Sludge coal ash high-strength ceramsite and preparation method thereof

A high-strength ceramsite and fly ash technology, applied in the production of clay products, other household appliances, ceramic materials, etc., can solve the problems of low absorption rate, low compressive strength of sludge fly ash ceramsite cylinder, etc., and achieve high absorption rate, shortening of setting time, and the effect of enhancing strength

Active Publication Date: 2015-01-07
CHONGQING HAOPAN ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies of the above-mentioned prior art, the present invention aims to solve the problems of low cylinder compressive strength and low absorption rate of sludge fly ash ceramsite, and provide a ceramsite with high cylinder compressive strength and high absorption rate and its preparation method

Method used

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  • Sludge coal ash high-strength ceramsite and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Put sludge, fly ash, calcium sulfoaluminate, phthalate, water glass and deodorant into the stirring mixing tank according to the following proportions by weight and mix for 3 minutes to prepare the mixture 1 ;

[0038] The weight ratio of described sludge, fly ash, calcium sulfoaluminate, phthalate, water glass and deodorant is 67 parts, 30 parts, 0.5 part, 0.5 part, 1 part, 1 part; Wherein , the water content of the sludge is 40wt%, the solid content of the water glass is 80wt%, and the deodorant is "Leida" brand microbial deodorant;

[0039] 2) Add water to the mixture 1 obtained in step 1) until the water content is 13wt%, and then stir evenly to obtain the mixture 2;

[0040] 3) Transfer the mixture 2 obtained in step 2) into an extrusion granulator to obtain raw meal balls with a particle size of 5mm, wherein the impact force of the extrusion granulator is not less than 20kN;

[0041] 4) Transfer the raw pellets obtained in step 3) into a rotary kiln through a...

Embodiment 2

[0047] 1) Put sludge, fly ash, calcium sulfoaluminate, phthalate, water glass and deodorant into the stirring mixing tank according to the following proportions by weight and mix for 4 minutes to prepare the mixture 1 ;

[0048] The proportioning by weight of the sludge, fly ash, calcium sulfoaluminate, phthalate, water glass and deodorant is 50 parts, 45 parts, 1 part, 1 part, 2 parts, 1 part Wherein, the water content of the sludge is 50wt%, the solid content of the water glass is 85wt%, and the deodorant is "Leida" brand microbial deodorant;

[0049] 2) Add water to the mixture 1 obtained in step 1) until the water content is 14wt%, and then stir evenly to obtain the mixture 2;

[0050] 3) Transfer the mixture 2 obtained in step 2) into an extrusion granulator to obtain raw meal balls with a particle size of 15mm, wherein the impact force of the extrusion granulator is not less than 20kN;

[0051] 4) Transfer the raw pellets obtained in step 3) into a rotary kiln through ...

Embodiment 3

[0057] 1) Put the sludge, fly ash, calcium sulfoaluminate, phthalate, water glass and deodorant into the stirring mixing tank according to the following proportions by weight and mix for 5 minutes to prepare the mixture 1 ;

[0058] The proportioning by weight of the sludge, fly ash, calcium sulfoaluminate, phthalate, water glass and deodorant is 45 parts, 49 parts, 1.5 parts, 1 part, 3 parts, 0.5 parts Wherein, the water content of the sludge is 35wt%, the solid content of the water glass is 90wt%, and the deodorant is "Leida" brand microbial deodorant;

[0059] 2) Add water to the mixture 1 obtained in step 1) until the water content is 15wt%, and then stir evenly to obtain the mixture 2;

[0060] 3) Transfer the mixed material 2 with a moisture content of 15wt% obtained in step 2) into an extrusion granulator to obtain raw meal pellets with a particle size of 20mm, wherein the impact force of the extrusion granulator is not less than 20kN;

[0061] 4) Transfer the raw pel...

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Abstract

The invention discloses sludge coal ash high-strength ceramsite and a preparation method thereof. By using sludge and coal ash as main raw materials, the ceramsite is prepared by mixing, prilling and calcining by synergic match with an additive. The ceramsite is prepared from the following raw materials in parts by weight: 40-70 parts of sludge, 30-55 parts of coal ash, 0.5-1.5 parts of calcium sulphoaluminate, 0.5-1 part of phthalate, 1-3 parts of water glass and 0.5-1 part of a deodorant, wherein the water content of sludge is controlled within 35-50wt%. The sludge coal ash high-strength ceramsite is prepared by the following steps: mixing the materials; prilling; drying; calcining; and cooling. The ceramsite disclosed by the invention is economical, environment-friendly, efficient and energy-saving and scientific and reasonable in match of components of raw materials, and the prepared sludge coal ash high-strength ceramsite has the advantages of high cylinder compressive strength and high absorption.

Description

technical field [0001] The invention relates to a ceramsite, in particular to a high-strength ceramsite added with aluminum calcium sulfate, phthalate, water glass and a deodorant and a preparation method thereof. [0002] Background technique [0003] Sludge refers to the sediment, particulate matter and floating matter produced when water is treated by physical methods, chemical methods, physical chemical methods and biological methods. Sludge has a high moisture content (up to 80%), is perishable, has a foul smell, and is rich in refractory organic matter, pathogens, and heavy metals. If the sludge is not properly treated, it will pose a great threat to the environment and may also lead to the spread of diseases. [0004] Fly ash is the fine ash collected from the flue gas after coal combustion, and is the main solid waste discharged from coal-fired power plants. In recent years, with the development of the power industry, the amount of fly ash emitted by coal-fired po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/135
CPCY02P40/60
Inventor 陈域
Owner CHONGQING HAOPAN ENERGY SAVING TECH
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