CN102399028A - Technology for treating coal slime water through secondary flow and settlement filtering centrifuge - Google Patents
Technology for treating coal slime water through secondary flow and settlement filtering centrifuge Download PDFInfo
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- CN102399028A CN102399028A CN2010102866759A CN201010286675A CN102399028A CN 102399028 A CN102399028 A CN 102399028A CN 2010102866759 A CN2010102866759 A CN 2010102866759A CN 201010286675 A CN201010286675 A CN 201010286675A CN 102399028 A CN102399028 A CN 102399028A
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Abstract
The invention discloses a technology for treating coal slime water through a secondary flow and a settlement filtering centrifuge, and belongs to the technical field of coal slime water treatment. The technology comprises the following steps that 1, coal slime water flows into a secondary flow classifying screen and is classified; 2, an underflow comprising coarse particles is fed into a filtering centrifuge and then is treated and an overflow comprising fine particles is fed into a condensation tank and then is concentrated; 3, the overflow concentrated by the condensation tank is utilized as circulating water for recycle and an underflow is fed into a filter press and then is treated; 4, filtrate obtained by the filtering centrifuge is fed into the filter press and then is treated and coal slime obtained by the filtering centrifuge is utilized as a product and is sold; And 5, filter cakes obtained by the filter press is coal slime, is utilized as a product and is sold, and filtrate obtained by the filter press is utilized as circulating water for recycle. In the invention, a settlement filtering centrifuge is utilized as a centrifugal hydroextractor. The technology provided by the invention reduces a floor space of a coal preparation plant, saves production time and reduces repairer labor intensity.
Description
Technical field
The present invention relates to the treatment process of black water.Specifically be that a kind of secondary stream and screen bowl centrifuge are handled black water technology
Background technology
At present, coal preparation plant is that thickener concentrates and filter press dehydration associating with the technology of handling black water now, and its technological process as shown in Figure 1.The problem of its existence is:
1, floor space is big, and concentration basin is generally 20m, 25m, 30m according to its treatment capacity different diameter and does not wait, and pressure filter is 50m according to the different floor spaces of its treatment capacity
2, 60m
2Not etc.
2, treatment capacity is little, the concentration basin that it is 30m that the coal separating plant of a processing power 5.0Mt/a generally needs four diameters and six occupation of land 60m
2Pressure filter.
3, maintenance capacity is big, thickner scraper seriously corroded in black water, and fragile, canvas press cloth is often changed, otherwise influences its dehydrating effect, and the problems referred to above exist a bit all will shut down processing, influences the PT.
Summary of the invention
The present invention provides a kind of secondary stream and screen bowl centrifuge to handle black water technology, to reduce coal separating plant's floor space, practices thrift the PT, and alleviating check man's labour intensity is purpose, realizes the processing of coal separating plant's black water.
The present invention realizes with following technical scheme: a kind of secondary stream and screen bowl centrifuge are handled black water technology, and the equipment that is adopted is: second flow grading sieve, screen bowl centrifuge, thickner and pressure filter; Between second flow grading sieve and the concentration basin, between concentration basin and the pressure filter, between second flow grading sieve and the screen bowl centrifuge, adopt pipe connection between screen bowl centrifuge and the pressure filter respectively.
Concrete technical process is following: black water gets into the second flow grading sieve, and after the second flow grading sieve carried out classification, its underflow was that coarse particles is sent into filtering centrifuge and handled, and its overflow is that fine particle is sent into concentration basin and concentrated; Overflow water after concentration basin concentrates gets into the washery recycle system as recirculated water and utilizes, and underflow is sent into pressure filter and handled by pressure filter; Filtrate water after the filtering type whizzer is handled is sent into pressure filter and is handled by pressure filter, sells as the finished product; After pressure filter is handled, get filter cake and filtrate water, filter cake is coal slime, and as production marketing, filtrate water gets into the washery recycle system as recirculated water and utilizes.Stage equipment adopts secondary stream, and dehydration equipment adopts sedimentation filter formula whizzer.
Advantage of the present invention is: reduce coal separating plant's floor space, practice thrift the PT, alleviate check man's labour intensity.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the prior art process flow sheet;
Fig. 2 is a process flow sheet of the present invention.
Embodiment
Embodiment
Present embodiment is the coal separating plant of a processing power 5.0Mt/a (5,000,000 tons/year).
Equipment has: two second flow grading sieve, floor space 4m that diameter is 2.3m
2Screen bowl centrifuge, thickner and floor space that diameter is 20m be 50m
2Pressure filter.Two second flow grading sieve parallel connection uses that diameter is 2.3m; Between second flow grading sieve and the concentration basin, between concentration basin and the pressure filter, between second flow grading sieve and the screen bowl centrifuge, adopt pipe connection between screen bowl centrifuge and the pressure filter respectively;
As shown in Figure 2, black water gets into the second flow grading sieve, and after the second flow grading sieve carried out classification, its underflow was that coarse particles is sent into filtering centrifuge and handled, and its overflow is that fine particle is sent into concentration basin and concentrated; Overflow water after concentration basin concentrates gets into the washery recycle system as recirculated water and utilizes, and underflow is sent into pressure filter and handled by pressure filter; Filtrate water after the filtering type whizzer is handled is sent into pressure filter and is handled by pressure filter, sells as the finished product; After pressure filter is handled, get filter cake and filtrate water, filter cake is coal slime, and as production marketing, filtrate water gets into the washery recycle system as recirculated water and utilizes.
