Step 2) The crude antimony(III) oxide is purified by sublimation.Īntimony metal is oxidized to antimony(III) oxide in furnaces. Step 1) Crude stibnite is oxidized to crude antimony(III) oxide using furnaces operating at approximately 500 to 1,000 ☌. Re-volatilizing of crude antimony(III) oxide These steps do not take place in the EU but closer to the mining location. when the ore is rich in precious metals) by hydrometallurgical processes. Typical steps include mining, crushing and grinding of ore, sometimes followed by froth flotation and separation of the metal using pyrometallurgical processes (smelting or roasting) or in a few cases (e.g. The choice of process depends on the composition of the ore and other factors. Several processes for the production of crude antimony(III) oxide or metallic antimony from virgin material. Oxidation of antimony metal dominates in Europe. It is produced via two routes, re-volatilizing of crude antimony(III) oxide and by oxidation of antimony metal. Īs of 2010, antimony(III) oxide was produced at four sites in EU27. China produces the largest share followed by US/Mexico, Europe, Japan and South Africa and other countries (2%). Global production of antimony(III) oxide in 2012 was 130,000 tonnes, an increase from 112,600 tonnes in 2002. A mixed arsenic-antimony oxide occurs in nature as the very rare mineral stibioclaudetite. Like most polymeric oxides, Sb 2O 3 dissolves in aqueous solutions with hydrolysis. It is found in nature as the minerals valentinite and senarmontite. It is the most important commercial compound of antimony. Antimony(III) oxide is the inorganic compound with the formula Sb 2O 3.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |