CN114455796A - Coal slime dehydration process - Google Patents

Coal slime dehydration process Download PDF

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Publication number
CN114455796A
CN114455796A CN202111643686.2A CN202111643686A CN114455796A CN 114455796 A CN114455796 A CN 114455796A CN 202111643686 A CN202111643686 A CN 202111643686A CN 114455796 A CN114455796 A CN 114455796A
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CN
China
Prior art keywords
coal slime
raw materials
dehydrator
dehydration
water
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Pending
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CN202111643686.2A
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Chinese (zh)
Inventor
徐汝锋
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Shandong Innovation Huayi Environmental Engineering Co ltd
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Shandong Innovation Huayi Environmental Engineering Co ltd
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Priority to CN202111643686.2A priority Critical patent/CN114455796A/en
Publication of CN114455796A publication Critical patent/CN114455796A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/123Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention discloses a coal slime dehydration process, which comprises the following steps: introducing raw materials into a carriage bin through a loader, and then dropping the raw materials onto a scraper conveyor; under the driving action of a scraper conveyor, the raw materials are processed by a cloth strip cutting machine and then are guided into a coal slime dehydration machine; after being processed by a cloth slitter, the raw materials are uniformly spread on a filter belt in a coal slime dehydrator, and the internal water content of the raw materials is reduced under the driving of the filter belt and the wedge-shaped dehydration and extrusion dehydration actions of the coal slime dehydrator; after the raw material is extruded by a coal slime dehydrator, a filter cake with low water content is formed and discharged through a discharging end; and (3) lifting the residual filtrate of the raw material after the treatment of the coal slime dehydrator to the inside of the integrated water purifier, and performing mud-liquid separation in the integrated water purifier. The coal slime dehydration process can reduce the water content of the coal slime, so that the raw materials of the coal slime can be directly mixed and burnt, and meanwhile, the process can realize standard discharge and recycling of sewage.

Description

Coal slime dehydration process
Technical Field
The invention relates to the technical field of coal slime dehydration, in particular to a coal slime dehydration process.
Background
As the mechanization degree of coal mining is improved and the coal separation technology is rapidly developed in China, the proportion of coal slime is sharply increased, coal slime water is waste generated in the coal washing process, the coal slime with higher water content is formed after being treated by the traditional process method at present, the coal slime can be used after being dried for a period of time, the drying time is limited by the environment and the field, and a large amount of coal slime is difficult to be treated and used, so that higher requirements are put on the dehydration effect of the coal slime, the optimization of the coal slime dehydration process is further promoted.
Disclosure of Invention
The invention aims to provide a coal slime dehydration process aiming at the defects of the prior art so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a coal slime dehydration process comprises the following process steps:
the method comprises the following steps: introducing raw materials into a carriage bin through a loader, and then dropping the raw materials onto a scraper conveyor;
step two: under the driving action of a scraper conveyor, raw materials enter the inside of a cloth slitter and are guided into a coal slime dehydration machine after being processed by the cloth slitter;
step three: after being processed by a cloth slitter, the raw materials are uniformly spread on a filter belt in a coal slime dehydrator, under the driving action of the filter belt, the internal water content of the raw materials is reduced under the wedge-shaped dehydration and extrusion dehydration actions of the coal slime dehydrator, and in the process, a washing water device is started to remove impurities in the raw materials;
step four: after the raw material is subjected to high-dry extrusion of the coal slime dehydrator, most of capillary combined water in the raw material is extruded out, then the raw material is driven by a filter belt to move at the high-pressure tail part of the coal slime dehydrator, and finally a filter cake with low water content is formed and discharged through a discharging end;
step five: the residual filtrate and washing water after the raw materials are treated by the coal slime dehydrator are lifted to the inside of the integrated water purifier through a pump, so that the filtrate and the washing water are precipitated and separated from mud and water in the integrated water purifier, the clear water automatically flows into a clear water tank for recycling workshop production water, the precipitated coal slime automatically flows into a wet coal slime tank and is stored by wet coal slime, and coal slime dehydration can be subsequently carried out again, so that closed cycle treatment of the coal slime is realized.
