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Method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity

A technology of vanadium-titanium magnetite concentrate and large air volume, which is applied in the field of metallurgy, can solve the problems of poor technical and economic indicators of smelting blast furnaces, and achieve the effects of increasing production and reducing air leakage rate

Active Publication Date: 2011-11-23
PANZHIHUA IRON AND STEEL +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the technical and economic indicators of the smelting blast furnace for sintering vanadium-titanium magnetite concentrate with the current sintering technology are poor, and a kind of equipment condition and sintering method that strengthens sintering to increase production and save energy is needed

Method used

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  • Method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity
  • Method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity
  • Method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity

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Experimental program
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Effect test

Embodiment 1

[0036] 1. Adopt high negative pressure fan and large air volume fan

[0037] (1) 2 main exhaust fans:

[0038] Air volume: 19800m 3 / min(working condition)

[0039] Fan inlet negative pressure: 16500Pa

[0040] Air volume per unit sintering area: Q=2×19800 / 360=110m 3 / (m 2 min)

[0041] (2) Head electrostatic precipitator

[0042] In view of the strict requirements of high negative pressure fans on dust concentration, two 330m 2 Horizontal three-electric field electrostatic precipitator, which can reduce the concentration of flue gas dust to 80mg / m 3 Next, protect the hood rotor.

[0043] Table 1 below lists the technical performance indicators of the high negative pressure equipment used in Embodiment 1 of the present invention.

[0044] Table 1 Technical performance of high negative pressure fan equipment

[0045]

[0046]

[0047] 2. Main exhaust system

[0048] The main exhaust system is composed of the main exhaust fan bellows, air collecting pipe, head e...

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Abstract

The invention discloses a method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity, comprising preparing, mixing, distributing, igniting and sintering, thermally breaking, cooling and screening, wherein the sintering is carried out under the conditions of the negative pressure of over 13500a and the unit area air quantity of a sintering machine of 100-110m<3>(m<2>.min); and the low negative-pressure ignition and full-wind sintering are adopted in the igniting and sintering process. According to the method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity, which is disclosed by the invention, the yield can be improved and vanadium-titanium sintering ore with high quality can be prepared at high efficiency.

Description

technical field [0001] The invention belongs to the field of metallurgy, and mainly relates to a method for efficiently preparing sintered ore by using vanadium-titanium magnetite concentrate as a main raw material and adopting high negative pressure and large air volume. Background technique [0002] At present, the blast furnace charge structure is mainly high alkalinity sinter + acid pellet + natural lump ore, but the price of pellet ore is high and natural lump ore resources are in short supply. Therefore, the pursuit of clinker ratio in blast furnace is mainly based on sinter ore. In some blast furnace charges, sintered ore even accounts for more than 90%. It can be seen that the pursuit of sinter output is still the main trend at present. [0003] With the shortage of resources, natural high-quality rich ore powder resources are less and less, and the concentrate powder after beneficiation is more and more used for sintering. Vanadium-titanium magnetite is one of the...

Claims

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Application Information

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IPC IPC(8): C22B1/16
CPCY02P10/20
Inventor 蒋大均杜斯宏何木光于天齐宋剑雷电
Owner PANZHIHUA IRON AND STEEL
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