Tiêu đề 24.-Metallurgy-Notes.pdf ✅

1. Metallurgy Introduction Metallurgy y The extaction and isolation of an element from its combined from involves various principles of chemistry. y Some general principles are common to all the extraction processes of metals. Mineral : y The naturally occurring chemical substances in form of which the metals occur in the earth crust along with impurities are called minerals. Ex. Mineral of Aluminium – Bauxite, Cryolite, Clay, Feldspar, Mica. Ore : y The mineral from which metal can be extracted easily & economically Ore → Metal Ex. Fe – Fe2O3 (Haematite), Fe3O4 (Magnetite), FeSO2 (Iron pyrite), FeCO3 (Siderite) Metallurgy Definition The entire scientific and technological process used for isolation of the metal from its ores is known as metallurgy. Definition Those compounds of metals in which metal occurs in nature is called minerals. Concept Ladder “All ores are minerals but all minerals cannot be ores.”