CN101185912A - Torbanite washbox, coal separation system and coal separation method thereof - Google Patents
Torbanite washbox, coal separation system and coal separation method thereof Download PDFInfo
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- CN101185912A CN101185912A CNA2007103010058A CN200710301005A CN101185912A CN 101185912 A CN101185912 A CN 101185912A CN A2007103010058 A CNA2007103010058 A CN A2007103010058A CN 200710301005 A CN200710301005 A CN 200710301005A CN 101185912 A CN101185912 A CN 101185912A
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Abstract
The invention discloses a coal block jigger, a coal selection system and a coal selection method, which belongs to coal jigging selection field and is more particularly suitable for select coal blocks. The coal block jigger of the invention is formed by multiplying the inclined angle of a filter board of the existing multi-section jigger and changing a overflow spillway into a clean coal outlet passage; the coal selection system of the coal block jigger comprises the coal block jig, a rock refuse bucket elevator, a middling bucket elevator, a clean coal bucket elevator, a recycling water bucket, a recycling water pump, a water supply device and so on; and the coal selection of the coal block jigger can one-time select rock refuse, middlings, clean coal and a plurality of other products, and the water supply amount in selection is small. By adopting the invention to select coal blocks, processing amount can be increased, a great deal of water can be saved, washing and cleaning cost can be lowered, system steps can be simplified and system overall investment is reduced, thus achieving the effect that can not be achieved by the existing multi-section jigger. The invention is a brand new coal blocks selection jigger, a coal selection system and a coal selection method, which can be used for selecting steam coal and can also substitute dense medium vertical wheelers and inclined wheelers for coal block selection.
Description
Affiliated technical field
The present invention relates to a kind of cleaning unit, coal separation system and coal preparation method thereof, especially relate to a kind of jigging machine, coal separation system and coal preparation method thereof that is used for sorting lump coal.
Background technology
At present, when with jigging machine coarse coal being carried out sorting both at home and abroad, generally use traditional common jigging machine, coal separation system and coal preparation method, 192～233 pages of " mineral dressing " books of publishing just like publishing house of China Mining University in October, 2002 second impression and 262～265 pages are contained, and for example Chinese coal industry publishing house publish in April, 1993 " 329～435 pages of coal separation handbook one books are contained, need in this equipment, the system and method to come loose and the conveying bed, therefore have power consumption and the great problem of water consumption with a large amount of water; Because the bulk speed of travel is slow, the unit are disposal ability is than conventional a large amount of declines again; Also because in this method and apparatus work, a large amount of water and light product mix common the discharge, have increased system-wide basic link, make supporting for this reason screening, concentrate, links such as press filtration and flotation are huge, whole system is complicated, increase system investment at double.China national Department of Intellectual Property disclosed publication number on August 16th, 2006 is contained a kind of jigging discharge refuse coal preparation method and a discharge refuse jigging machine of 1817469A, though solved the few and system's simple question of water consumption, but this machine and method only are applicable to the coarse coal discharge refuse, once can only sub-elect heavy product during feed coal, light product, and three kinds of products such as floating thing, exist the precision that has guaranteed heavy product just not guarantee the precision of light product, the precision that has guaranteed light product is with regard to the problem of the precision that do not guarantee heavy product, to requiring once to sub-elect spoil, middle coal, the coarse coal sorting of products such as cleaned coal can not be used.
Summary of the invention
The purpose of this invention is to provide a kind of lump coal jigging machine that lump coal is carried out sorting, this equipment can once sub-elect multiple products such as spoil, middle coal, cleaned coal, and can add high throughput, a large amount of using water wisely, reduce the washing cost, can obtain the simplification system, the effect of minimizing system investment.
Another object of the present invention provides a kind of coal separation system that uses described lump coal jigging machine.
A further object of the present invention provides a kind of coal preparation method of realizing described lump coal jigging machine.
Technical scheme of the present invention is summarized as follows:
A kind of lump coal jigging machine of the present invention, comprise existing multistage jigging machine, the present invention strengthens several times to the sieve plate inclination angle of the spoil section of existing multistage jigging machine and middle coal section, and overfall made into cleaned coal discharge road, described spoil section port of export sieve plate face and described in the difference in height of coal section arrival end sieve plate face 50 to 700mm.
