CN103611620A - Coal washing medium powder and coal washing process - Google Patents
Coal washing medium powder and coal washing process Download PDFInfo
- Publication number
- CN103611620A CN103611620A CN201310583796.3A CN201310583796A CN103611620A CN 103611620 A CN103611620 A CN 103611620A CN 201310583796 A CN201310583796 A CN 201310583796A CN 103611620 A CN103611620 A CN 103611620A
- Authority
- CN
- China
- Prior art keywords
- coal
- raw
- housing
- medium
- washing medium
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 596
- 238000005406 washing Methods 0.000 title claims abstract description 175
- 239000000843 powder Substances 0.000 title claims abstract description 100
- 239000000463 material Substances 0.000 claims abstract description 61
- 238000003860 storage Methods 0.000 claims abstract description 56
- 239000000725 suspension Substances 0.000 claims abstract description 46
- 239000000696 magnetic material Substances 0.000 claims abstract description 28
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 239000011593 sulfur Substances 0.000 claims abstract description 8
- 235000019580 granularity Nutrition 0.000 claims description 80
- 238000000034 method Methods 0.000 claims description 49
- 239000008187 granular material Substances 0.000 claims description 47
- 238000006062 fragmentation reaction Methods 0.000 claims description 31
- 238000013467 fragmentation Methods 0.000 claims description 29
- 230000001404 mediated effect Effects 0.000 claims description 24
- 238000004140 cleaning Methods 0.000 claims description 21
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 18
- 239000003818 cinder Substances 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 16
- 238000007873 sieving Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 13
- 239000012141 concentrate Substances 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 33
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 26
- 238000004380 ashing Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention provides a coal washing medium powder and a coal washing process. The coal washing medium powder contains magnetic material larger than 97.8% in content, particles 91.3% in content and sulfur less than 0.1% in content. The coal washing process includes the steps of 1), feeding the coal washing medium powder into a medium storage tank for standby; 2), feeding raw coal into a circulating coal crushing device prior to being fed into a classifier; 3), allowing the classifier to pick out crushed raw coal in the step 2); 4), feeding the raw coal materials stored in the medium storage tank into a three-product dense medium cyclone; 5), using a medium removing unit to have coal washing medium obtained in the step 4) recycled and reconfiguring dense medium suspension liquid; 6), using a dewatering unit to have watery coal subjected to medium removing in the step 5) dewatered to obtain clean coal, middlings and gauge products. By application of the coal washing process, the clean coal obtained by raw coal washing contains ash content stably around 0.5%, continuous coal washing can be achieved, and the coal washing process is suitable for being widely promoted and applied in the coal industry.
Description
Technical field
The present invention relates to a kind of coal washing medium powder, specifically a kind of coal washing medium powder and coal cleaning process.
Background technology
Coal washing is one important procedure in coal deep processing, and the content of ashes that raw coal carries after washing significantly reduces, and the pollutant and the ash content that after burning, produce significantly reduce, and realize the clean utilization of coal.The coal washing that coal industry is used is at present that magnetic material content is more than 95% with medium powder grade highest standard, in coal washing medium powder, the granule content of-325 order granularities is greater than 90%, the sulfur content of coal washing medium powder is less than 0.1%, the coal washing medium powder that employing meets this standard carries out can making the content of ashes in cleaned coal be down to 2% left and right after washing to raw coal, in actual production process, meet content of ashes in the cleaned coal that the overwhelming majority's batch of above-mentioned standard coal washing medium powder carries out obtaining after washing to raw coal and be all stabilized in 2% left and right (error is within 0.1%), even if significantly promoting magnetic material content in coal washing medium powder and the fineness of medium powder particle can not make a significant impact content of ashes in the cleaned coal finally obtaining yet, therefore those skilled in the art generally believe that coal washing medium powder meets after above-mentioned standard, even if the fineness of the magnetic material content in medium powder and medium powder particle changes within meeting the scope of above-mentioned standard, can not affect the content of ashes in the cleaned coal finally obtaining yet.And in actual production process, it is found that under rare occasion, ash content when the coal washing medium powder that employing meets above-mentioned standard carries out washing to raw coal washes out rate and can significantly promote, in the cleaned coal obtaining after washing, content of ashes can be low to moderate 0.5%, but the interval meeting of size distribution of reclaiming rear magnetic material content and particle due to medium powder produces certain variation, ash content washes out situation that rate significantly promotes mostly cannot repetition, so which parameter those skilled in the art it be unclear that actually in medium powder and change and can cause ash content to wash out rate significantly promoting.In addition, due to the disintegrating machine using in current coal cleaning process, between the various devices such as screening machine, lack associated, raw coal is through fragmentation, after the operations such as screening, all need man-handling of materials to subsequent processing, in whole coal washing process, raw coal need to shift repeatedly between each equipment, cause existing coal washing Job Operations comparatively loaded down with trivial details, cannot form continuous production, and