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Aerated concrete building block produced by heavy metal-removed manganese carbonate tailing and manufacturing method thereof

A technology of manganese carbonate tailings and aerated concrete, which is applied in building construction, climate sustainability, building components, etc., can solve problems such as pollution, and achieve the effect of saving mineral resources, saving resources and saving land resources.

Active Publication Date: 2010-10-20
HUBEI SHENGRONG ENVIRONMENTAL PROTECTION ENERGY SAVING SCI & TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to develop a kind of air-entrained concrete block and manufacture method thereof that utilizes the manganese carbonate tailings production after removing heavy metal, and this method utilizes comprehensive sorting technology to reclaim about 20% in the manganese carbonate slag and can reach ore grade ( manganese carbonate concentrate and iron and other heavy metals, and then the secondary manganese carbonate tailings remaining after comprehensive sorting are combined with other mineral raw materials in the formula to produce aerated concrete blocks. Fundamentally solve the pollution problem of manganese carbonate slag to the environment, make full and reasonable use of resources in manganese carbonate slag, save land, improve the comprehensive recycling value of manganese carbonate slag, and realize zero discharge of manganese carbonate slag

Method used

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  • Aerated concrete building block produced by heavy metal-removed manganese carbonate tailing and manufacturing method thereof
  • Aerated concrete building block produced by heavy metal-removed manganese carbonate tailing and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0034] according to figure 1 As shown, a kind of aerated concrete block produced by manganese carbonate tailings after removing heavy metals, its raw material component weight percentage is as follows:

[0035] Manganese carbonate tailings after removal of heavy metals 30

[0036] Sand 46

[0037] lime 16

[0038] cement 8

[0039] Aluminum powder 0.003.

[0040] A method for producing aerated concrete block by using manganese carbonate tailings after heavy metal removal, the steps are as follows:

[0041] (1) The electrolytic manganese carbonate slag is sequentially screened, diluted and stirred, comprehensively sorted by using the difference in specific magnetic susceptibility coefficients of various substances in the manganese carbonate tailings, concentrate dehydration and drying, and concentrate packaging steps to obtain the ore grade concentrate and manganese carbonate secondary tailings after removing heavy metals;

[0042] (2) Mix one reaction

[0043]The mangan...

Embodiment 2

[0051] according to figure 1 As shown, a kind of aerated concrete block produced by manganese carbonate tailings after removing heavy metals, its raw material component weight percentage is as follows:

[0052] Manganese carbonate tailings after removal of heavy metals 50

[0053] Sand 28

[0054] lime 13

[0055] cement 9

[0056] Aluminum powder 0.01

[0057] A method for producing aerated concrete block by using manganese carbonate tailings after heavy metal removal, the steps are as follows:

[0058] (1) The electrolytic manganese carbonate slag is sequentially screened, diluted and stirred, comprehensively sorted by using the difference in specific magnetic susceptibility coefficients of various substances in the manganese carbonate tailings, concentrate dehydration and drying, and concentrate packaging steps to obtain the ore grade concentrate and manganese carbonate secondary tailings after removing heavy metals;

[0059] (2) Mix one reaction

[0060] The mangane...

Embodiment 3

[0068] according to figure 1 As shown, a kind of aerated concrete block produced by manganese carbonate tailings after removing heavy metals, its raw material component weight percentage is as follows:

[0069] Manganese carbonate tailings after removal of heavy metals 70

[0070] lime 17

[0071] cement 13

[0072] Aluminum powder 0.02

[0073] A method for producing aerated concrete block by using manganese carbonate tailings after heavy metal removal, the steps are as follows:

[0074] (1) The electrolytic manganese carbonate slag is sequentially screened, diluted and stirred, comprehensively sorted by using the difference in specific magnetic susceptibility coefficients of various substances in the manganese carbonate tailings, concentrate dehydration and drying, and concentrate packaging steps to obtain the ore grade concentrate and manganese carbonate secondary tailings after removing heavy metals;

[0075] (2) Mix one reaction

[0076] The manganese carbonate seco...

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Abstract

The invention discloses an aerated concrete building block produced by heavy metal-removed manganese carbonate tailing and a manufacturing method thereof. The aerated concrete building block comprises the following components in percentage by weight: 10-70% of heavy metal-removed manganese carbonate tailing, 0-70% of sand, 5-25% of lime, 4-20% of cement and 0.005-0.1% of aluminum powder. The invention has the advantages that according to the formula and the method of the invention, manganese carbonate concentrate which can reach mine entering grade in the manganese carbonate slag can be obtained, thus saving mineral product resources; meanwhile, the aerated concrete building block produced by heavy metal removed secondary manganese carbonate tailing conforms to the national standard (GB11968) and can reach the standard of qualified products of each grade or high-class products in the standard.

Description

technical field [0001] The invention relates to the technical field of industrial tailings treatment, in particular to an aerated concrete block produced by utilizing manganese carbonate tailings after removing heavy metals and a manufacturing method thereof. Background technique [0002] my country's electrolytic manganese industry mainly uses manganese carbonate as raw material, and every ton of manganese metal extracted will produce 7-8 tons of manganese carbonate slag. At present, the annual discharge of manganese carbonate slag in my country exceeds 2 million tons, and the utilization rate is extremely low. For a long time, there is no comprehensive and effective way to deal with manganese slag. Basically, it adopts the method of accumulation or landfill, which increases the land resources occupied year by year, pollutes groundwater sources, and is not conducive to the development of circular economy and the improvement of resource utilization. [0003] CN1837120A discl...

Claims

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Application Information

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IPC IPC(8): E04C1/00C04B28/00C04B18/04
CPCC04B2103/0012C04B28/10C04B2111/40C04B2111/10C04B28/02Y02W30/91C04B14/06C04B18/12C04B22/04C04B22/064C04B7/00C04B14/26
Inventor 李家珍张晓年张莹涂婕
Owner HUBEI SHENGRONG ENVIRONMENTAL PROTECTION ENERGY SAVING SCI & TECH LTD
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