what chemicals are used in conventional roasting in mining nickel

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nickel - wikipedia

nickel is obtained through extractive metallurgy: it is extracted from the ore by conventional roasting and reduction processes that yield a metal of greater than 75% purity. in many stainless steel applications 75% pure nickel can be used without further purification depending on the impurities.

nickel: smelting producing-metalpedia

nickel is recovered through extractive metallurgy: it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity. in many stainless steel applications 75% pure nickel can be used without further purification depending on the composition of the impurities.

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roasting (metallurgy) - wikipedia

roasting is a process of heating of sulfide ore to a high temperature in presence of air. it is a step of the processing of certain ores. more specifically roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component(s).

nickel processing britannica.com

nickel processing preparation of the metal for use in various products. although it is best known for its use in coinage nickel (ni) has become much more important for its many industrial applications which owe their importance to a unique combination of properties. nickel has a relatively high

how to green your life - cnet

want to green your life in honor of earth day on tuesday good luck. there's seemingly no limit to the potential catch-22s of trying to do the right thing by the environment. for example could so

nickel mining and processing: everything you need to know

one of the many benefits of this progress is the reduction of waste and dangerous chemicals. although nickel is documented being used as far back as 3500 bc by syrians who used a small amount and in 235 bc by the chinese who minted coins from nickel nickel mining itself is relatively new compared to other mined materials. dating back to 17th

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roasting metallurgy britannica

the most important operations are roasting smelting and refining. roasting or heating in air without fusion transforms sulfide ores into oxides the sulfur escaping as sulfur dioxide a gas. smelting (q.v.) is the process used in blast furnaces to reduce iron ores. tin copper and lead ores are also smelted.

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what chemicals are used in conventional roasting in mining nickel