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Roasted Iron Pyrites
Pyrite (FeS2) is one of the most common and widely distributed sulphide minerals . In industry, pyrite is a chief raw material to produce sulphur, sulphur dioxide and sulphuric acid. Also, pyrite is usually found in association with valuable metallic elements such as Au, Ag and Cu that can be recovered in a comprehensive utilization of resources
Roasted iron pyrites, often referred to as ‘burnt pyrites’ or ‘calcined pyrites’, are produced by heating iron pyrites (FeS2), leading to the oxidation and release of sulfur dioxide (SO2), leaving behind an iron oxide-rich residue. This material serves multiple industrial applications, with a chief use in the production of sulfuric acid, one of the most important industrial chemicals used globally. The average iron content in Roasted Iron Pyrites is 65-68%. Roasting involved heating the pyrite ore in the presence of air. The sulfur in the pyrite would react with oxygen to form sulfur dioxide gas, leaving behind iron oxide (rust) as a byproduct.
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Roasted iron pyrites, also known as calcined pyrite, are primarily used as a source of sulfur dioxide for the production of sulfuric acid, a crucial chemical in various industries like fertilizers, detergents, and pigments. Roasted pyrite can be used in the production of iron sulfate, which has uses in nutritional supplements, inks, lawn conditioners, and water treatment. Additionally, pyrite can be a source of iron and other valuable metals, like copper, when it occurs in association with these elements.
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