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Nickel slag aerated concrete and preparation method thereof

A technology of aerated concrete and nickel slag, applied in the field of building materials, can solve the problems of land occupation of nickel-iron alloy slag, efficient resource utilization of environmental pollution, etc., to alleviate land occupation and environmental pollution, low water absorption, and promote development Effect

Inactive Publication Date: 2015-12-09
武汉天沭除尘设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a nickel slag aerated concrete and its preparation process, aiming to solve the problems of land occupation, environmental pollution and efficient resource utilization of nickel-iron alloy slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of nickel slag aerated concrete of the present invention, the design dry apparent density is 600kg / m 3 ;

[0034] The design ratio of each component according to the weight ratio is: cement 20wt%, nickel slag fine powder 30wt%, quicklime 15wt%, machine-made sand 27wt%, gypsum 2wt%, waste fine powder 6wt%;

[0035] After the components are mixed, stir them evenly in a mortar mixer, then add 65°C hot water with a water-to-material ratio of 0.57, 1.0% admixture, and stir quickly for 2 minutes; continue to add the aqueous solution prepared by 0.10wt% aluminum powder paste, and stir quickly for 20 seconds , quickly poured into the triple mold;

[0036] Put the mold in a curing box at 50°C for 6 hours, and after cutting, put it into an autoclave for curing under 175°C and 0.8 MPa for 10 hours; Dry in a blast drying oven at 95°C for 20 hours;

[0037] After drying, the average absolute dry apparent density of each block is 621.2kg / m 3 , The average compressive stren...

Embodiment 2

[0039] A kind of nickel slag aerated concrete of the present invention, the design dry apparent density is 600kg / m3 ;

[0040] The design ratio of each component according to the weight ratio is: cement 10wt%, nickel slag fine powder 50wt%, quicklime 15wt%, machine-made sand 19wt%, gypsum 1wt%, waste fine powder 5wt%;

[0041] After the components are mixed, stir them evenly in a mortar mixer, then add 65°C hot water with a water-to-material ratio of 0.57, 1.0% admixture, and stir quickly for 2 minutes; continue to add the aqueous solution prepared by 0.10wt% aluminum powder paste, and stir quickly for 20 seconds , quickly poured into the triple mold;

[0042] Put the mold in a curing box at 50°C for 6 hours, and after cutting, put it into an autoclave for curing under autoclaving at 185°C and 1.1MPa for 8 hours; Dry in a blast drying oven at 95°C for 20 hours;

[0043] After drying, the average absolute dry apparent density of each block is 615.4kg / m 3 , The average compre...

Embodiment 3

[0045] A kind of nickel slag aerated concrete of the present invention, the design dry apparent density is 600kg / m 3 ;

[0046] The design ratio of each component by weight is: 10wt% of cement, 45wt% of nickel slag powder, 20wt% of quicklime, 19wt% of machine-made sand, 2wt% of gypsum, and 4wt% of waste powder;

[0047] After the components are mixed, stir them evenly in a mortar mixer, then add 65°C hot water with a water-to-material ratio of 0.57, 1.0% admixture, and stir quickly for 2 minutes; continue to add the aqueous solution prepared by 0.10wt% aluminum powder paste, and stir quickly for 20 seconds , quickly poured into the triple mold;

[0048] Put the mold in a curing box at 50°C for 6 hours, and after cutting, put it into an autoclave for curing under autoclaving at 185°C and 1.1MPa for 8 hours; Dry in a blast drying oven at 95°C for 20 hours;

[0049] After drying, the average absolute dry apparent density of each block is 611.1kg / m 3 , The average compressive ...

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Abstract

The invention belongs to the field of building material, and more specifically relates to a nickel slag aerated concrete and a preparation method thereof. The nickel slag aerated concrete comprises following main ingredients: a siliceous material, a calcareous material, a foaming agent, an additive, a conditioning agent, and water; the siliceous material comprises nickel slag micro powder, machine-made sand, and a waste material micro powder; the calcareous material comprises cement and quick lime; the foaming agent is aluminum paste; the conditioning agent is dihydrate gypsum; and the additive comprises triethanolamine, oleic acid, and water. The nickel slag aerated concrete is high in strength, excellent in thermal insulation performance, and low in water absorption; a large amount of ferronickel alloy slag can be recycled; industrial solid waste resource utilization is realized; resources are saved; the ecological environment is protected; added economic value is high; and the preparation method accords with the development direction of novel building wall materials at present.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a nickel slag aerated concrete and a preparation process thereof. Background technique [0002] Nickel-iron alloy submerged arc slag is a kind of industrial waste slag discharged in the process of smelting metal nickel, and the slag content accounts for about 80% to 90% of the raw materials. With the increasing demand and production scale of nickel-iron alloy in my country, the accumulation of a large amount of nickel slag has become an important problem for the development of enterprises. Nickel slag is weak acid slag, with FeO, MgO, Al 2 o 3 , SiO 2 As the main component, the main mineral phases are pyroxene, forsterite, copper nickel iron sulfide, a small amount of tricalcium silicate, dicalcium silicate and other mineral phases and more amorphous substances, with certain gelling activity . Due to high temperature thermal history, cooling effect, chemical composition and...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/10C04B18/14
CPCY02W30/91
Inventor 田键申盛伟
Owner 武汉天沭除尘设备有限公司
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