CN102302976A - Coarse coal slime hydraulic classification process - Google Patents
Coarse coal slime hydraulic classification process Download PDFInfo
- Publication number
- CN102302976A CN102302976A CN201110186602A CN201110186602A CN102302976A CN 102302976 A CN102302976 A CN 102302976A CN 201110186602 A CN201110186602 A CN 201110186602A CN 201110186602 A CN201110186602 A CN 201110186602A CN 102302976 A CN102302976 A CN 102302976A
- Authority
- CN
- China
- Prior art keywords
- cyclone
- hydraulic
- hydraulic classiciation
- coal
- sedimentation basin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention provides a coarse coal slime hydraulic classification process. The process comprises the following steps of: 1, making a mixing solution of coarse slime and water to enter into a deep cone sedimentation tank to carry out a hydraulic classification, sending coal particles overflowing along the edge of the deep cone sedimentation tank into a flotation process, and forming the bottom flow of the deep cone sedimentation tank by using the coal particles sinking at the bottom of the deep cone sedimentation tank; 2, driving the bottom flow of the deep cone sedimentation tank into a hydraulic classification cyclone by using a feeding pump constant pressure to carry out a hydraulic re-classification, sending the coal particles overflowing along the edge of the hydraulic classification cyclone into the flotation process, and forming the bottom flow of the hydraulic classification cyclone by using the coal particles sinking at the bottom of hydraulic classification cyclone; and 3, making the bottom flow of the hydraulic classification cyclone to enter into a coal slime dewatering screen to carry out a screen separation, discharging the screen overflow of the coal slime dewatering screen, and placing the screen underflow mixed solution of the coal slime dewatering screen into the deep cone sedimentation tank to carry out the hydraulic re-classification. The coarse slime hydraulic classification process provided by the invention has the advantages of convenience for operation, time and labor saving, low energy consumption, good processing capacity, high classification efficiency and stable classification effect.
Description
Technical field
The present invention relates to a kind of coal preparation technique, specifically, relate to a kind of coarse slime hydraulic classiciation technology.
Background technology
Before coal preparation plant's flotation operation, need adopt hydraulic classification method to tell the coarse slime in the floatation feed, partition size be generally 0.3mm～0.5mm.At present, hydraulic classification equipment adopts dredging sump, spitzkasten more, concentrates funnel, hydrocyclone etc.; Dredging sump is in practical application; There is the shortcoming that disposal ability is little, noise is big, architectural volume is big; And; Drag for the interior liquid phase in hole and be turbulence state; Overflow is prone to sneak into above require the particle of size; Drag for easy buildup in the hole, these problems make that the classification efficiency of dredging sump is low, grading effect is undesirable; Spitzkasten finds that its underflow discharge capacity is wayward in practical application, cause classification efficiency low; The treating capacity and the operating efficiency that concentrate funnel are all lower; The treating capacity of small diameter hydraulic cyclone is little, and requires feed pressure to stablize; Simultaneously, the operation that existing hydraulic classiciation is produced is accomplished by manual work, and number of devices is many, the post personnel are many, and labour intensity is big, and operation sequence is complicated, is difficult to guarantee the technic index of expection, and production stability is poor, causes very big pressure to subsequent handling easily.
For this reason, people are seeking a kind of desirable technical solution always.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of simple to operate, time and labour saving, energy consumption is low, disposal ability is big, classification efficiency is high, grading effect is stable coarse slime hydraulic classiciation technology are provided.
The technical scheme that the present invention adopted is following: a kind of coarse slime hydraulic classiciation technology, and this technology may further comprise the steps:
The mixed liquor of step 1, coarse slime and water gets into dark awl sedimentation basin and carries out hydraulic classiciation, and the coal grain that will overflow along dark awl sedimentation basin edge is sent into floatation process, and the coal particle shape that sinks to dark awl sedimentation basin bottom becomes dark awl sedimentation basin underflow;
Step 2, will bore the sedimentation basin underflow deeply and squeeze into the hydraulic classiciation cyclone with the feed pump constant voltage and carry out waterpower classification again; The coal grain that will overflow along hydraulic classiciation cyclone edge is sent into floatation process, and the coal particle shape that sinks to hydraulic classiciation cyclone bottom becomes hydraulic classiciation cyclone underflow;
Step 3, make hydraulic classiciation cyclone underflow get into coal slime dewatering to sieve, coal slime dewatering is sieved oversize discharge, mixed liquor under the coal slime dewatering sieve sieve is inserted dark awl sedimentation basin carry out waterpower classification again.
