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Superlow temperature sinter and mineralization energy-saving additive

An ultra-low temperature, additive technology, applied in the field of additives for metallurgical sintering pellets, can solve the problems of neglect and difficult to control the sintering temperature, and achieve the effect of promoting the burning speed, improving the quality, and promoting the effect of burning through.

Inactive Publication Date: 2006-12-06
董素华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the whole sintering process is often ignored, especially the sintering temperature is difficult to control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Select raw materials by weight percentage:

[0041] 40% Borax is used as the ultra-low temperature additive;

[0042] 20% sodium nitrate is used as the oxygenator;

[0043] The melting agent is 20% fluorite powder; the particle size of the fluorite powder is less than 0.25mm;

[0044] The catalyst is NaCl 18%;

[0045] Vermiculite 2% is selected as the pore-forming agent.

[0046] The method: pulverize the above-mentioned substances to less than 1mm, mix and stir according to the proportion for 3 minutes to become the finished additive product, and then sub-package it.

Embodiment 2

[0048] Select raw materials by weight percentage

[0049] 30% boric acid is selected as the ultra-low temperature additive;

[0050] 20% sodium perchlorate is used as the oxygenator;

[0051] The melting agent is 18% fluorite;

[0052] The catalyst is KCl 18%;

[0053] The pore-forming agent is 14% polyvinyl chloride.

[0054] The method is the same as in Example 1.

Embodiment 3

[0056] Select raw materials by weight percentage:

[0057] 40% Borax is used as the ultra-low temperature additive;

[0058] 10% potassium permanganate is used as the oxygenator;

[0059] 25% fluorite is used as the melting agent;

[0060] The catalyst is KCl, NaCl 15%;

[0061] The pore-forming agent is vermiculite and perlite 10%.

[0062] The method is the same as in Example 1.

[0063]

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PUM

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Abstract

The present invention discloses an ultra-low temperature sintering mineralization energy-saving additive. It contains (wt%) 10-60% of ultra-low temp. mineralizer, 10-30% of oxygenation agent, 10-40% of melting agent, 10-40% of catalyst and 0-30% of pore-forming agent. Said invention is a powder agent made up by mixing all the above-mentioned materials. Said invented additive has the actions of catalytic improving combustion, inhibiting 2CaO2 and SiO2 undesirable transformation in the sintering process, promoting main binding phase SFCA formation of sintering ore, inhibiting low-temperature reduction pulverization action and raising catalytic sintering process, etc.

Description

Technical field [0001] The invention relates to an additive for metallurgical sintered pellets, which is mainly used to improve the metallurgical properties of sintered ore, save energy and reduce consumption. Background technique [0002] As we all know, the main purpose of the production of sintered pellets is to sinter powdered materials containing iron powder into agglomerates to provide artificial rich ore with a certain particle size composition and good metallurgical properties for blast furnace smelting. However, in the long-term sintering production process, a large amount of solid fuel is always added to produce high temperature after burning, and a large amount of liquid phase is produced after ore powder, flux and other powdery materials are melted. During the cooling process, these liquid phases are used to make the powdery The material is glued into blocks. With the development of sintering theory, low-temperature sintering technology is gradually proposed and popul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/243
Inventor 王琳董素华
Owner 董素华
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