Lump coal jigging machine of the present invention, the sieve plate inclination angle of wherein said lump coal jigging machine, on the exhaust end direction, every section reduces gradually from feeding end.The scope at spoil section sieve plate inclination angle is at 8 to 30 degree, and middle coal section sieve plate inclination angle scope is at 5 to 25 degree.
Lump coal jigging machine of the present invention wherein divides in the selections at each the discharge arrangement for adjusting height that can regulate the discharge height all is installed.
Lump coal jigging machine of the present invention, the cleaned coal discharge gate top of wherein said lump coal jigging machine is mounted with the floating thing automatic collecting device.
A kind of lump coal coal jigging of the present invention system, it comprises the lump coal jigging machine, the spoil bucket elevator, middle coal bucket elevator, the cleaned coal bucket elevator, the circulation bucket, water circulating pump, water replanishing device etc., described lump coal jig body comprises the gangue sorting section, middle coal divides selections, cleaned coal discharge road, wood slag overfall, top water device etc., the import of described spoil bucket elevator is sealably coupled on the discharge gate of gangue sorting section by the tubulose chute, coal divided on the discharge gate of selections during the import of coal bucket elevator was sealably coupled to by the tubulose chute in described, the import of described cleaned coal bucket elevator is sealably coupled on the outlet in cleaned coal discharge road by the tubulose chute, described wooden slag overfall inserts the circulation bucket with pipeline, described water circulating pump import is connected with circulation bucket underflow opening by pipeline, described water circulating pump outlet is connected with top water device by pipeline, and described water replanishing device inserts the circulation bucket.
Lump coal coal jigging of the present invention system, wherein said wooden slag overfall inserts light product bucket elevator by chute, opens an overfall in light product bucket elevator underwater, and inserts the circulation bucket with pipeline.
Lump coal coal jigging of the present invention system, wherein with cleaned coal sieve equivalent substitution cleaned coal bucket elevator, backwater inserts the circulation bucket.
A kind of lump coal coal jigging method of the present invention, comprise existing common multistage coal jigging method, once can sub-elect multiple products such as spoil, middle coal, cleaned coal and wooden slag when being selected in lump coal with this method, the supplementing water consumption is very little in the assorting room, and this method comprises the steps:
1. be ready to the lump coal jigging machine, and complete bed, fill with water;
2. start-up system is adjusted parameter, enters pre-production status;
3. add raw coal, normal boot-strap;
4. discharge spoil from the spoil section, coal during therefrom the coal section is discharged is discharged cleaned coal from cleaned coal discharge road, isolates floating thing from the water surface;
5. the suitable water of adding disappearance;
6. ordinary production is carried out sorting by the density difference.
Lump coal coal jigging method of the present invention, wherein the recirculated water consumption is very little in washing process, or without recirculated water.
Lump coal coal jigging method of the present invention is limited to 6 millimeters to 50 millimeters under the wherein preferable suitable material size, be limited to 300 millimeters on the material size.
Compared with the prior art the present invention has fully shown following advantage:
(1) realized moisturizing consumption seldom.When lump coal goes into to wash, under the effect of high inclination-angle sieve plate, only depend on wind to realize function loose and that carry bed, reached the effect that reduces maybe without top water;
(2) treating capacity strengthens, and under the effect of high inclination-angle sieve plate, coarse coal speed of travel in bed is accelerated, and has therefore strengthened the throughput of unit are, has improved the disposal ability of jigging machine greatly;
(3) general power that needs of coal separation reduces greatly, reduction at double power consumption, reduced the washing cost;
(4) reduced the supporting screening of former needs, concentrate, links such as press filtration and flotation, system is simplified greatly;
(5) reduced system's investment at double, gross investment and totle drilling cost reduce greatly;
(6) improved system reliability, system is simple, moves more reliable.
Adopting lump coal jigging machine of the present invention, coal separation system and coal preparation method to carry out lump coal separation, can obtain the existing inaccessiable effect of traditional common jigging machine, is brand-new lump coal jigging machine and coal separation system and method in a kind of coal washing industry.Can be used for steam coal separation, upright wheel of also alternative heavy Jie and oblique wheel are as lump coal separation.
