Caldum carbide

Caldum carbide in the molten state is drawn off from one or more (up to 6) tap holes in the base of the furnace. It is collected in crucibles, where it cools for one to two hours and is then emptied for subsequent crushing and screbcing (Fig. 5.2). 

The manufacture of acetylene from caldum carbide is marked by the need to handle large amounts of solids. In fact, although the yield of the hydrolysis reaction is practically quantitative, the manufacture of 11 of acetylene requires 3.1 t of carbide with a purity of 80 per cent weight. 

Aero Caldum Carbide. [Cyanamid Canada] Caldum carbide. 

Bor-kalk, m. caldum borate, -karbid, n. boron carbide. 

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