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Process for smelting schreyerite by blast furnace with cooling block

A technology of blast furnace smelting and vanadium-titanium ore, which is applied in the field of high-basicity vanadium-titanium sintered ore mixed with acidic vanadium-titanium pellets, and modular blast furnace smelting, which can solve the problem of low alkalinity control, high raw material requirements, and cooling intensity. Major and other issues

Inactive Publication Date: 2006-06-21
HEBEI LUANHE IND GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the standard furnace type blast furnace, the modular blast furnace has the advantages of less investment and faster construction, but it has higher requirements for raw materials; due to the thinning of the furnace wall and high cooling intensity, the edge is required to be relatively developed to ensure the stability and uniformity of the edge gas flow; The wind speed is required to reach the blowing center; the furnace temperature is relatively required in the upper limit range; the alkalinity control is low

Method used

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  • Process for smelting schreyerite by blast furnace with cooling block
  • Process for smelting schreyerite by blast furnace with cooling block

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Embodiment Construction

[0011] The following examples will further illustrate the present invention.

[0012] The process flow is:

[0013]

[0014] The main points of the process of smelting vanadium-containing molten iron from the modular blast furnace are: ① increase the standard wind speed; ② reduce the vanadium content of pig iron; ③ reduce the binary basicity of the slag.

[0015] ①Controlling the standard wind speed: The relative edge of the modular blast furnace is relatively developed. Compared with the smelting of vanadium-titanium ore, the resistance of the material column to the penetrating ability of the blast increases, which is easy to produce a central dead material column, and the area of ​​the tuyere is reduced, and the standard wind speed is increased. , Improve the kinetic energy of the blast, improve the penetration capacity of the blast, and make the three distribution of the gas flow tend to be standardized.

[0016] The parameters are shown in the table below:

[0017] ...

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Abstract

The invention relates the technology of smelting schreyerite by high furnace, specially high pH value schreyerite sintered ore and acid schreyerite pellet ore. The method comprises the following steps: mixing the sintered ore containing vanadium and pellet ore containing vanadium, smelting them by modular high furnace to get iron melt containing vanadium, and carrying out steel production. The key points of the method are following: 1 improving standard speed; 2 reducing the foundry iron containing vanadium; 3 lowering the basic capacity of clinker. The invention makes the special type ore smelting technology requirement common. The main econo-technical indicators are good. The availability ratio is 2.23-2.84t / m3d, wind temperature is 705-988Deg.C and comprehensive coke ratio is 582-634kg / t.

Description

Technical field: [0001] The invention relates to a process for smelting vanadium-titanium ore in a blast furnace, in particular to a process technology of adding acid vanadium-titanium pellets to high-basicity vanadium-titanium sintered ore and smelting in a modular blast furnace. Background technique: [0002] At present, people generally use standard furnace type blast furnace smelting for vanadium-titanium ore smelting, and use the well-known common standard blast furnace process operation. The modular blast furnace replaces the blast furnace cooling staves with large cooling modules to achieve the purpose of blast furnace cooling. Compared with the standard furnace type blast furnace, the modular blast furnace has the advantages of less investment and faster construction, but it has higher requirements on raw materials; due to the thin furnace wall and high cooling intensity, the edges are required to develop relatively to ensure the stability and uniformity of the edge ...

Claims

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Application Information

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IPC IPC(8): C21B5/02C22B1/14
Inventor 段如刚裴士清
Owner HEBEI LUANHE IND GROUP
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