Description of drawings
Fig. 1 represents a kind of structural representation of lump coal jigging machine
Fig. 2 represents the structural representation of another kind of lump coal jigging machine
Fig. 3 represents the structural representation of the third lump coal jigging machine
Fig. 4 represents a kind of lump coal jigging system flow schematic diagram
Fig. 5 represents another kind of lump coal jigging system flow schematic diagram
Fig. 6 represents the third lump coal jigging system flow schematic diagram
Among the figure:
1. spoil section jig body, 2. spoil section bed cell body, 3. spoil section sieve plate, 4. spoil section waste rock discharge device, 5. in coal section feeding mouth, 6. in coal section sieve plate, 7. middle coal section bed cell body, 8. in coal section discharge device, 9. cleaned coal discharge road inlet, 10. cleaned coal discharge road, 11. spoil section air chambers, 12. spoil Duan Dingshui devices, 13. spoil discharge road, 14. spoil section discharge gate, coal Duan Dingshui device in 15., coal section discharge gate in 16., 17. middle coal section air chamber, 18. communication channel, in 19. coal discharge road, 20. cleaned coal discharge gates, 21. spoil section discharge arrangement for adjusting height, 22. middle coal section discharge arrangement for adjusting height, the automatic discharger of 23. floating things, coal section jig body in 24., 25. lump coal jigging machine, 26. the cleaned coal bucket elevator, coal bucket elevator in 27., 28. spoil bucket elevators, 29. water circulating pump, 30. the circulation bucket, 31. cleaned coal sieve, 32. water replanishing devices.
The specific embodiment
A kind of lump coal jigging machine provided by the invention is further described below in conjunction with two-part air chamber lump coal jigging machine:
Embodiment 1, among Fig. 1, and a kind of two-part air chamber lump coal jigging machine, it comprises common spoil section jig body 1 and common middle coal section jig body 24 and cleaned coal discharge road 10.Several times are strengthened than the sieve plate inclination angle of common jigging machine in the inclination angle of the spoil section sieve plate 3 in the described spoil section jig body 1.Several times are strengthened than the sieve plate inclination angle of common jigging machine in the inclination angle of the middle coal section sieve plate 6 in described in the coal section jig body 24.The inclination angle of described spoil section sieve plate 3 is bigger than the inclination angle of coal section sieve plate 6 in described.The difference in height of described spoil section port of export sieve plate face and described middle coal section arrival end sieve plate face remains between 50 to 700 millimeters.Described cleaned coal discharge road 10 is the closed device of upper shed, form by cleaned coal discharge road inlet 9, communication channel 18 and cleaned coal discharge gate 20, the cleaned coal discharge road inlet 9 in described cleaned coal discharge road 10 is adaptive with the discharge gate institute of middle coal section jig body 24, and periphery is tightly connected, and also can become the common port of same wall.Described discharge road 10 topmosts are rectangular shape, and the bottom is the communication channel 18 of tubular.Described communication channel 18 can be straight, also can make various bendings, can also make oblique or other form, section can be the square type, can also be round or other shapes, adopt rounding off to connect when the section configuration on described communication channel 18 section configurations and 10 tops, cleaned coal discharge road is different between two parts.Described communication channel 18 be provided with cleaned coal discharge gate 20 bottom.Described communication channel 18 is changeable, can set on demand.
Based on same principle and method, the present invention also can be controlled at the optimum range as the inclination angle of the spoil section sieve plate 3 among Fig. 1 between 8 to 30 degree, in the optimum range at inclination angle of coal section sieve plate 6 be controlled at 5 to 25 spend between.
Based on same principle and method, the present invention also can increase the cell body degree of depth as spoil section bed cell body 2 among Fig. 1 and middle coal section bed cell body 7.
