A kind of preparation method of iron slag autoclaved brick

A technology of jarosite slag and autoclaved bricks, which is applied in the field of preparation of jarosite slag autoclaved bricks, can solve the problems of difficulty in stacking and processing, polluting the environment, and large amount of slag, and achieves simple and feasible operation, reduced cement consumption, and reduced The effect of project cost

Active Publication Date: 2021-04-02
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Alumite slag is a dangerous solid waste in the leaching solution produced in the production process of electrolytic zinc. The amount of slag is large, and it is difficult to stack and treat. Moreover, China’s electrolytic zinc smelting ranks first in the world. No matter what process is used for hydrometallurgy , will produce a large amount of leachate, which seriously pollutes the environment

Method used

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  • A kind of preparation method of iron slag autoclaved brick

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Effect test

Embodiment 1

[0022] A jarosite slag autoclaved brick, which is composed of the following raw materials in parts by weight: 13.5 parts of water, 30 parts of cement, 8 parts of jarosite slag, 117 parts of coarse aggregate, 67 parts of fine aggregate, 0.1 part of calcium chloride, Magnesium chloride is 0.2 parts, and the water-cement ratio is 0.45.

[0023] Among them, the cement adopts P.O42.5 ordinary Portland cement.

[0024] Among them, the coarse aggregate is continuously graded crushed stone with a particle size of 11.5 mm and a moisture content of 0.5%.

[0025] Among them, the fine aggregate has a fineness modulus of 2.77 and a moisture content of 2.6%, which belongs to the ordinary sand in the middle sand II zone.

[0026] The preparation method of the above-mentioned ferrite slag autoclaved brick comprises the following steps:

[0027] (1) Take each raw material according to the component distribution ratio, put the coarse aggregate, fine aggregate, alumina slag, cement and admixt...

Embodiment 2

[0030] A jarosite slag autoclaved brick, which is composed of the following raw materials in parts by weight: 27 parts of water, 45 parts of cement, 6 parts of jarosite slag, 129 parts of coarse aggregate, 74 parts of fine aggregate, 0.1 part of calcium chloride, Sodium chloride is 0.1 part, and the water-cement ratio is 0.6.

[0031] Among them, the cement adopts P.O42.5 ordinary Portland cement.

[0032] Among them, the coarse aggregate is continuously graded crushed stone with a particle size of 5mm and a moisture content of 0.5%.

[0033] Among them, the fine aggregate has a fineness modulus of 2.77 and a moisture content of 2.6%, which belongs to the ordinary sand in the middle sand II zone.

[0034] The preparation method of the above-mentioned ferrite slag autoclaved brick comprises the following steps:

[0035] (1) Take each raw material according to the component distribution ratio, put the coarse aggregate, fine aggregate, alumina slag, cement and admixture into th...

Embodiment 3

[0038] A jarosite slag autoclaved brick, which is composed of the following raw materials in parts by weight: 10 parts of water, 25 parts of cement, 4 parts of jarosite slag, 104 parts of coarse aggregate, 60 parts of fine aggregate, 0.2 part of sodium chloride, Magnesium chloride is 0.1 part, and the water-cement ratio is 0.4.

[0039] Among them, the cement adopts P.O42.5 ordinary Portland cement.

[0040] Among them, the coarse aggregate is continuously graded crushed stone with a particle size of 19.5 mm and a moisture content of 0.5%.

[0041] Among them, the fine aggregate has a fineness modulus of 2.77 parts and a moisture content of 2.6%, which belongs to the ordinary sand in the middle sand zone II.

[0042] The preparation method of the above-mentioned ferrite slag autoclaved brick comprises the following steps:

[0043] (1) Take each raw material according to the component distribution ratio, put the coarse aggregate, fine aggregate, alumina slag, cement and admix...

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Abstract

The invention discloses a preparation method of a jarosite slag steam-pressing brick, and relates to the technical field of building materials. The jarosite slag steam-pressing brick is prepared from,by weight, 5.6-27 parts of water, 16-45 parts of cement, 4-13 parts of jarosite slag, 104-129 parts of coarse aggregate and 60-74 parts of fine aggregate, the water cement ratio is 0.35-0.60, and 0.1-0.5 part by weight of additives are adopted. The jarosite slag steam-pressing brick prepared through the method has compressive strength, the requirements of different concrete strength grades can bemet, the problems of resource waste and environmental pollution generated by jarosite slag piling up and landfill are solved, energy conservation and environment protection are achieved, sustainabledevelopment of the resource environment is facilitated, the jarosite slag is used for partially replacing cement, the dosage of the cement is reduced, the engineering cost is lowered, the manufacturing cost of the steam-pressing brick is lowered, and the method has a wide engineering application prospect.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing an autoclaved brick made of alum slag. Background technique [0002] With the continuous advancement of my country's modernization process and the continuous development of the construction industry, concrete has become the most widely used material in construction projects, and the consumption of construction materials is huge. Cement is one of the important raw materials in building materials. Since the 1950s and 1960s, industrial waste residues have been used to prepare compound cement or partially replace cement, reduce the amount of cement, and solve the contradiction between supply and demand of building materials. In addition to slag, fly ash, coal gangue, carbide slag, steel slag, and flue gas desulfurization gypsum have entered the field of cement production one after another. [0003] Alumite slag is a dangerous solid waste in the leac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B14/02C04B14/06C04B18/144
Inventor 武萍于峰江楠项国圣孔正义王士龙方圆
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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