In humidair at room temperature its surface form a dense oxide film, can prevent thebase metal to continue to oxidize. The hydrochloric acid, sulfuric acid, anorganic acid and an alkaline etching solution of zinc bugle head self drilling screw nickel is slow. Nickel slowlydissolved in dilute nitric acid, strong nitric acid can passivate nickelsurface and make it with corrosion resistant. Nickel is similar with theplatinum and palladium, can absorb large amounts of hydrogen, the smaller theparticle size, the greater amount of absorption. Nickel salts are nickel sulfateand nickel chloride.Nickel belong to the siderophile elements, thereare almost 60 kinds of nickel mineral in nature, and about 10 kinds of mineralswith industrial value: pentlandite, purple sulfur nickel ore, needle nickelore, pyroxene nickel ore, nickel-containing pyrrhotite square-sulfur nickel oreniccolite niccolite hui niccolite, nickel serpentine, nickel chlorite, greenkaolinite, green nickel ore, nickel, magnetite, nickel alum, morenositezaratite.Nickel sulfide ore deposits in vulcanizationrate, that was nickel sulfide state ratio of nickel ore is divided into:primary ore, mixed ore, oxide ore. Nickel sulfide ores can be divided intothree grades: special-rich ore, rich ore, lean ore nickel content.
Need richores and depleted ore through mineral separation to get nickel concentrate andthen smelting again especially rich ore can directly into the furnace smelting.Nickel powder is a very important metal raw material, Nickel's main purpose is tomanufacture stainless steel, high nickel alloy steel and alloy structural steelis widely used in aircraft, radar, missiles, tanks, ships, spacecraft, atomicreactors and other military manufacturing industry structural steel withnickel; in civilian industry, a large number of acid-resistant steel,heat-resistant steel made of nickel widely used in various machinerymanufacturing industry, the oil industry; nickel with chromium, copper,aluminum, cobalt and other elements can be composed of non-ferrous alloys,nickel based alloys, nickel-chromium-based alloy is high temperature oxidationresistant material used in the manufacture of jet turbine, resistance heatingelement, high temperature equipment and structural components; the nickel also forceramic pigments and anticorrosive coating; nickel-cobalt alloy is a permanentmaterials are widely used in electronic remote control, the atomic energyindustry, and ultrasound technology and other fields, nickel is often used as ahydrogenation catalyst in the chemical industry.According to the research of metalpowder supplier, Chinese nickel ore resources is rich, the provennickel mine is located in Chinese 18 provinces, autonomous regions. From thedistribution area, mainly in the northwest, southwest and northeast regions.
The characteristic of nickel resources inChina: (1) Reserves highly concentrated, just Gansu Jinchuan nickel mine isalready accounted for 63.9% of the country's total reserves, XinjiangKalatongke and Huangshan those three copper-nickel ores reserves also accountedfor 12.2% of the country's total reserves to maintain. (2) mainly coppersulfide nickel ore, accounting for 86% of the country's total reserves tomaintain, followed by nickel laterite, accounting for 9.6% of the country'stotal reserves to maintain. (3) high-grade nickel ore, the average nickelcontent is greater than 1% nickel sulfide-rich ore accounted for about 44.1% ofthe country's total reserves to maintain. (4) the degree of geological work of nickelore is relatively high, the exploration level reserves accounted for 74% of thecountry's total reserves. (5) a larger proportion of nickel ore undergroundmining, accounting for 68% of the country's total reserves to maintain andsuitable for open-pit mining accounts for only 13%. Compared to other countrieswhich have rich and high grade ore, such as New Caledonia,Indonesia,Chinese oxidized nickel ore is relatively small, and the grade of nickel oxideore is relatively low and uncompetitive