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Environment-friendly type granular ladle covering agent containing carbon with double composite efficiency

A ladle covering agent, an environmentally friendly technology, applied in the field of carbon-containing granular ladle covering agents, can solve the problems of primary resources, limited carbon sources, and singleness

Inactive Publication Date: 2006-07-19
SHANGHAI PANLONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the used binding agent of the carbon-containing granular ladle covering agent in the prior art and is all limited to primary resources; Carbon source is all limited to single crystalline carbon (as flake graphite) or single amorphous carbon ( Such as carbonized rice husk) the above-mentioned problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0005] Embodiment 1: get 24 kilograms of calcium oxide, 7.5 kilograms of magnesia, 8.5 kilograms of aluminum oxide, 21 kilograms of silicon dioxide, 1.5 kilograms of ferric oxide, 15.5 kilograms of loss on ignition, 22 kilograms of carbon, add appropriate amount by corn etc. Starch processed from crops - food-grade organic binder and alkaline, pre-melted inorganic binder for secondary resources, add appropriate amount of water as needed, stir evenly, extrude and granulate, and bake until the moisture content of the finished product is ≤1%. for packaging.

Embodiment 2

[0006] Embodiment 2: get 20 kilograms of calcium oxide, 9 kilograms of magnesium oxide, 10 kilograms of aluminum oxide, 19 kilograms of silicon dioxide, 1 kilogram of ferric oxide, 15 kilograms of loss on ignition, 26 kilograms of carbon, add an appropriate amount of corn etc. Food-grade starch organic binder for crop processing and inorganic binder for alkaline and pre-melted secondary resources, add appropriate amount of water as needed, stir evenly, extrude and granulate, bake until the moisture content of the finished product is ≤1%, and then pack .

[0007] Due to the good particle formability, good initial strength and later strength, low powder content, no dust and no smoke during use, no pollution to the environment and molten steel, it meets the requirements of environmental protection and circular economy; under low temperature and high temperature conditions Both constitute a carbon skeleton, and can maintain good thermal insulation performance throughout the castin...

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Abstract

The invention relates to an environment-friendly type carbonaceous granular ladle covering agent with dual effects, which comprises (by weight percent) calcium oxide 20-30%, magnesium oxide 5-10%, aluminium oxide 8-14%, silicon dioxide 15-25%, ferric oxide 1-3%, burning-loss amount 15-30%, and carbon 20-30%.

Description

technical field [0001] The invention relates to a carbon-containing granular steel ladle covering agent, in particular to an environment-friendly carbon-containing granular steel ladle covering agent with double composite functions. Not only is it non-polluting to the environment and molten steel, but the particles have good initial strength and later strength. At the same time, the carbon skeleton formed at low temperature and high temperature can maintain good thermal insulation performance throughout the casting process. Background technique [0002] At present, most of the inorganic binders, organic binders or composite binders used in general carbon-containing granular ladle covering agents are primary resources, such as aluminum phosphate-based inorganic binders and clay. Na in Sodium Acid 2 O is highly corrosive to refractory materials such as furnace linings; for example, hydrochloric acid or nitric acid needs to be added during the production of organic binder dext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/111
Inventor 王兆达江浦琼徐永斌徐兵
Owner SHANGHAI PANLONG IND
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