Based on above-mentioned, said hydraulic classiciation cyclone is arranged on said coal slime dewatering sieve top, and said coal slime dewatering sieve is arranged on said dark awl sedimentation basin top.
Based on above-mentioned, said dark awl sedimentation basin comprises cylinder and the cone that is positioned at the cylinder bottom, and the height of said cone is greater than the diameter of said cylinder.
Based on above-mentioned, the diameter of said hydraulic classiciation cyclone is greater than 500mm.
Based on above-mentioned, every corresponding dark awl sedimentation basin of feed pump and a hydraulic classiciation cyclone.
Based on above-mentioned, the place is provided with the pan feeding press detection sensor at hydraulic classiciation cyclone feeding mouth, and said feed pressure detecting sensor connects the motor frequency conversion device of said feed pump.
The present invention has outstanding substantive distinguishing features and marked improvement with respect to prior art; Specifically; This coarse slime hydraulic classiciation technology combines existing classifying equipoment and grading technology cleverly; Learn from other's strong points to offset one's weaknesses; And separately advantage of performance to greatest extent; Coarse slime is being carried out in the process of circulation hydraulic classification; Form complementary; Efficiently solve problems such as existing hydraulic classiciation PROCESS FOR TREATMENT ability is little, classification efficiency is low, it has simple to operate, time and labour saving, energy consumption is low, disposal ability is big, classification efficiency is high, grading effect is stable advantage.
The specific embodiment
In order to further specify structure of the present invention and characteristics, provide the specific embodiment at present:
A kind of coarse slime hydraulic classiciation technology, this technology may further comprise the steps:
The mixed liquor of step 1, coarse slime and water gets into dark awl sedimentation basin and carries out hydraulic classiciation, and the coal grain that will overflow along dark awl sedimentation basin edge is sent into floatation process, and the coal particle shape that sinks to dark awl sedimentation basin bottom becomes dark awl sedimentation basin underflow; Usually, particle diameter overflows with overflow less than the coal grain of 0.5mm, and particle diameter gets into the sedimentation basin bottom greater than the coal grain of 0.5mm;
Step 2, will bore the sedimentation basin underflow deeply and squeeze into the hydraulic classiciation cyclone with the feed pump constant voltage and carry out waterpower classification again; The coal grain that will overflow along hydraulic classiciation cyclone edge is sent into floatation process, and the coal particle shape that sinks to hydraulic classiciation cyclone bottom becomes hydraulic classiciation cyclone underflow; Usually, particle diameter overflows with overflow less than the coal grain of 0.5mm, and overflow is mixed into flotation operation with dark awl sedimentation basin, and particle diameter gets into hydraulic classiciation cyclone bottom greater than the coal grain of 0.5mm;
Step 3, make hydraulic classiciation cyclone underflow get into coal slime dewatering to sieve, coal slime dewatering is sieved oversize discharge, mixed liquor under the coal slime dewatering sieve sieve is inserted dark awl sedimentation basin carry out waterpower classification again.
Based on above-mentioned; Said hydraulic classiciation cyclone is arranged on said coal slime dewatering sieve top; So that hydraulic classiciation cyclone underflow directly gets into coal slime dewatering and sieves, said coal slime dewatering sieve is arranged on said dark awl sedimentation basin top, so that mixed liquor is directly inserted dark awl sedimentation basin under the coal slime dewatering sieve sieve.
Based on above-mentioned, said dark awl sedimentation basin is built with armored concrete, and it comprises cylinder and the cone that is positioned at the cylinder bottom; Mixed liquor less than 2.5mm grade coal slime and water feeds from the center, pond; The less mixed liquor of particle and density overflows along the circumference in pond; The coal slime that particle and density are bigger is sunk to the bottom of cone; In order to allow sediment be deposited to the awl end smoothly; Cone will have the very big gradient; Be the diameter of the height of said cone greater than said cylinder, perhaps the height of said cone is greater than the diameter of said cone awl mouth.
Based on above-mentioned, said hydraulic classiciation cyclone is to utilize centrifugal force to strengthen the coal slime grading plant of coal slime settling velocity, and its diameter is greater than 500mm, large diameter cyclone disposal ability and hierarchical processing effect stability.
