Auxiliary agent for reducing low temperature reduction index of sintering ore
A sintered ore, low-temperature technology, applied in the field of metallurgy, can solve problems such as calcium chloride corrosion effect, achieve remarkable effect, simple use, and reduce the effect of low-temperature reduction pulverization index
Inactive Publication Date: 2009-11-18
LAIWU IRON & STEEL GRP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The invention mainly solves the problems of corrosion caused by the original spraying of calcium chloride and low effect
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0022] The auxiliary agent for reducing the low-temperature reduction index of sintered ore has the following chemical composition and weight percentage: 4% boric acid, 40% calcium chloride, 30% calcium nitrate, 25% magnesium sulfate, and 1% fatty alcohol polyoxyethylene ether.
Embodiment 2
[0024] The auxiliary agent for reducing the low-temperature reduction index of sintered ore has the following chemical composition and weight percentage: 4.9% boric acid, 30% calcium chloride, 40% calcium nitrate, 25% magnesium sulfate, and 0.1% fatty alcohol polyoxyethylene ether.
Embodiment 3
[0026] The auxiliary agent for reducing the low-temperature reduction index of the sintered ore has the following chemical composition and weight percentage: 4.5% boric acid, 40% calcium chloride, 35% calcium nitrate, 25% magnesium sulfate, and 0.5% fatty alcohol polyoxyethylene ether.
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Abstract
The invention relates to the manufacture of an auxiliary agent for reducing the low-temperature reduction index of sintered ore and a method for using the same. 40%, magnesium sulfate 25-30%, fatty alcohol polyoxyethylene ether 0.1-1%; mix the above-mentioned chemicals with suitable content and particle size evenly, and pack and seal 25kg per bag. Dissolve the above-mentioned auxiliary agent in water according to the content of 3% completely, and spray the prepared solution according to the amount of 3.4kg solution / ton of sintered ore. Provided are the preparation and use method of a chemical auxiliary with simple formula, remarkable effect, low cost, and simple use method, which are suitable for reducing low-temperature reduction and pulverization of sintered ore. Powdering index RDI+3.15mm10%.
Description
technical field [0001] The invention relates to the technical field of metallurgy and belongs to the sintering category. It is a preparation and application method of an auxiliary agent for reducing the pulverization index of sintered ore at low temperature reduction. Background technique [0002] The low-temperature reduction pulverization index of sinter is a metallurgical performance index reflecting the fragmentation degree of the ironmaking charge during the low-temperature reduction process in the upper and middle parts of the blast furnace, and is one of the important factors affecting the production of the blast furnace. If the low-temperature reduction index is too high, the air permeability of the material column in the blast furnace will deteriorate, the output will decrease, and the coke ratio will increase. Therefore, reducing the pulverization index of sinter at low temperature reduction is of great significance for increasing production and reducing consumpti...
Claims
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IPC IPC(8): C22B1/16
Inventor 李志峰种振宇李艳青孙业新闫志华杨军李强
Owner LAIWU IRON & STEEL GRP