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A kind of raw material pretreatment method for the preparation of recycled concrete

A technology for raw material pretreatment and concrete regeneration. It is used in grain treatment, sustainable waste treatment, solid waste management and other directions. It can solve the problems of difficult and small particles and crushing, and achieve the effect of improving crushing efficiency.

Inactive Publication Date: 2020-05-08
河北正实城建开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the problems in the prior art, the purpose of the present invention is to provide a pretreatment method for raw materials for the preparation of recycled concrete, which solves the problem that in the process of crushing waste concrete, the surface of the concrete protects the small particles mixed inside, and it is difficult to grind the small particles inside. Broken technical issues

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  • A kind of raw material pretreatment method for the preparation of recycled concrete
  • A kind of raw material pretreatment method for the preparation of recycled concrete
  • A kind of raw material pretreatment method for the preparation of recycled concrete

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Embodiment 1

[0046] see Figure 1-4 as well as Figure 9 , is a kind of recycled concrete preparation raw material pretreatment method, comprises the following several steps:

[0047] S1, crushing treatment, put the discarded concrete blocks into the crusher for crushing, and obtain granular concrete;

[0048] S2, grinding treatment, the granular concrete obtained after being crushed by the crusher in step S1 is put into the grinder for crushing and grinding to obtain powdery concrete;

[0049] S3, screening treatment, performing screening treatment on the crushed and ground concrete in step S2, and sorting out the coarse sand and fine sand contained in the concrete;

[0050] S4, preparing new concrete, stirring and mixing the coarse sand and fine sand selected in step S3, and adding cement, water, natural sand, natural gravel and pebbles to prepare new concrete;

[0051] The crusher 1 described in the above step S1 comprises a main support plate 101, the main support plate 101 is uprig...

Embodiment 2

[0062] see Figure 1-9 , is a schematic diagram of the overall structure of a raw material pretreatment method for preparing recycled concrete. This embodiment has similarities with the above-mentioned embodiment 1, and the similarities will not be described in this embodiment. The specific differences are:

[0063] The grinding machine 2 described in step S2 includes a grinding cylinder 201, which is set in a cylindrical structure, and the grinding cylinder 201 is fixed upright on the ground. The bottom of the grinding cylinder 201 is provided with a slot 211, and the two sides of the slot 211 are provided with Bottom feet, the inside of the grinding cylinder 201 is provided with a storage chamber 202, and the top of the grinding cylinder 201 is provided with a fan-shaped opening communicating with the storage chamber 202; the bottom of the storage chamber 202 is provided with a discharge chamber 215, and the discharge chamber 215 The top of the top is provided with a grindin...

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Abstract

The invention discloses a method for pre-treating raw materials for the preparation of recycled concrete, and relates to the technical field of concrete production and processing. The method for pre-treating the raw materials for the preparation of the recycled concrete comprises the following steps that S1, crushing treatment is carried out, specifically, waste concrete blocks are put into a crusher for crushing to obtain granular concrete; S2, grinding treatment is carried out, specifically, the granular concrete obtained after crushing by the crusher in the S1 is put into a grinder for crushing and grinding to obtain finely divided concrete; and S3, screening treatment is carried out, specifically, the crushed and ground concrete in the S2 is subjected to screening treatment, and coarsesand and fine sand contained in the concrete are sorted out. According to the method for pre-treating the raw materials for the preparation of the recycled concrete, a plurality of chipping bumps distributed at equal distance are arranged on the inner wall of a static jaw plate and the inner wall of a movable jaw plate, the chipping bumps generate extrusion force on the surface of the concrete, the surface of the waste concrete is chipped, the chipping bumps are used for chipping cracks on the surface of the concrete, and improvement of the crushing efficiency of the waste concrete is facilitated.

Description

technical field [0001] The invention relates to the technical field of concrete production and processing, in particular to a pretreatment method for preparing raw materials for recycled concrete. Background technique [0002] With the vigorous development of commercial concrete in our country, the concrete industry has become a pillar industry in the field of building materials. However, as the largest man-made engineering material, once the building or structure disintegrates, it will correspondingly become the "main force" of construction waste. At present, in our country, the annual discharge of concrete waste exceeds 100 million tons. In the past, most of these waste concrete could not be recycled well. At the same time, a large number of sites are needed to deal with these construction wastes (stacked or landfilled). At the same time, as a pillar industry of the building materials industry, the cement industry is also a well-deserved "big player" in terms of resource ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/16C04B20/02B02C1/04B02C1/10B02C19/00B02C23/08
CPCB02C1/04B02C1/10B02C19/00B02C23/08C04B18/16C04B20/026C04B28/00C04B22/002C04B14/068C04B14/02Y02W30/91
Inventor 胡飞龙周英郭金生王林
Owner 河北正实城建开发有限公司