During present embodiment work, the lump coal that adds described spoil section jig body 1, under the effect of pulsation water body that air chamber 11 produces and high inclination-angle sieve plate, the loose of bed and conveying have been finished by wind, carry out sorting by the density difference, the lower floor's spoil after the sorting is behind spoil section waste rock discharge device 4 and spoil discharge road 13, mix with the down saturating sieve thing of sieve, discharge from spoil section discharge gate 14; Upper strata product after the sorting, comprise cleaned coal and middle coal etc., therefrom coal section feeding mouth 5 enters into coal section jig body 24, under the effect of pulsation water body that air chamber 17 produces and high inclination-angle sieve plate, finished the loose of bed and conveying by wind, carry out sorting again by the density difference, coal product in the lower floor after the sorting, sieve product thoroughly behind coal section discharge device 8 and the middle coal discharge road 19 and under the sieve in the process and mix, therefrom coal section discharge gate 16 discharges; Head coal product after the sorting enters cleaned coal discharge road 10 from cleaned coal discharge road inlet 9, behind communication channel 18, discharges from cleaned coal discharge gate 20; Floater after the sorting comprises wooden unit, light foreign material etc., drags for or discharges from the water surface; In the assorting room, suitable from spoil Duan Dingshui device 12 and coal Duan Dingshui device 15 add the water of excalation; And can adjust the displacement size of spoil or middle coal on demand, guarantee that the spoil and the cleaned coal of being discharged reach the requirement that needs precision; Thereby finish the sorting work of raw coal.
In present embodiment when work,, job step, method, principle are described like embodiment 1, and the adjustment of the spoil section discharge arrangement for adjusting height 21 that different is by the discharge the regulated height installed makes the coal amount in the containing of spoil of discharging reach the requirement of needs; The adjustment of the middle coal section discharge arrangement for adjusting height 22 by the discharge the regulated height installed makes the requirement that cleaned coal reaches to be needed.
Based on same principle and method, the present invention also can realize 26S Proteasome Structure and Function as described in Figure 2 on as embodiment 2 described lump coal jigging machines.
In present embodiment when work,, job step, method, principle are described like embodiment 1, and different is to discharge the floating things such as wooden slag that float on the surface by the automatic discharger 23 of the floating thing of installing.
Based on same principle and method, technical scheme of the present invention also can be embodied as three sections or multistage lump coal jigging machine on the jigging machine of three sections or multistage.
Based on same principle and method, technical scheme of the present invention also can be embodied as the lump coal jigging machine of other pattern on other pattern jigging machine.
A kind of lump coal jigging coal washing provided by the invention system is further described below in conjunction with two sections lump coal jigging machines:
During present embodiment work, lump coal enters lump coal jigging machine 25, and the spoil after the sorting enters spoil bucket elevator 28 from spoil section discharge gate 14, discharges the spoil product by the lifting and the dehydration back of spoil bucket elevator 28; Middle coal after the sorting therefrom coal section discharge gate 16 enters middle coal bucket elevator 27, product of coal in discharging by the lifting of middle coal bucket elevator 27 and the back of dewatering; Cleaned coal after the sorting enters cleaned coal bucket elevator 26 from cleaned coal discharge gate 20, discharges head coal product by the lifting and the dehydration back of cleaned coal bucket elevator 26; Wooden slag sheet after the sorting enters circulation bucket 30 from wooden slag overfall under the drive of part flowing water; In circulation bucket 30, pull floating thing out from the water surface after, recirculated water is squeezed into lump coal jigging machine top water device by water circulating pump 29, and enters the lump coal jigging machine and realize recycling; The moisture that various products are taken away in the assorting room is added to circulation bucket 30 by water replanishing device 32, keeps the water consumption balance; Thereby finish the sorting work of raw coal.
Based on same principle and method, as a kind of improvement of Fig. 4, can or insert cleaned coal bucket elevator 26 with wooden slag overfall cancellation, and insert circulation bucket 30 again from cleaned coal bucket elevator 26 underwater openings by pipeline, as Fig. 5, do the effect and the purpose that also can reach same like this.In the different just work, wooden slag sheet is pulled out or is gone out by the bucket bailing with cleaned coal from the lump coal jigging machine water surface, recirculated water enters circulation bucket 30 again by cleaned coal bucket elevator 26.
Based on same principle and method, as a kind of improvement of Fig. 5, can do cleaned coal discharge road very shortly, sieve 31 equivalent substitution cleaned coal bucket elevators 26 with cleaned coal, backwater inserts circulation bucket 30, as Fig. 6, does the effect and the purpose that also can reach same like this.
Based on same principle and method, technical scheme of the present invention also can be embodied as three sections or multistage lump coal jigging system on the jigging machine of three sections or multistage.