coal washing operation need to consume a large amount of labor costs and transporting equipment cost, therefore a large amount of coal enterprise is for cost-saving, save the consideration of the aspects such as raw coal processing time, omitted coal washing step, directly raw coal being supplied with to downstream industry uses.According to statistics, the current raw coal of China enters to wash rate and is still in reduced levels ，Yu developed country and has larger gap.When coal-fired enterprise is used raw coal without washing as fuel, the pollutant of discharge is compared significantly and is increased with burning cleaned coal, and efficiency of combustion is very low, and the content of ashes in raw coal is higher, and after burning, the difficulty of cleaning residue is larger; In addition, because the coal-producing area of China is mostly away from the more developed area of coal consumption, the freight volume of coal is large, and haul distance is long, and average coal haul distance is about 600 kilometers, has wasted a large amount of transport power during without the raw coal transportation of washing.
Summary of the invention
The object of this invention is to provide a kind of coal washing medium powder and coal cleaning process, in the cleaned coal that it can make to obtain after raw coal washing, content of ashes is stabilized in 0.5% left and right, and coal washing continuously, between coal each equipment in coal washing operation, do not need man-handling of materials, labor cost and transporting equipment cost while significantly having reduced the coal washing operation of coal production enterprise, shortened the raw coal processing time, also help coal production optimization of enterprises product structure, improve the market competitiveness, increase the profit on sales of product, be adapted at applying on a large scale in coal industry, the raw coal that improves coal industry integral body enters to wash rate.
The present invention for achieving the above object, be achieved through the following technical solutions: a kind of coal washing medium powder and coal cleaning process, in coal washing medium powder, magnetic material content is greater than 97.8%, in coal washing medium powder, the granule content of-325 order granularities is 91.3%, the granule content of-600 order granularities is 48.5%-52.5%, and the sulfur content of coal washing medium powder is less than 0.1%;
Use the technique of above-mentioned coal washing medium powder coal washing to comprise the following steps:
1. above-mentioned coal washing medium powder is sent into medium storage tank, to be mixedly configured into heavy-media suspension standby with water in medium storage tank for coal washing medium powder;
2. raw coal is sent into the raw coal crusher in crushing in circulation broken coal equipment, the raw coal after fragmentation enters sorter;
3. sorter will be selected through the step raw coal that 2. granularity is less than 85mm after fragmentation, as raw coal material, send in raw material storage tank and concentrate and store, and the former coal cinder that granularity after fragmentation is more than or equal to 85mm is sent back in raw coal disintegrating machine again broken, until granularity is less than 85mm;
4. the raw coal material storing in raw material storage tank is sent in three products heavy medium cyclone, the heavy-media suspension simultaneously 1. step being configured in medium storage tank is sent in three products heavy medium cyclone, three products heavy medium cyclone sub-elect be mixed with coal washing medium cleaned coal, be mixed with the middle coal of coal washing medium and the spoil that is mixed with coal washing medium;
5. use the cleaned coal that is mixed with heavy-media suspension that 4. de-mediated equipment obtain step, the coal washing medium being mixed with in the middle coal of heavy-media suspension and the spoil of heavy-media suspension to reclaim, obtain the moisture cleaned coal after de-mediated, moisture middle coal and moisture spoil, the coal washing medium that de-mediated equipment reclaims is sent medium storage tank back to by medium recovery pump, reconfigures heavy-media suspension;
6. use dehydration equipment to step 5. in moisture cleaned coal, moisture middle coal and moisture spoil after de-mediated carry out processed, obtain respectively cleaned coal, middle coal and spoil finished product;
The step 2. middle circulation broken coal equipment using comprises sorter and raw coal disintegrating machine, sorter has a hollow discoid housing, housing comprises two circular side wall that are parallel to each other, two circular side wall borders connect by an annular sidewall, two circular side wall of housing all relative horizontal plane tilt 30 °-60 °, enclosure interior shaft core position is installed axis, rotating disk is installed on axis, the rotating disk middle shaft rotation of can having mercy on, rotating disk outward flange arranges shading ring, shading ring is separated into the discoid cavity at middle part and the toroidal cavity of periphery by housing, in discoid cavity, drive motors is set, drive motors is fixedly mounted in inner walls, on the output shaft of drive motors, driven wheel is installed, ring gear is installed on rotating disk, driven wheel and ring gear engagement, shading ring outer wall is installed at least 2 material toggling frameworks, each material toggling framework evenly arranges along shading ring periphery wall, on material toggling framework, cover sieving net, the aperture of sieving net is 85mm, in the circular side wall of housing upside, offer raw coal inlet, the circular side wall that raw coal inlet is positioned at housing upside bottom, in the circular side wall of housing downside, offer rough coal outlet, rough coal outlet is positioned at circular side wall the top of housing downside, raw coal inlet is communicated with the discharging opening of raw coal disintegrating machine, rough coal outlet is communicated with the charging aperture of raw coal disintegrating machine by inclined ramp, duff discharge gate is set on housing annular sidewall, duff discharge gate is positioned at housing annular sidewall bottom, duff discharge gate place arranges discharge gate.
