Related Knowledge About Nickle
As early as 235 BC, China has already began to use nickel minerals manufacturing coins
, including 78% copper and about 20% nickel. In Europe, similar mineral found in 1094, but without the recovery of nickel from mineral, so called it "red nickel", also known as the "copper devil". Nickel is widely used in contain precious metal currency alloy, also application in the process of electroplating technology manufacturing anticorrosive layer. The main body of the nickel minerals is red nickel ore, millerite, pentlandite all contain arsenic, iron and sulfur, of course, in the rock oar pyrrhotite there have pentlandite. Other ore use in mining nickel general contains Co, Cu, Fe, Mg and other impurity. Nickel is usually the main refining in the process, but in the production of other metal process it recycled as a by-product form. The worlds big mining nickel country have Russia, Canada, Australia, Cuba, new caledonia and Indonesia, etc.
Nickel is a yellowy and silvery white metal, is one kind of metal has the magnetic transition. In the air it is black, qualitative hard, corrosion resistant ability, heat resistance, the plasticity and toughness, and the temperature lower than 340 is magnetic. The characteristics of the nickel is the chemical activity, have a good stability in the air, water, alkali and all kinds of acid, mainly can form corrosion resistant surface oxidation film produce passivation. Only nickel powder can be burnned, form two oxide of NiO and Ni2O3 and corresponding two hydroxide of Ni (OH) 2 and Ni (OH) 3. Nickels main soluble salt include: acetic acid nickel, nickel chloride, nickel nitrate and nickel sulfate. Nickel salt solution usually appears as green, and anhydrous nickel salt generally appears as yellow or brown color. Insoluble nickel salt including oxalic acid nickel and nickel phosphate, and three kinds of nickel sulfide - NiS, Ni2S3 and Ni3S4. Nickel also can form a large number of valence compounds and complex, for example, demethylation oxalyl nickel Ni (HC4H6N2O2) 2, this kind of nickel salt in acid medium show as bright red, which are widely used in qualitative analysis of nickel detection field.
According to the information provided by metal powder supplier, as we all know pure nickel production is a multiple process of complex process, sulfide ore by primary mineral out nickel concentrate, and then to complete the process: sintering - melting output matte - converter blowing matte output nickel high matte - high matte grinding floating separate nickel and copper - using different methods to deal with high matte output metal nickel. From the ore to pure metal nickel overall can't recovery more than 70-75%.
Nickel is not only the basis material of manufacturing nickel alloy, but also an alloy element of other alloy. At present, nickel and its alloy used for special purpose parts, instrument manufacturing, machinery manufacturing, rocket technology and equipment, the atomic reactor, for the production of alkaline storage batteries, porous filter, catalyst, and the components and work piece of anticorrosive electric plating, nickel is considered as important strategic material in the national economic construction, the resources effective development and comprehensive utilization has been pay attention to all countries.
The application of nickel is determined by nickel corrosion resistant performance, adding nickel to alloy can enhance the corrosion resistance of nickle. Stainless steel and alloy production field is the largest nickel application fields. Alloy containing nickel purposes: monel high strength and corrosion resistance of nickel and copper ferromanganese alloy have widely application in chemical equipment, shipbuilding field, also used in the manufacture of settling basin and cover, etc. Nichrome nickel-chromium alloy and chromel chrome nickel alloy with wire form used in transformer, oven, electric iron, heater, etc. Because the tile iron nickel alloy expansion coefficient is very low, can be used in the manufacture of clock and measuring tape of the pendulum; Because permalloy have excellent susceptibility, so the Marine cable and power delivery process application; Argentan used in the manufacture of furniture; Al, KeTie nickel aluminum cobalt alloy is a kind of strong magnetic materials, used in the manufacture of have permanent magnet performance fine tool. Nickel coating have long used for decoration, used to protect many kinds of alkali metal corrosion.
At present, the world nickel consumption is second only to copper, aluminum, lead, zinc and fifth in non-ferrous metal. China will be a great development potential of the nickel and stainless steel consumption market, nickel industry development contains huge potential.
Source:http://www.mhcmp.com
by: anelwew
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