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Fine-powder waste residue permeable sintered pavement brick and production method thereof

A technology for pavement bricks and waste slag, applied in the field of fine powdery waste slag permeable sintered pavement bricks and its preparation, can solve the problems of unfired permeable bricks that are difficult to apply, low strength, poor frost resistance, etc., and achieve standardized production and promotion. The effect of high waste residue content and high water permeability coefficient

Active Publication Date: 2017-11-21
中条山有色金属集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in this field, the purpose of the present invention is to provide a new type of permeable sintered pavement brick, which is suitable for the accumulation of fine-grained tailings and other wastes to create holes and prepare permeable bricks with high water permeability coefficient, high strength and high frost resistance. , in order to solve the problems of low strength and poor frost resistance of existing concrete unfired permeable bricks. The current bulk industrial wastes such as tailings and sludge are basically fine-grained powders. The required aggregate particles are difficult to be used in large quantities; at the same time, raw materials such as tailings do not have pozzolanic activity, and it is difficult to apply them to unfired permeable bricks

Method used

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  • Fine-powder waste residue permeable sintered pavement brick and production method thereof
  • Fine-powder waste residue permeable sintered pavement brick and production method thereof
  • Fine-powder waste residue permeable sintered pavement brick and production method thereof

Examples

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Embodiment 1

[0036] Use copper ore beneficiation tailings (60-70% of particle size below 0.075mm) as raw material to prepare waste slag ceramic permeable bricks. For the process, see figure 1 , including steps:

[0037] S1, the waste residue of 80 mass parts and the plastic soil (clay) of 20 mass parts are mixed and dispersed into mixed powder, as the raw material of the bottom layer; The waste residue of 70 mass parts and the plastic soil (bauxite waste material) of 30 mass parts ) is mixed and dispersed into a mixed powder, which is used as a raw material for the surface layer;

[0038] S2. The mixed powder is granulated by adding water in the disc granulator. During the granulation process, continuous high-pressure atomization and water spraying. The amount of water added is 30% of the mass of the mixed powder, and 20% (external mixing) dry powder binder is sprinkled. (shale), evenly wrapped on the surface of the material ball.

[0039] S3. Sieve the produced particles. In the particl...

Embodiment 2

[0044] Using metallurgical sludge (60% of which has a particle size below 0.075mm) as the main raw material to prepare fine-grained waste slag ceramic permeable bricks, wherein step 1 is:

[0045] S1, 70 mass parts of sludge and 30 mass parts of plastic soil are mixed and dispersed into mixed powder as the raw material of the bottom layer; 60 mass parts of sludge and 40 mass parts of plastic soil (bentonite tailings) are mixed and Dispersed into mixed powder, used as the raw material of the surface layer;

[0046] S2. The mixed powder is atomized and sprayed with water in the disc granulator for granulation. During the granulation process, water is continuously atomized under high pressure. The amount of water added is 10% of the mass of the mixed powder, and 25% (external mixing) bentonite is sprinkled. , wrapped evenly on the surface of the material ball.

[0047] S4, see figure 2 , divide 2 layers of fabrics in the forming mold, cloth base material layer 2 first, then cl...

Embodiment 3

[0052] Using municipal sludge (with a particle size below 0.075mm) as raw material to prepare fine-grained waste slag ceramic permeable bricks, wherein step 1 is:

[0053] S1, mix the municipal sludge of 70 mass parts and the chemical waste gypsum of 30 mass parts and break up into a mixed powder, as the raw material of the bottom layer; mix the municipal sludge of 60 mass parts and the chemical waste gypsum of 40 mass parts and Break up into a mixed powder and use it as a raw material for the surface layer.

[0054] S2. The mixed powder is granulated by adding water in the disc granulator. During the granulation process, add water continuously and evenly. The amount of water added is 10% of the mass of the mixed powder. Sprinkle 40% (external mixing) dry powder binder low-temperature ball soil , wrapped evenly on the surface of the material ball.

[0055] S4, see figure 2 , divide 2 layers of fabrics in the forming mold, cloth base material layer 2 first, then cloth fabric...

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Abstract

The invention belongs to the fields of waste recycling and building materials and provides a fine-powder waste residue permeable sintered pavement brick, having permeability coefficient of greater than 2.0*10<-2> cm / s and strength level of Rf 4.0 and above. The invention also provides a production method of the fine-powder waste residue permeable sintered pavement brick; the production method comprises: mixing 40-90 parts of waste residue powder and 10-60 parts of plastic waste, breaking into mixed powder, controlling grain grading to form pellets by means of a high-pressure atomization spraying and granulating process, the pellets are coated with a powder binder during pelletizing, material is distributed in a forming die layer by layer to obtain a blank by pressing, and the blank is dried and fired at 1000-1250 DEG C. The production method provided herein has the advantages that the problem that fine-grain powdery waste is difficult to drill by a stacking method due to lack of aggregates is solved, and the one-step firing process with pelletizing and stack-drilling during coating of a binder is creatively provided; the method has high waste residue mixing amount, the waste reduction effect is significant, and the method is high in practicality and facilitates standard production and popularization.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of waste resources and building materials, and in particular relates to a fine powdery waste slag permeable sintered pavement brick and a preparation method thereof. Background technique [0002] "Waterlogging every time it rains" has become a common problem in my country's cities. When building stations, squares, sports grounds, roads and other public places, the problem of rapid drainage of rainwater must be taken into consideration. Because some garbage will accumulate in roads and squares, and when heavy rain is approaching, the accompanying strong wind will dry up a lot of water. Branches and dead leaves are blown down to roads and squares, and the rainwater washes these dead branches and leaves and garbage to the floor drain and often blocks the leak, resulting in serious water accumulation in low-lying places. Permeable brick is a pavement brick with strong water absorption functio...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B33/132
CPCC04B33/132C04B38/00C04B2111/00284C04B2111/40C04B2235/96Y02P40/60
Inventor 王树琪杨航刘广耀许新强申士富李伟光刘海营骆有发郭双龙曹桂萍陈富祥熊立波陶典枝
Owner 中条山有色金属集团有限公司