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Method for producing aerated concrete with refuse incinerator slag

A technology of waste incineration slag and aerated concrete, which is applied in the field of solid waste resource utilization, can solve the problems of undiscovered research reports on waste incineration slag aerated concrete, and achieve the effect of reducing treatment costs and production costs

Inactive Publication Date: 2013-11-13
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, through literature search and patent search, no domestic research reports on the use of waste incineration slag as an air-entraining agent for the production of air-entrained concrete have been found, let alone reports on the use of municipal solid waste incineration slag as an air-generating agent to produce aerated concrete.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 The method of producing air-entrained concrete with waste incineration slag: the air-entrained concrete composition contains 57% fly ash, 20% quicklime, 10% P.0.42.5 ordinary Portland cement, 3% gypsum, 10% Garbage incineration slag.

[0043] The total water-to-material ratio is 0.60-0.70, and the mixing water is warm water at 60°C. Add fly ash and water to make a slurry, stir for 3-4 minutes, add cement, stir for 3-4 minutes, add gypsum, stir for 2-3 minutes, add quicklime, stir for 2-3 minutes, pump until the slurry is poured and stirred In the tank, turn on the pouring car owner's mixer for secondary mixing. Add the measured garbage incinerator slag, stir for 30-50s, inject into the mold to generate gas, stop at 60°C for 2 hours, and cut into pieces. Send it into the autoclave, autoclave at 170-180°C and 0.8-1.2MPa pressure, and leave the autoclave at constant temperature for 8-10 hours.

[0044] The product leaves the factory after 4-7 days of natural c...

Embodiment 2

[0045] Example 2 The method of producing air-entrained concrete with waste incineration slag: the air-entrained concrete composition contains 57% granulated blast furnace slag, 20% quicklime, 10% P.0.42.5 ordinary Portland cement, 3% gypsum, 10 % Garbage incineration slag.

[0046] The total water-to-material ratio is 0.60-0.70, and the mixing water is warm water at 60°C. Add water to granulated blast furnace slag to make a slurry, stir for 3-4 minutes, add cement, stir for 3-4 minutes, add gypsum, stir for 2-3 minutes, add quicklime, stir for 2-3 minutes, pump until pouring car slurry In the mixing tank, turn on the pouring car owner's mixer for secondary mixing. Add the measured garbage incinerator slag, stir for 30-50s, inject into the mold to generate gas, stop at 60°C for 2 hours, and cut into pieces. Send it into the autoclave, autoclave at 180-190°C and 1.0-1.2MPa pressure, and leave the autoclave at constant temperature for 6-8 hours.

[0047] The product leaves the...

Embodiment 3

[0048] Example 3 The method of producing air-entrained concrete with waste incineration slag: the air-entrained concrete composition contains 38-42% quartz sand, 30-32% slag, 18-20% P.0.42.5 ordinary Portland cement, 10 % Garbage incineration slag, and an appropriate amount of gas-generating regulator.

[0049] The total water-to-material ratio is 0.30-0.50, and the mixing water is warm water at 60°C. Mix the slag, quartz sand and cement dry powder evenly, beat the slurry and mix evenly, stir for 3-4 minutes, pump it into the slurry mixing tank of the pouring car, turn on the main mixer of the pouring car, and perform the second mixing. Add the measured garbage incinerator slag, stir for 15-30s, inject into the mold to generate gas, stop at 60°C for 2 hours, and cut into pieces. Send it into the autoclave, autoclave at 210°C and 1.5MPa pressure, and leave the autoclave at constant temperature for 6-8 hours.

[0050] The product leaves the factory after 4-7 days of natural cu...

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PUM

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Abstract

The invention provides a method for producing aerated concrete with refuse incinerator slag. The method is characterized in that the following raw materials are added by mass percent: 30-60% of fly ash, quartz sand and / or granulated blast furnace slag, 5-15% of Portland cement, 15-25% quicklime, 3-5% of dihydrate gypsum and 10-40% (preferably 9.5-39%) of refuse incinerator slag. Compared with the prior art, the method has the following advantages: (1) the refuse incinerator slag is greatly utilized to produce aerated concrete, so that the method belongs to the resource utilization technology and can substantially reduce the high treatment costs; and (2) the metallic aluminium is fully utilized.

Description

technical field [0001] The invention belongs to the field of resource utilization of solid waste, and in particular relates to a method for producing aerated concrete with waste incineration slag. Background technique [0002] Due to the complex composition of municipal solid waste, landfill is the main way to deal with it at present. However, with the further development of social urbanization, the amount of garbage discharge is increasing, and the whole city will be almost surrounded by garbage. Since there are a lot of substances with calorific value in domestic waste, heat will be released after burning, which can be used to generate electricity, and the volume will be greatly reduced. But this has brought about the disposal of waste incineration ash. Waste incineration ash is mainly divided into fly ash and slag. The former contains a certain amount of dioxin, which is generally believed to be relatively toxic. The general treatment method is to bury it after stabiliz...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/14
Inventor 宋远明李宝玲丁天王志娟
Owner YANTAI UNIV
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