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Classification recovery utilization method for building garbage

A construction waste and construction technology, which is applied in the field of construction waste classification and recycling, can solve the problems of untimely disposal and utilization of construction waste, and achieve the effects of saving labor input costs, saving processing time, and improving classification efficiency.

Inactive Publication Date: 2015-01-28
STATE GRID SHANDONG ELECTRIC POWER CO WUDI COUNTY POWER SUPPLY CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of adverse effects caused by the untimely treatment and utilization of existing construction waste, and to provide a construction waste sorting and recycling method with high effective utilization rate, timely recycling and low processing cost

Method used

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Embodiment

[0029] The method for classification and recycling of construction waste consists of the following steps,

[0030] (1) Screening treatment: Use screening equipment to screen sand particles with a fineness modulus less than 3.7 from building materials.

[0031] (2) Selection and separation: use magnetic separation to select iron products from the remaining building materials; then put the selected building materials into the brine, and use the buoyancy of the brine to pick out the wooden blocks and plastics in the building materials , Finally, other metal products are selected from the building materials by manual methods.

[0032] Among them, the selected metal products can be sorted, recycled and recast, such as aluminum alloy, copper, color steel, iron products, stainless steel, etc. After being screened out in this step, they are transported to the garbage recycling station, where they are recycled and reused . And the plastic products in this step are also transported to...

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Abstract

The invention discloses a classification recovery utilization method for building garbage, and mainly solves the problem that conventional nontimely processing and utilization of building garbage bring adverse influence. The method comprises: (1) screening out sand particles with the fineness modulus less than 3.7 from the building material; (2) sorting out metal products, wood products and plastic products from the building material; (3) crushing the residual building material into particles with the fineness of 100 mm-200 mm; (4) repeating the step (1) and the step (2), crushing the residual particle material into particles with the particle size of 40 mm or less, and screening out sand particles with the fineness modulus less than 3.7; (5) sending the residual particles after screening into a baking oven for baking to dry; (6) putting the dried material into a cracking furnace for cracking; and (7) performing infrared heating on the cracked particles for charring, and separating out sand particles with the fineness modulus less than 3.7. The method has the advantages of high effective utilization rate, timely recovery processing, low processing cost and the like.

Description

[0001] technical field [0002] The invention relates to a method for processing construction waste, in particular to a method for classifying and recycling construction waste. Background technique [0003] Construction waste refers to the general designation of muck, waste concrete, waste masonry and other waste generated during the construction, laying or demolition, and repair of various buildings, structures, pipe networks, etc. by construction units or individuals. [0004] Construction waste is classified according to the source of generation. Construction waste can be divided into engineering dregs, decoration waste, demolition waste, and engineering mud. block, waste mortar, mud, asphalt block, waste plastic, waste metal, waste bamboo and wood, etc. [0005] With the acceleration of industrialization and urbanization, the construction industry is also developing rapidly, and the accompanying construction waste is increasing. The amount of construction waste in Ch...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
CPCY02W30/58Y02W30/78
Inventor 曾德明
Owner STATE GRID SHANDONG ELECTRIC POWER CO WUDI COUNTY POWER SUPPLY CO
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