阅读说明：本技术 一种利用建筑废渣生产调合沙粉的方法 (Method for producing blended sand powder by using building waste residues ) 是由 王朝柱 于 2019-11-07 设计创作，主要内容包括：本发明涉及建筑垃圾再利用技术领域,公开了一种利用建筑废渣生产调合沙粉的方法,包括如下步骤：S1将建筑废渣砖、煤矸石、水泥建材渣和石粉,按重量比1∶1∶3∶0.3～3∶1∶1∶0.3进行配料,S2将配好的废渣送入前置除杂装置进行一级除杂,S3将前置除杂装置处理过后的废渣送入第一破碎机进行一次破碎、筛选分离,筛分后得到的细物料放入粉料库备用,筛选分离后得到的粗物料送入二次破碎,S4将二次破碎后的废渣送入第一粉碎机进行一次粉碎、筛选分离,筛分后得到的细物料放入粉料库备用,筛选分离后得到的粗物料送入第二粉碎机进行二次粉碎后进行存储,本发明解决了对建筑固体废物进行简单的填埋方式进行处理时,占用大量土地资源、污染环境的问题。(The invention relates to the technical field of building waste recycling, and discloses a method for producing blended sand powder by using building waste residues, which comprises the following steps: s1, mixing the building waste slag brick, the coal gangue, the cement building material slag and the stone powder according to the weight ratio of 1: 3: 0.3-3: 1: 0.3, S2 feeding the mixed waste slag into a front impurity removal device for primary impurity removal, S3 feeding the waste slag treated by the front impurity removal device into a first crusher for primary crushing, screening and separating, wherein fine materials obtained after screening are placed in a powder warehouse for standby, coarse materials obtained after screening and separating are sent into a secondary crushing machine, S4 waste residues obtained after secondary crushing are sent into a first crushing machine for primary crushing and screening and separating, fine materials obtained after screening are placed in a powder warehouse for standby, and coarse materials obtained after screening and separating are sent into a second crushing machine for secondary crushing and then are stored.)

1. A method for producing blended sand powder by using building waste residues is characterized by comprising the following steps:

s1, mixing the building waste slag brick, the coal gangue, the cement building material slag and the stone powder according to the weight ratio of 1: 3: 0.3-3: 1: 0.3, and spraying water to reduce dust;

s2, feeding the prepared waste residues into a front impurity removal device for primary impurity removal, wherein the front impurity removal device comprises a material conveying pipe (5) which is longitudinally arranged, a material conveyor (4) is arranged at an inlet at the upper end and an outlet at the lower end of the material conveying pipe (5), a low-density impurity removal pipe (2) communicated with the inner cavity of the material conveying pipe is arranged at one side of the material conveying pipe (5), a fan (3) is arranged in the low-density impurity removal pipe (2), a metal impurity removal pipe (7) is arranged at one side of the raw material pipe, which is opposite to the low-density impurity removal pipe (2), and an electromagnet (6) is arranged in the metal impurity removal pipe (7;

s3, conveying the waste residue treated by the front impurity removal device into a first crusher for primary crushing, conveying the crushed waste residue into a vibration screening machine for screening and separation, putting fine materials obtained after screening into a powder storage for later use, conveying coarse materials obtained after screening and separation into a second crusher for secondary crushing, removing waste iron in the waste residue by using an iron remover in the primary crushing, screening and separation and secondary crushing processes, and performing spray watering and dust removal on the waste residue in the primary crushing, screening and separation and secondary crushing processes;

s4, sending the waste residue after the secondary crushing into a first crusher for primary crushing, sending the crushed waste residue into a vibrating screening machine for screening and separating, placing fine materials obtained after screening into a powder storage for later use, sending coarse materials obtained after screening and separating into a second crusher for secondary crushing and storing, and removing waste iron in the waste residue by using an iron remover in the primary crushing, screening and separating and secondary crushing processes.

2. The method for producing the blended sand powder by using the building waste residues according to claim 1, wherein the building waste residue bricks, the coal gangue, the cement building material residues and the stone powder are mixed by a dust removal fog gun for dust removal, and a water distribution pipe is used for dust removal in the primary crushing, screening and separating and secondary crushing processes.

3. The method for producing the blended sand powder by using the building waste residues as claimed in claim 1, wherein one end of the low-density impurity removal pipe (2) far away from the material conveying pipe (5) is connected with a low-density waste material box (1), one end of the metal impurity removal pipe (7) far away from the material conveying pipe (5) is connected with a metal waste material box (8), and the low-density waste material box (1) and the metal waste material box (8) are respectively provided with a sealing cover.

4. The method for producing the blended sand powder by using the building waste residues as claimed in claim 3, wherein the metal waste pipe conveying pipes (5) are longitudinally parallel, the annular sides of the metal waste pipes are provided with inlets communicated with the inner cavities of the metal waste pipes (5), the electromagnets (6) are arranged on one sides, far away from the metal waste pipes (5), of the longitudinal parts of the metal waste pipes, and the electromagnets (6) are opposite to the inlets of the metal waste pipes.

