Sentence Examples with the word Alkali waste

When the former is used it is roasted with calcium sulphate or alkali waste to form a matte which is then blown in a Bessemer converter or heated in a reverberatory furnace with a siliceous flux with the object of forming a rich nickel sulphide.

Large quantities are also recovered from alkali waste (see Alkali Manufacture); another source is the spent oxide of gas manufacture (see GAs).