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A kind of non-autoclaved aerated concrete prepared by using lithium slag and nickel slag and its preparation method

An air-entrained concrete and autoclave-free technology, which is applied in the field of air-entrained concrete, can solve the problems of lithium slag and nickel slag polluting the environment and high energy consumption, and achieve good repair and protection effects, reduce energy consumption, and increase viscosity.

Active Publication Date: 2017-09-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention firstly solves the problem of high energy consumption during high-temperature autoclaved curing of aerated concrete, and secondly solves the problem of lithium slag and nickel slag occupying land and polluting the environment

Method used

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  • A kind of non-autoclaved aerated concrete prepared by using lithium slag and nickel slag and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Autoclaved aerated concrete consists of the following components by mass: 80 parts of lithium slag powder, 20 parts of nickel slag powder, 10 parts of 6mol / l sodium hydroxide solution, 30 parts of water glass solution with a modulus of 1, and 0.05 parts of aluminum Powder composition, 0.02 parts of silicone amide.

[0048] The preparation of autoclaved air-entrained concrete includes the following steps:

[0049] 1) Measure lithium slag powder and nickel slag powder in proportion and dry mix for 10 minutes until uniform;

[0050] 2) adding sodium hydroxide solution and water glass solution to lithium slag powder and nickel slag mixed powder, controlling the liquid / solid ratio of sodium hydroxide solution and water glass solution to lithium slag and nickel slag mixed powder to 0.40;

[0051] 3) Add aluminum powder and silicone amide into the slurry in step 2) to foam, and stir for 3 minutes;

[0052] 4) Pour the slurry in step 3) into the mold, and cure at 60°C for 6 h...

Embodiment 2

[0055] Autoclaved aerated concrete consists of the following components by mass: 40 parts of lithium slag powder, 60 parts of nickel slag powder, 13 parts of 10mol / l sodium hydroxide solution, 12 parts of water glass solution with a modulus of 2, and 0.005 parts of aluminum powder , 0.005 parts of silicone amide composition.

[0056] The preparation of autoclaved air-entrained concrete includes the following steps:

[0057] 1) Measure lithium slag powder and nickel slag powder in proportion and dry mix them for 5 minutes until uniform;

[0058] 2) adding sodium hydroxide solution and water glass solution to lithium slag powder and nickel slag mixed powder, controlling the liquid / solid ratio of sodium hydroxide solution and water glass solution to lithium slag and nickel slag mixed powder to 0.25;

[0059] 3) Add aluminum powder and silicone amide into the slurry in step 2) to foam, and stir for 1 minute;

[0060] 4) Pour the slurry in step 3) into the mold, and cure at 80°C ...

Embodiment 3

[0063] Autoclaved aerated concrete consists of the following components by mass: 60 parts of lithium slag powder, 40 parts of nickel slag powder, 6 parts of 8mol / l sodium hydroxide solution, 24 parts of water glass solution with a modulus of 2, and 0.35 parts of aluminum powder Composition, 0.1 part of silicone amide.

[0064] The preparation of autoclaved air-entrained concrete includes the following steps:

[0065] 1) Measure lithium slag powder and nickel slag powder in proportion and dry mix them for 6 minutes until uniform;

[0066] 2) adding sodium hydroxide solution and water glass solution to lithium slag powder and nickel slag mixed powder, controlling the liquid / solid ratio of sodium hydroxide solution and water glass solution to lithium slag and nickel slag mixed powder to 0.3;

[0067] 3) Add aluminum powder and silicone amide into the slurry in step 2) to foam, and stir for 2 minutes;

[0068] 4) Pour the slurry in step 3) into the mold, and cure at 80°C for 4 h...

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Abstract

The invention relates to non-autoclaved aerated concrete prepared by utilizing lithium slag and nickel slag and a preparation method of the non-autoclaved aerated concrete. The aerated concrete is prepared from the following components in parts by weight: 40 to 80 parts of lithium slag powder, 20 to 60 parts of nickel slag powder, 6 to 20 parts of sodium hydroxide solution, 12 to 30 parts of sodium silicate solution, 0.005 to 0.05 part of aluminum powder, and 0.005 to 0.02 part of foam stabilizer. The preparation method comprises the steps of adding aluminum powder for foaming after uniformly stirring the lithium slag powder, nickel slag powder, sodium hydroxide solution, and sodium silicate solution in accordance with a certain proportion, cutting after curing for 4-6 hours at a temperature of 60 to 80 DEG C, stacking and curing for 7 days. The process is simple, industrial byproducts lithium slag and nickel slag are fully utilized, the high-temperature autoclave curing regime is not used in the whole process, the energy consumption is reduced, and the economic, environmental and social benefits are good.

Description

technical field [0001] The invention relates to the technical field of aerated concrete, in particular to a non-autoclaved aerated concrete prepared by using lithium slag and nickel slag and a preparation method thereof. Background technique [0002] At present, the industrial production of air-entrained concrete generally undergoes high-temperature autoclave curing in autoclaves. High-temperature autoclave curing is the most time-consuming and energy-consuming process in the production process of aerated concrete. Urgent problems faced by air-entrained concrete enterprises. [0003] Patent 201210082187.5 discloses a non-steam-cured concrete aerated insulation brick made of construction waste and its production method. The insulation brick is prepared from the following raw materials in parts by weight: 30-40 parts of cement, 20-30 parts of aggregate, CaO 8 ~10 parts, CaSO 4 3 to 5 parts, 3 to 5 parts of carboxamide, 3 to 5 parts of polyvinyl alcohol, 5 to 10 parts of hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26
CPCC04B28/26C04B2201/20C04B2201/32C04B2201/50C04B18/14C04B22/062C04B22/04C04B2103/48C04B38/02C04B24/42
Inventor 张亚梅李保亮施锦杰张培根孙正明
Owner SOUTHEAST UNIV
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