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Lightweight and high-strength ceramsite prepared by taking slate as raw material, and preparation method thereof

A high-strength ceramsite and slate technology, which is applied to clay products, ceramic products, and other household appliances, can solve the problems of ceramsite products such as high bulk density, high water absorption rate, and low cylinder compressive strength, so as to improve the use value, The effect of lowering the firing temperature and improving the quality of ceramsite

Active Publication Date: 2019-12-31
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The invention provides a light-weight high-strength ceramsite prepared from slate as a raw material and a preparation method thereof, which not only solve the problems of high bulk density, high water absorption rate and low cylinder compressive strength of ceramsite products, but also can reduce slate tailings Accumulation occupies a large amount of land and reduces serious threats to ecology, the environment and human health

Method used

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  • Lightweight and high-strength ceramsite prepared by taking slate as raw material, and preparation method thereof
  • Lightweight and high-strength ceramsite prepared by taking slate as raw material, and preparation method thereof
  • Lightweight and high-strength ceramsite prepared by taking slate as raw material, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1 of the present invention provides a kind of lightweight high-strength ceramsite with slate as raw material, and its raw material ratio according to mass percentage is:

[0032]

[0033] In this embodiment 1, the light high-strength ceramsite with slate as raw material, the chemical composition and content of the raw material are shown in Table 5 below:

[0034] The raw material chemical composition and content (%) involved in table 5 embodiment 1

[0035]

[0036]

[0037] Its manufacturing method is implemented according to the following steps:

[0038] (1) Weigh 80% of slate, 10% of fly ash, 5% of magnesium metal slag, 3% of oil shale semi-coke, and 2% of dolomite according to mass percentage, and crush and grind the slate to 200 mesh, the metal magnesium slag, oil shale semi-coke and dolomite are ground to 200 mesh, and the above raw materials are mixed to obtain a mixture;

[0039] (2) Put the mixture into the intensive mixer, spray water on ...

Embodiment 2

[0045] Embodiment 2 of the present invention provides a kind of lightweight high-strength ceramsite with slate as raw material, and its raw material ratio according to mass percentage is:

[0046]

[0047]

[0048] In this embodiment 2, the light high-strength ceramsite with slate as raw material, the chemical composition and content of the raw material are shown in Table 6 below:

[0049] The raw material chemical composition and content (%) involved in table 6 embodiment 2

[0050] chemical composition slate fly ash Magnesium slag Oil Shale Semi-coke dolomite Total SiO 2

49.35 8.22 1.36 2.44 61.37 Al 2 o 3

9.10 5.96 0.08 0.70 15.84 Fe 2 o 3

4.12 1.10 0.20 0.50 5.92 MgO 1.32 0.13 0.27 0.05 1.77 CaO 0.13 0.92 3.05 0.07 1.12 5.29 K 2 o

2.31 0.23 0.00 0.14 2.68 Na 2 o

1.54 0.07 0.00 0.05 1.66 P 2 o 5

0.04 0.09 0.00 0.03 0.16 Mn...

Embodiment 3

[0059] Embodiment 3 of the present invention provides a kind of lightweight high-strength ceramsite with slate as raw material, and its raw material ratio according to mass percentage is:

[0060]

[0061] In this embodiment 3, the light high-strength ceramsite with slate as raw material, the chemical composition and content of the raw material are shown in Table 7 below:

[0062] The raw material chemical composition and content (%) involved in table 7 embodiment 3

[0063] chemical composition slate fly ash Magnesium slag Oil Shale Semi-coke dolomite Total SiO 2

42.32 12.79 1.36 2.44 58.91 Al 2 o 3

7.80 9.27 0.08 0.70 17.85 Fe 2 o 3

3.53 1.71 0.20 0.50 5.94 MgO 1.13 0.20 0.27 0.05 1.64 CaO 0.11 1.41 3.05 0.07 1.12 5.76 K 2 o

1.98 0.36 0.00 0.14 2.48 Na 2 o

1.32 0.11 0.00 0.05 1.47 P 2 o 5

0.03 0.14 0.00 0.03 0.21 MnO 1.13 ...

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Abstract

The invention discloses a lightweight and high-strength ceramsite prepared by taking slate as a raw material, and a preparation method thereof, and relates to the technical field of preparation of building materials. The lightweight and high-strength ceramsite is prepared from the raw materials by mass percent: 50% -90% of slate, 5% -30% of fly ash, 2% -6% of metal magnesium slag, 1% -10% of oil shale semicoke and 1% -4% of dolomite. The fly ash added into the lightweight and high-strength ceramsite taking slate as the raw material can reduce SiOs as well as increase the Al2O3 content; the occupation on a large amount of land by the slate tailings piling can be reduced, thereby relieving the serious threat on the ecology, the environment and the human health, and further solving the problem that the ceramsite product on the former market is high in piling density, high in water absorption and low in cylinder pressure strength; a value in use of the slate taiings, the metal magnesium slag, the oil shale semicoke and flyash are improved, the solid wastes are changed into valuables, and the lightweight and high-strength ceramsite is suitable for the industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation of building materials, in particular to a light-weight high-strength ceramsite prepared from slate as a raw material and a preparation method thereof. Background technique [0002] As a light aggregate, ceramsite has the characteristics of low density, high strength, high water absorption, heat preservation, heat insulation, shock resistance, and fire resistance. It can also be used as a medium for soilless cultivation in agriculture and gardens, as well as building materials such as bridge decks, hollow non-load-bearing blocks or concrete components. In the prior art, the known ceramsite generally uses clay, biological sludge, etc. as the main raw materials, and is formed by high-temperature roasting and puffing. Due to the limited source of raw materials, the known ceramsite products still have serious environmental pollution in the actual preparation process. There are many problems such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/132C04B33/135C04B33/138
CPCC04B33/1324C04B33/1328C04B33/135C04B33/1352C04B33/138C04B38/009C04B38/02C04B2235/321C04B38/0067Y02P40/60
Inventor 路萍周立发焦尊生张亚芹高春云郝昱宇刘伟刚罗婷婷郭京哲李阳阳陈永振巨浩波白勇
Owner NORTHWEST UNIV(CN)
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