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High-doped industrial waste residue cement and preparation method thereof

A technology of industrial waste slag and cement, applied in the direction of cement production, etc., can solve the problems of small waste slag utilization, unstable quality, high cost, etc., and achieve the effects of avoiding resource waste and environmental pollution, easy promotion and application, and low production cost

Inactive Publication Date: 2017-09-26
SHAANXI BEIYUAN CHEM GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Calcium carbide slag, fly ash, coal gangue, and desulfurized gypsum are important components in the treatment of bulk industrial waste residues. Although there are many research reports at present, the main problems in cement production are as follows: (1) Limestone is mainly used as the main raw material , the cost is high, and it will cause waste of resources and environmental pollution. Although some enterprises use industrial waste such as calcium carbide slag to produce cement clinker, the incorporation is low and the energy consumption is high; (2) The strength of clinker produced by industrial waste Low, unstable quality, can not meet the use of large-scale construction projects
(3) Among the main raw materials used, various industrial waste residues cannot be effectively matched, there are fewer types of waste residues, the utilization amount of waste residues is small, and the quality is single, which cannot meet the treatment requirements, resulting in low utilization rates of various types of waste residues, and difficulty in popularization and application Big

Method used

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  • High-doped industrial waste residue cement and preparation method thereof
  • High-doped industrial waste residue cement and preparation method thereof
  • High-doped industrial waste residue cement and preparation method thereof

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preparation example Construction

[0038] The method for preparing high-mixed industrial waste slag cement of the present invention includes the following steps:

[0039] ① Preparation of raw meal: the mass ratio of 70-82% calcium carbide slag, 2-20% clay raw material (clay or clay ore), 2 to 5% siliceous correction raw material (silica or sandstone), 3-9 % Steel slag, 0-15% fly ash, 0-10% coal gangue and 0-15% slag are used to grind each component raw material through the raw meal grinding system and homogenize;

[0040] Among them, the water mass ratio of the raw meal is: calcium carbide slag ≤ 10%, clay raw material ≤ 10%, siliceous correction raw material ≤ 8%, steel slag ≤ 8%, fly ash ≤ 3%, coal gangue ≤ 8%, slag ≤ 6%.

[0041] ②Clinker calcination: Put the homogenized raw meal in step ① into the kiln, and use the mature new dry production process to calcine the mature meal;

[0042] To prepare high-mixed industrial waste slag cement, in step ②, the clinker uses the following quality control indicators to control...

Embodiment 1

[0052] The raw materials of each component are proportioned and ground, and the mass parts of each component are: 74% of calcium carbide slag, 6.6% of steel slag, 16% of clay raw materials, and 3.4% of siliceous raw materials.

[0053] Put the homogenized raw meal into the kiln, and use the new dry production process to calcinate the mature meal;

[0054] The sintered clinker with a mass ratio of 99.2 parts was mixed with 0.8 parts of desulfurized gypsum for cement grinding to produce cement.

Embodiment 2

[0056] The raw materials of each component are proportioned and ground, and the mass parts of each component are: 82% calcium carbide slag, 3% steel slag, 2% clay raw material, 3.5% siliceous raw material, and 9.5% slag.

[0057] Put the homogenized raw meal into the kiln, and use the new dry production process to calcinate the mature meal;

[0058] The sintered clinker with a mass ratio of 51.5 parts was mixed with 3.5 parts of desulfurized gypsum and 45 parts of slag, and cement was milled to produce cement.

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Abstract

The invention discloses high-doped industrial waste residue cement and a preparation method thereof. The high-doped industrial waste residue cement is prepared from raw materials: 70 to 82 percent of carbide slag, 2 to 20 percent of argillaceous raw materials, 2 to 5 percent of siliceous straightening raw material, 3 to 9 percent of steel slag, 0 to 15 percent of coal ash, 0 to 10 percent of coal gangue and 0 to 15 percent of furnace slag; and auxiliary materials: 0 to 50 percent of mixed materials and 0.8 to 7 percent of desulphurized gypsum. The carbide slag is used for completely substituting limestone, and by matching various industrial residues, the preparation standard of high-doped industrial waste residue cement can be satisfied; the production cost and the energy consumption are relatively low, and the resource waste and environmental pollution caused by the industrial residues can be avoided; and the produced clinker is high in strength, stable in quality and easy to popularize and use.

Description

Technical field [0001] The invention relates to the technical field of inorganic cementitious materials, in particular to a high-mixed industrial waste slag cement and a preparation method thereof. Background technique [0002] Cement is one of today's important building materials. It is made of silicate clinker made by mixing mineral materials such as limestone, iron powder and clay, and then adding cementitious materials to the clinker and grinding it. With the rapid development of my country's economy, the demand for cement has doubled. According to statistics, the national cement production reached 2.403 billion tons in 2016. [0003] At present, human beings have higher and higher requirements for their own living environment, and the construction of ecological civilization is also intensifying. The cement industry, as a cutting-edge industry for processing various industrial waste residues, plays a vital role in the utilization of industrial waste residues. [0004] Traditio...

Claims

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Application Information

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IPC IPC(8): C04B7/147C04B7/26C04B7/28C04B7/24
CPCC04B7/147C04B7/243Y02P40/10
Inventor 曾宪军史彦勇刘延财王奋中陈鹏熊磊张明乔陆军
Owner SHAANXI BEIYUAN CHEM GROUP
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