Contrast with existing technology: the concentration basin that it is 30m that prior art needs four diameters and six occupation of land 60m
2Pressure filter.The present invention only needs a concentration basin and a pressure filter.Not only practice thrift floor space, and reduced equipment amount.
Claims (2)
1. secondary stream and screen bowl centrifuge are handled black water technology, it is characterized in that:
The equipment that is adopted is: second flow grading sieve, screen bowl centrifuge, thickner and pressure filter; Between second flow grading sieve and the concentration basin, between concentration basin and the pressure filter, between second flow grading sieve and the screen bowl centrifuge, adopt pipe connection between screen bowl centrifuge and the pressure filter respectively;
Concrete technical process is following: black water gets into the second flow grading sieve, and after the second flow grading sieve carried out classification, its underflow was that coarse particles is sent into filtering centrifuge and handled, and its overflow is that fine particle is sent into concentration basin and concentrated; Overflow water after concentration basin concentrates gets into the washery recycle system as recirculated water and utilizes, and underflow is sent into pressure filter and handled by pressure filter; Filtrate water after the filtering type whizzer is handled is sent into pressure filter and is handled by pressure filter, sells as the finished product; After pressure filter is handled, get filter cake and filtrate water, filter cake is coal slime, and as production marketing, filtrate water gets into the washery recycle system as recirculated water and utilizes.
2. secondary stream according to claim 1 and screen bowl centrifuge are handled black water technology, it is characterized in that stage equipment adopts secondary stream, and dehydration equipment adopts sedimentation filter formula whizzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102866759A CN102399028A (en) | 2010-09-16 | 2010-09-16 | Technology for treating coal slime water through secondary flow and settlement filtering centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102866759A CN102399028A (en) | 2010-09-16 | 2010-09-16 | Technology for treating coal slime water through secondary flow and settlement filtering centrifuge |
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|---|---|
| CN102399028A true CN102399028A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102866759A Pending CN102399028A (en) | 2010-09-16 | 2010-09-16 | Technology for treating coal slime water through secondary flow and settlement filtering centrifuge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872645A (en) * | 2012-10-18 | 2013-01-16 | 中煤科工集团武汉设计研究院 | Long-distance pipeline coal conveying terminal dehydration system device and dehydration method |
| CN102897950A (en) * | 2012-10-18 | 2013-01-30 | 中煤科工集团武汉设计研究院 | Method for treating coal slurry water at long-distance pipeline coal transporting terminal |
| CN104478120A (en) * | 2014-11-14 | 2015-04-01 | 李军祥 | Coal washing wastewater cycle treatment technology |
| CN104773872A (en) * | 2015-04-03 | 2015-07-15 | 中国神华能源股份有限公司 | Coal slime treatment system and process |
| CN110156292A (en) * | 2019-05-29 | 2019-08-23 | 中清深利(深圳)科技有限公司 | A kind of slurry dewatering solidifying and resource utilization method |
| CN112390372A (en) * | 2020-11-09 | 2021-02-23 | 河南省地质矿产勘查开发局第二地质环境调查院 | Water collecting and distributing tank, and recycling treatment system and method for mineral processing industrial wastewater |
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| CN1948434A (en) * | 2006-11-10 | 2007-04-18 | 张春林 | Two stage dewatering technology of fine coal mud |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872645A (en) * | 2012-10-18 | 2013-01-16 | 中煤科工集团武汉设计研究院 | Long-distance pipeline coal conveying terminal dehydration system device and dehydration method |
| CN102897950A (en) * | 2012-10-18 | 2013-01-30 | 中煤科工集团武汉设计研究院 | Method for treating coal slurry water at long-distance pipeline coal transporting terminal |
| CN104478120A (en) * | 2014-11-14 | 2015-04-01 | 李军祥 | Coal washing wastewater cycle treatment technology |
| CN104773872A (en) * | 2015-04-03 | 2015-07-15 | 中国神华能源股份有限公司 | Coal slime treatment system and process |
| CN110156292A (en) * | 2019-05-29 | 2019-08-23 | 中清深利(深圳)科技有限公司 | A kind of slurry dewatering solidifying and resource utilization method |
| CN112390372A (en) * | 2020-11-09 | 2021-02-23 | 河南省地质矿产勘查开发局第二地质环境调查院 | Water collecting and distributing tank, and recycling treatment system and method for mineral processing industrial wastewater |
| CN112390372B (en) * | 2020-11-09 | 2023-04-28 | 河南省地质矿产勘查开发局第二地质环境调查院 | Water collecting and diverting tank, and mineral separation industrial wastewater recycling treatment system and method |
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Application publication date: 20120404 |