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Composite cement

A technology of composite cement and cement clinker, applied in the field of composite cement, can solve problems such as endangering human health and aluminum industry pollution

Inactive Publication Date: 2008-09-17
周士合
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite Portland cement of the present invention utilizes the waste red mud that pollutes the environment produced by industrial aluminum plants, solves environmental problems that seriously endanger human health, and forms a resource-saving growth mode and a healthy and civilized consumption pattern in the whole society, making it Severe pollution problem in aluminum industry solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Red mud: 50 parts Silicon slag: 10 parts

[0008] Cement clinker: 20 parts Phosphogypsum: 5 parts

[0009] strength

[0010] 3 days Anti-bending: 3.89MPa Anti-compression: 22.12MPa

[0011] 28 days Anti-bending: 8.2MPa Compressive: 47.5MPa

[0012] In line with the national standard No. 425.

Embodiment 2

[0014] Red mud: 30 parts Fly ash: 20 parts

[0015] Cement clinker: 15 parts Silicon slag: 10 parts

[0016] Phosphogypsum: 10 parts

[0017] strength

[0018] 3 days Anti-bending: 3.67MPa Anti-compression: 20.0MPa

[0019] 28 days Anti-bending: 7.9MPa Compressive: 43.5MPa

[0020] In line with the national standard No. 425.

Embodiment 3

[0022] Red mud: 75 parts Phosphogypsum: 3 parts

[0023] Cement clinker: 10 parts Silicon slag: 7 parts

[0024] strength

[0025] 3 days Anti-bending: 4.0MPa Compressive: 27.0MPa

[0026] 28 days Anti-bending: 8.9MPa Anti-compression: 49.2MPa

[0027] In line with the national standard No. 425.

[0028] The cement produced by the present invention without calcining red mud and cement clinker is red in color and is not suitable for general use. Therefore, the color must be changed to gray-black or cyan, and the color will not fade.

[0029] Its processing scheme is to add the following raw materials of each weight distribution ratio in above-mentioned each embodiment and get final product:

[0030] 1. Phthalocyanine blue 0.2-0.5 parts Acrylic acid 1-3 parts

[0031] MF 0.1-0.5 parts Aluminum stearate 0.1-0.4

[0032] 2. 3-5 parts of iron black, 1-3 parts of acrylic acid

[0033] 3. Brilliant red 0.1-0.4 parts Acrylic acid 1-3 parts

[0034] 4. 2-4 parts of high-pigment...

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Abstract

The invention discloses composite cement, which relates to a building material and is made from the following raw materials in weight proportions: red mud 10-70 parts, cement clinker 10-15 parts and sulfate 15-40 parts. The sulfate may be the mixture of more than one selected from phosphogypsum, coal ash, silica slag and sodium silicoaluminate. The weight proportions of components of the sulfate mixture are as follows: phosphogypsum 2-10 parts, coal ash 5-20 parts, silica slag 5-15 parts and sodium silicoaluminate 3-10 parts. The invention is used for cement production.

Description

Technical field: [0001] The invention relates to a building material, especially a composite cement. Background technique: [0002] At present, the main raw material of cement production at home and abroad is limestone. The production of cement from limestone must be calcined at high temperature and then ground. Red mud is highly alkaline mud (PH10-14) produced during the production of alumina. Its chemical components are dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrate, sodium sulfide and other substances. It belongs to industrial hazardous waste residue. Our country produces tens of millions of tons of red mud every year, and the utilization rate is almost zero. Now most of them are stacked in the open air, causing environmental pollution. Invention content: [0003] The purpose of the present invention is to provide a low-cost and environmentally friendly composite cement. The technical solution of the present invention is a composite cement, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/14C04B7/02
CPCC04B28/143Y02W30/91C04B7/02C04B14/041C04B18/0409C04B18/08
Inventor 周士合
Owner 周士合
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