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A kind of light unfired ceramsite for roof greening and preparation method thereof

A roof greening and ceramsite technology is applied in the field of lightweight non-fired ceramsite and its preparation, which can solve the problems of secondary pollution, complex process and high cost, and achieve the advantages of avoiding secondary pollution, simple preparation process and excellent physical and chemical properties. Effect

Inactive Publication Date: 2017-10-31
河南新封生态环境工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Urban sludge is the sludge left at the end of sewage treatment in urban sewage treatment plants. It has high water content, high organic content, and fine particles. The cost of reprocessing is very high. Random disposal will cause secondary pollution. Rational utilization is also a hot spot of current research. For example, Wang Mouquan et al. have studied a method of using urban sludge, loess and iron ore powder to burn ceramsite (CN102173745A), but this method is a sintering method, the cost is high, and the process is relatively complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing light-weight unfired ceramsite for roof greening, comprising the following preparation steps:

[0036] (1) Raw materials: urban sludge and fly ash are used as main raw materials, quicklime, gypsum, Portland cement, ferrous sulfide and straw ash are used as auxiliary components, and lithium carbonate, bauxite, fluorite powder and sodium pyrophosphate are used , potassium lauryl ether phosphate, and nano-alumina are additives; the parts by weight of each raw material are:

[0037] 30 parts of urban sludge;

[0038] 30 parts of fly ash;

[0039] 7 parts quicklime;

[0040] 7 parts of gypsum;

[0041] Portland cement 7 parts;

[0042] 7 parts of ferrous sulfide;

[0043] 7 parts straw ash;

[0044] Lithium carbonate 2 parts;

[0045] Bauxite 2 parts;

[0046] Fluorite powder 2 parts;

[0047] Sodium pyrophosphate 2 parts;

[0048] Potassium lauryl ether phosphate 2 parts;

[0049] 2 parts of nano-alumina;

[0050] (2) Mixing: Mix the raw m...

Embodiment 2

[0059] A method for preparing light-weight unfired ceramsite for roof greening, comprising the following preparation steps:

[0060] (1) Raw materials: urban sludge and fly ash are used as main raw materials, quicklime, gypsum, Portland cement, ferrous sulfide and straw ash are used as auxiliary components, and lithium carbonate, bauxite, fluorite powder and sodium pyrophosphate are used , potassium lauryl ether phosphate, and nano-alumina are additives; the parts by weight of each raw material are:

[0061] 25 parts of urban sludge;

[0062] 35 parts of fly ash;

[0063] 6 parts quicklime;

[0064] 7 parts of gypsum;

[0065] Portland cement 6 parts;

[0066] 6 parts of ferrous sulfide;

[0067] 7 parts straw ash;

[0068] 3 parts of lithium carbonate;

[0069] 3 parts of bauxite;

[0070] Fluorite powder 2 parts;

[0071] Sodium pyrophosphate 1 part;

[0072] Potassium lauryl ether phosphate 2 parts;

[0073] 1 part of nano-alumina;

[0074] (2) Mixing: Mix the r...

Embodiment 3

[0083] A method for preparing light-weight unfired ceramsite for roof greening, comprising the following preparation steps:

[0084] (1) Raw materials: urban sludge and fly ash are used as main raw materials, quicklime, gypsum, Portland cement, ferrous sulfide and straw ash are used as auxiliary components, and lithium carbonate, bauxite, fluorite powder and sodium pyrophosphate are used , potassium lauryl ether phosphate, and nano-alumina are additives; the parts by weight of each raw material are:

[0085] 20 parts of urban sludge;

[0086] 40 parts of fly ash;

[0087] 7 parts quicklime;

[0088] 9 parts of gypsum;

[0089] Portland cement 7 parts;

[0090] 7 parts of ferrous sulfide;

[0091] 9 parts straw ash;

[0092] Lithium carbonate 1 part;

[0093] Bauxite 2 parts;

[0094] 3 parts fluorite powder;

[0095] Sodium pyrophosphate 2 parts;

[0096] Potassium lauryl ether phosphate 2 parts;

[0097] 1 part of nano-alumina;

[0098] (2) Mixing: Mix the raw mat...

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PUM

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Abstract

The invention discloses a preparation method for light burn-free ceramsite for roof greening. Town sludge and fly ash are used as main raw materials; calcined lime, gypsum, portland cement, ferrous sulfide and straw ash are used as auxiliary components; lithium carbonate, bauxite, fluorite powder, sodium pyrophosphate, potassium polyoxyethylene laurylether phosphate and nanometer aluminium oxide are used as additives. The preparation steps comprise material preparation, mixing, granulation formation, and steam curing; the apparent density of the prepared light burn-free ceramsite is lower than 1.1 g / cm<3>.

Description

technical field [0001] The invention belongs to a light-weight non-fired ceramsite used for roof greening and a preparation method thereof, and belongs to the field of roof greening. Background technique [0002] As people's requirements for greening are getting higher and higher, ceramsite has gradually become the main material for covering greening. Covering with ceramsite can keep heat, save water, promote plant growth, and improve soil ecological environment, which is an economic benefit. Very tall planting method. [0003] Urban sludge is the sludge left at the end of sewage treatment in urban sewage treatment plants. It has high water content, high organic content, and fine particles. The cost of reprocessing is very high. Random disposal will cause secondary pollution. Rational utilization is also a hot spot of current research. For example, Wang Mouquan et al. have studied a method of using urban sludge, loess and iron ore powder to burn ceramsite (CN102173745A), bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B28/14
Inventor 潘丙勇潘永堂潘好奇丁立陈念潘建杰
Owner 河南新封生态环境工程股份有限公司
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