Low creep brick production method by using alumina tailings and fly ash

A manufacturing method and fly ash technology are applied in the manufacturing field of low-creep bricks to achieve the effects of long service life, good performance and low creep rate

Inactive Publication Date: 2013-08-07
孝义市和中兴矿产有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that bauxite tailings and fly ash could not be used to replace bauxite clinker, kyanite, andalusite and mullite in the past to prepare low-creep bricks, the present invention provides a method using bauxite tailings and fly ash Low-creep brick manufacturing method of fly ash

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The low-creep brick manufacturing method using bauxite tailings and fly ash is characterized in that: specifically, 30 parts of bauxite tailings fine powder with a particle size of less than 325 mesh and 63 parts of fly ash are mixed and stirred, and then pressed with a press After sintering at a high temperature of 1520°C, part of the sintered raw materials are broken into aggregate I with a particle size of less than 1 mm, aggregate II with a particle size of 1-3 mm, and bone with a particle size of 3-5 mm. Material III, the other part is ground into fine powder with a particle size below 200 mesh, take 20 parts of aggregate I, 15 parts of aggregate II, 23 parts of aggregate III, and 47 parts of fine powder, add binder and mix them into a mixer for stirring and grinding After pressing, the billets are finally made and dried, and finally processed into low-creep brick products after sintering at a high temperature of 1450 °C.

Embodiment 2

[0013] The low-creep brick manufacturing method using bauxite tailings and fly ash is characterized in that: specifically, 34 parts of bauxite tailings fine powder with a particle size of less than 325 meshes and 66 parts of fly ash are mixed and stirred, and then pressed with a press After sintering at a high temperature of 1540°C, part of the sintered raw materials are broken into aggregate I with a particle size of less than 1mm, aggregate II with a particle size of 1~3mm, and aggregates with a particle size of 3~5mm. Ⅲ, the other part is ground into a fine powder with a particle size below 200 mesh, take 10 parts of aggregate I, 20 parts of aggregate II, 26 parts of aggregate III, and 50 parts of fine powder, add a binder, mix and send it to a mixer for stirring and rolling , After the billet is finally made and dried, it is sintered at a high temperature of 1420°C and finally processed into a low-creep brick product.

Embodiment 3

[0015] The low-creep brick manufacturing method using bauxite tailings and fly ash is characterized in that: specifically, 38 parts of bauxite tailings fine powder with a particle size of less than 325 mesh and 70 parts of fly ash are mixed and stirred, and then pressed with a press After being sintered at a high temperature of 1480°C, part of the sintered raw materials are broken into aggregate I with a particle size of less than 1 mm, aggregate II with a particle size of 1-3 mm, and aggregates with a particle size of 3-5 mm. Ⅲ, the other part is ground into a fine powder with a particle size below 200 mesh, take 15 parts of aggregate I, 25 parts of aggregate II, 28 parts of aggregate III, and 40 parts of fine powder, add a binder, mix and send it to a mixer for stirring and rolling , After the billet is finally made and dried, it is finally processed into a low-creep brick product after sintering at a high temperature of 1430 °C.

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Abstract

The present invention particularly relates to a low creep brick production method by using alumina tailings and fly ash. In the prior art, alumina tailings and fly ash can not be adopted to replace alumina clinker, kyanite, andalusite and mullite to produce a low creep brick. With the present invention, the problem in the prior art is solved. The low creep brick production method specifically comprises: carrying out mixing processing molding on alumina tailings and fly ash, carrying out high temperature sintering homogenization, crushing to form a processing aggregate, taking the processing aggregate, matching the processing aggregate and alumina tailing crude ore fine powder, adding a binder, carrying out blank production and drying, carrying out high temperature sintering, and finally processing into the low creep clay brick product. The low creep brick produced by the production method has a good use performance, and has advantages of good thermal shock stability, low creep rate, long service life and the like compared with the similar products.

Description

technical field [0001] The invention relates to a method for manufacturing low-creep bricks, in particular to a method for manufacturing low-creep bricks using bauxite tailings and fly ash. Background technique [0002] Traditional bauxite tailings are aluminum-containing wastes produced during the mining of bauxite mines, which belong to bauxite-associated mines. In the existing bauxite tailings, the main mineral is a transition between kaolin and talc Type mineral resources, Al 2 o 3 The content is generally between 40% and 60%, and then according to SiO 2 and Fe 2 o 3d The difference in content is subdivided into two categories, one is high iron tailings, namely Fe 2 o 3 Content greater than 2%, SiO 2 The content is greater than 25%; the other is low-iron tailings, namely Fe 2 o 3 The content is about 1%, SiO 2 The content is about 30%. In the past, this kind of associated ore was often discarded because the above two impurities were too high, which not only ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622
Inventor 闫承华袁守仁闫祖光
Owner 孝义市和中兴矿产有限公司
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