Electric arc furnace operations

Corundum is an aluminum oxide that possesses a hexagonal crystal structure, The compound is extremely hard (2000 on the Knoop scale), sp gr 3.95, and is widely used in abrasives and refractories. Corundum is manufactured by fusing alumina or bauxite in an electric arc furnace operated at about SIOO C. 

J.A.T. Jones, Interactions between electric arc furnace operation and environmental control. 

In addition to the cost balance shown in Table 4, the electric arc furnace operators benefit from an additional recycling fee of between 50 and 100 per tonne of batteries recycled, dependant upon quantity and other commercial factors. At an addition of 1% of scrap weight this is equivalent to a cost reduction of 6 1 per tonne of scrap and, hence, typically equal to 1.1 per tonne of product. This is a very significant additional economic benefit for the operator. In some cases, a proportion of this profit is allocated by agreement with local environment agencies, to additional environmental improvements within the facility. 

Table II. Typical feed and white alloy composition in electric arc furnace operation...

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See also in sourсe #XX -- [ ]

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