Further, the integrated water purifier is communicated with a dosing system through a pipeline, and the dosing system can inject a flocculating agent into the integrated water purifier through the pipeline.
According to the coal slime dehydration process, dehydration equipment comprises a carriage bin, a scraper conveyor is fixedly installed inside the carriage bin, the other end of the scraper conveyor is fixedly connected with a cloth slitter, a coal slime dehydrator is fixedly connected below the discharging end of the cloth slitter, a washing water device is fixedly connected inside the coal slime dehydrator, the lower part of the coal slime dehydrator is communicated with an integrated water cleaner through a lifting pump and a pipeline, one side of the integrated water cleaner is connected with a clean water tank through a pipeline, the top of the integrated water cleaner is connected with a dosing system through a pipeline, and the other side of the integrated water cleaner is connected with a wet coal slime tank through a pipeline.
As a preferable technical scheme of the invention, a sewage pipeline is connected below the scraper conveyor, and the scraper conveyor is connected with a sewage pool through the sewage pipeline.
As a preferred technical scheme, the coal slime dehydrator comprises an electric control cabinet, a hydraulic station, conveying rollers and a filter belt, wherein the electric control cabinet and the hydraulic station are sequentially and fixedly mounted at the top of the coal slime dehydrator, the conveying rollers are movably connected inside the coal slime dehydrator, a plurality of groups of the conveying rollers are arranged, and the filter belt is arranged on the outer side of the conveying rollers.
As the preferable technical scheme of the invention, the carriage bin and the required devices are internally provided with wear-resistant parts
Compared with the prior art, the invention provides a coal slime dehydration process, which has the following beneficial effects:
1. according to the coal slime dehydration process, the coal slime dehydrator and the cloth slitter are arranged, raw materials are uniformly spread on the filter belt in the coal slime dehydrator after being processed by the cloth slitter, and under the driving action of the filter belt, the water content of the coal slime can be reduced under the wedge-shaped dehydration and extrusion dehydration action of the coal slime dehydrator, so that the coal slime can be directly mixed and burnt without being aired;
2. according to the coal slime dehydration process, by arranging the integrated water cleaner, the dosing system, the clean water tank and the wet coal slime ground, filtrate and washing water left after raw materials are processed by the coal slime dehydrator are lifted to the inside of the integrated water cleaner through a pump, so that the filtrate and the washing water are precipitated and separated from mud and water in the integrated water cleaner, the clean water automatically flows into the clean water tank for recycling production water in a workshop, the precipitated coal slime automatically flows into the wet coal slime tank and is stored by the wet coal slime, and coal slime dehydration can be carried out again subsequently, so that closed cycle processing of the coal slime is realized, and the process can realize the effects of standard discharge and recycling of sewage;
3. this coal slime dehydration technology through setting up at the inside wearing parts that is provided with of balladeur train feed bin and each device for the inside device that relates of this technology possesses more permanent life.
Drawings
FIG. 1 is a schematic flow diagram of the dehydration process of the present invention;
FIG. 2 is a schematic view of the structure of the present invention at A.
In the figure: 1. a carriage bin; 2. a scraper conveyor; 201. a sewer line; 3. a sewage tank; 4. a cloth slitter; 5. a coal slime dehydrator; 501. an electric control cabinet; 502. a hydraulic station; 503. a conveying roller; 504. a filter belt; 6. a rinsing water device; 7. a clean water tank; 8. an integrated water cleaner; 9. a dosing system; 10. a wet coal slime tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in this embodiment: the process method comprises the following steps:
the method comprises the following steps: introducing raw materials into a carriage bin 1 through a loader, and then dropping the raw materials onto a scraper conveyor 2;
step two: under the driving action of the scraper conveyor 2, the raw materials enter the inside of the cloth slitter 4, are treated by the cloth slitter 4 and then are guided into the coal slime dehydrator 5;
step three: after being processed by the cloth slitter 4, the raw materials are uniformly spread on a filter belt 504 in the coal slime dehydrator 5, under the driving action of the filter belt 504, the internal water content of the raw materials is reduced under the wedge-shaped dehydration and extrusion dehydration action of the coal slime dehydrator 5, and in the process, the washing water device 6 is started to remove impurities in the raw materials;
step four: after the raw material is subjected to high-dry extrusion by the coal slime dehydrator 5, most of capillary combined water in the raw material is extruded out, then the raw material is driven by the filter belt 504 to move at the high-pressure tail part of the coal slime dehydrator 5, and finally a filter cake with low water content is formed and discharged through a discharging end;
step five: the residual filtrate and washing water after the raw materials are treated by the coal slime dehydrator 5 are lifted to the inside of the integrated water purifier 8 through a pump, so that the filtrate and the washing water are precipitated and separated from the water in the integrated water purifier 8, the clear water automatically flows into the clear water tank 7 to recycle the workshop production water, the precipitated coal slime automatically flows into the wet coal slime tank 10 and is stored through the wet coal slime, and the coal slime dehydration can be subsequently carried out again, so that the closed cycle treatment of the coal slime is realized.
