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Steel slag baking-free brick

A technology for unburned bricks and steel slag, which is applied in the field of steel slag unburned bricks to achieve the effects of reducing accumulation, reducing environmental pollution and reducing costs

Inactive Publication Date: 2008-08-27
山东济钢泰航合金有限公司
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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 provide a steel slag burn-free brick for the defects of the above-mentioned steel slag bricks, such as long maintenance time, long production cycle, and need for thermal drying. This method solves the above-mentioned problems, reduces the production cycle, and does not require sintering , does not require heat energy, saves time, improves productivity, reduces costs, and more importantly, it can alleviate the environmental pollution caused by steel slag and the greenhouse effect caused by carbon dioxide emissions

Method used

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  • Steel slag baking-free brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 10 parts of steel slag sand, 40 parts of steel slag powder, 50 parts of blast furnace slag, 5 parts of lime, add 10 parts of water, mix evenly with a mixer, feed the material to the brick pressing mold, press it with a brick pressing machine, and put the pressed The bricks are stored in the warehouse under natural conditions for 3 days, and the cured bricks are placed in a high-pressure container. At room temperature, CO 2 Gas (purity is 20%), the aging pressure is 0.1MPa, and the aging time is 36h. The average compressive strength of the obtained steel slag unburned brick is: 15MPa, and the strength of 80% of the products can reach 18MPa. After boiling for 3h, Inspection after pressure steaming for 3 hours, the stability is all qualified. See the table below for various performance data.

[0030] project

[0031] C K

Embodiment 2

[0033] Take 10 parts of steel slag sand, 40 parts of steel slag powder, 50 parts of blast furnace slag, 5 parts of lime, add 10 parts of water, mix evenly with a mixer, feed the material to the brick pressing mold, press it with a brick pressing machine, and put the pressed The bricks are stored in the warehouse under natural conditions for 3 days, and the cured bricks are placed in a high-pressure container. At room temperature, CO 2 Gas (purity is 90%), the aging pressure is 0.1MPa, the aging time is 3h, the average compressive strength of the obtained steel slag unburned brick is: 20MPa, wherein the strength of 50% of the product can reach 25MPa, after boiling for 3h, Inspection after pressure steaming for 3 hours, the stability is all qualified. See the table below for various performance data.

[0034] project

[0035] power level

Embodiment 3

[0037] Take 10 parts of steel slag sand, 40 parts of steel slag powder, 60 parts of blast furnace slag, 5 parts of lime, add 10 parts of water, mix evenly with a mixer, feed the material to the brick press mold, press it with a brick press, and put the pressed The bricks are stored in the warehouse under natural conditions for 3 days, and the cured bricks are placed in a high-pressure container. At room temperature, CO 2 Gas (purity is 20%), the aging pressure is 0.5MPa, and the aging time is 20h, the average compressive strength of the obtained steel slag unburned brick is: 15MPa, and the strength of 80% of the products can reach 18MPa, after boiling for 3h, Inspection after pressure steaming for 3 hours, the stability is all qualified. See the table below for various performance data.

[0038] project

[0039] thickness

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Abstract

The invention relates to a steel slag free sintering brick, belonging to the recycle technical field of steel slag, wherein the materials of the free sintering brick are steel slag stand, steel slag powder, blast furnace slag and lime, and the production method of the steel slag free sintering brick comprises adding water with weighted materials, mixing, pressing and shaping via a brick press, maintaining and aging to obtain final product of steel slag free sintering brick. The inventionc can shorten production period, eliminate sintering, eliminate heat energy, save time, improve yield, reduce cost and release the environment pollution of steel slag and greenhouse effect of carbon dioxide.

Description

technical field [0001] The invention belongs to the field of steel slag recycling, in particular to a steel slag burn-free brick. Background technique [0002] Steel slag is the slag discharged during the steelmaking process, mainly the oxides formed after the oxidation of various elements in the metal charge, the eroded furnace lining and repair materials, the impurities brought in by the metal charge, and the smelting of different steel types. Limestone, dolomite, iron ore, fluorite and other slagging materials are specially added. Steel slag accounts for 15-20% of solid waste in the iron and steel industry, and about 180Kg of steel slag will be discharged for every ton of crude steel produced. There are more than 200 million tons of steel slag accumulated in my country, covering an area of ​​more than 10,000 mu. A large amount of steel slag not only invades the land, Moreover, the steel slag is easily weathered into alkaline dust during the stacking process, causing serio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B14/06C04B18/14
CPCC04B28/18C04B2111/00017Y02W30/91C04B18/141C04B18/142C04B38/103C04B40/0071
Inventor 罗时政刘富增亓立峰马晓健郑文军常均王玺胡玉芬张树阳陈东玫庄健李新国姜德俊宋青伟刘福运张仁安
Owner 山东济钢泰航合金有限公司
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