Discover a small history
Ancient Egyptian, Chinese and Babylonians had a nickel containing high amounts of iron meteorite production of artifacts. Yunnan white copper produced high nickel content, referred to as European "Bank of China." 1751 Swedish mineralogist Cronstadt (AFCronsteclt) Take the nickel metal separating methods. Metal nickel has been used extensively for social and economic development and has a history of more than 100 years.
The nature of nickel
Nickel has good mechanical strength and ductility, is refractory, and does not oxidize in air. A dense oxide film is formed on the surface of the humid air at room temperature to prevent the bulk metal from continuing to oxidize. Hydrochloric acid, sulfuric acid, organic acids and alkaline solutions etch nickel very slowly. Nickel slowly dissolves in dilute nitric acid. Strong nitric acid can passivate the nickel surface and is corrosion resistant. Nickel, like platinum and palladium , can absorb a large amount of hydrogen during passivation. The smaller the particle size, the larger the absorption. The important salts of nickel are nickel sulfate and nickel chloride.
Nickel resources
There are many kinds of minerals in nature, and there are more than 10 kinds of main minerals with industrial value: nickel pyrite, purple sulfur nickel (iron) ore, needle nickel ore, Hui (iron) nickel ore, nickel-containing pyrrhotite, square. Sulfur nickel ore, red arsenic nickel ore, arsenic nickel ore, arsenic nickel ore, dark nickel serpentine, nickel chlorite, green kaolinite, green nickel ore, nickel magnetite, nickel bismuth, tourmaline, green Nickel ore.
Preparation of nickel
The preparation methods of nickel mainly include nickel sulfide nickel smelting and nickel oxide smelting nickel.
Use of nickel
Nickel is a very important non-ferrous metal raw material. The main use of nickel is in the manufacture of stainless steel, high-nickel alloy steel and alloy structural steel. It is widely used in various military manufacturing industries such as aircraft, radar, missiles, tanks, ships, spacecraft, and atomic reactors. In civil industry, nickel is often used. Made of structural steel, acid-resistant steel, heat-resistant steel, etc., used in various machinery manufacturing and petroleum ; nickel and chromium , copper, aluminum , cobalt and other elements can form non-ferrous alloys. Nickel-based alloys and nickel-chromium-based alloys are high temperature resistant and oxidation resistant materials used in the manufacture of jet turbines, resistors, electric heating elements, high temperature equipment structural parts, etc. Nickel can also be used as ceramic pigments and anticorrosive coatings; nickel-cobalt alloys are a kind of eternal Magnetic materials are widely used in the fields of electronic remote control, atomic energy industry and ultrasonic technology. In the chemical industry, nickel is often used as a hydrogenation catalyst. In recent years, the use of nickel in color television sets, tape recorders and other communication equipment is also rapidly increasing.
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