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A kind of green environmental protection cement and preparation method thereof

A green and environmentally friendly cement and non-ferrous metal technology, applied in cement production, sustainable waste treatment, solid waste management, etc., can solve the problems of high-quality cement use, poor impermeability, low strength, etc., to achieve content reduction and flexural resistance Strong strength and high production efficiency

Active Publication Date: 2022-07-12
DENGZHOU CHINA UNITED CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing cement made from industrial solid waste still has problems such as low strength after solidification, easy cracking, and poor impermeability, and is usually difficult to use as high-quality cement

Method used

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  • A kind of green environmental protection cement and preparation method thereof
  • A kind of green environmental protection cement and preparation method thereof
  • A kind of green environmental protection cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Adopt the following preparation method to prepare the green environmental protection cement according to the present application:

[0053] (1) mixing and grinding 8.0kg of shale, 5.4kg of non-ferrous metal slag, and 0.5kg of sulfuric acid slag, calcined at 200°C for 27 minutes, and cooled to room temperature to obtain calcined material;

[0054] (2) the limestone of 86.4kg, the spinel of 4.1kg, the dolomite of 4.1kg are mixed and ground, and then mixed with the pre-sintered material to obtain raw meal;

[0055] (3) calcining the raw meal at 1320° C. for 32 minutes, and cooling to room temperature to obtain clinker; and

[0056] (4) Get 100kg of the clinker mixed with 4.3kg of gypsum and 1.7kg of anorthite and grind evenly.

[0057] Thus, the green cement according to the present application is prepared.

Embodiment 2

[0059] Adopt the following preparation method to prepare the green environmental protection cement according to the present application:

[0060] (1) mixing and grinding 7.5kg of shale, 5.5kg of non-ferrous metal slag and 0.4kg of sulfuric acid slag, calcined at 200°C for 25 minutes, and cooled to room temperature to obtain calcined material;

[0061] (2) the limestone of 85.5kg, the spinel of 3.8kg, the dolomite of 4.2kg are mixed and ground, and then mixed with the pre-sintered material to obtain raw meal;

[0062](3) calcining the raw meal at 1280° C. for 34 minutes, and cooling to room temperature to obtain clinker; and

[0063] (4) Get 100kg of the clinker mixed with 4.3kg of gypsum and 1.7kg of anorthite and grind evenly.

[0064] Thus, the green cement according to the present application is prepared.

Embodiment 3

[0066] Adopt the following preparation method to prepare the green environmental protection cement according to the present application:

[0067] (1) mixing and grinding 7.6kg of shale, 5.7kg of non-ferrous metal slag and 0.5kg of sulfuric acid slag, calcined for 25 minutes at 210°C, and cooled to room temperature to obtain calcined material;

[0068] (2) the limestone of 86.5kg, the spinel of 4.7kg, the dolomite of 3.6kg are mixed and pulverized, and then mixed with the pre-sintered material to obtain raw meal;

[0069] (3) calcining the raw meal at 1350° C. for 31 minutes, and cooling to room temperature to obtain clinker; and

[0070] (4) get 100kg of described clinker mixed with 4.0kg of gypsum and 2.0kg of anorthite and grind evenly.

[0071] Thus, the green cement according to the present application is prepared.

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Abstract

The present application discloses a kind of green environmental protection cement and a preparation method thereof. The green environmental protection cement includes clinker and a hydration regulator in a weight ratio of 10:(0.5-0.7), wherein the clinker is made from raw meal including the following components: limestone 85-87 parts by weight; 7.5-8.5 parts by weight of rock; 5.0-6.0 parts by weight of non-ferrous metal slag; 3.6-5.4 parts by weight of spinel; 3.6-5.4 parts by weight of dolomite; 0.4-0.6 part by weight of sulfuric acid slag. According to the green environmental protection cement of the present application, a certain proportion of solid wastes of chemical products are added to the raw meal, which reduces the production cost and reduces the environmental burden, and the cement obtained therefrom has high compressive strength, high bending resistance Strength and strong impermeability. In addition, the present application also discloses a preparation method of the above-mentioned green and environmentally friendly cement, which is simple and efficient in operation and high in production efficiency.

Description

technical field [0001] The present application relates to the field of cement production, and more particularly, to a green and environment-friendly cement and a preparation method thereof. Background technique [0002] Cement, usually refers to a powdered hydraulic inorganic cementitious material, which forms a plastic slurry after adding an appropriate amount of water and stirring, and then hardens in air or water, and can firmly cement aggregates such as sand and stone together. . For a long time, cement, as one of the three main materials for construction, has played an important role in the development of the world economy. [0003] With the acceleration of urban construction, the consumption of cement is also increasing, and the production of cement requires a large amount of natural materials, especially clay as a raw material, which will cause serious damage to the environment during mining and is not renewable. And the adoption of new alternative materials has bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26C04B7/24C04B7/21C04B7/36
CPCC04B7/243C04B7/21C04B7/36Y02W30/91
Inventor 王成永张志丹乔国亮
Owner DENGZHOU CHINA UNITED CEMENT