Based on above-mentioned, every corresponding dark awl sedimentation basin of feed pump and a hydraulic classiciation cyclone to guarantee the feed reliability of feed pump, are beneficial to the disposal ability and the classification stability that strengthen cyclone;
The place is provided with the pan feeding press detection sensor at hydraulic classiciation cyclone feeding mouth; Said feed pressure detecting sensor connects the motor frequency conversion device of said feed pump; The motor frequency conversion device of said feed pump carries out automatic frequency-conversion according to the pressure of said feed pressure detecting sensor collection; And utilize frequency converter to drag the feed pump motor; Guaranteed the constant voltage feed of feed pump; Realize the automatic adjusting and the centralized Control of coarse slime production system, further guaranteed the stability of technological parameter.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (6)
1. coarse slime hydraulic classiciation technology is characterized in that this technology may further comprise the steps:
The mixed liquor of step 1, coarse slime and water gets into dark awl sedimentation basin and carries out hydraulic classiciation, and the coal grain that will overflow along dark awl sedimentation basin edge is sent into floatation process, and the coal particle shape that sinks to dark awl sedimentation basin bottom becomes dark awl sedimentation basin underflow;
Step 2, will bore the sedimentation basin underflow deeply and squeeze into the hydraulic classiciation cyclone with the feed pump constant voltage and carry out waterpower classification again; The coal grain that will overflow along hydraulic classiciation cyclone edge is sent into floatation process, and the coal particle shape that sinks to hydraulic classiciation cyclone bottom becomes hydraulic classiciation cyclone underflow;
Step 3, make hydraulic classiciation cyclone underflow get into coal slime dewatering to sieve, coal slime dewatering is sieved oversize discharge, mixed liquor under the coal slime dewatering sieve sieve is inserted dark awl sedimentation basin carry out waterpower classification again.
2. coarse slime hydraulic classiciation technology according to claim 1 is characterized in that: said hydraulic classiciation cyclone is arranged on said coal slime dewatering sieve top, and said coal slime dewatering sieve is arranged on said dark awl sedimentation basin top.
3. coarse slime hydraulic classiciation technology according to claim 1 and 2 is characterized in that: said dark awl sedimentation basin comprises cylinder and the cone that is positioned at the cylinder bottom, and the height of said cone is greater than the diameter of said cylinder.
4. coarse slime hydraulic classiciation technology according to claim 1 and 2, it is characterized in that: the diameter of said hydraulic classiciation cyclone is greater than 500mm.
5. coarse slime hydraulic classiciation technology according to claim 1 is characterized in that: every corresponding dark awl sedimentation basin of feed pump and a hydraulic classiciation cyclone.
6. according to claim 1 or 5 described coarse slime hydraulic classiciation technologies, it is characterized in that: the place is provided with the pan feeding press detection sensor at hydraulic classiciation cyclone feeding mouth, and said feed pressure detecting sensor connects the motor frequency conversion device of said feed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110186602A CN102302976A (en) | 2011-06-28 | 2011-06-28 | Coarse coal slime hydraulic classification process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110186602A CN102302976A (en) | 2011-06-28 | 2011-06-28 | Coarse coal slime hydraulic classification process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102302976A true CN102302976A (en) | 2012-01-04 |
Family
ID=45376944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110186602A Pending CN102302976A (en) | 2011-06-28 | 2011-06-28 | Coarse coal slime hydraulic classification process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102302976A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372495A (en) * | 2012-04-13 | 2013-10-30 | 金易通科技(北京)股份有限公司 | Coarse slime separating system and method |
| CN103816992A (en) * | 2014-03-26 | 2014-05-28 | 威海市海王旋流器有限公司 | Coarse slime dense medium sorting technology and system |
| CN103831163A (en) * | 2012-11-20 | 2014-06-04 | 辽宁工程技术大学 | Pre-separation process of coal slime flotation |
| CN104307624A (en) * | 2014-08-27 | 2015-01-28 | 山东科技大学 | Coal slime recovery device and process |
| CN106669961A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Process for recycling fine coal from middlings |
