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Method for preparing zirconium silicide nanomaterials

Zirconium silicide (zrsi), as a zirconium-silicon intermetallic compound, is a kind of high temperature ceramic material with high hardness, high melting point, high conductivity, high thermal conductivity and excellent thermal shock resistance. In view of these superior physical and chemical properties of zirconium-silicon intermetallic compounds, it is a kind of structural materials or new engineering materials that can be applied to high temperature corrosive media. At present, The method of preparation of zirconium silicide is mainly with silicon thermal reduction [...]

Nano titanium diboride reinforced aluminum alloy composites

Nano-titanium diboride particle reinforced aluminum matrix composites, TiB2p/Al has excellent mechanical and physical properties, such as high specific strength and specific modulus, wear resistance, fatigue resistance, low density, good dimensional stability, etc. Moreover, compared with continuous fiber reinforced composite materials, it has a significant low-cost advantage. The materials are isotropic, easy to process, flexible and diverse preparation, and can be manufactured by traditional equipment for secondary processing, such as extrusion, calendering and forging. Nano-titanium diboride particle reinforced aluminum matrix composite [...]

Cesium fluoaluminate flux moisture meter use method

Cesium fluoaluminate flux moisture meter, also known as cesium fluoaluminate flux moisture meter. Its working principle is oven drying weight reduction method, by heating the sample moisture evaporation, and then calculate the sample weight difference before and after heating and the weight percentage of the sample before heating, that is, to obtain the water content of cesium fluoaluminate flux. The halogen moisture meter designed according to oven heating constant weight method meets the verification requirements of JJG 658 drying [...]

Tungsten trioxide blue tungsten oxide production

Ammonium paratungstate is heated in a rotary furnace with wet dust collection, the vaporized crystal water is discharged first, and then a large amount of combined ammonia is lost, and finally tungsten trioxide (industrial) is formed. Blue tungsten oxide has the characteristics of good activity, larger than surface, easy doping and maintaining the original crystal shape. Therefore, both at home and abroad have attached great importance to the production of blue tungsten oxide. According to the characteristics of ammonia pyrolysis [...]

Method for preparing nanometer magnesium carbonate crystals

The invention relates to a method for preparing nanometer magnesium carbonate crystals, which can prepare nanometer magnesium carbonate crystals with high speed and high purity. To realize the above purpose, the technical scheme of the invention is to design a method for preparing nanometer magnesium carbonate crystals, including the following steps: 1) Prepare MgCl2 solution with concentration of 3.2mol/l, and add 1.2g/l block polyoxyethylene polyoxyethylene ether, 1.5g/l glycol monostearate and 2.2g/l hydroxypropyl methyl cellulose were mixed slowly and evenly to obtain solution [...]

Production method of stannous pyrophosphate

Stannous pyrophosphate, chemical formula Sn2P2O7, molecular weight 411.32, amorphous powder. It is prepared by heating tin (Ⅱ) diphosphate at 350 ~ 400℃. Production method of stannous pyrophosphate: In the double decomposition method, stannous chloride and sodium pyrophosphate were dissolved in water, and an appropriate amount of activated carbon was added for decolorization and filtration to obtain a clean solution. Then add water to each solution and adjust to a certain concentration. Sodium pyrophosphate solution was first added to the reactor, and [...]

Zinc stannate a flame retardant and smoke suppressor replaces antimony trioxide

Flame retardants and halogen sources act on both flame and smoke in a variety of important polymer systems. Health, safety and the environment are important factors in today’s world, and zinc stannate products have no negative impact in these areas. Zinc stannate is an anhydrous product with excellent thermal stability even at 400 degrees and is recommended for use in polyamide systems. The molecular structure of zinc stannate contains tin and zinc; Both elements have special functions that allow [...]

Ruthenium trichloride was prepared from ruthenium containing waste

Preparation of Ruthenium trichloride directly from ruthenium-containing waste material Ruthenium trichloride is one of the most important compounds of ruthenium and is an important chemical raw material in the fields of heterogeneous catalysis, homogeneous catalysis, electroplating, coating and so on. A method of preparing ruthenium trichloride directly from ruthenium waste material was introduced. The process is simple, the cost is low, the operation is simple, and the direct yield of ruthenium is more than 90%. Ruthenium waste generally comes from [...]

Recovery of potassium fluosilicate in the production of potassium fluotitanate

This technology provides a kind of fluorine in the production of potassium titanate recycling process of potassium fluosilicate, fluorine is obtained by hydrofluoric acid will react with titanium ore leaching of iron titanate slurry, solid-liquid separation are clarified the fluorine titanium acid leaching liquid iron, then add the potassium liquid cooling crystallization, solid-liquid separation of potassium fluosilicate solid and refined fluorine titanium acid leaching of iron liquid; Will be refined fluorine iron leaching liquid and potassium titanate liquid reaction [...]

A method for preparing rhenium trichloride

Rhenium itself has no independent deposit, and is often dispersed in other non-ferrous ore bodies. It is mainly associated with molybdenite and mostly occurs in trace minerals such as molybdenum, copper, lead, zinc, platinum and niobium. Therefore, we should make full use of regional resources, give full play to regional advantages, and vigorously build the high-tech industry of scattered metals. A former Soviet union carbide plant, oxidizing roasting – sedimentation method to extract the rhenium: flue gas containing a Re2O7 [...]