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No-baking bearing brick of hydraulic steel slag and its production process

A technology of steel slag and load-bearing bricks, which is applied in the field of new unfired load-bearing bricks and its production technology, can solve problems that have not been reported before, and achieve the effects of simple production process, excellent product quality and stable performance

Inactive Publication Date: 2006-08-02
LIANYUAN IRON & STEEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Domestic industrial waste residues currently used for remaining bricks are mainly fly ash, cinder, coal gangue, kerogen shale, coal oil residue, etc., but the direct application of steel slag as raw material is rare. The gelling material has not been reported so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 35% of blast furnace slag, 10% of converter slag, 15% of bottom slag, 8% of fly ash, 5% of crushed stone, and 12% of clay were crushed or wheel milled and sieved into particles with a particle size of 0.8mm. Granular aggregate, mixing, adding 15% additive-containing cementitious material to make a mixture, vibrating into bricks, placing them indoors for 10 days, humidifying them every 4 hours for natural curing in the first three days, and keeping them at 50°C after 3 days Under the condition of water temperature, hot water curing for 24 hours, stop heating, let it cool down to room temperature naturally, take it out and pile it up.

Embodiment 2

[0037] 22% of blast furnace slag, 11% of converter slag, 16% of bottom slag, 5% of fly ash, 6% of gravel, and 5% of clay were crushed or wheel milled and sieved into particles with a particle size of 0.5mm. Granular aggregate, mix, add 35% additive-containing cementitious material to make a mixture, vibrate and press into bricks, place it indoors for 7 days, humidify it every 3 hours for natural curing in the first three days, and keep it at 65°C after 3 days Under water temperature conditions, hot water curing for 20 hours, stop heating, cool to room temperature naturally, take out and stack.

Embodiment 3

[0039] 20% of blast furnace slag, 15% of converter slag, 20% of bottom slag, 4% of fly ash, 10% of crushed stone, and 11% of clay are crushed or wheel milled and sieved into particles with a particle size of 12mm aggregate, mixed with 20% additive-containing cementitious material to make a mixture, vibrated into adobe, placed indoors for 9 days, humidified every 2 hours for natural maintenance in the first three days, and kept in 80°C water temperature after 3 days Under the condition of hot water curing for 26 hours, stop heating, cool to room temperature naturally, take out and pile up.

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Abstract

The present invention discloses one kind one no-baking bearing brick of hydraulic steel slag and its production process. The no-baking bearing brick is produced with blast furnace slag 20-35 wt%, converter slag 10-15 wt%, bottom slag 15- 20 wt%, flyash 4-8 wt%, crushed stone 5-10 wt% and clay 5-12 wt%, and through separate crushing, rolling and sieving to form granular aggregate of certain granularity, mixing, adding cementing material to modify the characteristic of slag, adding water and stirring in semi-drying mode, forming via vibration, naturally curing, hot water curing and stacking. The no-baking bearing brick may be used to replace sintered solid clay brick and is environment friendly.

Description

technical field [0001] The present invention relates to a new type of fire-free load-bearing brick and its production process, in particular to the use of iron and steel slag as aggregate and cementitious material with hydraulic properties similar to modified steel slag cement and vibration molding, fire-free and steam-free technology Made hydraulic steel slag load-bearing brick and its production process. Background technique [0002] The production and application of traditional fired clay bricks wastes energy, pollutes the environment, destroys cultivated land, endangers the ecological balance and the harmonious relationship between man and nature, and it is urgent to completely change this method of taking soil and burning bricks. [0003] In the past ten years, through demonstration, promotion and legal construction, we have achieved remarkable results in eliminating and prohibiting the use of solid clay bricks within a limited time, accelerating the innovation of wall ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/04C04B18/14
CPCY02W30/91
Inventor 章奉山李决明罗治安周选伍曾高熊争鸣阮建波张华朱万军
Owner LIANYUAN IRON & STEEL GROUP CO LTD
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