5. The method for producing the blended sand powder by using the building waste residue as claimed in claim 4, wherein the electromagnet (6) comprises a first electromagnet block and a second electromagnet block which are longitudinally arranged in sequence, and the electromagnetic force of the second electromagnet block is greater than that of the first electromagnet block.

6. The method for producing the blended sand powder by using the building waste residues as claimed in claim 1, wherein the vibrating screen classifier is provided with three layers of screens, wherein the three layers of screens are 18 meshes, 20 meshes and 30 meshes respectively.

Technical Field

The invention relates to the technical field of building waste recycling, in particular to a method for producing blended sand powder by using building waste residues.

Background

Statistics show that the quantity of the construction waste in China accounts for 30% -40% of the total quantity of the urban waste, and about 8 hundred million tons of construction waste are generated each year. Along with the acceleration of urban construction process, the construction waste is continuously increased, the harm of the construction waste is more and more obvious, and the situation that the construction waste needs to be thoroughly treated is reached. The building solid waste is simply buried, occupies mountainous regions and fertile farmlands, deteriorates the natural environment and seriously harms the descendants of the reproduction of the organisms and the physical health of people.

At present, the method for treating the building solid waste in China mainly adopts a simple landfill mode for treatment, and the method is accumulated in the sun and the moon, occupies mountain regions and fertile farmlands, deteriorates the natural environment and seriously harms the descendants of the biological reproduction and the body health of people. The original dust and other particles in the solid waste of the building are exposed to the sun, rain and wind, and then permeate into the soil along with the rain and flow into rivers, lakes and seas, thus causing the pollution of water sources, soil and atmosphere. If the waste water is directly buried without being treated, the waste water can cause harm to air, generate new secondary pollution, deteriorate the environment, cause epidemic diseases and threaten the survival of animals and human beings. The method needs to occupy a large amount of land resources for long-term landfill, and how to implement regeneration and resource comprehensive utilization of the building solid waste, reduces exploitation of natural resources to maintain ecological balance in the nature, scientifically treats and disposes the building waste residues, and makes the reduction, stabilization, harmlessness and resource utilization of the building waste residues become important problems.

In view of the above, there is an urgent need to design a method for producing blended sand powder from building waste residues to solve the above problems.

Disclosure of Invention

Based on the problems, the invention provides a method for producing the blended sand powder by using the building waste residues, which solves the problems of large land resource occupation and environmental pollution when the building solid waste is treated in a simple landfill mode.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a method for producing blended sand powder by using building waste residues comprises the following steps:

s1, mixing the building waste slag brick, the coal gangue, the cement building material slag and the stone powder according to the weight ratio of 1: 3: 0.3-3: 1: 0.3, and spraying water to reduce dust;

s2, feeding the prepared waste residue into a front impurity removal device for primary impurity removal, wherein the front impurity removal device comprises a material conveying pipe which is longitudinally arranged, a material conveyor is arranged at an inlet at the upper end and an outlet at the lower end of the material conveying pipe, a low-density impurity removal pipe communicated with an inner cavity of the material conveying pipe is arranged at one side of the material conveying pipe, a fan is arranged in the low-density impurity removal pipe, a metal impurity removal pipe is arranged at one side of a raw material pipe relative to the low-density impurity removal pipe, and an electromagnet is arranged in the metal impurity;

s3, conveying the waste residue treated by the front impurity removal device into a first crusher for primary crushing, conveying the crushed waste residue into a vibration screening machine for screening and separation, wherein the vibration screening machine is provided with three layers of screens, the three layers of screens are respectively 18 meshes, 20 meshes and 30 meshes, fine materials obtained after screening are put into a powder material storage for later use, coarse materials obtained after screening and separation are conveyed into a second crusher for secondary crushing, waste iron in the waste residue is removed by an iron remover in the primary crushing, screening and separation and secondary crushing processes, and the waste residue in the primary crushing, screening and separation and secondary crushing processes is subjected to spray watering and dust removal;

s4, feeding the waste residue after the secondary crushing into a first crusher for primary crushing, feeding the crushed waste residue into a vibrating screen classifier for screening and separation, wherein the vibrating screen classifier is provided with three layers of screens, the three layers of screens are 18 meshes, 20 meshes and 30 meshes respectively, fine materials obtained after screening are placed into a powder storage for later use, coarse materials obtained after screening and separation are fed into a second crusher for secondary crushing and then stored, and waste iron in the waste residue in the primary crushing, screening and separation and secondary crushing processes is removed by an iron remover.

