Chemistry

Nitrogen trichloride, also known as trichloramine, is prepared by the absorption of chlorine gas into a slightly acid ammonium chloride solution. That is the chemical…

Carbonyl metallurgy is used to manufacture products of iron, nickel, steel, and other metals. Coatings are produced by vapor plating using metal carbonyl vapors. It…

The term ‘cast-iron’ covers a family of ferrous alloys. Cast iron is a group of iron-carbon alloys with a carbon content of more than 2%.…

Semi-steel is not actually a true form of steel by industry classification, but instead is a high-grade form of iron. Semi-steel casting is a lower-cost…

In crystallography one of the structural groups to which crystalline solids can be classified is the monoclinic crystal system. Three vectors define a crystal-system. Three…

Dichlorine monoxide is a molecular formula Cl2O inorganic compound. It is a reddish gas which is a dark brown liquid, at temperatures below freezing. It…

Wrought iron is an iron alloy with a very low carbon content, which differs from pure iron or cast iron. It is an iron alloy with…

Cupellation is the process of recovering precious metals from lead by melting the alloy in a cupel and oxidizing the lead by means of an…

The Waelz process is one of the most efficient technologies, in terms of capacity and quality, able to recover nearly 90% of zinc content from…

Zinc is found in the earth’s crust primarily as zinc sulfide (ZnS). Zinc smelting is the process of converting zinc concentrates (ores that contain zinc) into…

Covellite, also known as ‘covelline’, is a mineral of cupric sulfide (CuS) and is copper ore. This indigo blue mineral is generally a secondary mineral…

Smelting is the process by which a metal is obtained at temperatures beyond the melting point from its ore. It is a process of applying…