| CN111072186A (en) * | 2020-01-19 | 2020-04-28 | 中国矿业大学 | System and method for cleaning commercial concrete mixing plant transportation tank car and purifying station sewage |
| CN114392833A (en) * | 2022-01-18 | 2022-04-26 | 河北能源职业技术学院 | Automatic system and method for coarse slime recovery energy conservation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1346297A (en) * | 1997-11-03 | 2002-04-24 | 选择性石油凝聚过程股份有限公司 | Controlled production and recovery of fine-coal agglomerates |
| US20070075002A1 (en) * | 2005-01-31 | 2007-04-05 | Sedgman | System and method for beneficiating ultra-fine raw coal with spiral concentrators |
| CN101502818A (en) * | 2009-03-05 | 2009-08-12 | 煤炭科学研究总院唐山研究院 | Integrated device for hydraulic classification and sorting of coarse slime as well as classification and sorting system |
-
2011
- 2011-06-28 CN CN201110186602A patent/CN102302976A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1346297A (en) * | 1997-11-03 | 2002-04-24 | 选择性石油凝聚过程股份有限公司 | Controlled production and recovery of fine-coal agglomerates |
| US20070075002A1 (en) * | 2005-01-31 | 2007-04-05 | Sedgman | System and method for beneficiating ultra-fine raw coal with spiral concentrators |
| CN101502818A (en) * | 2009-03-05 | 2009-08-12 | 煤炭科学研究总院唐山研究院 | Integrated device for hydraulic classification and sorting of coarse slime as well as classification and sorting system |
Non-Patent Citations (1)
| Title |
|---|
| 杨洪献: "Modbus总线在田庄选煤厂粗煤泥DCS控制系统中的应用", 《中国煤炭》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372495A (en) * | 2012-04-13 | 2013-10-30 | 金易通科技(北京)股份有限公司 | Coarse slime separating system and method |
| CN103372495B (en) * | 2012-04-13 | 2015-09-23 | 金易通科技(北京)股份有限公司 | A kind of separation of coarse slime system and method for separating |
| CN103831163A (en) * | 2012-11-20 | 2014-06-04 | 辽宁工程技术大学 | Pre-separation process of coal slime flotation |
| CN103831163B (en) * | 2012-11-20 | 2015-10-28 | 辽宁工程技术大学 | Coal slurry flotation is process for discarding tailings in advance |
| CN103816992A (en) * | 2014-03-26 | 2014-05-28 | 威海市海王旋流器有限公司 | Coarse slime dense medium sorting technology and system |
| CN103816992B (en) * | 2014-03-26 | 2018-08-21 | 威海市海王旋流器有限公司 | A kind of coarse slime dense medium sorting process and system |
| CN104307624A (en) * | 2014-08-27 | 2015-01-28 | 山东科技大学 | Coal slime recovery device and process |
| CN106669961A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Process for recycling fine coal from middlings |
| CN111072186A (en) * | 2020-01-19 | 2020-04-28 | 中国矿业大学 | System and method for cleaning commercial concrete mixing plant transportation tank car and purifying station sewage |
| CN114392833A (en) * | 2022-01-18 | 2022-04-26 | 河北能源职业技术学院 | Automatic system and method for coarse slime recovery energy conservation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102302976A (en) | Coarse coal slime hydraulic classification process | |
| CN104291469B (en) | Strengthening fine sand removes system and method | |
| CN103816992A (en) | Coarse slime dense medium sorting technology and system | |
| CN203791036U (en) | Coarse slime dense medium separation system | |
| CN202238273U (en) | Silt separation bucket | |
| CN103447159B (en) | Cyclone micro bubble floatation column separation equipment with built-in inclined plates, and method | |
| CN103831163B (en) | Coal slurry flotation is process for discarding tailings in advance | |
| CN102755768A (en) | Sludge treatment device used at pressure type pumping and drainage outlet | |
| CN203874891U (en) | Backwater feed device with fractional concentration function | |
| CN202315444U (en) | Multilayer precipitator | |
| JP4809502B1 (en) | Rock fine sand recovery device | |
| CN201592140U (en) | Flotation tank without driving | |
| CN104549717A (en) | Processing system of stones | |
| CN103657162A (en) | Efficient and energy-saving solid-liquid separator | |
| CN204523211U (en) | Building stones system of processing | |
| CN204121814U (en) | A kind of enrichment facility of molybdenum ore flotation tailing pulp | |
| CN207726766U (en) | Flotation tank for water-oil separating | |
| CN202700154U (en) | Sludge treatment device at pressure type water pumping and drainage outlet | |
| CN209378609U (en) | A kind of dry discharge cycle system of slurry environmental protection | |
| CN206828172U (en) | A kind of equipment for washed-out sand sewage treatment process | |
| CN202283422U (en) | Efficient thickener | |
| CN207660567U (en) | A kind of mud solid phase collection dewatering device | |
| CN108623073B (en) | A kind of recycling method for the papermaking wastewater that waste paper pulp-making process generates | |
| CN202527264U (en) | Conical hydraulic classifier | |
| CN208250140U (en) | A kind of river and lake pool gushes bed mud deep-graded processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |