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High silicon silicon manganese alloy smelting method

A high-silicon-silicon-manganese alloy and smelting method technology, which is applied in the direction of improving process efficiency, can solve problems such as poor furnace conditions, achieve smooth slag discharge, reduce stab fire, and speed up heat and mass transfer in the furnace. Effect

Active Publication Date: 2018-11-02
周三虎
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Problems solved by technology

[0012] The main purpose of the present invention is to provide a high-silicon-silicon-manganese alloy smelting method to solve the problem of poor furnace condition existing in the high-silicon-silicon-manganese alloy smelting method in the prior art

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[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0025] In order to solve the problem of poor furnace condition existing in the high-silicon-silicon-manganese alloy smelting method in the prior art, the present invention provides a high-silicon-silicon-manganese alloy smelting method.

[0026] Such as figure 1 The method for smelting high-silicon-manganese alloys includes steps S10 to S30, wherein, ...

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Abstract

The invention provides a smelting method for a high-silicon silicomanganese alloy. The smelting method comprises the following steps that S10, smelting raw materials are mixed, and the smelting raw materials comprise manganese ore, rich-manganous slags, silica, ferrosilicon, silicon slags, coke and dolomite; S20, the mixed raw materials are placed into a submerged arc furnace for smelting; and S30, high-silicon silicomanganese alloy melt obtained through smelting is separated from high-silicon silicomanganese alloy slags. The silicon slags are added in the smelting raw materials in the step S10, so that the content of silicon in the smelting raw materials can be effectively increased; therefore the content of carbon in the smelting raw materials is lowered, so that the downward inserting difficulty for electrodes is lowered; besides, after the silicon slags are added, the silicon in the silicon slags can be directly reacted with production materials of iron and manganese which are reduced first to obtain the high-silicon silicomanganese alloy; and manganous silicate generated by reaction of manganese and silicon oxides is reduced, so that the utilization rate of the manganese and silicon is improved, and resource waste is reduced.

Description

technical field [0001] The invention relates to high-silicon-silicon-manganese alloy smelting technology, in particular to a high-silicon-silicon-manganese alloy smelting method. Background technique [0002] In the prior art, when smelting high-silicon-silicon-manganese alloys, there are many chemical reactions in the high-temperature molten pool of silicon-manganese alloy smelting, and the process is relatively complicated. The following reactions are mainly analyzed: [0003] SiO 2 +2C=Si+2CO (1) T 始 =1660°C [0004] MnO+C=Mn+CO (2) T 始 =1404°C [0005] FeO+C=Fe+CO (3) T 始 =712°C [0006] The above three reduction reactions are all endothermic reactions, and the initial reduction reaction temperature of manganese and silicon is relatively high. Due to the difference in the initial reduction temperature, the smelting process of silicon-manganese alloy is essentially that iron and manganese are first reduced in the smelting raw materials to generate MnC similar to hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B4/06C22B7/04C22C22/00
CPCC22B4/06C22B7/001C22B7/04C22C22/00Y02P10/20
Inventor 周三虎周琪
Owner 周三虎
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