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It is known that the medium-grade and low-grade iron ores before the direct use in metallurgical furnaces are almost always concentrated. For ore-grain release all run-of-mine ore is crushed and milled. The result of such operations is a finely ground concentrates, which are then subjected to clotting. Among the known methods of clotting of the wide-spread high-temperature methods - sintering and pelletizing followed by baking raw pellets. During these processes, there is a partial removal of detrimental impuritie...