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Method for producing bricks from silt and sludge

A technique for making bricks and sludge from sludge, which is applied in the field of brick making using sludge and sludge as raw materials, which can solve the problems of lack of control of the moisture content of blanks and cumbersome steps, and achieve significant environmental protection effects, easy access, and cost reduction Effect

Inactive Publication Date: 2012-05-30
常州市振东新型节能建筑材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is environmentally friendly, the step of dry powder manufacturing is cumbersome and lacks control of the moisture content of the billet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The sludge brick making method of the present embodiment comprises the following steps:

[0034] ①Pile up the sludge obtained from the dredging of inland rivers and lakes, as well as the sludge obtained from papermaking, printing and dyeing industry sewage, and domestic sewage treatment in the parking lot. The parking lot covers an area of ​​3,000 square meters and is divided into 3 transparent steel tile canopies; the underground is dug to a depth of 1 meter, surrounded by masonry walls, and the bottom and surrounding areas are treated with anti-seepage. The maximum depth of stacked silt and sludge is 2 meters, and 300 tons (almost 200 cubic meters) are piled up every day. The parking lot can be stacked for 15 days. After 15 days of stacking, the moisture content of the sludge and sludge is reduced from 80 to 85% to 60. %about.

[0035] ②Sludge and sludge with a moisture content of ≤60% are transported to the first-stage mixer through the feed box, and mixed with fly ...

Embodiment 2

[0043] The sludge brick making method of the present embodiment comprises the following steps:

[0044] ① Same as in Example 1.

[0045] ②Sludge and sludge with a moisture content of ≤60% are transported to the first-stage mixer through the feed box, and mixed with fly ash, chaff or sawdust, cinder and black sand to make the moisture content of the mixture ≤30%. Carry out stirring and mixing according to following percentage by weight here: total 70% of silt and sludge (silt accounts for 1 / 3rd, and sludge accounts for 2 / 3rds), fly ash 5%, rice chaff 3%, fine cinder 18%, Black sand 4%.

[0046] 3. substantially the same as in Example 1, the moisture content of the mixture is 21%.

[0047] ④Substantially the same as in Example 1, control the water content to 19.5%, and obtain the billet.

[0048] 5. It is basically the same as in Example 1, three steel shafts are arranged in the extruding device, and the billet is made into a three-hole brick wet billet with a moisture conten...

Embodiment 3

[0051] The sludge brick making method of the present embodiment comprises the following steps:

[0052] ① Same as in Example 1.

[0053] 2. substantially the same as Example 1, stir and mix according to the following percentages by weight here: sludge and sludge account for 65% altogether (silt accounts for 2 / 3rds, and sludge accounts for 1 / 3rd), fly ash 7%, rice bran 4%, fine cinder 18%, black sand 6%.

[0054] 3. Same as in Example 1, the moisture content of the mixture is 21.5%.

[0055] ④Substantially the same as in Example 1, the moisture content is controlled to be 19%, and the billet is obtained.

[0056] 5. It is basically the same as in Example 1, no steel shaft is arranged in the extruding device, and the billet is made into a solid brick wet billet with a moisture content of 18% by the extruding device and the cutting device.

[0057] ⑥ Same as in Example 1.

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Abstract

The invention discloses a method for producing bricks from silt and sludge, which comprises the following steps of: stacking silt and sludge of which the water content is 80-85% in a parking field to enable the water content of the silt and the sludge to be less than or equal to 60% for standby; conveying the silt and the sludge of which the water content is less than or equal to 60% to a primarystirrer through a feeding box for stirring together with fly ash, rice chaffs or wood flour, coal slag and black sand to enable the water content of the mixture to be less than or equal to 30%; putting the mixture in an aging field for aging to enable the water content of the mixture to be less than or equal to 22%; conveying the mixture to a secondary stirrer through the feeding box, and adding water or fly ash according to the degree of dryness and wetness to obtain a blank preparing material of which the water content is less than or equal to 20%; preparing the blank preparing material into a wet blank of which the water content is 17.8-18.8% through extruding and cutting devices; and roasting to obtain a finished product brick. In the method of the invention, silt and sludge are used as main raw materials for producing bricks; on one hand, clay does not need to be used, and the cultivated land can not be destroyed; and on the other hand, the invention solves the problem of treatment of silt and sludge, saves land resources and has obvious effect of environmental protection.

Description

technical field [0001] The invention relates to a method for manufacturing building materials, in particular to a method for making bricks using silt and sludge as raw materials. Background technique [0002] For a long time, building bricks are basically made of pure clay. Although pure clay can be used to make bricks to meet the needs of construction, the clay is all taken from the upper soil on the surface. If pure clay is used to make bricks for a long time, it will Destroy arable land and cause a large amount of arable land to be abandoned. For my country, whose per capita land resources are lower than the world average, it is particularly important to protect land resources and develop and produce various non-clay wall materials. [0003] Authorized Publication No. CN1108201C Chinese Patent "Using Sludge Thermal Energy to Burn Lightweight Bricks" discloses a scheme that dehydrates the sludge to a water content of 50-60%, and makes 3-9mm particles, and after drying, T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13C04B33/132C04B33/135
CPCY02P40/60
Inventor 汤文星
Owner 常州市振东新型节能建筑材料厂
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