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Common sintered brick prepared from casting waste

A technology of casting waste and sintered bricks, which is applied in the field of building sintered bricks, can solve the problems of single composition of foundry waste and poor resource reuse effect, and achieve the effects of reducing bulk density, facilitating full combustion, and ensuring appearance quality

Active Publication Date: 2019-06-28
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of foundry waste sand used in this process is relatively small, and the composition of available foundry waste is relatively simple, so the effect of resource reuse is not good.

Method used

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  • Common sintered brick prepared from casting waste

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A common sintered brick prepared from foundry waste, comprising the following raw materials in parts by weight: 25 parts of sand treatment ash, 20 parts of waste black sand, 25 parts of electric furnace ash, 7 parts of bentonite, 3 parts of attapulgite, and 20 parts of mineral powder.

[0040] The common fired brick of the present embodiment is prepared by the following method:

[0041] (1) Take each raw material according to the proportioning ratio, add it into a mixer, mix it for 3 minutes at a rotating speed of 500 r / min by the mixer, and add water accounting for 20% of the mass of the solid raw material, and mix evenly to obtain a mixture for use;

[0042] (2) The mixture is pressed into shape by a vibrating brick machine, and the extrusion pressure of the vibrating brick machine is 20MPa to obtain adobe;

[0043] (3) Dry the bricks in a drying kiln at a drying temperature of 110°C for 2 hours; then sinter them in a tunnel kiln at a sintering temperature of 800°C an...

Embodiment 2

[0045] A common fired brick prepared from foundry waste, comprising the following raw materials in parts by weight: 30 parts of sand treatment ash, 25 parts of waste black sand, 20 parts of electric furnace ash, 7 parts of bentonite, 10 parts of raw kaolin, and 8 parts of silica powder.

[0046] The common fired brick of the present embodiment is prepared by the following method:

[0047] (1) Take each raw material according to the proportioning ratio, add it into a mixer, mix it for 6 minutes at a rotating speed of 300 r / min by the mixer, and add water accounting for 13% of the mass of the solid raw material, and mix evenly to obtain a mixture for use;

[0048] (2) The mixture is pressed into shape by a vibrating brick machine, and the extrusion pressure of the vibrating brick machine is 12MPa to obtain adobe;

[0049] (3) Dry the bricks in a drying kiln at a drying temperature of 90°C and a drying time of 3 hours; then sinter them in a tunnel kiln at a sintering temperature ...

Embodiment 3

[0051] A common fired brick prepared from foundry waste, comprising the following raw materials in parts by weight: 30 parts of sand treatment ash, 25 parts of waste black sand, 30 parts of electric furnace ash, 10 parts of black mud, 5 parts of raw kaolin, 14 parts of silica powder, talc Powder 3 parts.

[0052] The common fired brick of the present embodiment is prepared by the following method:

[0053] (1) Take each raw material according to the proportioning ratio, add it into a mixer, mix it for 6 minutes at a speed of 500 r / min by the mixer, and add water accounting for 13% of the solid raw material quality, and mix evenly to obtain a mixture for use;

[0054] (2) the mixture is pressed into shape by a vibrating brick machine, and the extrusion pressure of the vibrating brick machine is 18MPa to obtain adobe;

[0055] (3) Dry the bricks in a drying kiln at a drying temperature of 70°C and a drying time of 6 hours; then sinter them in a tunnel kiln at a sintering temperat...

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Abstract

The invention relates to the field of building sintered bricks and particularly relates to a common sintered brick prepared from casting waste. The common sintered brick contains the following raw materials in parts by weight: 70-95 parts of the casting waste, 3-20 parts of an adhesive and 1-20 parts of an enhancer, wherein the casting waste contains sand processed ash, waste black sand and electric furnace ash in a ratio of (5-6) to (4-7) to (4-6). The casting waste is taken as the main raw material, the carbon contents of the sand processed ash and the electric furnace ash are relatively high, and carbon powder particles reach a micron level, so that the adequate combustion is easily realized in the internal combustion process, and sufficient heat is released; meanwhile, by virtue of ignition loss of the carbon powder, the unit weight of the sintered brick can be decreased, and the texture of a green brick is lightened; the main component of waste black sand is silicon dioxide, and silicon dioxide plays a role of a skeleton in the common sintered brick, so that the fluidity of the raw material of the green brick in the compression process can be effectively improved, meanwhile, the air permeability of the green brick is improved, and the adequate combustion of a fuel is promoted; and on the other hand, the sintering shrinkage of the green brick can be reduced, and the deformation can be reduced, so that the appearance quality of the common sintered brick is guaranteed.

Description

technical field [0001] The invention relates to the field of building fired bricks, in particular to a common fired brick prepared from foundry waste. Background technique [0002] Foundry production consumes a lot of resources and also produces a large amount of solid waste - foundry waste. The accumulation of a large number of foundry waste not only occupies natural resources such as land, but also pollutes the surrounding environment. How to comprehensively utilize the resources of foundry waste and waste resources has become The current foundry industry urgently needs to solve the problem. The Chinese invention patent with the publication number CN107522470A discloses a method for preparing sintered bricks from sludge and foundry waste sand, using foundry waste sand, coal gangue, sludge, etc. as raw materials, and provides a solution for the treatment of foundry waste sand. However, the amount of foundry waste sand used in this process is relatively small, and the compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138
CPCY02P40/60
Inventor 卢勇施高强陈小明白立威
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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