44 results about "Fluorosilicate salt" patented technology

The present invention discloses an organofluorosilicate glass film comprising organic and inorganic matter and not including appreciable amounts of fluorocarbons. A preferred thin film is represented by the formula: Si v o w C x h y f z , where v+w+x+y+z=100%, v from 10-35 atomic%, w from 10-65 atomic%, y from 10-50 atomic%, x from 1-30 atomic%, z from 0.1-15 at%, x / z optionally greater than 0.25, wherein substantially no fluorine is attached to carbon. In addition, the present invention also provides a CVD method, comprising: (a) providing a substrate in a vacuum chamber; (b) introducing a gas-phase reactant into the vacuum chamber, the reactant comprising fluorine-supplying gas, oxygen-supplying gas, and at least a precursor gas selected from organosilanes and organosiloxanes; and (c) applying energy to gas phase reactants in the chamber to cause the gas phase reactants to react and form a film on the substrate.

The invention discloses a refining agent for aluminum alloys containing a high proportion of returned charge and a method for using the same. The refining agent includes general components and functional components, and the general components include chloride metal salts, fluorine metal salts, and fluoroaluminate Or one or two of fluorosilicates; functional components include the following components: niobium alloy, copper alloy, metal zinc, rare earth. After the refining agent of the present invention is added to the aluminum alloy melt containing a high proportion of recycled materials, it can fully diffuse from bottom to top without adsorption and agglomeration, quickly exerts the refining effect, and obtains a high-purity aluminum alloy melt. When it is used to refine aluminum alloy melt containing a high proportion of returned materials, the hydrogen content of the aluminum melt can be reduced to a level not exceeding 0.10ml / 100g Al, and the total oxygen content of the aluminum melt can be reduced to 80ppm. In addition to its excellent degassing and impurity removal effects, the refining agent can also significantly reduce the number and size of β‑Al5FeSi phase in the casting structure, eliminate the harmful effect of impurity iron in aluminum alloys, and thus improve the mechanical properties of cast aluminum alloy castings performance and yield.

The invention discloses an early-strength polycarboxylate water reducer as well as its preparation method and application. Early-strength polycarboxylate superplasticizer includes the following components: polycarboxylate high-efficiency water-reducer mother liquor, early-strength components, defoamers, accelerators, fluorosilicates; the early-strength components include organic early-strength components The strong component and the inorganic early-strength component, the mass ratio of the organic early-strength component and the inorganic early-strength component is 1: (0.8-1.2); the polycarboxylate high-efficiency water reducer mother liquor includes the following raw materials in parts by weight: 20-45 parts of methoxypolyethylene glycol, 15-20 parts of 1,2,4,5-pyrellitic anhydride, 5-14 parts of sodium methacrylate sulfonate, 15-20 parts of p-toluenesulfonic acid, 35 ‑40 parts of ionized water, 1‑5 parts of polymerization inhibitor, 2.5‑5 parts of initiator, 1‑3 parts of pH regulator. The early-strength polycarboxylate water-reducer of the invention has the advantages of being able to increase the early strength of concrete without affecting the later strength of concrete and improving the frost resistance of concrete.

It relates to a method and equipment for purifying calcium fluoride from decarbonated fluorine-containing solid waste. The method is to perform selective acid leaching on the fluorine-containing solid waste from which carbonate has been removed, and use hydrofluoric acid solution to remove di Silicon oxide; after acid-solid-liquid separation, the separated silicon-containing fluorine-containing solid waste and silicon-containing fluoric acid waste acid liquid are obtained; the silicon-containing fluorine-containing solid waste is rinsed in the first cycle and dried to obtain the finished product of calcium fluoride; recycling Regenerate the silicofluoric acid in the waste acid solution containing silicofluoric acid, take the solid and dry to obtain the fluorosilicate solid and separate the recovered acid for mixing with the acid leaching solution of selective acid leaching; when the leaching in the first cycle rinsing If the acidity of the solution exceeds the lower pH threshold, it is exported and used for second precipitation and solid-liquid separation using calcium salts to obtain separated calcium fluoride and calcium chloride. The invention can individually purify calcium fluoride, calcium chloride and fluorosilicate solids from fluorine-containing solid waste with high efficiency, use hydrofluoric acid with high efficiency, and realize the discharge of zero waste acid waste water.