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Preparation method of sound-insulation aerated concrete building block prepared from dyeing sludge

A technology for aerated concrete and printing and dyeing sludge, applied in the field of building materials, can solve the problems of poor geotechnical strength, easy corruption, large capacity, etc., and achieve the effects of improving strength and toughness, reducing pollution, and improving toughness and strength.

Active Publication Date: 2016-11-02
湖州德海新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The moisture content of sludge after conventional dehydration treatment is about 80%, large capacity, soft, poor geotechnical strength, easy to be corrupted and foul smelling in stacking and transportation projects

Method used

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  • Preparation method of sound-insulation aerated concrete building block prepared from dyeing sludge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing soundproof aerated concrete blocks from printing and dyeing sludge, comprising the following steps:

[0027] Step 1: Add the printing and dyeing sludge into lime water and soak for 12 hours, press filter until the water content is 22%, add the crushed polyester scraps, stir evenly, and dry at 38°C until the water content is 10%;

[0028] Step 2: Mix and grind river sand, lime, gypsum, expanded vermiculite powder and dried printing and dyeing sludge, pass through a 120-mesh sieve, take the under-sieve, and heat with steam;

[0029] Step 3: Add aluminum powder, stir, and steam to obtain aerated concrete mixture slurry;

[0030] Step 4: pour the air-entrained concrete mixture into shape, perform gas generation, static stop, cutting, and steam curing to obtain aerated concrete blocks. The temperature of the steam curing is 48°C, the pressure is 1.1MPa, and gas generation Stop for 3.5h.

[0031] In the solid content of the printing and dyeing sludge ...

Embodiment 2

[0042] A method for preparing soundproof aerated concrete blocks from printing and dyeing sludge, comprising the following steps:

[0043] Step 1: add printing and dyeing sludge to lime water and soak for 10 hours, press filter until the water content is 20%, add crushed polyester scraps, stir evenly, and dry at 35°C until the water content is 12%;

[0044] Step 2: Mix and grind river sand, lime, gypsum, expanded vermiculite powder and dried printing and dyeing sludge, pass through a 120-mesh sieve, take the under-sieve, and heat with steam;

[0045] Step 3: Add aluminum powder, stir, and steam to obtain aerated concrete mixture slurry;

[0046] Step 4: pour the air-entrained concrete mixture into shape, perform gas generation, static stop, cutting, and steam curing to obtain aerated concrete blocks. The temperature of the steam curing is 50°C, the pressure is 1.2MPa, and gas Stop for 4 hours.

[0047] In the solid content of the printing and dyeing sludge in the step 1, the...

Embodiment 3

[0058] A method for preparing soundproof aerated concrete blocks from printing and dyeing sludge, comprising the following steps:

[0059] Step 1: Add the printing and dyeing sludge into lime water and soak for 15 hours, press filter until the water content is 25%, add the crushed polyester scraps, stir evenly, and dry at 40°C until the water content is 8%;

[0060] Step 2: Mix and grind river sand, lime, gypsum, expanded vermiculite powder and dried printing and dyeing sludge, pass through a 120-mesh sieve, take the under-sieve, and heat with steam;

[0061] Step 3: Add aluminum powder, stir, and steam to obtain aerated concrete mixture slurry;

[0062] Step 4: pour the air-entrained concrete mixture slurry into shape, perform gas generation, static stop, cutting, and steam curing to obtain aerated concrete blocks. The temperature of the steam curing is 45°C, the pressure is 1.0MPa, and gas generation Stop for 3h.

[0063] In the solid content of the printing and dyeing slu...

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Abstract

The invention discloses a preparation method of sound-insulation aerated concrete building block prepared from dyeing sludge. The invention uses scrap from dyeing sludge and textile fiber, reduces pollution, and enhances the toughness and strength of aerated concrete; the vermiculite powder improves the sound insulation effect; pretreatment on the dyeing sludge by lime water can enhance corrosion the performance of the block. The product has the advantages of broad source of raw materials, simple production technology, obviously improved product quality and performance compared with the traditional building block.

Description

technical field [0001] The invention relates to the technical field of building materials and the technical field of waste treatment, in particular to a method for preparing sound-insulating aerated concrete blocks from printing and dyeing sludge. Background technique [0002] The textile printing and dyeing industry is an important industry in Zhejiang Province, especially Huzhou City, and is also the main source of industrial wastewater in Huzhou City. Wastewater treatment in the textile industry produces a large amount of surplus sludge, which contains dyes, pastes, additives, etc., and has complex components. The structure of dyes has nitro and amino compounds and heavy metals such as copper, chromium, zinc, and mercury. At present, most of the sludge treatment in textile wastewater treatment plants only has a simple process of concentration and dehydration, and then transported abroad for disposal. The moisture content of the sludge after conventional dehydration treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B14/06C04B14/20C04B16/06C04B18/04C04B22/04C04B22/06C04B111/40
CPCY02W30/91C04B28/14C04B2111/40C04B2201/20C04B2201/50
Inventor 姚爱勤陈伟星
Owner 湖州德海新型建材有限公司
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