System for preparing recycled aggregate from waste concrete on basis of particle impact crushing

A technology for waste concrete and recycled aggregate, which is applied in solid waste management, sustainable waste treatment, grain treatment, etc. The effect of a large amount of sandblasting

Active Publication Date: 2019-05-03
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing processing method is to directly crush waste concrete into smaller particle sizes. Due to the large amount of mortar contained, it cannot be used directly as recycled aggregate. The utilization rate of waste concrete is low. With the development concept of low-carbon and environmental protection, it is becoming more and more popular. , Concrete production, especially municipal road construction, chooses to use environmentally friendly recycled aggregates, which is a wise move to practice sustainable development

Method used

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  • System for preparing recycled aggregate from waste concrete on basis of particle impact crushing
  • System for preparing recycled aggregate from waste concrete on basis of particle impact crushing
  • System for preparing recycled aggregate from waste concrete on basis of particle impact crushing

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Embodiment Construction

[0027] In this example, the concrete block is waste concrete from construction waste, and after screening, it does not contain impurities such as steel bars, wood, and rubber. By adopting the aggregate regeneration system of the present invention, the aggregate and cement mortar of waste concrete can be completely separated efficiently. The present invention will be further described below through specific embodiments.

[0028] figure 1 It is a schematic structural diagram of a system for preparing recycled aggregates based on particle impact crushed waste concrete, which includes: a first inlet 1, a second inlet 2, a lifting device 3, a silo 4, a conveyor belt 5, a crusher 6, The first vibrating screen 7, the heating furnace 8, the particle accelerator 9, the dust collector 10, the spray grinding chamber 11, the crawler belt 12, and the second vibrating screen 13.

[0029] The silo 4 is used to store concrete blocks with a particle size greater than 40mm after primary crushing. T...

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Abstract

The invention provides a system for preparing recycled aggregate from waste concrete on basis of particle impact crushing. Concrete blocks enter a crusher through a conveyor belt for being crushed, then the crushed concrete blocks are screened to be concrete particles through a first vibrating screen, the concrete particles enter a heating furnace to be heated, and the heated concrete particles enter an air abrasion chamber through a first feeding port and are transmitted to a position below an outlet of a particle accelerator by a crawler belt; the air abrasion chamber is further provided with a second feeding port, and air abrasion particles enter the air abrasion chamber from the second feeding port and are lifted by a lifting device to enter the particle accelerator; and the air abrasion particles sprayed out of the particle accelerator collide with the concrete particles, and then mortar on the surfaces of the concrete particles are stripped, so that the high-quality recycled aggregate is prepared.

Description

Technical field [0001] The invention relates to the technical field of using waste concrete to prepare high-quality recycled aggregates, in particular to a system for preparing recycled aggregates from waste concrete based on particle impact crushing. technical background [0002] In recent years, with the vigorous development of my country's transportation and construction industries, the amount of waste concrete produced by large-scale demolition has increased dramatically. The existing processing method is to directly crush waste concrete into smaller particle sizes. Because it contains a large amount of mortar, it cannot be directly used as recycled aggregate. The utilization rate of waste concrete is low. With the development concept of low carbon and environmental protection, it is increasingly popular. , Concrete production, especially municipal road construction, chooses to use environmentally friendly recycled aggregates, which is the wise move to practice sustainable de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16B02C21/00B02C23/02B02C23/16
CPCY02W30/91
Inventor 房怀英杨建红黄文景刘付林张宝裕林伟端秦瑞聪
Owner HUAQIAO UNIVERSITY
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