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A high-quality construction solid waste treatment process

A treatment process and construction technology, applied in the field of high-quality construction solid waste treatment process, can solve the problems of unstable product quality, lack of systematic impurity removal means, low treatment efficiency, etc., and achieve no clogging of crushers and screening equipment, crushing Efficient screening and air selection efficiency

Active Publication Date: 2019-06-14
中建西部建设西南有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the different types of construction solid waste and the demand for recycled products, there is no mature process technology for the systematic disposal of mixed construction solid waste, and there are generally problems such as lack of systematic impurity removal methods, low treatment efficiency, and unstable product quality.
At present, general construction solid waste is treated as recycled aggregate, which is only used in low value-added products such as recycled bricks and recycled blocks, making it difficult for resource utilization enterprises to generate profits
At the same time, the crushing index, impurity content, and apparent density of the recycled aggregate produced are also difficult to meet the national standard requirements, and it is even more difficult to be applied in concrete

Method used

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  • A high-quality construction solid waste treatment process
  • A high-quality construction solid waste treatment process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-quality construction solid waste treatment process, including the following steps:

[0033] (1) Air-dry the construction solid waste in a closed storage yard, try to ensure that the moisture content of the construction solid waste is kept below 10%; then carry out preliminary manual sorting, and sort out rags, plastics, glass, wires, and steel bars as much as possible , Wood, etc., to reduce the pressure for subsequent sorting;

[0034] (2) The remaining construction solid waste after sorting in step (1) is transported to a heavy-duty peeling screen to screen out the mixed mud, and then transported to the vibrating feeder, where the 0~80mm particle size construction solid waste is directly After entering the first-level screening, the other remaining parts are first manually sorted out rags, plastics, glass, wires, wood and other materials, and then enter the first-level jaw crushing, so that the particle size is basically kept below 100-150mm. Then carry out magneti...

Embodiment 2

[0045] A high-quality construction solid waste treatment process can be refined into the following steps:

[0046] Step 1: Pre-treat the construction solid waste, air-dry it in a closed storage yard, and carry out preliminary manual sorting. The sorted plastic, glass, wire, steel, wood, etc. go to step 17, the construction solid waste after the initial manual sorting Go to step 2;

[0047] Step 2: The manually sorted construction solid waste is sent to the hopper, and transported to the heavy-duty peeling screen to screen out mixed mud; then, it is transported to the vibrating feeder through the heavy-duty peeling screen, and the buildings with a particle size of 0-80mm Solid waste enters step 6 directly, and construction solid waste with a particle size of 80mm or more enters step 3;

[0048] Step 3: Perform first-level manual sorting of construction solid waste with a particle size of 80mm or more, sort out rags, wood, plastics, wires, etc. into step 17, and the first-level manual...

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Abstract

The invention discloses a fine treatment process for building solid waste, mainly comprising the following steps: pretreatment in a storage yard of building solid waste, including airing and manual sorting; stripping of mud powder and mud blocks, three-stage crushing, three-stage screening, manual sorting, air separation, magnetic separation, color separation, screening of different-hardness solid waste by different sorting techniques and combined grinding and dry type sand washing techniques, thereby preparing 2 kinds of novel green mineral aggregate, namely common recycled aggregate with particle sizes of 0-5mm, 5-20mm and 20-31.5mm, and high-strength high-quality recycled aggregate with particle sizes of 0-5mm, 5-20mm and 20-31.5mm, 5 types of high-quality, high-added value recycled products such as mortar and concrete curing aggregate, inertia micropowder and other sorted products. The fine treatment process for building solid waste realizes fine, high-added value treatment of building solid waste, achieves 100% resource utilization, and makes a great breakthrough in fine treatment in the resource utilization industry of building solid waste.

Description

Technical field [0001] The invention belongs to the field of construction solid waste resource utilization and construction materials, and relates to a high-quality construction solid waste treatment process. Background technique [0002] With the vigorous development of my country’s infrastructure construction, the demolition and reconstruction of old buildings, roads, etc., and the large-scale construction of housing and municipal facilities, a huge amount of solid waste has been generated. According to statistics, my country’s current annual output is about 2 billion tons. , The reserves of construction solid waste are about 20 billion tons, causing serious pollution of the environment, land, air, and water resources. At present, most of my country's construction solid waste is mainly landfilled, which cannot fundamentally solve the problem of construction solid waste treatment, and waste a lot of land resources. [0003] my country's building demolition site does not systematic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/16C04B14/22C04B20/02C10B53/00B09B3/00B02C21/00B29B17/00B29B17/02B29B17/04
CPCB02C21/00B09B3/00B29B17/00B29B17/02B29B17/04B29B2017/001B29B2017/0224B29B2017/0272B29B2017/0424C04B14/22C04B18/16C10B53/00C04B20/02C04B20/026C04B20/0076Y02W30/52Y02W30/58Y02W30/62Y02W30/91
Inventor 卢佳林高育欣陈景甘戈金徐国栋温超凯
Owner 中建西部建设西南有限公司
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