Additive composition for metal sintering

A technology for metal sintering and alkali metal compounds, which is applied in the field of metal sintering compositions, can solve problems such as excessive heat, ore quality decline, and sinter strength reduction, and achieves the effects of improving sintering yield and saving heat sources.
CN102906285AInactive Publication Date: 2013-01-30吴美惠
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
吴美惠
Publication Date
2013-01-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided is an additive composition for metal sintering, which comprises an alkali metal compound that is added together with calcium carbonate constituting a melting accelerator for lowering the melting point in the process of sintering iron ore or the like, in such a way as to be able to economise on a heat source such as coal or coke which is necessary for the sintering of the iron ore, reduce the melting point of the sintered ore and enhance sintering efficiency by means of a chemical mechanism wherein the additive composition is additionally used together with the alkali metal compound during the sintering of the iron ore; the alkali metal compound being one or more compounds selected from the group consisting of lithium(Li), potassium(K), and sodium(Na).
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Description

technical field

[0001] The present invention relates to a composition for metal sintering; more particularly, relates to a composition for metal sintering by using an additive composition comprising an alkali metal compound in the sintering process of iron ore and the like A chemical mechanism capable of reducing the use of heat sources such as coal or coke required in the sintering of iron ore and the like, and increasing the melting performance and sintering efficiency of the sintered ore. Background technique

[0002] In general, iron ore refers to the rock or soil from which metallic iron can be mined economically, usually with an iron content of 30%-70%, which can be divided into magnetite, hematite, limonite and side iron ore. Most of the time, iron ore is in the form of oxidized steel rather than pure iron, so it is smelted into pig iron in blast furnaces.

[0003] Here, in the ironmaking process, iron ore is put into a blast furnace, and the oxygen in the iron ore ...

Claims

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