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A kind of preparation method of adding town sludge sintered brick

A technology of sintered bricks and sludge, applied in structural parts, clay products, applications, etc., can solve the problems of large volatile organic matter, no advantage in quality, unstable shape of finished bricks, etc., and achieve the effect of saving raw materials and reducing production costs

Active Publication Date: 2016-01-06
ZAOZHUANG MINGTONG NEW BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The early sludge in this type of process needs to be degraded, anaerobic, and dried. The sludge is exposed for a long time, and the environmental control guarantee is difficult to achieve the expected goal. Moreover, the modern brick kiln is automatically and continuously controlled, and the output is large. Add 40% -60% sludge, the continuous and large supply of sludge is first of all a raw material supply problem, such as directly reducing or not using sludge, in the continuous roasting kiln, the original technical parameter settings will lead to batches of defective bricks If artificial technology is used to adjust, the product quality is difficult to guarantee stably
The volatile organic matter in the sludge composition is relatively large, adding a large amount of sludge will lead to unstable shape of the finished brick, and compared with less sludge added and ordinary fired bricks, its quality has no advantage

Method used

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  • A kind of preparation method of adding town sludge sintered brick

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The first step is to pour the sludge into the sludge mixing tank (the mixing tank should be based on the actual sludge supply construction volume), add an appropriate amount of water and stir evenly, and when the water content of the sludge reaches 80%-90%, extract the sludge in the tank The calorific value is 1000 kcal and the volatilization of organic matter is 20%;

[0017] In the second step, add the sludge with a water content of 80-90% after extraction of calorific value and volatile content to other brick-making raw materials such as shale and coal gangue according to the ratio. The ratio is 60% for shale and 25% for coal gangue. , 5% of other mixed raw materials, stirred, mixed, milled and homogenized, and then sent to the aging warehouse for aging, wherein the content of sludge accounts for 10% of the total weight;

[0018] In the third step, according to the volatilization of organic matter in the sludge by 20%, it is determined that the size of the adobe is i...

Embodiment 2

[0023] The first step is to pour the sludge into the sludge mixing tank (the mixing tank should be based on the actual sludge supply construction volume), add an appropriate amount of water and stir evenly, and when the water content of the sludge reaches 80%-90%, extract the sludge in the tank The calorific value is 1500 kcal and the volatilization of organic matter is 15%;

[0024] The second step is to add the sludge with a water content of 80-90% after extraction of calorific value and volatile content to other brick-making raw materials such as shale and coal gangue according to the ratio. The ratio is 60% for shale and 27% for coal gangue , 5% of other mixed raw materials, stirred, mixed, milled and homogenized, and then sent to the aging warehouse for aging, wherein the content of sludge accounts for 8% of the total weight;

[0025] In the third step, according to the volatilization of organic matter in the sludge by 15%, it is determined that the size of the adobe is i...

Embodiment 3

[0030] The first step is to pour the sludge into the sludge mixing tank (the mixing tank should be based on the actual sludge supply construction volume), add an appropriate amount of water and stir evenly, and when the water content of the sludge reaches 80%-90%, extract the sludge in the tank The calorific value is 2000 kcal and the volatilization of organic matter is 15%;

[0031] In the second step, add the sludge with a water content of 80-90% after extraction of calorific value and volatile content to other brick-making raw materials such as shale and coal gangue according to the ratio. The ratio is 60% for shale and 29% for coal gangue , 5% of other mixed raw materials, stirred, mixed, milled and homogenized, and then sent to the aging warehouse for aging, wherein the content of sludge accounts for 6% of the total weight;

[0032] In the third step, according to the volatilization of organic matter in the sludge by 20%, it is determined that the size of the adobe is inc...

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Abstract

A method for preparing sintered bricks with urban sludge. The first step is to pour the sludge into a sludge mixing tank, add water and stir evenly, and extract the calorific value of the sludge in the tank when the water content of the sludge reaches 80%-90%. and the volatilization of organic matter; in the second step, add the sludge with a water content of 80-90% that has extracted calorific value and volatilization to the shale and coal gangue brick raw materials that are matched according to the ratio, stir, mix, grind and homogenize, Then send it to the aging warehouse for aging; the third step is to add the aged brick-making materials into the vacuum brick extrusion machine, and extrude to obtain wet bricks; the fourth step is drying, the fifth step is roasting, and drying The good bricks are sent to the roasting kiln, the roasting temperature is 1000-1100°C, and the roasting time is 24-28 hours to obtain sintered products.

Description

technical field [0001] The invention relates to a method for preparing building materials, in particular to a method for preparing sintered bricks added with town sludge. Background technique [0002] The sludge produced by urban sewage treatment plants has always been a major problem that plagues the urban environment. In some areas, the cost of sludge disposal is not a small sum. If it is not handled properly, it will cause secondary pollution. After testing, it is found that urban Sludge has organic matter with a certain calorific value, and there are many harmful substances that pollute the environment. The manufacturing process of adding sludge to make bricks is a more prominent treatment method that can utilize sludge resources without causing secondary pollution. [0003] In the existing brick-making process of municipal sludge, the general steps of drying and roasting kiln with automatic control are as follows: dehydration treatment of sludge first, or dehydration t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132H01M4/36H01M4/583
CPCY02E60/10Y02P40/60
Inventor 房茂青房磊李保华张成
Owner ZAOZHUANG MINGTONG NEW BUILDING MATERIAL