Porous material prepared from solid wastes

A solid waste, porous material technology, applied in the field of porous materials, can solve the problems of short sintering time, difficult to control properties, long sintering time, etc., and achieve the effects of short sintering time, adjustable particle size and shape, and wide range of uses

Inactive Publication Date: 2018-09-21
ZEROWASTE ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the existing porous materials prepared from solid waste need to consume clay, the properties are difficult to control, the firing time is long, the energy consumption is high, and the process control is strict, and to provide a kind of porous material with wide application, particle size and Adjustable shape, bulk density, pore size, and closed porosity can be adjusted in a wide range, no need to consume clay, porous material prepared from solid waste with short sintering time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The porous material prepared from solid waste in this example is composed of solid waste masterbatch, molding agent, foaming agent and flux. By weight, the solid waste masterbatch is: 70% of waste incineration bottom ash, fly ash fly ash 10%, water treatment sludge incineration ash 10%. The molding agent is 2% of polyvinyl alcohol, the foaming agent is 2% of magnesium carbonate, 1% of sodium carbonate, 1% of sugar, 3% of carbon black, and the flux is 1% of bismuth oxide.

[0030] The waste incineration bottom ash, fly ash fly ash, and water treatment sludge incineration ash are dry ground and pulverized in the same ball mill until more than 95% of the particle size by weight is ground to less than 100 μm, with an average particle size of 50 μm.

[0031] The preparation method adopted in this example is as follows:

[0032] The waste incineration bottom ash, fly ash fly ash, water treatment sludge incineration ash, forming agent, foaming agent and fluxing agent are mixe...

Embodiment 2

[0037] For the porous material prepared from solid wastes in this example, the solid waste masterbatch is: 40% of river and lake bottom mud, 40% of sewage treatment sludge, 5% of waste wood, 3% of waste paper, and 2% of waste plastics. The molding agent is 5% calcium sulfate, 1% silane coupling agent, the foaming agent is 1% strontium carbonate, 1% coke, 1% calcium carbonate, and the flux is 1% boron oxide.

[0038] Waste wood, waste paper, and waste plastics are pulverized into particles with an average particle size of more than 95% by weight and a particle size of less than 1 mm.

[0039] The mixed paste is granulated by an extruder into a cylindrical green body with a diameter of 3 mm and a length of 5 mm, and the green body is allowed to stand for more than 30 minutes to harden. Then, the green body is sent to a continuous microwave heating system for rapid firing. The microwave frequency is 2.45GHz, the power is 1kW, the heating time is 5 minutes, the annealing time is ...

Embodiment 3

[0043]For the porous material prepared from solid waste in this example, the solid waste masterbatch is: 74% of waste glass, 10% of waste incineration fly ash, 10% of straw, and 3% of waste activated carbon. The molding agent is 1% sodium silicate, the foaming agent is 1% silicon carbide, and the flux is 1% boron oxide.

[0044] The waste glass, waste incineration fly ash and waste activated carbon were dry ground and pulverized in the same ball mill to an average particle size of 15 μm; the straw was crushed to an average particle size of 100 μm.

[0045] The mixed powder is molded into a flake green body with a thickness of 8 mm and a width of 500 mm with a rolling die machine. Then, the green body is sent to a continuous microwave heating system for rapid firing. The microwave frequency is 22.5GHz, the power is 10kW, the heating time is 15 minutes, the annealing time is 10 minutes, and the annealing method is forced air cooling. The annealed porous material was pulverized...

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PUM

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Abstract

The invention belongs to the field of environment protection and relates to porous material prepared from solid wastes. The porous material is prepared from, by weight, 50-97% of solid waste parent material, 1-20% of a forming agent, 1-15% of a foaming agent and 1-15% of fluxing agent. By the arrangement, shortcomings that the porous material prepared from existing solid wastes require clay consumption, and the porous material is difficult to control, long in sintering time, high in energy consumption and severe in requirement of process control are overcome; the porous material prepared fromthe solid wastes is widely applicable and adjustable in particle size and shape, volume density, porosity size and percentage of close area of the porosity can be adjusted in a wide range, clay consumption is not needed, and short sintering time is achieved.

Description

Technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a porous material prepared from solid waste. Background technique [0002] With the rapid development of industry and economy, a large amount of municipal, agricultural and industrial solid wastes are produced. The main methods of dealing with these solid wastes are landfill and incineration. However, in addition to the potential risk of environmental pollution, landfill disposal also takes up a lot of valuable land resources. Incineration will produce various air pollutants and toxic incineration ash by-products, and many solid wastes have low calorific value and are not suitable for incineration. Therefore, converting solid waste into valuable resources for recycling has become the most ideal method of solid waste treatment recognized at home and abroad. The technology of solid waste recycling mainly focuses on converting solid waste into building material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/02C04B33/13C04B33/132C04B33/135C04B33/32C04B38/02C04B38/06
CPCC04B18/027C04B33/13C04B33/1305C04B33/131C04B33/132C04B33/1321C04B33/1355C04B33/32C04B35/6316C04B35/63416C04B38/02C04B38/068C04B2235/667C04B2235/77C04B18/023C04B18/08C04B18/06C04B14/22C04B18/0418C04B22/10C04B24/10C04B22/04C04B22/06C04B38/0067C04B38/0074C04B38/0054Y02P40/60
Inventor 孙晓龙葛利丫王锦顺廖超毅林宇童杨为中
Owner ZEROWASTE ASIA PTE LTD
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