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Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese

A technology of manganese-silicon alloy and low-carbon ferromanganese, which is applied in the field of producing manganese-silicon alloy materials and cement raw materials, can solve pollution and other problems, achieve the effects of solving environmental protection, solving effective utilization problems, and reducing the loss of metal manganese

Inactive Publication Date: 2002-08-14
纪翔
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Problems solved by technology

[0003] The object of the present invention is to provide a method for producing manganese-silicon alloy material and cement raw material with medium and low carbon ferromanganese smelting slag, so as to solve the reutilization of ferromanganese smelting slag waste and eliminate its pollution to the environment

Method used

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  • Process for preparing Mn-Si alloy from slags generated by smelting low-carbon ferromanganese

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Embodiment Construction

[0009] The conditions for implementing this process method are:

[0010] Smelting furnace: one 1250kw electric arc furnace

[0011] Lifting equipment: a 12.5-ton crane

[0012] Slag bag: at least one slag bag of 4 tons

[0013] Shaking machine: one 15-ton shaking machine

[0014] pool

[0015] The production process of the ingot mold body is as follows: During the smelting process of medium and low carbon ferromanganese in the electric arc furnace, when the slag comes out of the furnace, the slag at about 1500 ° C is poured into the slag bag, and at the same time, 15-20% of the slag weight is added to the slag bag. Slag fine powder (silicon slag crystallized by ferrosilicon, ferrosilicon powder) is used as a reducing agent, and then the slag bag is hoisted on the shaking bag machine by driving, and the shaking bag machine shakes the slag bag at a speed of 40-47 rpm for 8-15 minutes , so that the slag and silicon slag fine powder are fully contacted at high temperature, so ...

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Abstract

A process for preparing Mn-Si alloy from the slags generated in smelting low-carbon ferromaganese includes such steps as slagging, loading in slag ladle, adding ferrosilicon powder, and sufficient waving for reducing reaction to generate Mn and SiO2 and fuse the Mn and ferrosilicon together at 1500 deg.C to obtain Mn-Si alloy moulding, cooling and demoulding. The residual dregs can be used as rawmaterial of cement as its managanese oxide content is greatly reduced.

Description

technical field [0001] The present invention designs a utilization method of ferromanganese smelting slag, specifically relates to the method of using the slag to extract the contained manganese and produce manganese-silicon alloy materials and cement raw materials. With this method, the waste slag can be effectively utilized. , and eliminated serious pollution to the environment. Background technique [0002] At present, in the metallurgical industry, the slag produced in the middle and low carbon ferromanganese smelting process is dumped as waste slag before being used. Since this kind of slag has a high content of manganese oxide, generally 15--19%, it cannot be directly used as building materials or cement raw materials, and discarding it will not only cause serious loss of metal manganese, but also seriously pollute the environment. Contents of the invention [0003] The object of the present invention is to provide a method for producing manganese-silicon alloy mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04
CPCY02P10/20
Inventor 纪翔杨维富
Owner 纪翔
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