The raw coal material that the granularity that 2. circulation broken coal equipment obtain step is less than 85mm is poured on vibration drop guide in batches, vibration drop guide is evenly poured over raw coal material on the belt conveyor of belt conveyor, by belt conveyor, send in raw material storage tank and concentrate and store, vibration drop guide comprises a base plate, base plate is inclined relative to horizontal 5 °-15 °, Ji Liangge side, compare Gao one end, base plate position all arranges baffle plate, baffle plate is positioned at base plate upside, vibrating motor is installed in base plate bottom surface, and baffle plate is connected with base by support spring seat.The step 4. interior raw coal material storing of Raw storage tank is sent in three products heavy medium cyclone by conveying worm, and the heavy-media suspension of medium storage tank stores is sent in three products heavy medium cyclone by medium pump.Described discharge gate has flashboard, and the housing at flashboard one end and duff discharge gate edge is hinged, and flashboard seat is installed on housing, and flashboard is connected with flashboard seat by hydraulic cylinder.Two circular side wall of housing all relative horizontal plane tilt 45 °.
Coal washing medium powder and a coal cleaning process, 1. choosing magnetic material content is 98.0%, in coal washing medium powder, the granule content of-325 order granularities is that the granule content of 91.1% ,-600 order granularities is 50.5%, the coal washing medium powder that the sulfur content of coal washing medium powder is less than 0.1%;
Above-mentioned coal washing medium powder is sent into medium storage tank, and to be mixedly configured into heavy-media suspension standby with water in medium storage tank for coal washing medium powder;
2. raw coal is sent into the raw coal crusher in crushing in circulation broken coal equipment, the raw coal after fragmentation enters sorter;
3. sorter will be selected through the step raw coal that 2. granularity is less than 85mm after fragmentation, as raw coal material, send in raw material storage tank and concentrate and store, and the former coal cinder that granularity after fragmentation is more than or equal to 85mm is sent back in raw coal disintegrating machine again broken, until granularity is less than 85mm;
4. the raw coal material storing in raw material storage tank is sent in three products heavy medium cyclone, the heavy-media suspension simultaneously 1. step being configured in medium storage tank is sent in three products heavy medium cyclone, three products heavy medium cyclone sub-elect be mixed with coal washing medium cleaned coal, be mixed with the middle coal of coal washing medium and the spoil that is mixed with coal washing medium;
5. use the cleaned coal that is mixed with heavy-media suspension that 4. de-mediated equipment obtain step, the coal washing medium being mixed with in the middle coal of heavy-media suspension and the spoil of heavy-media suspension to reclaim, obtain the moisture cleaned coal after de-mediated, moisture middle coal and moisture spoil, the coal washing medium that de-mediated equipment reclaims is sent medium storage tank back to by medium recovery pump, reconfigures heavy-media suspension;
6. use dehydration equipment to step 5. in moisture cleaned coal, moisture middle coal and moisture spoil after de-mediated carry out processed, obtain respectively cleaned coal, middle coal and spoil finished product;
The step 2. middle circulation broken coal equipment using comprises sorter and raw coal disintegrating machine, sorter has a hollow discoid housing, housing comprises two circular side wall that are parallel to each other, two circular side wall borders connect by an annular sidewall, two circular side wall of housing all relative horizontal plane tilt 45 °, enclosure interior shaft core position is installed axis, rotating disk is installed on axis, the rotating disk middle shaft rotation of can having mercy on, rotating disk outward flange arranges shading ring, shading ring is separated into the discoid cavity at middle part and