Light high-strength ceramsite and preparation method thereof

一种高强陶粒、轻质的技术，应用在轻质高强陶粒及其制备领域，能够解决筒压强度低、液体激发剂危险、消耗大粘土等矿土等问题，达到强度轻质高强、减少工序、不易受损的效果

Active Publication Date: 2017-04-26
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 3. Most of the traditional ceramsite production uses clay and shale as the main raw materials after sintering, which will inevitably consume a large amount of clay and other mineral soils, which is not conducive to the protection of forest vegetation and farming, and does not conform to the principle of sustainable development
[0007] 6. In the Chinese patent "A Sludge Fly Ash High-Strength Ceramsite and Its Preparation Method" with application number 201410507652.4, it is proposed to use sludge and fly ash as the main raw materials to prepare high-strength ceramsite, wherein the amount of fly ash is 30- 55 parts, the cylinder compressive strength is 3-6.3MPa, and the bulk density is 500-650kg / m 3 , the amount of fly ash used in this method is not high, and the cylinder compressive strength is low
[0008] 7. In the Chinese patent "Lightweight and High Strength Fly Ash Ceramsite Formula" with application number 200610086665.4, it is proposed to prepare light and high strength fly ash ceramsite from fly ash, binder and admixture, and the amount of fly ash is 55-70%, and the cylinder compressive strength can reach 7.3MPa. This method uses a higher amount of fly ash, but the cylinder compressive strength is lower
[0013] 3. Liquid stimulants are more dangerous

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh solid raw materials: fly ash 850g, Guangdong white mud 20g, high alumina fly ash 100g, silica fume 30g, sodium lignosulfonate 8g, mix the above solid raw materials;

[0037] Preparation of activator: Weigh 5 g of sodium hydroxide, 40 g of 80% sodium water glass solution, add sodium hydroxide to the sodium water glass solution to dissolve, stir and cool to room temperature, continue stirring until a small amount of white precipitate appears, pour it into Put into a clean container, 1-20min at room temperature white crystals form agglomerates, crush the agglomerates to form a solid activator;

[0038] Mixing: The solid raw material is fully mixed with the solid activator to form a mixture;

[0039] Granulation: granulate the mixture to form granules;

[0040] Curing: Curing the granules at room temperature -100°C and 70-90% humidity for 1-2 hours to make them solidify;

[0041] Drying: Dry the solidified particles at a temperature of 120°C;

[0042] Sintering: Si...

Embodiment 2

[0045] Weigh solid raw materials: fly ash 880g, bauxite 40g, sodium lignosulfonate 10g, bentonite 70g, mix the above solid raw materials;

[0046] Prepare solid activator: take by weighing potassium hydroxide 15g, 90% potassium water glass solution 87g, add potassium hydroxide in the potassium water glass solution, dissolve, after stirring and cooling to room temperature, continue stirring until a small amount of white precipitate occurs, and It is poured into a clean container, and white crystals form agglomerates at room temperature for 1-20 minutes, and the agglomerates are crushed to form a solid activator;

[0047]Mixing: The solid raw material is fully mixed with the solid activator to form a mixture;

[0048] Granulation: granulate the mixture to form granules;

[0049] Curing: Curing the granules at room temperature -80°C and 70-90% humidity for 1-2 hours to make them solidify;

[0050] Drying: Dry the solidified particles for 2 hours at a drying temperature of 100°C...

Embodiment 3

[0054] Weigh the solid raw materials: 860g of fly ash, 40g of silica fume, 50g of bauxite, 20g of cellulose, 10g of CT017 from Light Polymers, and mix the above solid raw materials;

[0055] Preparation of solid activator: take lithium hydroxide 12g, 92% lithium water glass solution 80g, lithium hydroxide is added in lithium water glass solution, dissolve, after stirring and cooling to room temperature, continue stirring until a small amount of white precipitate appears, and It is poured into a clean container, and white crystals form agglomerates at room temperature for 1-20 minutes, and the agglomerates are crushed to form a solid activator;

[0056] Mixing: The solid raw material is fully mixed with the solid activator to form a mixture;

[0057] Granulation: granulate the mixture to form granules;

[0058] Curing: Curing the particles for 1-2 hours under certain temperature and humidity conditions to make them solidify;

[0059] Temperature: room temperature -80°C;

[0...

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Abstract

The invention provides light high-strength ceramsite comprising, by weight, 100 parts of solid raw materials and 1-15 parts of excitant. The solid raw materials include 100 parts of fly ash, 6-18 parts of high-aluminum fly ash, bauxite and red mud, 1-5 parts of micro-silica, 0.1-3 parts of surfactant and 6-24 parts of plasticizer. The excitant comprises 5-20 parts of alkali metal hydroxides and 80-95 parts of alkali metal silicates. The light high-strength ceramsite product is light and high in strength, the density level is 700-1100 kg / m<3>, the cylinder compressive strength can reach 10-20 MPa, and the ceramsite is not likely to be damaged. The ceramsite can be used for preparing lightweight aggregate high-performance concrete which serves as a load bearing structure and can be used for building wallboards, bridges, pipelines and the like, and has great application value.

Description

technical field [0001] The invention relates to the technical field of environmental protection buildings, building materials and solid waste treatment and resource utilization, and specifically relates to a light-weight high-strength ceramsite and a preparation method thereof. Background technique [0002] 1. Fly ash is a solid waste of coal-fired power generation. The annual output of fly ash in my country is about 600 million tons, and the comprehensive utilization rate is about 70%. There is a large amount of accumulation every year. If these fly ash are not treated, there will be Flying dust directly pollutes the atmosphere and poses a threat to the human respiratory system; in addition, if the fly ash is discharged into the water system, the toxic chemicals in it will pollute the domestic water and further threaten human health. The recycling is strongly supported by the state and local governments. [0003] 2. Ceramsite is a kind of artificial lightweight aggregate wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138C04B33/135C04B33/132C04B33/13C04B33/32C04B33/30
CPCC04B33/1305C04B33/131C04B33/1315C04B33/1322C04B33/1352C04B33/138C04B33/30C04B33/32C04B2235/96C04B2235/77C04B2235/3217C04B35/18C04B2235/349C04B35/62204C04B2235/3201C04B2235/3418C04B2235/3427C04B2235/3463C04B2235/3203C04B35/62695C04B2235/6562C04B2235/3208C04B33/132C04B35/6365C04B35/632C04B35/6316C04B35/64Y02P40/60C04B33/04C04B2235/36C04B2235/606C04B2235/6567
Inventor 贾屹海王希宏陈思颖王川行
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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