is connected to a vacuum pump through an exhaust pipeline; when in use, the vacuum pump is started to establish a vacuum negative pressure environment; opening the injection control valve, injecting electrolyte into the battery, and establishing the working voltage of the battery or module.

The invention relates to an abrasive article and a method of forming. An abrasive article may include a body including an abrasive portion. The abrasive portion may include abrasive particles and a filler contained in a binder material. The filler may include iron disulfide and potassium aluminum fluoride in a volume content ratio greater than 0.53 and less than 0.71.

The subject application relates to abrasive articles and methods of forming. An abrasive article can include a body including an abrasive portion. The abrasive portion can include abrasive particles and filler contained in a bond material. The filler may include iron disulfide and potassium aluminum fluoride in a volume content ratio of greater than 0.53 and less than 0.71.