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Method for preparing silicate ceramic pellets by using waste aeroconcrete building blocks

A technology of air-entrained concrete and silicate, which is applied in the field of resource utilization of inorganic solid waste, can solve the problems of large economic losses, affect the normal production of enterprises, and affect the healthy development of the aerated concrete industry, and achieve the effect of increasing the growth rate

Active Publication Date: 2012-04-25
浙江中劲环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The huge economic loss of the enterprise has seriously affected the normal production of the enterprise. The aerated concrete enterprises have encountered a bottleneck in the treatment of waste aerated concrete blocks. If it is not resolved as soon as possible, it will affect the healthy development of the aerated concrete industry

Method used

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  • Method for preparing silicate ceramic pellets by using waste aeroconcrete building blocks
  • Method for preparing silicate ceramic pellets by using waste aeroconcrete building blocks
  • Method for preparing silicate ceramic pellets by using waste aeroconcrete building blocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: The present invention utilizes waste aerated concrete block to make the method for silicate ceramsite, comprises the following steps:

[0045] 1) After the aerated concrete block is broken, put it into a ball mill and grind it into powder, and the fineness is controlled to be ≤8% on a 180-mesh sieve.

[0046] 2) The effective calcium oxide content in the lime is determined to be 73.4%, the silica content in the quartz powder is 98.3%, the waste aerated concrete acid-insoluble matter is 36.4%, and the silica content in the acid-insoluble matter is 76.1%, then The content of unreacted silica in air-entrained concrete is 27.7%.

[0047] 3) Calculate the amount of each raw material used, and adjust the calcium-silicon ratio to 0.83.

[0048] Lime 100kg, quartz powder 100kg, gypsum powder 2.0kg, ground aerated concrete powder 10kg, mixing water 40kg.

[0049] Check the calcium-silicon ratio:

[0050] Calcium Oxide = Calcium Oxide 石灰 =100*0.734=73.4 ...

Embodiment 2

[0060] Example 2: The present invention utilizes waste aerated concrete block to make the method for silicate ceramsite, comprises the following steps:

[0061] 1) After the aerated concrete block is broken, put it into a ball mill and grind it into powder, and the fineness is controlled to be ≤8% on a 180-mesh sieve.

[0062] 2) The effective calcium oxide content in lime was determined to be 83.5%, the silicon dioxide content in fly ash was 53.3%, the waste aerated concrete acid-insoluble matter was 22.89%, and the silicon dioxide content in acid-insoluble matter was 62.91%. Then the content of unreacted silica in air-entrained concrete is 14.4%.

[0063] 3) Calculate the amount of each raw material used, and adjust the calcium-silicon ratio to 0.80.

[0064] Lime 100kg, fly ash 115kg, gypsum powder 2.2kg, ground aerated concrete powder 400kg, mixing water 100kg.

[0065] Check the calcium-silicon ratio:

[0066] Calcium Oxide = Calcium Oxide 石灰 =100*0.835=83.5...

Embodiment 3

[0076] Example 3: The present invention utilizes waste aerated concrete block to make the method for silicate ceramsite, comprises the following steps:

[0077] 1) After the aerated concrete block is broken, put it into a ball mill and grind it into powder, and the fineness is controlled to be ≤8% on a 180-mesh sieve.

[0078] 2) The effective calcium oxide content in lime was determined to be 78.1%, the silica content in fly ash was 55.3%, the acid-insoluble matter in waste aerated concrete was 29.4%, and the silica content in acid-insoluble matter was 57.48%. Then the content of unreacted silica in air-entrained concrete is 16.9%.

[0079] 3) Calculate the amount of each raw material used, and adjust the calcium-silicon ratio to 0.70.

[0080] Lime 100kg, fly ash 200kg, gypsum powder 3.0kg, ground aerated concrete powder 100kg, mixing water 80kg.

[0081] Check the calcium-silicon ratio:

[0082] Calcium Oxide = Calcium Oxide 石灰 =100*0.781=78.1

[0083] Si...

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Abstract

The invention discloses a method for preparing silicate ceramic pellets by using waste aeroconcrete building blocks, comprising the following steps: crushing the waste aeroconcrete building blocks, then grinding the crushed waste aeroconcrete building blocks into powder in a ball mill; determining the content of effective calcium oxide in lime, the content of silica in fly ash or quartz powder, and the content of unreacted silica in the waste aeroconcrete; blending lime, fly ash or quartz powder, gypsum powder, aeroconcrete powder, and water for stirring, and stirring, standing, and rolling, putting the rolled mixture in a balling disc for preparing into pellets, placing the prepared balls at room temperature and moisturizing for maintenance, putting the maintained ceramic pellets in an autoclave for autoclaving to obtain the silicate ceramic pellets. The invention effectively solves the problem of recycling waste aeroconcrete with high utilization rate. According to the invention, toaeroconcrete factories, the problem of waste stockpiling is solved, and the benefits of additional products are increased.

Description

technical field [0001] The invention belongs to the field of resource utilization of inorganic solid waste, in particular to a method for making silicate ceramsite by using waste aerated concrete blocks. Background technique [0002] Air-entrained concrete blocks have light weight and good thermal insulation performance. They can be used as wall materials for energy-saving buildings, and have become the leading product in the new building wall market in various places. However, its strength is not high, causing a large number of blocks to be damaged during the production process. Generally, the damage of aerated concrete block enterprises in the production process reaches 5% to 8%. In addition to the damage during the factory transportation and construction site use, the scrap rate can be high. Reach about 10%, and some enterprises even reach 15%. The reuse of discarded aerated concrete is a problem to be solved urgently by the majority of aerated concrete factories. [000...

Claims

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Application Information

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IPC IPC(8): C04B38/00B09B3/00
Inventor 杨秀丽崔崇江金国郑伟琴程佳平朱志萍
Owner 浙江中劲环保科技有限公司
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