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Preparation method of sludge regenerated ceramsite

A technology of ceramsite and sludge is applied in the field of preparation of sludge regenerated ceramsite to achieve the effect of reducing fuel cost, improving strength and high quality

Inactive Publication Date: 2019-03-15
YICHANG GUANGDA CERAMIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ceramsite preparation technology in the prior art cannot directly use sludge, solid waste and agricultural straw as raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Put the sludge with an initial water content of 46% into the drying drum and dry it until the water content is 3%, then put it into a pulverizer and pulverize it to a particle size of 5mm to obtain sludge powder, and then mix 55kg of sludge powder and 20kg of shale Powder, 10kg of solid waste powder, 3kg of clay, and 10kg of straw grains were added to a ball mill for grinding 2 and taken out to obtain a shell material with a particle size of 0.2mm; then 10kg of sawdust, 1kg of sludge powder, 0.5kg of shale powder and 1kg of water were added Take it out after stirring for 0.5h in the mixer to obtain the core material; then add the core material into the granulator to make a core ball with a diameter of 2mm, and then continue to add the shell material to the granulator to increase the diameter of the core ball to 7mm to obtain a green ball , while adding the shell material into the granulator, spray water mist into the granulator, and stop spraying water mist when the diam...

Embodiment 2

[0048] Add the sludge with an initial water content of 55% into the drying drum and dry it until the water content is 5%, then add a pulverizer to pulverize it to a particle size of 8mm to obtain sludge powder, and then mix 62kg of sludge powder and 26kg of shale Powder, 16kg of solid waste powder, 5kg of clay, and 12.5kg of straw grains were added to a ball mill and ground for 1.5 hours to obtain a shell material with a particle size of 0.11mm; then 15kg of sawdust, 2kg of sludge powder, 1.3kg of shale powder, and 2kg of Add water into the blender and stir for 45 minutes, then take it out to obtain the core material; then add the core material into the granulator to make a core ball with a diameter of 3 mm, and then continue to add shell material to the granulator to increase the diameter of the core ball to 8 mm to obtain a billet For balls, spray water mist into the granulator while adding the shell material into the granulator, and stop spraying water mist when the diameter...

Embodiment 3

[0056] Put the sludge with an initial water content of 60% into the drying drum and dry it until the water content is 8%, then put it into a pulverizer and pulverize it to a particle size of 10mm to obtain sludge powder, and then mix 70kg of sludge powder and 30kg of shale Powder, 20kg of solid waste powder, 8kg of clay, and 15kg of straw granules were added to a ball mill and ground for 2 hours to obtain a shell material with a particle size of 0.2mm; then 20kg of sawdust, 3kg of sludge powder, 2kg of shale powder and 3kg of water were added to the mixer Take it out after stirring for 1 hour to obtain the core material; then add the core material into the granulator to make a core ball with a diameter of 5 mm, and then continue to add the shell material to the granulator to increase the diameter of the core ball to 10 mm to obtain a green ball. While adding the shell material into the granulator, spray water mist into the granulator, and stop spraying water mist when the diame...

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PUM

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Abstract

The invention relates to a preparation method of sludge regenerated ceramsite. The preparation method comprises following steps: 1), sludge is added to a drying barrel and dried until water content is3%-8%, and then the sludge is smashed into sludge powder for standby application; 2), 55-70 parts of the sludge powder, 20-30 parts of shale powder, 10-20 parts of solid waste powder, 3-8 parts of clay and 10-15 parts of straw particles are added to a ball grinding mill and ground for 1-2 h, a mixture is taken out, and a shell material is obtained; 3), 10-20 parts of saw dust, 1-3 parts of the sludge powder, 0.5-2 parts of the shale powder and 1-3 parts of water are added to a stirrer and stirred for 0.5-1 h, a mixture is taken out, and a core material is obtained; 4), the core material is added to a granulator and core balls with diameter being 2-5 mm are prepared from the core material, the shell material is continuously added to the granulator, the diameter of the core balls is increased to 7-10 mm, and base balls are obtained; 5), the base balls are added to a rotary kiln and calcined in stages, and the ceramsite is obtained; 6), when primary ceramsite is continuously cooled to 90-110 DEG C, vibrational screening is performed, and oversize products are collected and products are obtained. The obtained ceramsite can be used for developing thermal insulation mortar, thermal insulation and sound insulation wall boards, bridge deck pavement, microwave absorption / ray shielding materials and the like.

Description

technical field [0001] The invention relates to the technical field of using sludge and other harmful substances to produce new building materials, in particular to a preparation method of sludge regenerated ceramsite. Background technique [0002] According to statistics, the harmless disposal rate of sludge in my country is still low, or 20%-30%, even lower in some areas. Among the main sludge treatment and disposal methods, the use of sludge in agriculture and landfill are subject to the land used for sludge disposal and the muddy quality of sludge, etc., while sludge drying and incineration can use the heat generated by the combustion of organic matter itself, which can completely kill sludge. pathogenic microorganisms, and minimize the volume of sludge. After incineration, the inorganic matter becomes a very small amount of ash, and the inorganic composition of the incineration ash is close to that of clay. Due to the fundamental change in the nature of the incineratio...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B38/06
CPCC04B35/622C04B35/62204C04B38/0675C04B2235/349C04B2235/5427C04B2235/5436C04B2235/656C04B2235/6567C04B2235/77C04B2235/94C04B2235/95C04B2235/96C04B38/0645
Inventor 陆光荣
Owner YICHANG GUANGDA CERAMIC PROD