ON EXPEDIENCY OF THE CHANGE OF THE IRON BOARD CONTENT IN THE ORE FOR FIELDS OF THE ORE CONCENTRATING INTEGRATED WORKS IN KRIVOROZHSKI IRON ORE BASIN

摘要

A procedure of estimation of the iron board content in the ore for fields of the ore-concentrating integrated works in Krivorozhski iron ore basin is suggested which allows to simply and fast determine the expediency of the change of the iron board content in the ore in direction of decrease or increase. The results of investigation on the influence of the iron board content in the ore on manufacturing and economic indices of the concentrate products in integrated works of Krivorozhski iron ore basin are presented: stocks of the ore in the contours of open casts, coefficients of overburden, content of magnetic iron in the ore, concentrate output, iron content in concentrate, summary profit from the concentrate manufacture. Conclusion is made on expediency of the change of the iron board content in the ore for different ore-concentrating integrated works of Krivorozhski basin.