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Compound slag-forming constituent for converters

A composite slagging agent and converter technology, applied in the field of metallurgy, can solve the problems of weak slagging ability and the like, and achieve the effects of low cost, reduction of molten iron loss and low price

Inactive Publication Date: 2010-04-14
上海盛宝冶金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of composite slagging agent for converter according to above-mentioned weak point of prior art, this composite slagging agent also contains a certain amount of MnO except containing higher FeO, wherein the content of FeO is greater than The content of MnO can completely solve the problem of weak slag removal ability in the initial stage of converter smelting

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0017] The features of the present invention and other relevant features are described in further detail below through the embodiments, so as to facilitate the understanding of those skilled in the art:

[0018] The weight percentage of iron in the OG mud in the following examples is 53%, the weight percentage of iron in the iron oxide scale is 65%, the weight percentage of iron in the dust removal powder is 50%, and the content of MnO in the manganese ore is 40%. All percentages are by weight.

[0019] 1, iron oxide 60% concrete embodiment (table 1)

[0020] OG slime

Iron oxide scale

Dust removal powder

manganese ore

Metallurgical glue

cement clinker

75％

18％

4％

3％

66％

20％

4％

10％

80％

10％

4％

6％

[0021] 2, iron oxide 61% concrete embodiment (table 2)

[0022] OG slime

Iron oxide scale

Dust removal powder

manganese ore

Metallurgical glue

cement ...

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Abstract

The invention relates to the type of metallurgy, in particular to a compound slag-forming constituent for converters, which are used for slag-forming during steel-making of the converters, and improve the smelting efficiency of the converters, the raw material component of the compound slag-forming constituent mainly comprises ferric oxide and manganese oxide, wherein compound slag-forming constituent comprises the following components in percentage by weight: 60%-80% of the ferric oxide, not more than 20% of the manganese oxide, and the other component is additive. The compound slag-forming constituent has the advantages that the content of FeO is high, and the content of MnO is low, which is more convenient for the initial stage slag-smelting of converters, simultaneously the loss of molten iron is reduced, since the compound slag-forming constituent adopts steel-making industrial waste which has low cost, and is difficult to recover, such as OG sludge, dust-removing powder, ferric oxide sheets and the like, as raw materials, the cost of products is low, and the compound slag-forming constituent is green, environment-friendly, and economical.

Description

technical field [0001] The invention relates to metallurgy, in particular to a composite slagging agent for converters used for slagging during converter steelmaking to improve converter smelting efficiency. Background technique [0002] At present, there are the following problems in converter slagging: the amount of lime and light-burned dolomite is too large, and there are no strengthening measures for slag in the early stage, the melting point of slag is high, and the reactivity is poor, resulting in weak dephosphorization ability of slag, high free CaO and excessive MgO in the final slag. saturation. [0003] In the prior art, for example, invention patent ZL200510037631.1 converter high-efficiency metallurgical composite agent and its preparation method and application. The disadvantage is that the content of MnO is too high, and the content of FeO most needed for CaO and MgO melting is too low, resulting in slow slagging speed and high cost, which does not meet the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/36
Inventor 刘欣隆孙树森周四明
Owner 上海盛宝冶金科技有限公司
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