the toroidal cavity of periphery by housing, in discoid cavity, drive motors is set, drive motors is fixedly mounted in inner walls, on the output shaft of drive motors, driven wheel is installed, ring gear is installed on rotating disk, driven wheel and ring gear engagement, shading ring outer wall is installed at least 2 material toggling frameworks, each material toggling framework evenly arranges along shading ring periphery wall, on material toggling framework, cover sieving net, the aperture of sieving net is 85mm, in the circular side wall of housing upside, offer raw coal inlet, the circular side wall that raw coal inlet is positioned at housing upside bottom, in the circular side wall of housing downside, offer rough coal outlet, rough coal outlet is positioned at circular side wall the top of housing downside, raw coal inlet is communicated with the discharging opening of raw coal disintegrating machine, rough coal outlet is communicated with the charging aperture of raw coal disintegrating machine by inclined ramp, duff discharge gate is set on housing annular sidewall, duff discharge gate is positioned at housing annular sidewall bottom, duff discharge gate place arranges discharge gate.
A raw coal continuous crushing method, comprises the following steps:
1. raw coal is inserted in raw coal disintegrating machine broken;
2. the raw coal after fragmentation that raw coal disintegrating machine discharging opening is discharged falls into the raw coal inlet of open circles plate-like housing, enters the toroidal cavity in housing, accumulates in the bottom of toroidal cavity;
3. the rotating disk in raw coal disintegrating machine rotates under the driving of drive motors, by shading ring, drive material toggling framework loopy moving in toroidal cavity, the former coal cinder that sieving net on material toggling framework is more than or equal to 85mm by granularity in broken coal is promoted to toroidal cavity top, when arriving toroidal cavity top, the former coal cinder that granularity is more than or equal to 85mm discharges from rough coal outlet, open at discharge gate interval on toroidal cavity bottom shell sidewall, and the raw coal material that the granularity storing in toroidal cavity is less than to 85mm is discharged;
4. the former coal cinder that the granularity that rough coal outlet is discharged is more than or equal to 85mm slips into the charging aperture of raw coal disintegrating machine along inclined ramp, again carry out fragmentation.
The invention has the advantages that: compare ash content with existing coal washing medium powder and wash out rate and be significantly improved, in the cleaned coal that makes to obtain after raw coal washing, content of ashes is stabilized in 0.5% left and right, and coal washing continuously, between coal each equipment in coal washing operation, do not need man-handling of materials, labor cost and transporting equipment cost while significantly having reduced the coal washing operation of coal production enterprise, shortened the raw coal processing time, compare the continuous coal cleaning process of dense media of the present invention is easier to be accepted by coal production enterprise with existing coal cleaning process, be conducive to coal production optimization of enterprises product structure, improve the market competitiveness of product, increase the profit on sales of product, be adapted at applying on a large scale in coal industry, the raw coal that improves coal industry integral body enters to wash rate, reduce the pollution level of coal-fired enterprise to environment, improve efficiency of fire coal, reduce transport power waste etc.
Accompanying drawing explanation
Fig. 1 is the device structure schematic diagram using in coal cleaning process of the present invention;
Fig. 2 is in the present invention, circulate broken coal equipment and the structural representation that vibrates drop guide;
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2;
Fig. 4 is the plan structure schematic diagram of Fig. 2;
Fig. 5 is the process flow diagram of coal cleaning process of the present invention.
