Antimony - WikipediaAntimony is a chemical element with symbol Sb (from Latin: stibium) and atomic number 51. ... Most antimony is mined as the sulfide; lower-grade ores are concentrated by froth flotation, while higher-grade ores are heated to 500–600 °C, the.ore mining antimony,The metallurgy of antimony - Massachusetts Institute of Technologymercury sulfides. Antimony has been produced from ores in over 15 countries. . producer, accounts for about 90% of the world's mined production and the vast.