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Light heat-insulation shale brick and preparation method thereof

A technology for shale bricks and internal combustion of coal is applied in the field of solid waste resource utilization, which can solve the problems of high quality of shale bricks and poor thermal insulation performance.

Pending Publication Date: 2019-01-15
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the article "Experimental Research on Preparation of Sintered Shale Bricks from Sewage Sludge", Fan Yingru et al. disclosed shale bricks prepared by using urban sludge and shale as raw materials, but the shale bricks are of high quality and poor thermal insulation performance

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  • Light heat-insulation shale brick and preparation method thereof
  • Light heat-insulation shale brick and preparation method thereof
  • Light heat-insulation shale brick and preparation method thereof

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preparation example Construction

[0037] The present invention also provides the preparation method of described shale brick, comprises the following steps:

[0038] Mix shale, municipal sludge, pore forming agent and internal combustion coal to obtain a mixture;

[0039] The mixed material is roughly smelted, aged, refined, extruded and fired to obtain shale bricks.

[0040]The invention mixes shale, urban sludge, pore-forming agent and internal combustion coal to obtain a mixture. In the present invention, the shale and internal combustion coal are preferably crushed, pulverized and screened independently and sequentially before use. The present invention does not have any special restrictions on the crushing and crushing, and can be carried out by using crushing and crushing processes well known to those skilled in the art; in the present invention, the crushing is preferably carried out in a jaw crusher; the crushing is preferably Perform in a twin stick mill. In the present invention, the sieving prefe...

Embodiment 1

[0053] The municipal sludge selected in this embodiment comes from Qilidian Sewage Treatment Plant in Guilin City. The moisture content of the municipal sludge is between 75% and 80%, which is neutral, and the calorific value of the dry sludge is 3600kJ kg -1 , wherein the chemical composition of the dry sludge is shown in Table 1;

[0054] The shale selected in this embodiment comes from Heishiling Village, Suqiao Town, Yongfu County, Guilin City, where the chemical composition of the shale is shown in Table 1;

[0055] 85 parts by weight of shale and 3 parts by weight of internal combustion coal are crushed by a jaw crusher and a double stick crusher respectively, and passed through a 3mm sieve for subsequent use;

[0056] 5 parts by weight of rice straw are dried, ground, passed through a 0.1mm sieve, and set aside;

[0057] Mix the above-mentioned 15 parts by weight of urban sludge, pulverized shale, pore-forming agent and internal combustion coal to obtain a mixture;

...

Embodiment 2

[0062] The municipal sludge selected in this embodiment comes from Lingui Water Treatment Plant in Guilin City. The moisture content of the municipal sludge is between 80-85%, which is neutral, and the calorific value of the dry sludge is 3500kJ kg -1 , wherein the chemical composition of the dry sludge is shown in Table 1;

[0063] The shale selected in this embodiment comes from Heishiling Village, Suqiao Town, Yongfu County, Guilin City, where the chemical composition of the shale is shown in Table 1;

[0064] 85 parts by weight of shale and 3 parts by weight of internal combustion coal are crushed by a jaw crusher and a double stick crusher respectively, and passed through a 3mm sieve for subsequent use;

[0065] 5 parts by weight of rice straw are dried, ground, passed through a 0.1mm sieve, and set aside;

[0066] Mix the above-mentioned 15 parts by weight of municipal sludge, pretreated shale, pore-forming agent and internal combustion coal to obtain a mixture;

[006...

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Abstract

The invention provides a light heat-insulation shale brick, and relates to the technical field of recycling of solid wastes. The light heat-insulation shale brick is prepared from the following raw materials in parts by weight: 85-95 parts of shale, 5-15 parts of municipal sludge, 2.7-5.5 parts of a pore forming agent, 3-4 parts of internal combustion coal and 3-10 parts of water, wherein the heatvalue of the internal combustion coal is 6100-6800 kilocalorie / kg. The preparation method utilizes the municipal sludge, the heavy metal in the municipal sludge can be solidified, and the organic matter in the sludge can provide energy for combustion process of the shale brick; the pore forming agent is added to generate a great amount of pores which are arranged in mess and not communicated mutually in the shale brick, the heat insulation performance of the brick is improved, and meanwhile, the self weight of the brick body is reduced. According to the record of the embodiment, the anti-pressure strength of the shale brick can be as high as MU5.0, the heat transfer coefficient can reach 0.48w / m<2>.k, and the volume density is lower than 1.53g.cm<-3>.

Description

technical field [0001] The invention relates to the technical field of resource utilization of solid waste, in particular to a shale brick and a preparation method thereof. Background technique [0002] Municipal sludge is an extremely complex heterogeneous mixture, and its basic components are most of the organic molecular fragments, microbial bacterial cells, inorganic phase particles, and colloids. The state of municipal sludge is mainly between liquid and solid, and it is a thick mixture of the two. [0003] At present, the treatment methods for municipal sludge mainly focus on sanitary landfill, agricultural use and incineration after stable dehydration treatment. Sanitary landfill is the main method of sludge treatment at present, but there is a problem of secondary pollution; agricultural use of sludge will cause land agglomeration, which is not conducive to long-term land resource utilization; sludge incineration can achieve reduction and harmless However, the cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B33/132C04B33/04C04B33/13
CPCC04B33/04C04B33/13C04B33/1321C04B38/0675C04B38/068C04B2235/602C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607C04B38/0074C04B38/0067Y02P40/60
Inventor 姚毅于文杰周自坚卢宇罗义淞林华李海翔
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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