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Method of producing water permeable brick through extrusion molding of aeolian sand

A technology of extrusion molding and permeable bricks, which is applied in applications, household appliances, clay products, etc., can solve the problems of small desert sand usage, long production cycle, and difficult operation, so as to maintain surface water circulation and solve groundwater source problems , Improve the effect of air quality

Active Publication Date: 2018-04-27
咸阳陶瓷研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that the production cycle is long, the epoxy resin and curing agent used in the production process are highly viscous, and the operation is difficult
This technology uses a lot of raw materials, the production process is complicated, and the amount of desert sand used is not large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Crush and sieve aeolian sand into raw material particles below 80 mesh, crush and sieve bentonite and calcite into below 80 mesh, and sieve sawdust into below 30 mesh for use; weigh raw materials according to the following weight percentage: aeolian sand 70 %, bentonite 25%, calcite 5%, sawdust 5%, stir evenly, and set aside;

[0020] (2) Add the cmc sol with a concentration of 3.5% to step (1), add 15% of the cmc sol and add 0.5% glycerin, stir well, and stale for 24 hours;

[0021] (3) Put the stale material obtained in step (2) into the extruder and extrude it;

[0022] (4) Put the green body obtained in step (3) at room temperature for 48 hours, put it in an oven at 100°C, and dry it until the water content is lower than 1%;

[0023] (5) The heating rate is 1-2°C / min from room temperature to 350°C, the heating rate is 4-5°C / min at 350°C-850, the heating rate is 1-2°C / min at 850-950°C, and the heating rate is 4-5°C / min Min firing to 1180°C, heat preservation fo...

Embodiment 2

[0025] (1) Crush and sieve aeolian sand into raw material particles below 80 mesh, crush and sieve bentonite and calcite into below 80 mesh, and sieve sawdust into below 30 mesh for use; weigh raw materials according to the following weight percentage: aeolian sand 65 %, bentonite 25%, calcite 10%, sawdust 4%, stir evenly, and set aside;

[0026] (2) Add the cmc sol with a concentration of 4% to step (1), add 18% of the cmc sol and add 0.8% glycerin, stir well, and stale for 24 hours;

[0027] (3) Add the extruding material obtained in step (2) into an extruding machine, and extrude;

[0028] (4) Put the green body obtained in step (3) at room temperature for 48 hours, put it in an oven at 110°C, and dry it until the moisture content is lower than 1%;

[0029] (5) The heating rate is 1-2°C / min from room temperature to 350°C, 4-5°C / min at 350°C-850, 1-2°C / min at 850-950°C, and 4-5°C / min at 850-950°C. Min firing to 1180°C, heat preservation for 20 minutes, and cooling to room ...

Embodiment 3

[0031] (1) Crush and sieve aeolian sand into raw material particles below 80 mesh, crush and sieve bentonite and calcite into below 80 mesh, and sieve sawdust into below 30 mesh for use; weigh raw materials according to the following weight percentage: aeolian sand 75 %, bentonite 20%, calcite 5%, sawdust 10%, stir evenly, and set aside;

[0032] (2) Add the cmc solution with a concentration of 3% to step (1), add 12% of the cmc sol and add 0.8% glycerin, stir evenly, and stale;

[0033] (3) Add the extruding material obtained in step (2) into an extruding machine, and extrude;

[0034] (4) Put the green body obtained in step (3) at room temperature for 48 hours, put it in an oven at 80°C, and dry it until the water content is lower than 1%;

[0035] (5) From room temperature to 350°C, the heating rate is 1-2°C / min, at 350°C--850, the heating rate is 4-5°C / min, at 850-950°C, the heating rate is 1-2°C / min, and the heating rate is 4-5°C / min firing to 1180°C, heat preservation...

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PUM

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Abstract

The invention discloses a method of producing a water permeable brick through extrusion molding of aeolian sand, wherein the water permeable brick is mainly prepared from aeolian sand, bentonite, calcite and sawdust according to the following ratio, by weight, 50-80% of aeolian sand, 10-40% of bentonite, 0-15% of calcite and 0-10% of sawdust. A proper amount of CMC sol and glycerol are added, andthen the components are uniformly stirred. Finally extrusion molding, drying and sintering are carried out to obtain the water permeable brick, sintering temperature being 1180 DEG C. The water permeable brick is 1.0-1.5*10<-2> cm / s in water permeation coefficient. The water permeable brick has effects of water permeation, gas permeation and water retention, can reduce temperature and noise, regulate weather and improve air quality and maintain surface water circulation. The water permeable brick solves a problem of influence on walking due to accumulated water on a road surface in rainy day of a city.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a method for preparing permeable bricks by using aeolian sand. Background technique [0002] In recent years, the sponge city concept proposed by the state can give full play to the role of urban green spaces, roads, and systems in absorbing, storing and slowing down rainwater, effectively alleviate urban waterlogging, reduce urban runoff pollution load, save water resources, and protect and improve urban areas. ecosystem. Its main feature is that the road permeable pavement forms a sponge body, and ceramic permeable bricks are very good road paving materials. As a result, the research and market demand of permeable bricks has grown tremendously, and more and more permeable bricks are used in the construction of sponge cities. On the one hand, rainwater passes through permeable bricks, and water will not flow around like on cement pavement, ensuring th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B38/06
CPCC04B33/13C04B38/0675C04B2235/3208C04B2235/5427C04B2235/6021C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B38/067
Inventor 贺晓梅郭伟卢庆阳
Owner 咸阳陶瓷研究设计院有限公司
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