To sum up, integration water clarifier 8 is linked together through pipeline and medicine system 9, and medicine system 9 accessible pipeline injects the flocculating agent into integration water clarifier 8 inside, promotes the inside mud-water separation's of the inside mud of integration water clarifier 8 efficiency for this technology is to the treatment effeciency of sewage, can convenient and fast realize sewage discharge to reach standard and cyclic utilization.
Specifically, coal slime dehydration technology, its dewatering equipment includes balladeur train feed bin 1, 1 inside fixed mounting in balladeur train feed bin has scraper conveyor 2, 2 other end fixedly connected with cloth slitter 4 of scraper conveyor, 4 unloading end below fixedly connected with coal slime hydroextractor 5 of cloth slitter, 5 inside fixedly connected with washing water device 6 of coal slime hydroextractor, 5 below of coal slime hydroextractor are linked together with integration purger 8 through elevator pump and pipeline, 8 one sides of integration purger have clean water basin 7 through the pipeline connection, 8 tops of integration purger have medicine system 9 through the pipeline connection, 8 opposite sides of integration purger have wet coal slime basin 10 through the pipeline connection.
In summary, the sewage pipeline 201 is connected below the scraper conveyor 2, and the scraper conveyor 2 is connected with the sewage tank 3 through the sewage pipeline 201, so that the raw materials can be preliminarily filtered out of sewage in the process of being conveyed by the scraper conveyor 2, the efficiency of subsequent preparation is improved, and the sewage is led out to the inside of the sewage tank 3 through the sewage pipeline 201; the coal slime dehydrator 5 comprises an electric control cabinet 501, a hydraulic station 502, conveying rollers 503 and filter belts 504, the electric control cabinet 501 and the hydraulic station 502 are sequentially and fixedly installed at the top of the coal slime dehydrator 5, the conveying rollers 503 are movably connected inside the coal slime dehydrator 5, a plurality of groups of the conveying rollers 503 are arranged on the outer sides of the conveying rollers 503, raw materials are uniformly spread on a mesh belt after being processed by a cloth slitter 4, the distance between the upper filter belt 504 and the lower filter belt 504 is gradually reduced along with the forward operation of the filter belts 504, materials begin to be extruded, the pressure is gradually increased along the direction of the filter belts 504, and gap free water in the materials is extruded out, so that a filter cake with the water content of about 20 percent is basically formed, the process can rapidly reduce the water content of the coal slime, and the coal slime can be directly mixed and burnt without being aired; the carriage bin 1 and the required devices are internally provided with wear-resistant parts, so that the service life of the equipment can be prolonged.
