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Environment-friendly water-permeable brick and production method thereof

A manufacturing method and technology of permeable bricks are applied in the field of building materials, which can solve the problems of dissolving heavy metal ions and polluting the environment, and achieve the effects of no heavy metal ion dissolution, reduced mobility, and high compressive strength.

Inactive Publication Date: 2017-06-27
内蒙古科韵环保材料股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the patent of the present invention is that the use of solid waste to prepare water seepage bricks, especially maintenance-type water seepage bricks, may dissolve heavy metal ions during water seepage and pollute the environment

Method used

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  • Environment-friendly water-permeable brick and production method thereof
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. In parts by weight, the components and dosage of the ceramsite mixture (100 parts by total weight, the same below) are: 40 parts of gold tailings, 20 parts of iron tailings, 20 parts of red mud, 20 parts of clay, Ball milling in a ball mill until the particle size of the mixture is 200 mesh;

[0025] 2. Add water with a weight percentage of 20% in the mixture as a granulating agent, and granulate it through a drum granulator to make the particle size reach about 3mm~4mm, and then dry it after sieving to control its moisture content below 5%. , put the granulated blank into clay powder, continue to roll and granulate, wrap the blank in the middle, and cover the outer layer with a layer of ceramsite about 1-2mm thick.

[0026] 3. Put the ceramsite raw material into the drying equipment and keep it warm at 110°C for 48 hours to remove the natural water. Directly put the ceramsite raw material into a gas-fired rotary kiln for calcination at 1150°C-1250°C for 2 hours, an...

Embodiment 2

[0029] 1. In parts by weight, the components and dosage of ceramsite mixture (100 parts by total weight, the same below) are: 20 parts of gold tailings, 30 parts of iron tailings, 20 parts of dried sludge, 20 parts of red mud part, 10 parts of clay, ball milled in a ball mill until the particle size of the mixture is 200 mesh;

[0030] 2, with embodiment one step.

[0031] 3. Put the ceramsite raw material into the drying equipment and keep it warm at 110°C for 48 hours to remove the natural water. The ceramsite raw meal was directly put into a gas-fired tunnel kiln for calcination at 1200°C for 3 hours, and rapidly cooled to room temperature at a cooling rate of 30°C / min.

[0032] 4. Select 5~20mm vitrified ceramsite as aggregate, use 42.5 grade Portland cement, water cement ratio 0.3, bone ash ratio 4.5, lignosulfonate water reducer mass fraction 2.5%, use cement slurry pre The mixing method is static pressure molding after mixing, and then 28 days of sealing and wet curin...

Embodiment 3

[0034] 1. In parts by weight, the components and dosage of ceramsite mixture (100 parts by total weight, the same below) are: 30 parts of molybdenum tailings, 30 parts of iron tailings, 10 parts of dried sludge, 30 parts of clay, ball milled in a ball mill until the particle size of the mixture is 200 mesh;

[0035] 2, with embodiment one step.

[0036] 3. Put the ceramsite raw material into the drying equipment and keep it warm at 110°C for 48 hours to remove the natural water. Put the ceramsite raw material directly into the gas-fired rotary kiln for calcination at 1250°C for 2 hours, and rapidly cool to room temperature at a cooling rate of 50°C / min.

[0037]4. Select 5~20mm vitrified ceramsite as aggregate, use 42.5 grade Portland cement, water cement ratio 0.3, bone ash ratio 5.0, lignosulfonate water reducing agent mass fraction 2.5%, use cement slurry pre The mixing method is static pressure molding after mixing, and then 28 days of sealing and wet curing to make envi...

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Abstract

The invention relates to a water-permeable brick and a production method thereof. Granulating and secondary 'pelletizing' moulding technologies are adopted for preparing raw materials, by carrying out high temperature calcining, most of heavy metals in pellets are fused with silicate glass formed in a high temperature roasting stage, a stable solid solution is formed, and the mobility of the heavy metals is reduced. Meanwhile, by virtue of quick cooling, vitrification on clay coated on the surfaces of ceramsites is completed, so that dual effects of preventing heavy metal ions from leaching out and preventing scum are achieved. The water-permeable brick made by mixing the ceramsites with cement mortar and maintaining has the characteristics of high compressive strength, good durability, no dissolution of heavy metal ions, high water penetration and water conserving function.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environment-friendly permeable brick. Background technique [0002] Ceramsite is ceramic particles, most of which are round or oval spheres or cylinders in appearance. There is a hard shell on the surface of ceramsite, which is made of pottery or enamel, which is used to insulate water and keep air, and makes ceramsite have high strength. Ceramsite has the characteristics of high cylinder compressive strength, low density, low water absorption, high softening coefficient, and good frost resistance. It is precisely because of these excellent properties that ceramsite is widely used in the field of building materials, petrochemical industry, gardening and gardening, etc., and the application field of ceramsite is still expanding. [0003] Metal mine tailings is a secondary resource containing trace metal minerals and a large amount of non-metallic minera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/02C04B38/00C04B14/10C04B18/12C04B18/04
CPCC04B18/027C04B28/04C04B2111/00284C04B2201/50C04B24/18C04B38/00C04B18/023C04B14/10C04B18/12C04B18/0409C04B18/0427Y02W30/91
Inventor 李超张雪峰王雨蓬汤德君贾晓林张泉张瑞峰杨博宇杨哲宇高嘉珣
Owner 内蒙古科韵环保材料股份公司
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