Charge for Producing Iron-Ore Pellets (Variants)
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United States of America
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Jan 9, 2020
app pub date -
Jul 17, 2019
filing date -
Jul 17, 2019
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Abstract
The invention relates to the field of producing iron-ore pellets for blast-furnace smelting. In a first variant, a charge contains iron-ore concentrate and manganese limestone as a binding agent and flux, the ratio of charge components in wt % being as follows: 1.0-5.0 manganese limestone; and the balance iron-ore concentrate. In a second variant, the charge contains iron-ore concentrate, bauxite as a modifying agent, and manganese limestone as a binding agent and flux, the ratio of charge components in wt % being as follows: 1.0-3.5 manganese limestone; 1.2-1.5 modifying additive; and the balance iron-ore concentrate. The invention increases the strength of green and sintered pellets while preserving a high iron content, reduces the softening-melting interval of the pellets in a blast furnace, and simplifies the production of iron-ore pellets.
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