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Blast furnace scrap steel smelting system and smelting process

A steel smelting and blast furnace technology, applied in the blast furnace scrap steel smelting system and smelting process, can solve the problems of tuyere temperature rise, high oxygen enrichment rate, tuyere small sleeve burning loss, etc., to improve reaction speed, avoid damage, and optimize air permeability and the effect of liquid permeability

Pending Publication Date: 2021-07-16
SGIS SONGSHAN CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to the high oxygen enrichment rate in the blast furnace, the temperature of the tuyere will rise sharply after the liquid molten iron comes into contact with the small copper tuyere sleeve, which will cause the small tuyere sleeve to burn

Method used

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  • Blast furnace scrap steel smelting system and smelting process

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Embodiment Construction

[0021] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a d...

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Abstract

The invention relates to the technical field of blast furnace ironmaking, and particularly discloses a blast furnace scrap steel smelting system and a smelting process. The blast furnace scrap steel smelting system comprises a blast furnace module, a material conveying module and a material bed module; the blast furnace module comprises a material receiving assembly, a material flow adjusting valve and a blast furnace body which are sequentially connected, an adjusting valve discharging hole is formed in the material flow adjusting valve, a material distribution chute is arranged below the adjusting valve discharging hole, one end of the material distribution chute is rotatably connected with the material flow adjusting valve, the other end of the material distribution chute can rotate close to or away from the material flow adjusting valve, and the material distribution chute can rotate around the axis of the blast furnace body; the material conveying module comprises a material conveying rail and a material conveying piece capable of moving in the extending direction of the material conveying rail, and the material conveying piece can convey materials to the material receiving assembly; and the material bed module is used for conveying materials including waste steel, ore and coke. According to the process, when coke and ore are conveyed to the blast furnace body, the materials fall on the edge of the bottom end; and when waste steel is conveyed, the materials fall into the middle of the bottom end. By adjusting the material distribution position, the risk of damaging the blast furnace body is reduced.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking, in particular to a blast furnace scrap steel smelting system and a smelting process. Background technique [0002] In recent years, with the increasing shortage of energy sources, the price difference between iron ore and scrap steel has turned upside down, and the economic benefits of scrap steel have become prominent, while scrap steel processing is mainly concentrated in the electric furnace process, which consumes high power and the scrap steel recovery rate is low; at the same time, the environmental protection pressure of steel companies has increased sharply in recent years , the demand for energy saving and emission reduction is becoming more and more prominent; because the blast furnace has good reduction and melting capabilities, the yield of iron can reach more than 98%, and scrap steel does not need to be reduced like iron ore, and it is heated and melted in the blast ...

Claims

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Application Information

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IPC IPC(8): C21C5/56C21B5/00
CPCC21C5/565C21B5/00Y02P10/20
Inventor 张涛颖吴金富曹旭陈彦铭侯赞兵刘传院范金欢黎文锋俞荣黎民杰梁清仁谢仁志卢华林邓晖李明星
Owner SGIS SONGSHAN CO LTD
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