Process for making bricks by sludge

A sludge brick making technology, applied in clay products, ceramic products, applications, etc., can solve problems such as agglomeration, affecting strength, and inability to fully mix evenly, and achieve the effect of light bricks and many pores

Inactive Publication Date: 2014-03-05
HANGZHOU JINXIANGJIA ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, it cannot be fully stirred evenly when stirring, and the bricks produced will agglomerate, which affects the strength and is easy to brittle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of mud brick making process, comprises the following steps:

[0019] 1) Dry the sludge with a moisture content of 80%-85% to a moisture content of ≤60%, and then mix it with other raw materials;

[0020] 2) Send the prepared materials into a powerful extrusion mixer for mixing, then grind and homogenize them with a powerful wheel, and then send them to the aging warehouse for aging for 32 hours;

[0021] 3) Put the aged material into the mixed fine crusher for homogenization, then put the homogenized material into the twin-shaft stirring extruder and the double-stage vacuum extruder to make mud sticks, and then The automatic strip cutting machine cuts the mud strip into shape;

[0022] 4) The shaped bricks are sent to the drying room for drying. The inlet temperature of the drying room is 100-140°C, the outlet temperature is 35-45°C, and the drying time is 24 hours;

[0023] 5) Put the dried bricks into the tunnel kiln for sintering. The tunnel ki...

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PUM

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Abstract

The invention discloses a process for making bricks by sludge. The process comprises the following steps: carrying out semi-drying on the sludge and preparing other raw materials; conveying the prepared materials into a strong extruding agitator to be mixed; rolling and homogenizing a mixture by a strong wheel mill and conveying the mixture into an aging room to be aged; putting the aged material into a mixed type fine crusher to be homogenized; sequentially putting the homogenized material into a double-shaft agitating extruder and a double-stage vacuum extruder to be prepared into a sludge strip; cutting the sludge strip into blanks by an automatic slitting and blank cutting machine and molding; conveying the molded brick blanks into a drying room to be dried; and putting the dried brick blanks into a tunnel kiln to be sintered. According to the process for making the bricks by the sludge, the mixed materials are agitated sufficiently and uniformly and the prepared bricks are light, have many pores and have the advantages of certain sound insulation and heat insulation effects and the like; the self heating amount of the municipal sludge is utilized sufficiently, reasonably and effectively.

Description

technical field [0001] The invention belongs to the harmless treatment and resource utilization technology of urban sludge, in particular to a sludge brick-making process. Background technique [0002] Municipal sludge refers to the solid waste generated during the treatment of urban domestic sewage and industrial wastewater, and is a regular product of urban sewage treatment plants. This sludge has a high water content, is perishable, has a strong odor, and contains toxic substances such as dioxins, bacteria, parasite eggs, and heavy metals. Most sewage plants and construction units just send the sludge to the landfill or directly expose it to the wilderness, causing secondary pollution. [0003] With the increasing amount of urban sewage discharge, more and more sludge is deposited, and sludge treatment is very difficult. At present, the methods of sludge disposal in my country are landfill, incineration, and land utilization. None of the disposal methods can comprehens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/132
CPCY02P40/60
Inventor 陈明雄陈晶晶杜建旭
Owner HANGZHOU JINXIANGJIA ENVIRONMENTAL PROTECTION TECH
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