2018/407 - A product named ‘brown fused alumina slag’ which is a by-product obtained during the production of ordinary electro-corundum in electric furnaces. The product is composed of the following ingredients (% by weight): — iron 75 — silicon 15 — titanium 5 — aluminium 3 — other metals 2 The product is used for concentrating metal ores by selective flotation in the gravimetric separation process. - The Trade Hub