The principle and the effect of the invention are as follows: building waste slag bricks, coal gangue, cement building material slag and stone powder are proportioned according to the weight ratio of 1: 3: 0.3-3: 1: 0.3 and then are conveyed to an inlet batching conveyor of a front impurity removal device, the batching is conveyed to a material conveying pipe through the batching conveyor, when the batching falls longitudinally under the action of gravity, a power supply of a fan and an electromagnet is switched on, the suction action of the fan ensures that low-density substances (wood chips, bamboo objects and plastics) and the like in the batching are sucked into the low-density impurity removal pipe to clean the low-density impurities in the batching, the magnetic force generated by the electromagnet ensures that the metal in the batching is sucked into the metal impurity removal pipe to clean the metal in the batching, the batching is subjected to primary crushing, screening separation, secondary crushing, primary crushing, screening separation and secondary crushing after the batching is processed by the front impurity removal device to obtain sand powder, the conversion action of blending of the building waste slag is realized, and the recycling of the building waste slag is realized, the problem of land resource pollution is brought in the landfill has been avoided, at above-mentioned in-process, through carry out leading edulcoration before once broken, detach saw-dust, bamboo thing, plastics in the batching, when having avoided manual clearance, the problem of waste time, inefficiency, through carry out leading edulcoration before once broken, detach the metal in the batching, realize the rough treatment of metal thing in the batching, avoid the problem of metal damage breaker. The design of the invention solves the problems of large land resource occupation and environmental pollution when the building solid waste is treated in a simple landfill mode.

Further, when the building waste slag brick, the coal gangue, the cement building material slag and the stone powder are mixed, a dust removal fog gun machine is used for removing dust, and a water distribution pipe is used for removing dust in the processes of primary crushing, screening separation and secondary crushing.

Furthermore, the one end that the fortune material pipe was kept away from to low density edulcoration pipe is connected with low density waste bin, and the one end that the fortune material pipe was kept away from to metal edulcoration pipe is connected with metal waste bin, and low density waste bin, metal waste bin all are equipped with sealed lid.

Furthermore, the metal waste pipe conveying pipe is longitudinally parallel, an inlet communicated with the inner cavity of the conveying pipe is formed in the side of the metal waste pipe in a ring mode, the electromagnet is arranged on one side, away from the conveying pipe, of the longitudinal portion of the metal waste pipe, and the electromagnet is opposite to the inlet of the metal waste pipe.

Further, the electro-magnet includes first electromagnetism piece, the second electromagnetism piece that vertical order set up, and the electromagnetic force of second electromagnetism piece is greater than the electromagnetic force of first electromagnetism piece.

Further, the vibration screening machine is provided with three layers of screens, wherein the three layers of screens are 18 meshes, 20 meshes and 30 meshes respectively.

Compared with the prior art, the invention has the beneficial effects that:

(1) the design of the invention solves the problems of large land resource occupation and environmental pollution when the building solid waste is treated in a simple landfill mode.

(2) The invention adopts a dust removal fog gun machine to remove dust when the materials of the building waste slag brick, the coal gangue, the cement building material slag and the stone powder are mixed, and adopts a water distribution pipe to remove dust in the processes of primary crushing, screening separation and secondary crushing. The relative space is great during batching, through setting up dust removal fog gun machine, can remove dust and fall the noise to the factory, makes the factory pollution littleer, is favorable to the health, and the space is relatively narrow among primary crushing, screening separation, the secondary crushing process, and it is more reasonable to carry out the water distribution dust removal through the water-distribution pipe.

(3) According to the invention, one end of the low-density impurity removal pipe, which is far away from the material conveying pipe, is connected with the low-density waste bin, one end of the metal impurity removal pipe, which is far away from the material conveying pipe, is connected with the metal waste bin, and the low-density waste bin and the metal waste bin are respectively provided with the sealing covers. The design of the low-density waste bin is convenient for storing sawdust, bamboo objects, plastics and the like so as to be conveniently and intensively recycled, and the design of the metal waste bin is convenient for intensively recycling and treating metals.

(4) The metal waste pipe conveying pipe is longitudinally parallel, an inlet communicated with the inner cavity of the conveying pipe is arranged on the side of the metal waste pipe in the annular mode, the electromagnet is arranged on the side, far away from the conveying pipe, in the longitudinal portion of the metal waste pipe, and the electromagnet faces the inlet of the metal waste pipe. The electromagnet is electrified, so that the metal in the conveying pipe is absorbed on the electromagnet at the longitudinal part after being absorbed into the inlet transverse part of the metal waste pipe, when a certain amount of metal is absorbed on the electromagnet, the power supply of the electromagnet is cut off, and the metal absorbed on the electromagnet falls into the metal waste box, so that the purpose of collecting the metal in the conveying pipe is achieved.

(5) The electromagnet comprises a first electromagnetic block and a second electromagnetic block which are longitudinally and sequentially arranged, and the electromagnetic force of the second electromagnetic block is greater than that of the first electromagnetic block. Batching is under the action of gravity, and speed grow gradually makes the magnetism of second electro-magnet be greater than the magnetism of first electro-magnet, makes the metal clearance effect in the batching better.

Drawings

FIG. 1 is a schematic view of the production process of the present invention;

FIG. 2 is a schematic structural diagram of a front impurity removing device in FIG. 1;

the labels in the figure are: 1-low-density waste bin, 2-low-density impurity removal pipe, 3-fan, 4-ingredient conveyor, 5-material conveying pipe, 6-electromagnet, 7-metal impurity removal pipe and 8-metal waste bin.

Detailed Description

The invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.