Preparing method of ceram site fully using biosolid and sludge

A technology of biological sludge and silt, which is applied in the field of making ceramsite and completely using biological sludge and silt to make ceramsite, can solve the problems that cannot be realized, and achieve the effects of low cost, good fire resistance, and good heat insulation performance

Active Publication Date: 2009-11-25
ZHEJIANG FANGYUAN BUILDING MATERIALS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method still adopts the clay (up to 71%-89%) of larger percentage by weight and cannot realize the purpose of truly turning waste into wealth and saving land materials

Method used

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  • Preparing method of ceram site fully using biosolid and sludge
  • Preparing method of ceram site fully using biosolid and sludge
  • Preparing method of ceram site fully using biosolid and sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, according to the proportion of Example 1 in Table 7, the river silt and the formula of dewatered sludge were evenly mixed, placed for aging at room temperature, and placed for 7 days for partial dehydration. After dehydration, the water content of the river silt and dewatered sludge was 41.5 %, through the feeder into the twin-shaft mixer for full mixing, the mixing time is 20 minutes; then the biological sludge and sludge after the above mixing are crushed in the roller crusher, the crushing time is 1 minute , carry out secondary granulation after crushing, for the first time use the roller granulator to granulate the rollers for 4 minutes, and for the second time use the granulation drum to granulate for 6 minutes, the particle size of the granules after the secondary granulation is 5- 15mm. Put the above-mentioned granulated pellets into a double-cylinder rotary kiln for preheating, the preheating temperature is 250°C, and the preheating t...

Embodiment 2-4

[0047] Example 2-4, according to the ratio of Example 2-4 in Table 7, the river silt and the formula of dewatered sludge were evenly mixed, placed for aging at room temperature, and placed for 7 days for partial dehydration. After dehydration, the river silt and dewatered sludge The moisture content is 40-45%, and other technical processes are the same as embodiment 1, no longer repeat them.

Embodiment 5

[0049] According to the proportion of embodiment 5 in table 7, the piling sludge and the formula of dewatered sludge are evenly mixed, placed for aging at normal temperature, and placed for 7 days to carry out partial dehydration. After dehydration, the water content of river sludge and dewatered sludge is 34.2%. The feeder is put into the double-shaft mixer for full mixing, and the mixing time is 5 minutes; then the biological sludge and sludge after the above mixing are crushed in the roller crusher, and the crushing time is 5 minutes. Carry out secondary granulation, the first time using a roller granulator to granulate for 6 minutes, and the second time using a granulation drum for 4 minutes, and the particle size of the granular material after the secondary granulation is 2-15mm.

[0050] Put the above-mentioned granulated pellets into a double-cylinder rotary kiln for preheating, the preheating temperature is 400°C, and the preheating time is 15 minutes; Minutes; After t...

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Abstract

This invention discloses a preparing method of ceram site fully using biosolid and sludge, including steps as follows: a, mixing materials; b, preparing particles; c, sintering at temperature of 1000-1300 degrees centigrade after pre-heating for 5-20 minutes; cooling at temperature of 50-200 degrees centigrade for 10-30 minutes after sintering, thereby preparing finished ceram site product. Accordingly, this invention makes effective use of urban mud, and changes industrial waste solid into valuable; further, this utilyit model is low in preparation cost and suitable for large-scaled production.

Description

technical field [0001] The invention relates to a method for making ceramsite, in particular to a method for making ceramsite completely by using biological sludge and silt. It belongs to the technical field of lightweight materials. Background technique [0002] Ceramsite has excellent properties, such as low density, high cylinder compressive strength, high porosity, high softening coefficient, good frost resistance, and excellent alkali-aggregate reactivity. Especially because of its low density, internal porosity, uniform shape and composition, and certain strength and firmness, ceramsite has multifunctional characteristics such as light weight, corrosion resistance, frost resistance, earthquake resistance and good insulation. Utilizing these excellent properties of ceramsite, it can be widely used in building materials, horticulture, refractory and thermal insulation materials, chemical industry, petroleum and other departments. The application fields are becoming wide...

Claims

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Application Information

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IPC IPC(8): C04B38/00B09B3/00
Inventor 杨晓华田生春童丽美
Owner ZHEJIANG FANGYUAN BUILDING MATERIALS TECH
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