锑Resources in various fields

The content of strontium in the earth's crust is 0.0001%, mainly in the form of elemental or stibnite, bismuth ore, bismuth and vermiculite. Currently, there are as many as 120 kinds of strontium-containing minerals. The enamel is firm and brittle, easy to smash, shiny, non-ductile and malleable.锑 has three allotropes of jaundice, ash, and black mites. Antimony metal silvery white, brittle, unique cold thermal expansion properties. The amorphous crucible is gray and can be obtained by electrolysis of antimony halide. There are two types of allotropes: yellow variants are stable only below minus 90 degrees Celsius; metal variants are stable forms of thorium. At 2070 ° C, helium vapor is a monoatomic molecule. Metallic antimony is not a highly reactive element, which only react with water to release hydrogen when red hot, air at room temperature will not be oxidized, but can be fluorine, chlorine, bromine compounds; with iodine and heating to other One hundred metal combinations. The hydrazine is readily soluble in hot nitric acid to form hydrated cerium oxide. It can react with hot sulfur to form barium sulfate.锑 reacts with oxygen at high temperature to form antimony trioxide, which is an amphoteric oxide, hardly soluble in water, but soluble in acid and alkali; and can react with concentrated nitric acid.

The application of niobium is mainly in the form of niobium compounds and niobium alloys:

First, bismuth alloy

锑 is used as a component of other alloys to increase its hardness and strength. It is mainly used for alloys with tin , lead and copper . It has high strength and is extremely wear-resistant. It is a good material for manufacturing bearings and gears. The alloy containing antimony and lead is corrosion resistant. It is the first choice for the production of battery plates, chemical pipes and cable sheaths. Materials; therefore, bismuth alloys are widely used in battery plates, printed movable characters, hard lead, household appliance alloys, submarine cable wrappers, semiconductor manufacturing semiconductors and thermoelectric devices, and lead-tin-bismuth alloys can be used as sheet metal stamping dies. Due to its wide range of uses, it is also known as “strategic metal”.

Niobium is a poor conductor of electricity and heat. It is not easily oxidized at room temperature and has corrosion resistance. Since 锑 will not be oxidized, after a certain hydrogenated hydrazine is infiltrated into a television screen, a fluorescent tube, an electron tube, a hot water bottle, etc., it can be dried for a long time without being darkened. Therefore, it obtained the title of "protective agent". Therefore, the main role of niobium in alloys is to increase hardness, often referred to as a hardener for metals or alloys. The nature of the crucible is hard. Adding an appropriate amount of crucible to the printed type can harden the alloy, reduce the shrinkage rate, and make the outline of the movable word clear and distinct. Based on this, it has the reputation of “metal hardener”. When a mixture of unequal ratios is added to the metal, the hardness of the metal increases and can be used to make arms.

High purity germanium is a doping element for semiconductor silicon and germanium . High-purity germanium and other metal complexes (such as silver tellurium, gallium germanium) are ideal materials for the production of semiconductors and electrothermal devices.

Second, bismuth compounds

Bismuth (antimony trioxide) is one of the main uses of antimony. Bismuth compounds are excellent white pigments and are commonly used in the ceramics, rubber, paint, glass, textile and chemical industries. White is an important raw material for enamel, paint white pigments and flame retardants. Cerium oxide also has good adhesion and the effect of covering the iron tire. The well can be white glazed, and the brushed ceramic is not brittle and impact resistant. Therefore, it has made a "contribution" in the enamel industry. Whitening is also a good fire-fighting fire-preventing material. It can be used as a fire-extinguishing agent to deflate fire at high temperatures, to extinguish fires, and to isolate the air from good fire-extinguishing effects when spewing white smoke. During the Second World War, the United States used more than 10,000 tons of cerium oxide to produce fire retardant for military equipment. The United States does not have the investment of white flowers, in the years of the smoke.锑 has indeed protected many military facilities for the United States and has alleviated many losses. Therefore, it has made great contributions to fire prevention in the United States. Because it is flame retardant and can increase the heat resistance of plastics, it is an ideal flame retardant for many plastics. It can also be used as a fire retardant coating for synthetic fibers, building materials, safety film, high-power circuit components, high-temperature insulation materials, automotive interiors, etc. The amount of whitening as a flame retardant is increasing year by year. Further, antimony white and antimony sulfide can be made with the rubber filler; Production of titanium white as a precipitating agent; adding a small amount of antimony white, it can be completely burned in gasoline, reduced exhaust pollution of the environment; further as the organic antimony white Synthetic catalyst.

Raw oysters (dithizone trisulfide) are used in the production of matches and smoke agents. Antimony trisulfide or pure stibnite can be used in the production of safe matches, ammunition, firecrackers and the rubber industry.

Antimony trichloride can be used in medicine, and bismuth gluconate is a highly effective and low toxicity drug for treating kala-azar.

Barium sulfide (bismuth pentoxide) is a red pigment of rubber, which is used in the rubber industry and in the manufacture of veterinary drugs.

The world's proven reserves of antimony ore are more than 4 million tons. China's reserves, production and exports account for an important position in the world. China currently has 111 places of production. Including mountains of Guizhou, Wuchuan, Danzhai, Tongren, Banpo; Sinko such as mercury mine in Hunan Lengshuijiang City, Hunan Province, tin mines, Banxi; Nandan County, Guangxi Zhuang Autonomous Region Dachang mine; Gansu Province Cliff Bay Yankuang, Xunyang mercury mine in Shaanxi Province. China’s reserves account for 42.9% of the world’s reserves and are among the few state-owned resources with pricing power.

Parturition Medicine

We have Oxytocin Injection and Cloprostenol Sodium Injection solve animals' parturition problems. Oxytocin Injection stimulates the uterus and strengthens the contraction of the uterine smooth muscle. Cloprostenol Sodium Injection subsides corpus luteum and stimulates uterine smooth muscle contraction and cervical relaxation.