Aerated concrete block produced by dump-leached slags

A technology of aerated concrete and heap leaching slag, applied in the field of aerated concrete blocks and new wall materials, can solve the problems of easy formation of dust, landslides, land occupation, environmental threats, etc., and achieves low cost, reduced usage, The effect of reducing production costs

Active Publication Date: 2014-05-28
广西建筑材料科学研究设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heap leaching slag separated during mining and processing is stored in large quantities, which not only occupies land, but also easily causes disasters such as dust and landslides, posing a threat to the environment

Method used

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  • Aerated concrete block produced by dump-leached slags

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The manufacture method of the aerated concrete block produced by heap leaching slag comprises the following steps:

[0031] 1. Take lateritic nickel ore heap leaching slag, quicklime, and gypsum, and grind them into powders with a particle size of less than 0.08mm;

[0032] 2. Take raw materials respectively by following parts by weight: laterite nickel ore heap leaching residue 500kg, quicklime 150kg, cement 200kg, gypsum 10kg, aluminum powder 1.2kg, polycarboxylate superplasticizer 15kg;

[0033] 3. Add laterite nickel ore heap leaching slag and gypsum into the ball mill, add an appropriate amount of water for water milling, and grind until the particle size is less than 0.08mm, and control the fluidity of the slurry to 280mm;

[0034] 4. Put the slurry in the slurry mixer, add polycarboxylate high-efficiency water reducer, stir well, so that the fluidity of the slurry reaches 400mm; pour it into the pouring mixer, continue stirring for 1 minute, add cement, and stir ...

Embodiment 2

[0040] The manufacture method of the aerated concrete block produced by heap leaching slag comprises the following steps:

[0041] 1. Take lateritic nickel ore heap leaching slag, quicklime, and gypsum, and grind them into powders with a particle size of less than 0.08 mm;

[0042]2. Take the raw materials respectively by the following parts by weight: laterite nickel ore heap leaching residue 200kg, quicklime 80kg, cement 50kg, gypsum 3kg, aluminum powder 0.4kg, polycarboxylate superplasticizer 8kg;

[0043] 3. Add laterite nickel ore heap leaching slag and gypsum into the ball mill, add an appropriate amount of water for water milling, and grind until the particle size is less than 0.08mm, and control the fluidity of the slurry to 260mm;

[0044] 4. Put the slurry in the slurry mixer, add polycarboxylate high-efficiency water reducer, and stir well, so that the fluidity of the slurry reaches 370mm; pour it into the pouring mixer, continue stirring for 1 minute, add cement, a...

Embodiment 3

[0050] The manufacture method of the aerated concrete block produced by heap leaching slag comprises the following steps:

[0051] 1. Take lateritic nickel ore heap leaching slag, quicklime, and gypsum, and grind them into powders with a particle size of less than 0.08 mm;

[0052] 2. Take the raw materials respectively by the following parts by weight: laterite nickel ore heap leaching residue 400kg, quicklime 120kg, cement 100kg, gypsum 6kg, aluminum powder 0.7kg, polycarboxylate superplasticizer 12kg;

[0053] 3. Add lateritic nickel ore heap leaching slag and gypsum into the ball mill, add an appropriate amount of water for water milling, and grind until the particle size is less than 0.08mm, and control the fluidity of the slurry to 270mm;

[0054] 4. Put the slurry in the slurry mixer, add polycarboxylate high-efficiency water reducer, stir well, so that the fluidity of the slurry reaches 380mm; pour it into the pouring mixer, continue stirring for 1 minute, add cement, ...

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Abstract

The invention relates to an aerated concrete block produced by dump-leached slags. The block comprises the following raw materials in parts by weight: 200 to 500 parts of dump-leached slags, 80 to 150 parts of quick lime, 50 to 200 parts of cement, 3 to 10 parts of gypsum, 0.4 to 1.2 parts of aluminium powder and 8 to 15 parts of superplasticizer, wherein the dump-leached slags are waste residues formed after silicate minerals are processed by acid. The aerated concrete block has the advantages of light weight, high strength, heat preservation, heat insulation and the like, utilizes wastes, is environmental-friendly, saves resources and is a green building material with excellent performance.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a novel wall material, in particular to an aerated concrete block produced by heap leaching slag. Background technique [0002] Aerated concrete block is a porous block wall material made of cement, lime, aluminum powder, etc., through foaming, autoclaving and other processes. It has light weight, heat preservation, heat insulation, sound insulation, earthquake resistance, fire prevention , can be sawed, planed, nailed, and easy to construct, it is widely used as non-load-bearing interior and exterior walls. Since Sweden began to industrialize the production of aerated concrete products in 1929, aerated concrete products have a history of more than 80 years. my country is an earlier country in the production and application of aerated concrete. In 1965, the first autoclaved aerated concrete plant. [0003] In recent years, with the increasing innovation of wall materials in our c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/10C04B18/14
CPCY02W30/91
Inventor 杨志明江家齐曹国华冯正茂何福强江万里陈霏
Owner 广西建筑材料科学研究设计院有限公司
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