Preparation method of environment-friendly autoclaved aerated concrete block

A technology of concrete block and autoclaved aeration, which is applied in the field of building materials to achieve the effects of high ultimate load and compressive strength, large amount of foaming, and good foaming effect.

Inactive Publication Date: 2017-11-07
浙江德义建筑设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been relevant reports on the utilization of ceramic waste, the ceramic waste produced by ceramic enterprises has not been fully consumed in large quantities. At present, in the construction of high-rise buildings, a large number of bricks are needed, and the ultimate load and compressive strength are not tested. The requirements are extremely high. How to use ceramic waste to prepare bricks and meet the requirements of ultimate load and compressive strength needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of a kind of environment-friendly autoclaved aerated concrete block proposed by the present invention comprises the following steps:

[0022] S1. Mix and grind ceramic waste, loess, quicklime, and desulfurized gypsum, and send them to a sintering machine for sintering to obtain mixed aggregate;

[0023] S2. Send methyl acrylate, ethylene oxide, Al / Mg / Ce inorganic salt composite catalyst into a sealed reactor, under nitrogen protection, heat up and stir, let stand, cool, add rosin, phenol, sodium polynaphthalenesulfonate, Mix concentrated sulfuric acid, heat up and stir, add sodium hydroxide and water in turn and stir to obtain a foaming agent;

[0024] S3, adding powdered sodium silicate, calcium lignosulfonate, and anhydrous sodium sulfate to the mixed aggregate for ball milling, adding cement, polyvinyl alcohol, and foaming agent and stirring to obtain a mixed slurry;

[0025] S4. Pouring the mixed slurry into a mold to form it, heating and pre...

Embodiment 2

[0027] The preparation method of a kind of environment-friendly autoclaved aerated concrete block proposed by the present invention comprises the following steps:

[0028] S1. Mix and grind 20 parts of ceramic waste, 25 parts of loess, 4 parts of quicklime, and 12 parts of desulfurized gypsum in parts by weight until the particle size is less than 0.05 mm, and send them to a sintering machine for sintering for 15 minutes at a sintering temperature of 1150 ° C to obtain a mixed aggregate ;

[0029] S2. Put 40 parts of methyl acrylate, 4 parts of ethylene oxide, and 0.1 part of Al / Mg / Ce inorganic salt composite catalyst into a sealed reaction kettle by weight, raise the temperature to 96°C, stir for 4 hours, and let stand for 4 hours under the protection of nitrogen. , cooling, add 5 parts of rosin, 8 parts of phenol, 1 part of sodium polynaphthalene sulfonate, 2 parts of concentrated sulfuric acid and mix, heat up to 60°C and stir for 1.5h, then add 0.5 parts of sodium hydroxid...

Embodiment 3

[0033] The preparation method of a kind of environment-friendly autoclaved aerated concrete block proposed by the present invention comprises the following steps:

[0034] S1. Mix and grind 40 parts of ceramic waste, 15 parts of loess, 10 parts of quicklime, and 5 parts of desulfurized gypsum in parts by weight until the particle size is less than 0.05 mm, and send it to a sintering machine for sintering for 35 minutes at a sintering temperature of 1050 ° C to obtain a mixed aggregate. ;

[0035] S2. Put 80 parts of methyl acrylate, 1 part of ethylene oxide, and 0.2 parts of Al / Mg / Ce inorganic salt composite catalyst into a sealed reaction kettle in parts by weight. Under the protection of nitrogen, heat up to 85°C and stir for 20 hours, then let stand for 2 hours , cool, add 10 parts of rosin, 2 parts of phenol, 2 parts of sodium polynaphthalene sulfonate, and 1 part of concentrated sulfuric acid to mix, heat up to 70°C and stir for 0.5h, then add 1 part of sodium hydroxide a...

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PUM

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Abstract

The invention discloses a preparation method of an environment-friendly autoclaved aerated concrete block. The method comprises the following steps: mixing and grinding a ceramic waste, loess, quicklime and desulfurized gypsum, and feeding the mixture into a sintering machine to obtain mixed aggregates; feeding methyl acrylate, ethylene oxide and an Al/Mg/Ce inorganic salt composite catalyst into a sealed reactor, carrying out heating, stirring, standing and cooling under nitrogen protection, adding rosin, phenol, sodium polynaphthalene sulfonate and concentrated sulfuric acid for mixing, and carrying out heating and stirring; sequentially adding sodium hydroxide and water for stirring to obtain a foaming agent; adding powdery sodium silicate, calcium lignosulphonate and anhydrous sodium sulfate to the mixed aggregates for ball-milling, and adding cement, polyvinyl alcohol and the foaming agent for stirring to obtain mixed slurry; and casting the mixed slurry into a mold for molding, and carrying out heating, pre-curing, demolding, cutting, autoclaved curing and cooling to obtain the environment-friendly autoclaved aerated concrete block.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing an environment-friendly autoclaved aerated concrete block. Background technique [0002] At present, in the production process of ceramics, three major pollutions are mainly produced: waste water, waste gas and waste ceramics. Among them, waste ceramics are mainly waste materials produced by grinding and polishing processes in the process of manufacturing ceramic flat tiles. A general-scale ceramic brick factory produces more than 100 tons of waste ceramics a day. At present, due to the lack of timely treatment and utilization of these waste materials, this waste material has been continuously produced and accumulated with the development of industry, and has seriously polluted people's living environment. These waste ceramics that do not naturally degrade by themselves not only occupy landfills, but also become slurry when they meet water, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B38/10
CPCC04B28/26C04B2201/20C04B2201/50C04B24/18C04B22/147C04B7/00C04B24/2623C04B18/16C04B14/04C04B18/064C04B14/30C04B24/34C04B24/02C04B24/22C04B24/045C04B22/08C04B22/141C04B22/062C04B38/10C04B40/024
Inventor 沈慧勇
Owner 浙江德义建筑设备有限公司
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