The specific embodiment
In coal washing medium powder of the present invention, magnetic material content is greater than 97.8%, and in coal washing medium powder, the granule content of-325 order granularities is 91.0%-91.2%, and the granule content of-600 order granularities is 48.5%-52.5%, and the sulfur content of coal washing medium powder is less than 0.1%;
Use the technique of above-mentioned coal washing medium powder coal washing to comprise the following steps:
1. above-mentioned coal washing medium powder is sent into medium storage tank 28, to be mixedly configured into heavy-media suspension standby with water in medium storage tank 28 for coal washing medium powder, and the initial density of heavy-media suspension is 1.3g/cm
3-1.6 g/cm
3;
2. raw coal is sent into raw coal disintegrating machine 17 fragmentations in circulation broken coal equipment 1, the raw coal after fragmentation enters sorter;
3. sorter will be selected through the step raw coal that 2. granularity is less than 85mm after fragmentation, as raw coal material, send into the interior concentrated storage of raw material storage tank 2, and the former coal cinder that granularity after fragmentation is more than or equal to 85mm is sent back in raw coal disintegrating machine 17 again broken, until granularity is less than 85mm;
4. the raw coal material of raw material storage tank 2 interior storages is sent in three products heavy medium cyclone 3, simultaneously by step 1. the heavy-media suspension of medium storage tank 28 interior configurations send in three products heavy medium cyclone 3, three products heavy medium cyclone 3 sub-elects the cleaned coal that is mixed with coal washing medium, be mixed with the middle coal of coal washing medium and the spoil that is mixed with coal washing medium, because each place of production ature of coal is different, if therefore normally sorting of heavy-media suspension initial density, technical staff can regulate the heavy-media suspension density in medium storage tank 28 according to the sorting situation of three products heavy medium cyclone 3 when three products heavy medium cyclone 3 work, heavy-media suspension Auto-regulating System of Density of Heavy Medium scope is conventionally at 1.1 g/cm
3-1.9 g/cm
3in scope, until three products heavy medium cyclone 3 can sub-elect cleaned coal, middle coal and spoil smoothly, obtain suitable media density p,
5. use the cleaned coal that is mixed with heavy-media suspension that 4. 34 pairs of steps of de-mediated equipment obtain, the coal washing medium being mixed with in the middle coal of heavy-media suspension and the spoil of heavy-media suspension to reclaim, obtain the moisture cleaned coal after de-mediated, moisture middle coal and moisture spoil, the coal washing medium that de-mediated equipment 34 reclaims is sent medium storage tank 28 back to by medium recovery pump 36, reconfigure heavy-media suspension, when heavy-media suspension reconfigures, according to suitable media density p, configure;
6. use 35 pairs of steps of dehydration equipment 5. in moisture cleaned coal, moisture middle coal and moisture spoil after de-mediated carry out processed, obtain respectively cleaned coal, middle coal and spoil finished product;
The step 2. middle circulation broken coal equipment 1 using comprises sorter and raw coal disintegrating machine 17, sorter has a hollow discoid housing 4, housing 4 comprises two circular side wall that are parallel to each other, two circular side wall borders connect by an annular sidewall, two circular side wall of housing 4 all relative horizontal plane tilt 30 °-60 °, axis 5 is installed in housing 4 internal axis positions, rotating disk 6 is installed on axis 5, rotating disk 6 axis 5 rotation of can having mercy on, rotating disk 6 outward flanges arrange shading ring 7, shading ring 7 is separated into the discoid cavity 8 at middle part and the toroidal cavity 9 of periphery by housing 4, the interior drive motors 10 that arranges of discoid cavity 8, drive motors 10 is fixedly mounted on housing 4 inwalls, driven wheel 11 is installed on the output shaft of drive motors 10, ring gear 12 is installed on rotating disk 6, driven wheel 11 and ring gear 12 engagements, shading ring 7 outer walls are installed at least 2 material toggling frameworks 13, each material toggling framework 13 evenly arranges along shading ring 7 periphery walls, on material toggling framework 13, cover sieving net 14, the aperture of sieving net 14 is 85mm, in the circular side wall of housing 4 upsides, offer raw coal inlet 15, the circular side wall that raw coal inlet 15 is positioned at housing 4 upsides bottom, in the circular side wall of housing 4 downsides, offer rough coal outlet 16, rough coal outlet 16 is positioned at circular side wall the top of housing 4 downsides, raw coal inlet 15 is communicated with the discharging opening of raw coal disintegrating machine 17, rough coal outlet 16 is communicated with the charging aperture of raw coal disintegrating machine 17 by inclined ramp 18, on housing 4 annular sidewalls, duff discharge gate 19 is set, duff discharge gate 19 is positioned at housing 4 annular sidewalls bottom, duff discharge gate 19 places arrange discharge gate.
