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Fine treatment process for building solid waste

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: 2017-06-13
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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  • Fine treatment process for building solid waste

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Experimental program
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Effect test

Embodiment 1

[0033] A high-quality construction solid waste treatment process, comprising the following steps:

[0034] (1) Air-dry the construction solid waste in a closed 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;

[0035] (2) Transport the remaining construction solid waste after sorting in step (1) to a heavy-duty stripping screen to remove mixed mud, and then transport it to a vibrating feeder. The construction solid waste with a particle size of 0-80mm is directly After entering the first-level screening, the remaining parts are firstly manually sorted out of 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 magnetic separatio...

Embodiment 2

[0046] A high-quality construction solid waste treatment process can be refined into the following steps:

[0047] Step 1: Pre-treat the construction solid waste, air-dry it in a closed storage yard, and perform preliminary manual sorting. The sorted plastic, glass, wire, steel bar, wood, etc. enter step 17. The building solid waste after the initial manual sorting waste into step 2;

[0048] Step 2: The manually sorted construction solid waste is fed into the hopper, transported to the heavy-duty stripping sieve to screen out mixed mud; Solid waste directly enters step 6, while construction solid waste with a particle size above 80mm enters step 3;

[0049] Step 3: Carry out first-level manual sorting of construction solid waste with a particle size above 80mm, sort out rags, wood, plastics, wires, etc. and enter step 17, and the construction solid waste of this first-level manual sorting enters step 4;

[0050] Step 4: The first-level artificially sorted construction solid...

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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 resource utilization of building solid waste and building materials, and relates to a high-quality treatment process of building solid waste. Background technique [0002] With the vigorous development of my country's infrastructure construction, old buildings, roads, etc. are demolished and rebuilt, and large-scale construction of houses and municipal facilities has produced a huge amount of construction solid waste. According to statistics, my country's current annual output is about 2 billion tons. , The reserve of construction solid waste is 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 landfilled, which cannot fundamentally solve the problem of construction solid waste disposal, wasting a lot of land resources. [0003] my country's construction demolition sites do not systematically classify con...

Claims

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Application Information

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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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