Complete harmless and resourceful treatment process of building solid waste

A technology for solid waste and processing technology, which is applied in the field of preparation of lightweight porous building ceramic energy-saving materials, can solve the problems of lack of operability in technological process, limited variety of construction solid waste, high dissolution rate of harmful metal ions, etc., and achieve The effects of improving stability and reliability, widening the firing temperature range, and reducing the probability of being dissolved by water

Active Publication Date: 2015-04-08
SHAANXI BAOSHEN MACHINERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of patent has the advantages of good killing of germs and microorganisms in construction solid waste, there are limited types of construction solid waste, low usage, low treatment temperature, and incomplete solidification of harmful ions contained in it ( The dissolution rate of harmful metal ions is high), and its technical process lacks disadvantages such as poor operability, low product grade, and narrow product use range. For example, the patent CN1830869A uses construction solid waste to prepare sintered hollow blocks, which are only roughly mentioned in the patent. Construction solid waste can be used to prepare sintered hollow blocks, so there are disadvantages such as lack of operability, low-grade products, and narrow product use range in the treatment and disposal technology of such construction solid waste, and the sintering of such products The lower forming temperature is 850-1000°C. Harmful ions in construction solid waste, such as hexavalent chromium heavy metal ions, have the risk of incomplete solidification and incomplete harmlessness. There is a risk of secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Construction solid waste in a certain place, the main composition: concrete block 60-70%; muck 25-30%;

[0058] The other 5-10% are mainly domestic garbage, wood, plastic and so on.

[0059] The construction solid waste is coarsely crushed to 1-2 cm by a toothed roller crusher, and the obtained materials are mixed evenly, and the metals (such as metal iron) contained in them are shaved off, and then the plastics, wood and other organic substances are selected by winnowing. Grind the coarsely crushed other materials with a Raymond mill until all of them pass through a 100-mesh sieve, and more than 35% of them pass through a 325-mesh sieve.

[0060] Plastic, wood, leaves and other organic waste are removed from metal, shredded by a shredder, and ground by a disc mill until they pass through a 20-mesh sieve, and the organic waste powder is prepared as a pore-forming agent and an internal combustion raw material for future use.

[0061] Construction solid waste powder, after...

Embodiment 2

[0067] Construction solid waste in a city, the main composition: 40-50% of concrete blocks; 10-15% of muck; 30-40% of broken bricks, 1-2% of waste gypsum boards, and 3-5% of others, mainly domestic waste , wood, waste rubber, weeds, etc.

[0068] The construction solid waste is roughly crushed to 1-1.5 cm by the jaw crusher, and then mixed evenly, and the metal (such as metal iron) contained in it is shaved off, and then the weeds, wood, waste rubber, etc. are selected by winnowing organic matter. Then, the remaining construction solid waste materials after coarse crushing are ground with a Raymond mill until the 20-mesh sieve passes through, and more than 25% of them pass through the 325-mesh sieve, and the powder is sent to the homogenization bin for homogenization.

[0069] Weeds, wood, plant straw, waste rubber and other organic waste are removed from metal, shredded by shredder, and ground by disc mill until they pass through 35 meshes, and organic solid waste powder is ...

Embodiment 3

[0075] Construction solid waste in a certain county mainly consists of: waste bricks 60-70%; muck 15-20%; other 10-30%, mainly concrete blocks, household garbage, leaves, weeds, wood, waste plastics, etc. Construction solid waste is roughly crushed to less than 1 cm, mixed evenly, metals (such as metal iron) contained in it are shaved off, and organic matter such as weeds, wood, waste plastics, etc. are selected by winnowing. Grind the coarsely crushed material with a Raymond mill until all pass through a 40-mesh sieve, of which more than 30% pass through a 325-mesh sieve, and the powder is sent to the homogenization bin for homogenization.

[0076] Weeds, wood, plant straw, waste rubber and other organic wastes are demetallized, shredded by a shredder, and then ground by a disc mill until they pass through a 35-mesh sieve. The obtained organic solid waste powder is used as a pore-forming agent. spare.

[0077] Construction solid waste powder, after homogenization, the main c...

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Abstract

The invention relates to a complete harmless and resourceful treatment process of building solid waste. The complete harmless and resourceful treatment process is characterized in that the building solid waste is molded, dried and sintered to produce ceramic products with stable physicochemical properties, and the sintering temperature ranges from 1000 to 1200 DEG C. According to the complete harmless and resourceful treatment process, the building solid waste is used for stably producing various ceramic products in bulk; the main indexes of the products include that three-point bending strength is larger than 2-50 MPa, the gas hole ratio ranges from 0.1% to 70%, and the hole ratio is 0-80%. According to the process, large-scale, mass and quick treatment of the building solid waste and solid waste in other fields can be achieved, and complete harmless and permanent solidification of poisonous and harmful substances can be achieved.

Description

technical field [0001] It relates to a completely harmless treatment and disposal technology of construction solid waste used in the field of environmental protection, a preparation technology of filter ceramic materials for water and air pollution treatment, heat storage materials and lightweight porous building ceramic energy-saving materials. Background technique [0002] Construction solid waste is a variety of organic and inorganic solid waste produced during the construction, renovation, and maintenance of various buildings. It has the characteristics of many types of materials, large processing volume, and difficult processing. my country's construction solid waste not only contains cement, stones, bricks, gypsum boards, muck, glass, scrap metal, but also some organic components of domestic waste, such as waste plastics, oil, plant tissues, animal carcasses, food Residues, as well as solid waste components in other fields such as industrial slag, have a wide variety of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/622
Inventor 林永淳刘光亮雷振林林永泽刘永强
Owner SHAANXI BAOSHEN MACHINERY GROUP
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