Environment-friendly ferrochrome smelting furnace burden and preparation method thereof

A smelting furnace and environment-friendly technology, applied in the field of environment-friendly ferrochromium smelting charge and its preparation, can solve the problems of poor reduction ability of chrome ore, high viscosity of slag, poor fluidity, etc. The effect of liquidity

Active Publication Date: 2020-11-03
徐州宏阳新材料科技股份有限公司
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Problems solved by technology

[0003] The charge in the existing ferrochrome smelting process often uses the tundish and the slag existing between the tundish and the taphole as the returned slag, but the slag has poor fluidity during use and the reduction ability of chromium ore is relatively low. Poor, and need to use a lot of coke, very unenvironmental protection, and the slag viscosity is relatively high

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  • Environment-friendly ferrochrome smelting furnace burden and preparation method thereof

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", and "circumferential" are based on...

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Abstract

The embodiment of the invention discloses an environment-friendly ferrochrome smelting furnace burden and a preparation method thereof in the technical field of ferrochrome smelting. The environment-friendly ferrochrome smelting furnace burden comprises chromium ore powder, coke, serpentine, silica, bluestone and return slag; and the return slag comprises a tundish, furnace slag and iron oxide, wherein the furnace slag and the iron oxide are stored between the tundish and an iron outlet. According to the furnace burden and the method, the iron oxide is added into the furnace burden, so that the melting point of the furnace slag is lowered, and the flowability of the furnace slag is improved; the iron oxide is added into the furnace burden, so that the reducing capacity of the furnace burden is enhanced, and the chromium ore reducing speed is increased; and the iron oxide is added into the furnace burden, so that the activity of the furnace burden is enhanced, the viscosity of the furnace slag is reduced, the slag-metal separation effect is good, and the product purity is high.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of ferrochrome smelting, in particular to an environment-friendly ferrochrome smelting charge and a preparation method thereof. Background technique [0002] Ferrochromium is an important raw material for the production of stainless steel. It is mainly used in the production of stainless steel, ball bearing bars, tool steel, nitrided steel, heat-strength steel, quenched and tempered steel, carburized steel and hydrogen-resistant steel. This is due to the role of chromium in stainless steel. The decisive role, the element that determines the corrosion resistance of stainless steel is chromium, and each stainless steel contains a certain amount of chromium. The smelting methods of high-carbon ferrochrome include electric furnace method and plasma furnace method. Most of the high-carbon ferrochrome with high chromium content is smelted in electric furnace in submerged arc furnace by s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24C22B34/32C22B7/04C22B4/06C22C35/00
CPCC22B1/24C22B1/2406C22B4/06C22B7/04C22B34/32C22C35/00Y02P10/20
Inventor 龚晓俅邵珠航
Owner 徐州宏阳新材料科技股份有限公司
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