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    Home > What is nickel smelting?

    What is nickel smelting?

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Nickel smelting is a process of removing impurities of nickel ore and leaving only nickel metal Although the ore comes from different places, it can be divided into two types: nickel bearing laterite or rock in tropical climate and sulfide ore from underground Depending on the ore type and smelter preference, the ore must go through multiple processing processes to become nickel Some nickel smelting processes produce slag, but some are cleaner The first step in nickel smelting is to obtain ore Red earth ores can be found in tropical climates, where nickel is deposited beneath the weathered ore surface This kind of ore has a high water content and contains other metals such as iron Sulfide ore is mined from underground with low water content, and may contain many different metals in the same ore No matter which ore is chosen, the smelter can extract nickel The next step is to heat the nickel ore in an electric furnace and melt it The melting point of nickel is 1453 ℃, so a strong electric furnace must be used In most cases, nickel smelting takes place in flash smelting, which makes electricity and oxygen rapidly mix to the required high temperature Nickel ore must be melted into a liquid substance, usually composed of about 45% nickel and 55% slag or other metals Slag will be removed because it cannot be further refined but can be sold to other industries The next process of nickel smelting is refining liquid substances, which is usually completed by one of two processes In the fluidized bed roasting, sulfides are added to the liquid to bake together, leaving only nickel metal Another process is the reduction of hydrogen chloride, keeping the temperature of the liquid at 950 ° C until it reacts hot and converts the liquid to nickel After nickel smelting, nickel is cooled and used in different processes Nickel is often used as an alloying agent for steel and other metals because of its corrosion resistance and high polishing properties It is also sold to other industries to produce a wide range of products, such as hydrogenated vegetable oil, batteries and magnets.
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