The working principle and the using process of the invention are as follows: firstly, raw materials are guided into a carriage bin 1 through a loader, then the raw materials can fall into a scraper conveyor 2, the raw materials enter a cloth slitter 4 under the driving action of the scraper conveyor 2, the raw materials are guided into a coal slime dehydrator 5 after being processed by the cloth slitter 4, the raw materials can be uniformly spread on a filter belt 504 inside the coal slime dehydrator 5, under the driving action of the filter belt 504, the water content inside the raw materials is reduced under the wedge-shaped dehydration and extrusion dehydration action of the coal slime dehydrator 5, in the process, a washing water device 6 is started, impurities inside the raw materials can be removed, when the raw materials are subjected to high-dry extrusion of the coal slime dehydrator 5, most of capillary combined water inside the raw materials can be squeezed out, then the raw materials are driven by the filter belt 504 to move at the high-pressure tail part of the coal slime dehydrator 5, finally, filter cakes with lower water content are formed and discharged through a discharging end, the raw materials are lifted to the inside of the integrated water purifier 8 through a pump, so that the filtrate and the flushing water are precipitated and separated from water in the integrated water purifier 8, due to the fact that the dosing system 9 is arranged, a worker can inject a flocculating agent into the inside of the integrated water purifier 8, the separation efficiency of the water and the water is improved, after separation is completed, clear water automatically flows into the clear water tank 7 to recycle production water in a workshop, precipitated coal slime automatically flows into the wet coal slime tank 10 to be stored through the wet coal slime, coal slime dehydration can be carried out subsequently, and closed cycle processing of the coal slime is achieved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A coal slime dehydration process comprises the following process steps:
the method comprises the following steps: introducing raw materials into a carriage bin (1) through a loader, and then dropping the raw materials onto a scraper conveyor (2);
step two: under the driving action of the scraper conveyor (2), raw materials enter the inside of the cloth slitter (4), are processed by the cloth slitter (4) and then are guided into the coal slime dehydrator (5);
step three: after being processed by the cloth slitter (4), the raw materials are uniformly spread on a filter belt (504) in the coal slime dehydrator (5), under the driving action of the filter belt (504), the internal water content of the raw materials is reduced under the wedge-shaped dehydration and extrusion dehydration action of the coal slime dehydrator (5), and in the process, the washing water device (6) is started to remove impurities in the raw materials;
step four: after the raw materials are subjected to high-dry extrusion of the coal slime dehydrator (5), most of capillary combined water in the raw materials is extruded out, then the raw materials are driven by the filter belt (504) to move at the high-pressure tail part of the lower-phase coal slime dehydrator (5), and finally a filter cake with lower water content is formed and discharged through a discharging end;
step five: the residual filtrate and washing water after the raw materials are treated by the coal slime dehydrator (5) are lifted to the inside of the integrated water purifier (8) through a pump, so that the filtrate and the washing water are precipitated and separated from the water and the mud in the integrated water purifier (8), the washing water automatically flows into the clean water tank (7) to be recycled in workshop production water, the precipitated coal slime automatically flows into the wet coal slime tank (10), and is stored through wet coal slime, and coal slime dehydration can be subsequently carried out again, so that closed cycle treatment of the coal slime is realized.
2. The coal slime dehydration process according to the step five of claim 1, characterized in that: the integrated water purifier (8) is communicated with the dosing system (9) through a pipeline, and the dosing system (9) can inject a flocculating agent into the integrated water purifier (8) through the pipeline.
3. The coal slime dehydration process of claim 1, characterized in that: coal slime dehydration technology, its dewatering equipment include balladeur train feed bin (1), balladeur train feed bin (1) inside fixed mounting has scraper conveyor (2), scraper conveyor (2) other end fixedly connected with cloth slitter (4), cloth slitter (4) unloading end below fixedly connected with coal slime hydroextractor (5), the inside fixedly connected with sparge water device (6) of coal slime hydroextractor (5), coal slime hydroextractor (5) below is linked together through elevator pump and pipeline and integration purger (8), there is clean water basin (7) integration purger (8) one side through the pipe connection, there is medicine system (9) at integration purger (8) top through the pipe connection, integration purger (8) opposite side has wet coal slime basin (10) through the pipe connection.
4. The coal slime dehydration process of claim 3, characterized in that: the sewage pipeline (201) is connected below the scraper conveyor (2), and the scraper conveyor (2) is connected with the sewage pool (3) through the sewage pipeline (201).
5. The coal slime dehydration process of claim 3, characterized in that: coal slime hydroextractor (5) include automatically controlled cabinet (501), hydraulic pressure station (502), conveying roller (503) and filter belt (504), coal slime hydroextractor (5) top fixed mounting has automatically controlled cabinet (501) and hydraulic pressure station (502) in proper order, the inside swing joint of coal slime hydroextractor (5) has conveying roller (503), conveying roller (503) are provided with a plurality of groups, the conveying roller (503) outside is equipped with filter belt (504).
