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Lightweight high-strength ceramsite prepared from slate as raw material and preparation method thereof

A technology of high-strength ceramsite and slate, applied to ceramic products, clay products, and other household appliances, can solve the problems of high water absorption, low cylinder compressive strength, high bulk density of ceramsite products, etc., and reduce the firing temperature , Improve the quality of ceramsite, improve the effect of using value

Active Publication Date: 2021-08-20
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 high-strength ceramsite prepared from slate as raw material and preparation method thereof
  • Lightweight high-strength ceramsite prepared from slate as raw material and preparation method thereof
  • Lightweight high-strength ceramsite prepared from slate as raw material and preparation method thereof

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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 light-weight high-strength ceramsite prepared from slate as a raw material and a preparation method thereof, and relates to the technical field of preparation of building materials. According to mass percentages, the ratio of raw materials is 50%-90% of slate, pulverized coal Ash 5%‑30%, metal magnesium slag 2%‑6%, oil shale semi-coke 1%‑10%, dolomite 1%‑4%. In the present invention, the fly ash added in the light high-strength ceramsite with slate as raw material can reduce the SiO 2 content can increase Al 2 o 3 content, not only can reduce the occupation of a large amount of land by the accumulation of slate tailings, reduce their serious threats to ecology, the environment and human health, but also solve the problems of high bulk density, high water absorption and low Problems such as cylinder compressive strength have improved the utilization value of slate tailings, metal magnesium slag, oil shale semi-coke and fly ash, and turned solid waste into treasure, which is suitable for 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 Patents(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
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