Slag based mesoporous material and preparation method thereof

Inactive Publication Date: 2014-11-26
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, the applicant did not find any literature or patent reports on the preparation of mesoporous materials using solid waste slag through a large number of literature searches and domestic and foreign patent novelty searches.

Method used

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  • Slag based mesoporous material and preparation method thereof
  • Slag based mesoporous material and preparation method thereof
  • Slag based mesoporous material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0051] Accurately weigh 600g of slag powder on this basis (100%); using the external mixing method, the sodium hydroxide content is 6% of the slag powder mass, and the ratio of water to slag powder mass is 0.28.

[0052] At room temperature, dissolve sodium hydroxide into water to form an aqueous sodium hydroxide solution. Pour the aqueous solution into a two-rotation two-speed pure slurry mixer, then add slag powder for mixing to form a uniform slurry, and put the slurry into a 31.5mm×31.5mm×50mm steel triple mold for forming, and place the triple mold Put it into a plastic film sealed bag, cure for 6 hours in a thermostat at 80°C, remove the mold after cooling, and cure for 1 day at room temperature to obtain a test block of slag-based cementitious material, and its compressive strength is determined to be 41MPa.

[0053] Put the slag-based cementing material test block into a horse boiling furnace, heat it up to 450°C at a heating rate of 5°C / min, keep it for 4h, let it cool nat...

Embodiment 2

[0057] Accurately weigh 600g of slag powder on this basis (100%); using the external mixing method, the sodium hydroxide content is 6% of the slag powder mass, the pore enhancer glucose is 3% of the slag mass, water and The mass ratio of slag powder is 0.24. At room temperature, dissolve sodium hydroxide in water to form an aqueous sodium hydroxide solution; dissolve solid glucose into water to form an aqueous glucose solution. Pour the sodium hydroxide aqueous solution and the glucose aqueous solution into the double-rotation double-speed pure slurry mixer in turn, then add the slag powder for mixing to form a uniformly mixed slurry, and fill the slurry into a 31.5mm×31.5mm×50mm steel triple Molding in the mold, put the triple mold into a plastic film sealed bag, and cure for 6 hours at 80°C in a constant temperature box, cool and remove the mold, and cure for 1 day at room temperature to obtain a test block of slag-based cementitious material, and test its compressive strengt...

Embodiment 3

[0061] Accurately weigh 600g of slag powder on this basis (100%); using the external mixing method, the sodium hydroxide content is 6% of the slag powder mass, the pore enhancer glucose is 6% of the slag mass, water and The mass ratio of slag powder is 0.24. At room temperature, dissolve solid sodium hydroxide into water to form an aqueous sodium hydroxide solution. The solid glucose is dissolved in water to form an aqueous glucose solution. Add the sodium hydroxide aqueous solution and the glucose aqueous solution to the two-rotation two-speed pure slurry mixer in turn, and then add the slag powder for mixing to form a uniformly mixed slurry, and put the slurry into a 31.5mm×31.5mm×50mm steel triple mold In the middle molding, the triple mold is placed in a plastic film sealed bag, cured for 6 hours at 80°C in a thermostat, cooled and removed, and cured at room temperature for 1 day to obtain a slag-based cemented test block. The compressive strength of the test block is 54.6...

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Abstract

The invention discloses a slag based mesoporous material and a preparation method thereof; the slag based mesoporous material is prepared by putting raw material slag, sodium hydroxide water and pore increasing agent glucose into a mixing device for mixing, using a die for molding, curing, and burning; and taking the adding quantity of the slag mass as a basis, the adding quantity of the sodium hydroxide is 6% of the slag mass, the adding quantity of the pore increasing agent glucose is 3%-6% of the slag mass, and the ratio of water adding quantity to slag mass is 0.24-0.28. Compared with a sample free of the pore increasing agent, after addition of the pore increasing agent in an optimum adding amount, the mesopore volume of a sample is increased by 102.63%; slag can be completely used in one time, the slag based mesoporous material with high added value can be obtained, the whole process is simple, no slag treatment is needed, no three wastes is discharged, the slag based mesoporous material is green and environmentally-friendly, and controllable preparation of the slag based mesoporous material can be realized.

Description

Technical field [0001] The invention belongs to the field of solid waste resource recycling and preparation of new materials, and specifically relates to a slag-based mesoporous material and a preparation method thereof. Background technique [0002] Blast furnace slag is a kind of waste slag discharged from the blast furnace when smelting pig iron. Usually, about 0.3-0.9 tons of blast furnace slag is emitted for every 1 ton of pig iron produced. In 2012, the output of pig iron in China reached 658 million tons, and the discharged slag was 1.97-5.9 100 million tons. At present, slag is mainly used to produce slag cement or as an admixture of cement and concrete to produce slag powder, to produce inorganic coatings, to be used as a sewage treatment agent, to produce calcium silicate fertilizer, and as a glass raw material [1] . In recent years, blast furnace slag has also been used to prepare alkali-activated slag-based geopolymers [2-4] . In addition, Zhang Yaojun [5,6] Chinese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00C04B38/02B01J32/00C04B18/12
CPCY02W30/91
Inventor 张耀君康乐张力张科王磊磊杨梦阳柴倩
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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