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Stemming utilizing waste refractory material and preparation method thereof

A technology of waste refractories and gun mud, which is applied to the improvement of process efficiency, blast furnace parts, furnaces, etc., can solve the problems of discarding or burying, the failure of comprehensive utilization of waste electric furnace lining materials, and occupation of land resources, etc., to achieve Reduce iron infiltration rate, reduce cracking phenomenon, save the effect of environmental protection

Inactive Publication Date: 2013-02-20
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention is aimed at the problem that a large number of waste electric furnace lining materials in our country cannot be comprehensively utilized, discarded or buried, and occupy valuable land resources. Preparation

Method used

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  • Stemming utilizing waste refractory material and preparation method thereof
  • Stemming utilizing waste refractory material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The batching of gun mud adopts silicon carbide fine powder (≤0.088mm) to account for 10% of the batching quality; high-temperature asphalt fine powder (≤0.1mm) accounts for 5% of the batching quality; Jilin clay fine powder (≤0.073mm) accounts for 20% of the batching quality %; coke particles (≤3mm) account for 25% of the batching quality; industrial grade corundum fine powder (≤0.073mm) account for 10% of the batching quality; recycled electric furnace magnesium aluminum material particles (≤3mm) account for 10% of the batching quality, Recycled electric furnace magnesium-aluminum material particles (≤1mm) account for 10% of the batching mass, and recycled electric furnace magnesium-aluminum material fine powder (≤0.088mm) accounts for 10% of the batching mass. The amount of tar added is added, accounting for 20% of the total mass of the ingredients.

Embodiment 2

[0014] The batching of gun mud adopts silicon carbide fine powder (≤0.088mm) accounting for 15% of the batching quality; high-temperature asphalt fine powder (≤0.1mm) accounts for 5% of the batching quality; Jilin clay fine powder (≤0.073mm) accounts for 15% of the batching quality %; coke particles (≤3mm) account for 25% of the batching quality; industrial grade corundum fine powder (≤0.073mm) account for 15% of the batching quality; recovery of electric furnace magnesium aluminum material particles (≤3mm) account for 10% of the batching quality, Recycled electric furnace magnesium-aluminum material particles (≤1mm) account for 15% of the batching mass. Tar addition is extra, accounts for 18% of batching gross mass.

Embodiment 3

[0016] Silicon carbide fine powder (≤0.088mm) accounts for 20% of the batching quality; high-temperature asphalt fine powder (≤0.1mm) accounts for 5% of the batching quality; Jilin clay fine powder (≤0.073mm) accounts for 15% of the batching quality. %; coke particles (≤3mm) account for 20% of the batching quality; industrial-grade corundum fine powder (≤0.073mm) account for 20% of the batching quality; recovery electric furnace magnesium aluminum material particles (≤3mm) account for 10% of the batching quality, Recycled electric furnace magnesium-aluminum material particles (≤1mm) account for 10% of the batching mass. Tar addition is extra, accounts for 17% of batching gross mass.

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Abstract

The invention provides a stemming utilizing a waste refractory material and a preparation method thereof. The stemming comprises the following raw materials: silicon carbide particles or fine powder, high-temperature fine asphalt powder, Jilin fine clay powder, coke particles, industrial grade corundum particles or fine powder, wherein recovered aluminum and magnesium material particles or fine powder used for an electric furnace is added; and tar serves as a bonding agent. The preparation method comprises the following steps of: preparing the raw materials according to a proportion; after uniformly stirring particle materials in a stirring machine for 1 to 10 minutes, adding 20 to 30 percent of the tar; stirring for 5 to 10 minutes; adding fine powder materials; stirring for 5 to 15 minutes; adding the remaining tar and stirring for 25 to 40 minutes; and extruding by using a stemming extruder and packaging. The stemming has the following advantages: high operating performance, low stemming sintering shrinkage, rapid sintering property, high scour resistance and slag iron erosiveness. The invention provides a way for regenerating and utilizing the waste refractory material, and contributes to saving resources and protecting environment.

Description

technical field [0001] The invention relates to recycling of waste and old refractory materials, in particular to a gun clay utilizing waste and old refractory materials and a preparation method thereof. Background technique [0002] Gun clay is one of the most important consumable materials in blast furnace operation. Its function is to fill in the tap hole when the blast furnace does not produce slag iron solution, so that the tap hole can maintain a sufficient depth. When tapping the blast furnace, the blast furnace mud in the tap hole is drilled, and the iron slag solution is discharged out of the furnace through the tunnel. The tap hole of the blast furnace must be repeatedly opened and filled every day. The average annual consumption of blast furnace mud in my country is 1,000 tons per blast furnace. There are more than 3,000 blast furnaces, and the demand for blast furnace clay is 3 million tons per year. [0003] The existing raw materials for gun clay mainly include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/12C04B35/56
CPCY02P10/20
Inventor 赵军刘兴平范咏莲张金艳周云鹏
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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