A kind of lump coal coal jigging method provided by the invention, it comprises existing multistage coal jigging method, different is once to sub-elect multiple products such as spoil, middle coal, cleaned coal and wooden slag when being selected in lump coal with this method, the supplementing water consumption is very little in the assorting room, and this method comprises the steps:
1. be ready to the lump coal jigging machine, and complete bed, fill with water;
2. start-up system is adjusted parameter, enters pre-production status;
3. add raw coal, normal boot-strap;
4. discharge spoil from the spoil section, coal during therefrom the coal section is discharged is discharged cleaned coal from cleaned coal discharge road, isolates floating thing from the water surface;
5. the suitable water of adding disappearance;
6. ordinary production is carried out sorting by the density difference.
Lump coal coal jigging method provided by the invention, wherein the recirculated water consumption is very little in washing process, or without recirculated water.
Lump coal coal jigging method provided by the invention is limited to 6 millimeters to 50 millimeters under the wherein preferable suitable material size, be limited to 300 millimeters on the material size.
The invention discloses a kind of lump coal jigging machine, coal separation system and coal preparation method; though more than enumerated less embodiment; but for those of ordinary skill in the art; to some remodeling that the present invention did, improvement, replacement etc.; perhaps above-mentioned embodiment is done any combination and is changed, and all drops within protection scope of the present invention.
Claims (10)
1. lump coal jigging machine, comprise existing multistage jigging machine, it is characterized in that: the sieve plate inclination angle of the spoil section of existing multistage jigging machine and middle coal section is strengthened, and overfall made into cleaned coal discharge road, described spoil section port of export sieve plate face and described in the difference in height of coal section arrival end sieve plate face at 50 to 700 millimeters.
2. a kind of lump coal jigging machine as claimed in claim 1, it is characterized in that: the sieve plate inclination angle of described lump coal jigging machine, on the exhaust end direction, every section reduces gradually from feeding end, the scope at spoil section sieve plate inclination angle is at 8 to 30 degree, and middle coal section sieve plate inclination angle scope is at 5 to 25 degree.
3. a kind of lump coal jigging machine as claimed in claim 1 or 2 is characterized in that: divide in the selections at each the discharge arrangement for adjusting height that can regulate the discharge height all is installed.
4. a kind of lump coal jigging machine as claimed in claim 1 or 2 is characterized in that: the cleaned coal discharge gate top of described lump coal jigging machine is mounted with the floating thing automatic collecting device.
5. lump coal coal jigging of the present invention system, it comprises the lump coal jigging machine, the spoil bucket elevator, middle coal bucket elevator, the cleaned coal bucket elevator, the circulation bucket, water circulating pump, water replanishing device etc., it is characterized in that described lump coal jig body comprises the gangue sorting section, middle coal divides selections, cleaned coal discharge road, wood slag overfall, top water device etc., the import of described spoil bucket elevator is sealably coupled on the discharge gate of gangue sorting section by the tubulose chute, coal divided on the discharge gate of selections during the import of coal bucket elevator was sealably coupled to by the tubulose chute in described, the import of described cleaned coal bucket elevator is sealably coupled on the outlet in cleaned coal discharge road by the tubulose chute, described wooden slag overfall inserts the circulation bucket with pipeline, described water circulating pump import is connected with circulation bucket underflow opening by pipeline, described water circulating pump outlet is connected with top water device by pipeline, and described water replanishing device inserts the circulation bucket.
6. a kind of lump coal coal jigging as claimed in claim 5 system is characterized in that described wooden slag overfall inserts light product bucket elevator by chute, opens an overfall in light product bucket elevator underwater, and inserts the circulation bucket with pipeline.
7. a kind of lump coal coal jigging as claimed in claim 5 system is characterized in that backwater inserts the circulation bucket with cleaned coal sieve equivalent substitution cleaned coal bucket elevator.
8. lump coal coal jigging method, comprise existing common multistage coal jigging method, it is characterized in that: once can sub-elect multiple products such as spoil, middle coal, cleaned coal and wooden slag when being selected in lump coal with this method, the supplementing water consumption is very little in the assorting room, and this method comprises the steps:
1. be ready to the lump coal jigging machine, and complete bed, fill with water;
2. start-up system is adjusted parameter, enters pre-production status;
3. add raw coal, normal boot-strap;
4. discharge spoil from the spoil section, coal during therefrom the coal section is discharged is discharged cleaned coal from cleaned coal discharge road, isolates floating thing from the water surface;
5. the suitable water of adding disappearance;
6. ordinary production is carried out sorting by the density difference.