6. The coal slime dehydration process of claim 3, characterized in that: wear-resistant parts are arranged in the sliding frame bin (1) and the required devices.
CN202111643686.2A 2021-12-30 2021-12-30 Coal slime dehydration process Pending CN114455796A (en)

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CN202111643686.2A CN114455796A (en) 2021-12-30 2021-12-30 Coal slime dehydration process

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CN202111643686.2A CN114455796A (en) 2021-12-30 2021-12-30 Coal slime dehydration process

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201052437Y (en) * 2007-06-08 2008-04-30 辽宁鑫丰矿电设备制造有限公司 Combined frame belt filter press
CN201093849Y (en) * 2007-02-14 2008-07-30 湖北澄宇环保科技有限公司 Novel belt type compression filter-press dewatering integrated machine
CN101711929A (en) * 2009-11-25 2010-05-26 煤炭科学研究总院唐山研究院 Process for fully dehydrating coal under hydraulic coal mining well
JP6098023B1 (en) * 2015-12-28 2017-03-22 株式会社流機エンジニアリング Conveyor return belt cleaning apparatus and conveyor return belt cleaning method
CN106882915A (en) * 2017-03-24 2017-06-23 绵阳耀邦环保科技有限公司 High sulfur coal gangue prepares coal slime dehydration device
CN210086463U (en) * 2019-06-10 2020-02-18 焦作神华重型机械制造有限公司 Mine sump coal slime cleaning device
CN210855774U (en) * 2019-10-11 2020-06-26 赵誉 Sludge drying system
CN211158839U (en) * 2019-11-05 2020-08-04 上海重睿环保设备有限公司 Belt type filter press
CN211445476U (en) * 2020-07-24 2020-09-08 山东创新华一环境工程有限公司 Four-mesh-belt type filter press
CN112777901A (en) * 2021-01-08 2021-05-11 可迪尔能源装备(天津)有限公司 Sludge low-temperature belt type drying system
CN213610130U (en) * 2020-09-22 2021-07-06 金华市金莹矿业有限公司 Belt type squeezing filter
CN113754225A (en) * 2021-09-28 2021-12-07 北京首创污泥处置技术有限公司 Sequencing batch type deep dewatering belt type machine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201093849Y (en) * 2007-02-14 2008-07-30 湖北澄宇环保科技有限公司 Novel belt type compression filter-press dewatering integrated machine
CN201052437Y (en) * 2007-06-08 2008-04-30 辽宁鑫丰矿电设备制造有限公司 Combined frame belt filter press
CN101711929A (en) * 2009-11-25 2010-05-26 煤炭科学研究总院唐山研究院 Process for fully dehydrating coal under hydraulic coal mining well
JP6098023B1 (en) * 2015-12-28 2017-03-22 株式会社流機エンジニアリング Conveyor return belt cleaning apparatus and conveyor return belt cleaning method
CN106882915A (en) * 2017-03-24 2017-06-23 绵阳耀邦环保科技有限公司 High sulfur coal gangue prepares coal slime dehydration device
CN210086463U (en) * 2019-06-10 2020-02-18 焦作神华重型机械制造有限公司 Mine sump coal slime cleaning device
CN210855774U (en) * 2019-10-11 2020-06-26 赵誉 Sludge drying system
CN211158839U (en) * 2019-11-05 2020-08-04 上海重睿环保设备有限公司 Belt type filter press
CN211445476U (en) * 2020-07-24 2020-09-08 山东创新华一环境工程有限公司 Four-mesh-belt type filter press
CN213610130U (en) * 2020-09-22 2021-07-06 金华市金莹矿业有限公司 Belt type squeezing filter
CN112777901A (en) * 2021-01-08 2021-05-11 可迪尔能源装备(天津)有限公司 Sludge low-temperature belt type drying system
CN113754225A (en) * 2021-09-28 2021-12-07 北京首创污泥处置技术有限公司 Sequencing batch type deep dewatering belt type machine

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Application publication date: 20220510