Applicant has carried out years of researches to coal washing medium powder, discovery is greater than 97.8% when the coal washing medium powder in coal washing medium powder meets magnetic material content simultaneously, in coal washing medium powder, the granule content of-325 order granularities is 91.0%-91.2%, when the granule content of-600 order granularities is the condition of 48.5%-52.5%, can make ash content wash out rate can be significantly improved, in the cleaned coal that makes to obtain after raw coal washing, content of ashes is stabilized in 0.5% left and right (error is within 0.2%), considerably beyond those skilled in the art's known effect before this, be conducive to strengthen coal washing effect, reduce the pollutant and the ash content that after coal burning, produce, reduce the pollution that coal burning produces environment.Its experimental data is as follows:
1, coal washing medium powder sample A: magnetic material content is 97.9%, the granule content of-325 order granularities is 91.0% in coal washing medium powder, the granule content of-600 order granularities is 48.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 814.3kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.51%, 0.68%, 0.41%, 0.50%, 0.49%, 0.58%, 0.68%, 0.57%, 0.49%, 0.51%;
2, coal washing medium powder sample B: magnetic material content is 98.1%, the granule content of-325 order granularities is 91.0% in coal washing medium powder, the granule content of-600 order granularities is 52.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 801.9kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.32%, 0.49%, 0.57%, 0.70%, 0.41%, 0.62%, 0.51%, 0.50%, 0.31%, 0.52%;
3, coal washing medium powder sample C: magnetic material content is 98.0%, the granule content of-325 order granularities is 91.2% in coal washing medium powder, the granule content of-600 order granularities is 52.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 836.4kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.30%, 0.48%, 0.50%, 0.61%, 0.38%, 0.40%, 0.53%, 0.69%, 0.52%, 0.33%;
4, coal washing medium powder sample D: magnetic material content is 97.9%, the granule content of-325 order granularities is 91.2% in coal washing medium powder, the granule content of-600 order granularities is 48.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 811.2kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.68%, 0.39%, 0.57%, 0.41%, 0.55%, 0.50%, 0.31%, 0.30%, 0.49%, 0.51%;
5, coal washing medium powder sample E: magnetic material content is 98.6%, the granule content of-325 order granularities is 91.0% in coal washing medium powder, the granule content of-600 order granularities is 52.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 830.2kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.52%, 0.41%, 0.40%, 0.53%, 0.41%, 0.62%, 0.66%, 0.70%, 0.54%, 0.62%;
6, coal washing medium powder sample F: magnetic material content is 97.9%, the granule content of-325 order granularities is 91.1% in coal washing medium powder, the granule content of-600 order granularities is 50.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 808.9kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.30%, 0.68%, 0.31%, 0.42%, 0.42%, 0.34%, 0.48%, 0.51%, 0.60%, 0.48%;
7, coal washing medium powder sample G: magnetic material content is 98.6%, the granule content of-325 order granularities is 91.1% in coal washing medium powder, the granule content of-600 order granularities is 49.3%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 812.8kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 0.68%, 0.48%, 0.50%, 0.43%, 0.44%, 0.61%, 0.55%, 0.70%, 0.49%, 0.38%;
8, coal washing medium powder sample H: magnetic material content is 97.7%, the granule content of-325 order granularities is 91.2% in coal washing medium powder, the granule content of-600 order granularities is 52.5%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 813.7kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 2.08%, 1.95%, 2.00%, 2.09%, 2.01%, 2.01%, 1.90%, 2.09%, 1.94%, 1.98%;
9, coal washing medium powder sample I: magnetic material content is 98.5%, the granule content of-325 order granularities is 90.9% in coal washing medium powder, the granule content of-600 order granularities is 52.4%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 837.0kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 2.01%, 2.05%, 1.90%, 1.99%, 2.03%, 2.00%, 1.93%, 1.99%, 1.95%, 2.08%;
10, coal washing medium powder sample J: magnetic material content is 98.3%, the granule content of-325 order granularities is 90.1% in coal washing medium powder, the granule content of-600 order granularities is 51.9%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 820.3kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 2.03%, 1.95%, 2.10%, 1.93%, 2.01%, 2.02%, 1.97%, 2.09%, 2.02%, 2.04%;
11, coal washing medium powder sample K: magnetic material content is 98.0%, the granule content of-325 order granularities is 91.3% in coal washing medium powder, the granule content of-600 order granularities is 52.0%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 833.1kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 1.95%, 1.93%, 1.90%, 2.03%, 2.02%, 2.00%, 2.09%, 2.01%, 2.01%, 2.02%;
