Kravtsov E. The peculiarities of technology of iron ore concentrate getting with low mass fraction of silica.

The dissertation is devoted to technologies of getting iron ore concentrate with a mass fraction oxide of silica less 0,3 % from the oxidized ore of underground mining of a Krivbass. The general physical laws of selective preparation of ore in roll crusher, allocation of unproductive granular fraction on a screen with the subsequent enrichment of the opened mineral particles of a screened product on a concentration table are formulated. Analytical dependences of force of an attraction of springs mobile crushed from a strength of ore minerals are received. Results of theoretical and experimental researches have allowed to develop a progressive way of disintegration of the oxidized iron ore and the subsequent concentration with obtaining of a commodity output, suitable for manufacturing baric and strontic ferrite in conditions of a crusher-sizing shop at mine "Gvardeiskaya".