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Maintenance method of gas permeable brick of vanadium extraction converter and production method of converter vanadium extraction

A technology of air-permeable bricks and converters, applied in the direction of furnaces, furnace components, manufacturing converters, etc., can solve the problems of low production efficiency, achieve the effect of improving production efficiency and reducing time

Inactive Publication Date: 2010-03-31
PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of low production efficiency in terms of shutdown time and low production efficiency caused by the inability to keep the converter in a good operating state for a longer period of time and reduce the time for maintenance of the permeable bricks of the converter in the above-mentioned prior art. , to provide a converter that can keep the converter in a good running state for a long time, and the number of shutdowns for maintenance of the converter permeable bricks is less, thereby greatly improving the production efficiency and improving the life of the converter permeable bricks Maintenance method of breathable bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

reference example 1

[0033] Mix vanadium-containing molten iron into the converter, blow oxygen into the molten iron, the oxygen pressure is 0.6 MPa, the oxygen supply is 10 cubic meters per ton of molten iron, and the oxygen supply time is 300 seconds. Pressure 0.6 MPa, relative to every ton of molten iron, nitrogen flow rate is 1.0 cubic meters per hour, vanadium extraction coolant needs to be added during blowing, based on the total weight of vanadium extraction coolant, this vanadium extraction coolant contains 95 wt. % of iron oxide, 6% by weight of SiO 2 , 0.3 wt% V 2 o 5 , 3% by weight MgCl 2 , the added amount of the vanadium extracting coolant is 22 kg / ton of iron, and after the oxygen blowing is completed, the molten pool temperature is 1400° C., and the vanadium slag and semi-steel are obtained. The average rest time between each furnace is 10 minutes.

Embodiment 1

[0035] This embodiment is used to illustrate the maintenance method of the converter permeable brick and the method of extracting vanadium from the converter according to the present invention.

[0036] (1) Use the 120-ton vanadium extracting converter of Panzhihua New Steel Vanadium Company Steel Plant to extract vanadium according to Reference Example 1. After every 5 furnaces of vanadium extraction production, adjust the nitrogen gas flow rate of the bottom blowing permeable brick to 0 cubic meters per hour. Use the PS-YII gunning machine produced by Haoxin Machinery Factory in Gongyi City, Henan Province, and spray the breathable brick at the bottom of the vanadium extraction converter with 150 kg of vanadium extraction converter gunning charge produced by Panzhihua Yinjiang Jinyong Company. Gunning conditions include gunning time of 3 minutes, gunning temperature of 900°C, gunning water pressure of 0.25 MPa, gunning air pressure of 0.2 MPa, and gunning charge flow rate of...

Embodiment 2

[0046] This embodiment is used to illustrate the maintenance method of the converter permeable brick and the method of extracting vanadium from the converter according to the present invention.

[0047] Carry out the maintenance method of the converter ventilation brick and the maintenance method of the converter and the vanadium extraction method of the converter according to the method of embodiment 1, the difference is:

[0048] After every 10 furnaces of vanadium extraction in step (1), the flow rate of the bottom blowing nitrogen gas is adjusted to 20 cubic meters per hour, and the amount of the gunning charge of the vanadium extraction converter is 200 kg. Gunning conditions include gunning time of 5 minutes, gunning temperature of 1100°C, gunning water pressure of 0.3 MPa, gunning air pressure of 0.25 MPa, and gunning charge flow rate of 70 kg / min , The flow rate of spraying water is 38 kg / min. Then the gunning coating was sintered at 1100°C for 2.5 minutes, and then t...

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PUM

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Abstract

The invention provides a maintenance method of gas permeable bricks of a vanadium extraction converter. The method comprises the steps of repairing spray repair furnace charge to the erosion positionsof the gas bricks and then sintering the spray repair furnace charge. The invention also provides a production method of a converter vanadium extraction, which comprises carrying out vanadium extraction and the maintenance on the converter. The method of the maintenance of the converter comprises the maintenance of the gas permeable bricks of the converter, which comprises the deducting and repairing of the gas permeable bricks of the converter, wherein the maintenance of the gas permeable bricks of the converter also comprises the spray repairing of the gas permeable bricks of the converter,and the method of the spray repairing of the gas permeable bricks of the converter is the maintenance of the gas permeable bricks of the converter. The method can promote the converter to keep running in a good state for a longer time, and the production halts for maintaining the permeable bricks of the converter is not frequent, thereby the method has the advantages of greatly improving the production efficiency, prolonging the service life of the gas permeable bricks of the converter and reducing the cost.

Description

technical field [0001] The invention relates to a maintenance method for a vanadium extracting converter ventilation brick. The invention also relates to a production method for extracting vanadium in a converter. Background technique [0002] The use of top-bottom combined blowing converter has good metallurgical effect in vanadium extraction, and the vanadium extraction process at home and abroad is developing towards the direction of using top-bottom combined blowing for steelmaking. Top-bottom double blowing means blowing oxygen from the top of the converter and blowing inert gas from the bottom of the converter to smelt the molten steel in the converter. Stir the vanadium slag and the carbon-containing semi-steel with an inert gas to strengthen the redox process between them, thereby reducing the vanadium content in the semi-steel and the iron oxide content in the vanadium slag, and correspondingly increasing the V in the vanadium slag. 2 o 5 content. The key equipm...

Claims

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Application Information

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IPC IPC(8): F27D1/04B05D7/24B05D3/00C04B35/66C21C5/36
Inventor 卓钧叶翔飞谭成英肖明富李清春解明科王二军李安林
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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