9. a kind of lump coal coal jigging method as claimed in claim 8, it is characterized in that: the recirculated water consumption is very little in washing process, or without recirculated water.
10. a kind of as claimed in claim 8 or 9 lump coal coal jigging method is characterized in that: be suitable under the material size and be limited to 6 millimeters to 50 millimeters, be limited to 300 millimeters on the material size.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007103010058A CN101185912A (en) | 2007-12-12 | 2007-12-12 | Torbanite washbox, coal separation system and coal separation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007103010058A CN101185912A (en) | 2007-12-12 | 2007-12-12 | Torbanite washbox, coal separation system and coal separation method thereof |
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| CNA2007103010058A Pending CN101185912A (en) | 2007-12-12 | 2007-12-12 | Torbanite washbox, coal separation system and coal separation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441477A (en) * | 2010-10-13 | 2012-05-09 | 金易通科技（北京）有限公司 | Drop jigging sorting method and drop jigging machine |
| CN105597908A (en) * | 2016-01-26 | 2016-05-25 | 张路征 | Combined movable sieve jig for three products |
| CN106694203A (en) * | 2015-07-31 | 2017-05-24 | 金易通科技(北京)股份有限公司 | Oil shale jigging method and jigging machine |
| CN108273655A (en) * | 2018-01-12 | 2018-07-13 | 华北科技学院 | A kind of coal jigging system and method |
| CN108654824A (en) * | 2018-07-27 | 2018-10-16 | 河北金润矿山设备集团有限公司 | The lower double-piston open and close type jigging machine of sieve |
| CN109046755A (en) * | 2018-09-10 | 2018-12-21 | 四川省红利达尾矿综合利用有限公司 | A kind of production and processing system and its technique abandoning the processing of cash full dose and utilizing |
| CN109174428A (en) * | 2018-09-04 | 2019-01-11 | 金易通（天津）智能装备有限公司 | The jigging machine of jigging method and realization this method to the secondary regulation of fluctuating flow |
| CN109772571A (en) * | 2019-01-24 | 2019-05-21 | 中国矿业大学 | A kind of lump coal enters the coal jigging technique washed |
| CN110328043A (en) * | 2019-08-22 | 2019-10-15 | 六安永贞匠道机电科技有限公司 | The multistage water-saving sawtooth wave jigging machine of troilite |
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2007
- 2007-12-12 CN CNA2007103010058A patent/CN101185912A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441477A (en) * | 2010-10-13 | 2012-05-09 | 金易通科技（北京）有限公司 | Drop jigging sorting method and drop jigging machine |
| CN102441477B (en) * | 2010-10-13 | 2013-07-24 | 金易通科技(北京)股份有限公司 | Drop jigging sorting method and drop jigging machine |
| CN106694203A (en) * | 2015-07-31 | 2017-05-24 | 金易通科技(北京)股份有限公司 | Oil shale jigging method and jigging machine |
| CN105597908A (en) * | 2016-01-26 | 2016-05-25 | 张路征 | Combined movable sieve jig for three products |
| CN108273655A (en) * | 2018-01-12 | 2018-07-13 | 华北科技学院 | A kind of coal jigging system and method |
| CN108654824A (en) * | 2018-07-27 | 2018-10-16 | 河北金润矿山设备集团有限公司 | The lower double-piston open and close type jigging machine of sieve |
| CN109174428A (en) * | 2018-09-04 | 2019-01-11 | 金易通（天津）智能装备有限公司 | The jigging machine of jigging method and realization this method to the secondary regulation of fluctuating flow |
| CN109046755A (en) * | 2018-09-10 | 2018-12-21 | 四川省红利达尾矿综合利用有限公司 | A kind of production and processing system and its technique abandoning the processing of cash full dose and utilizing |
| CN109046755B (en) * | 2018-09-10 | 2023-12-26 | 四川绿矿环保科技有限公司 | Production and processing system and process for full-scale waste rock disposal and utilization |
| CN109772571A (en) * | 2019-01-24 | 2019-05-21 | 中国矿业大学 | A kind of lump coal enters the coal jigging technique washed |
| CN110328043A (en) * | 2019-08-22 | 2019-10-15 | 六安永贞匠道机电科技有限公司 | The multistage water-saving sawtooth wave jigging machine of troilite |
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Application publication date: 20080528 |