A kind of sound-absorbing wall filler and preparation method thereof
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A filler and wall technology, which is applied in the preparation of sound-absorbing wall fillers and the field of sound-absorbing wall fillers, can solve problems such as difficulty in reflecting economic value, achieve good sound-absorbing effects, improve strength, and reduce production costs. Effect
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Problems solved by technology
Sludge is the most waste after water treatment. At present, the treatment of sludge is mainly landfill, incineration, or composting, and its economic value is difficult to reflect.
Method used
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Embodiment 1
[0022] In the embodiment of the present invention, a sound-absorbing wall filler includes raw materials in parts by weight: 2000 parts of sludge, 3500 parts of water, 90 parts of hydrolyzed polymaleic anhydride, 53 parts of water reducing agent, and 200 parts of calcium hydroxide , 8000 parts of sulphoaluminate cement. The water reducing agent is polycarboxylic acid with a mass content of 20% after dilution.
[0023] The preparation method of the sludge-containing sound-absorbing wall filler, the specific steps are as follows:
[0024] Sludge pretreatment: put the original sludge in an oven at 60°C for drying treatment, so that the moisture content is 2%;
[0025] Primary mixing: Put the pretreated raw sludge into the mixer, and add calcium hydroxide, hydrolyzed polymaleic anhydride and 40% of the water in the raw materials for primary mixing, and make the preliminary sludge mixture after mixing evenly. The sludge preliminary mixture is placed in a container with a cover to ...
Embodiment 2
[0032] In the embodiment of the present invention, a sound-absorbing wall filler containing sludge, the raw materials in parts by weight include: 1800 parts of sludge, 3300 parts of water, 80 parts of hydrolyzed polymaleic anhydride, 45 parts of water reducer, hydrogen oxidized Calcium 190 parts, sulphoaluminate cement 8000 parts. The water reducing agent is polycarboxylic acid with a mass content of 20% after dilution.
[0033] The preparation method of the sludge-containing sound-absorbing wall filler, the specific steps are as follows:
[0034] Sludge pretreatment: put the original sludge in an oven at 60°C for drying treatment, so that the moisture content is 3%;
[0035] Primary mixing: Put the pretreated raw sludge into the mixer, and add calcium hydroxide, hydrolyzed polymaleic anhydride and 60% of the water in the raw materials for primary mixing, and make the preliminary sludge mixture after mixing evenly. The sludge preliminary mixture is placed in a container with...
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Abstract
The invention discloses sound-absorbing wall body filler and a preparation method thereof. A raw material containing the sound-absorbing wall body filler comprises sludge, sulphate aluminium cement, water, calcium hydroxide, hydrolytic polymaleic anhydride and a water reducer. The preparation method comprises the following steps: sludge pre-treatment; mixing and placing; stirring; die-filling; die-disassembling; and maintenance. The sludge-containing sound-absorbing building material produced is the environment-friendly sound-absorbing building material which has excellent insect preventing, corrosion preventing and sound absorbing abilities, and the alkaline environment thereof inhibits growth of bacteria, so that sludge organic matters of a water plant are prevented from giving out peculiar smells under the action of bacteria. Meanwhile, the sulphate aluminium cement is added, so that the product strength is improved to 5MPa, and the demand on the wall body filler is met. The raw material is a pollutant of sludge of the water plant. After the product is manufactured, the environment can be protected, secondary pollution of sludge of the water plant on soil and water is reduced, the economical benefit can be also created, and the sound-absorbing wall body filler not only is economical, but also is environmentally friendly.
Description
technical field [0001] The invention relates to the field of sound-absorbing building materials for building materials, in particular to a sound-absorbing wall filler. [0002] The invention also relates to a preparation method of the sound-absorbing wall filler. Background technique [0003] The sound-absorbing material has a large number of micropores that are connected to each other and open to the outside, that is, it has a certain degree of air permeability. The sound-absorbing walls made of sound-absorbing materials are widely used in gymnasiums, conference rooms, waiting halls, waiting rooms, exhibition halls, audience halls, large shopping malls and restaurants, etc. However, the high cost of traditional sound-absorbing materials makes the cost of sound-absorbing walls high. Sludge is the most waste after water treatment. At present, the treatment of sludge is mainly landfill, incineration, or composting, and its economic value is difficult to reflect. How to incr...
Claims
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