Waste-free processing of waste nickel slags

The paper considers one of possible options for the waste-free processing dumped masses nickel slags, accumulated over years operation some enterprises. This process includes use hydroand pyrometallurgical processing, which results in three products: iron sulfate, ferrosilicon with a small admixture aluminum, and slag from smelting. has hardness 7-7.5 Mohs can be used as an abrasive powder sandblasting, or raw material production high alumina cement. resulting sulfate subsequently purified copper, nickel, magnesium, aluminum impurities brought to existing GOST compositional requirements. ferrosilicon, whose silicon content is similar that marked FS 75 admixture, deoxidation alloying all grades steels cast irons. In this case, specifications drawn up participation consumer enterprise regulatory document such ferrosilicon. obtained during smelting also defined within framework these producing