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Method for producing aerated building block used for oxidation furnace by using doping iron ore tailings

A technology for iron ore tailings and aerated blocks, which is applied in the directions of climate sustainability, sustainable waste treatment, solid waste management, etc., to achieve the effects of large usage, light bulk density and high strength

Inactive Publication Date: 2014-09-17
HEFEI RISINE HEATEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, it has been reported that iron ore tailings are used as auxiliary raw materials to produce cement, wall bricks, and road materials, but iron ore tailings are used as the main raw material for the production of oxidation furnace aerated blocks.

Method used

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Embodiment Construction

[0019] A kind of doped iron ore tailings production is used in oxidation furnace aerated block method, and this method comprises the following steps:

[0020] 1), after mixing fly ash, anhydrite and iron ore tailings for crushing, take 12-19 parts of fly ash, 2-3 parts of anhydrite and 20-30 parts of iron ore tailings in parts by mass slag;

[0021] 2), take 10-15 parts of phosphate slag and 1-2.5 parts of aluminum powder in mass parts before fine grinding, and mix the crushed fly ash, anhydrite and iron ore tailings with phosphate slag and aluminum The powder is mixed evenly and finely ground;

[0022] 3), crushing masonry slag, and taking 12-25 parts of masonry slag by mass parts;

[0023] 4), put the crushed masonry slag and the finely ground dry material into the mixing equipment, add water to fully stir, and add 2-4 parts of sodium nitrate solution with a concentration of 8-10%;

[0024] 5), the slurry stirred in the above step (4) is at a temperature of 65-75°C, and t...

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Abstract

The invention discloses a method for producing an aerated building block used for an oxidation furnace by using doping iron ore tailings. The method comprises the following steps: 1) mixing and crushing fly ash, anhydrite and iron ore tailings and weighing, by mass, 12 to 19 parts of fly ash, 2 to 3 parts of anhydrite and 20 to 30 parts of iron ore tailings; 2) before fine grinding, weighing 10 to 15 parts by mass of phosphorus slag and 1 to 2.5 parts by mass of aluminum powder, uniformly mixing crushed fly ash, anhydrite and iron ore tailings with phosphorus slag and aluminum powder and then carrying out fine grinding; and 3) crushing brick slag and taking 12 to 25 parts by mass of the crushed brick slag. According to the invention, the usage amount of iron ore tailings is great, energy conservation and environmental protection are realized, the problem of environmental pollution caused by stockpiling treatment of iron ore tailings is alleviated, and a novel raw material is provided for a hollow brick.

Description

technical field [0001] The invention relates to the field of new building materials, in particular to a method for producing aerated blocks for oxidation furnaces by doping iron ore tailings. Background technique [0002] For a long time, the comprehensive utilization of iron ore tailings has been a worldwide problem. Although a lot of research has been done on the comprehensive utilization of iron ore tailings at home and abroad, most of them have not been put into practice due to various technical and economic reasons. industrial realization. [0003] In summary, there have been reports on using iron ore tailings as auxiliary raw materials to produce cement, wall bricks, and road materials, but there have been no reports on using iron ore tailings as the main raw material for the production of oxidation furnace aerated blocks. Contents of the invention [0004] The purpose of the present invention is to provide a method of doping iron ore tailings to produce aerated blo...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/00C04B18/30
CPCY02W30/91
Inventor 张时利王建跃王皓静
Owner HEFEI RISINE HEATEK
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