12, coal washing medium powder sample L: magnetic material content is 97.9%, the granule content of-325 order granularities is 95.1% in coal washing medium powder, the granule content of-600 order granularities is 51.7%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 823.3kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 1.90%, 1.99%, 2.01%, 2.09%, 2.10%, 2.01%, 1.99%, 1.98%, 1.95%, 1.94%;
13, coal washing medium powder sample M: magnetic material content is 98.5%, the granule content of-325 order granularities is 91.1% in coal washing medium powder, the granule content of-600 order granularities is 48.4%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 853.7kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 2.03%, 1.93%, 1.91%, 1.94%, 2.00%, 2.07%, 1.91%, 2.05%, 2.04%, 1.91%;
14, coal washing medium powder sample N: magnetic material content is 98.2%, the granule content of-325 order granularities is 91.2% in coal washing medium powder, the granule content of-600 order granularities is 21.9%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 840.1kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 2.09%, 2.04%, 1.97%, 2.04%, 2.10%, 2.01%, 1.95%, 1.98%, 1.94%, 1.96%;
15, coal washing medium powder sample O: magnetic material content is 97.9%, the granule content of-325 order granularities is 91.0% in coal washing medium powder, the granule content of-600 order granularities is 52.6%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 819.4kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 1.95%, 2.01%, 1.90%, 1.93%, 2.00%, 2.04%, 1.95%, 1.97%, 1.93%, 1.91%;
16, coal washing medium powder sample O: magnetic material content is 98.1%, the granule content of-325 order granularities is 91.1% in coal washing medium powder, the granule content of-600 order granularities is 69.8%, adopt this sample to carry out washing to 1000kg raw coal, obtain cleaned coal 794.3kg, from cleaned coal heap, diverse location is got 10 parts of cleaned coal samples, by slow-ashing method, cleaned coal sample is detected, record content of ashes in 10 parts of cleaned coal samples and be respectively 1.91%, 1.94%, 1.97%, 2.10%, 2.03%, 2.08%, 2.04%, 1.93%, 1.94%, 1.99%;
Coal cleaning process of the present invention is broken by raw coal circulation by circulation broken coal equipment 1, by the coal in raw coal, spoil and other foreign material are all crushed to three products heavy medium cyclone 3 can be below the particle diameter of sorting, by three products heavy medium cyclone 3, carry out sorting again, raw coal circulation shattering process is all completed voluntarily by circulation broken coal equipment 1, it is again broken that the nonconforming coal cinder of particle size after cracking is sent raw coal disintegrating machine 17 automatically back to, whole process does not need man-handling of materials, raw coal is from output to dividing the cleaned coal of hanking, step between middle coal and spoil finished product is all carried out continuously, can realize and enter continuously coal, produce coal continuously, labor cost and transporting equipment cost while significantly having reduced the coal washing operation of coal production enterprise, shortened the raw coal processing time, compare the continuous coal cleaning process of dense media of the present invention is easier to be accepted by coal production enterprise with existing coal cleaning process, the raw coal that is conducive to improve coal industry integral body enters to wash rate, raw coal at source after sorting targetedly Xiang Yong coal unit sell the coal product of different brackets, be conducive to coal production optimization of enterprises product structure, improve the market competitiveness of product, increase the profit on sales of product, be adapted at applying on a large scale in coal industry, reduce the pollution level of coal-fired enterprise to environment, improve efficiency of fire coal, reduce transport power waste.
Circulation broken coal equipment 1 of the present invention provides a kind of raw coal continuous crushing method: the method comprises the following steps:
1. raw coal is inserted to the interior fragmentation of raw coal disintegrating machine 17;
2. the raw coal after fragmentation that raw coal disintegrating machine 17 discharging openings are discharged falls into the raw coal inlet 15 of open circles plate-like housing 4, enters the toroidal cavity 9 in housing 4, accumulates in the bottom of toroidal cavity 9;
3. the rotating disk 6 in raw coal disintegrating machine 17 rotates under the driving of drive motors 10, by shading ring 7, drive material toggling framework 13 at the interior loopy moving of toroidal cavity 9, the former coal cinder that sieving net 14 on material toggling framework 13 is more than or equal to 85mm by granularity in broken coal is promoted to toroidal cavity 9 tops, when arriving toroidal cavity 9 top, the former coal cinder that granularity is more than or equal to 85mm discharges from rough coal outlet 16, open at discharge gate interval on toroidal cavity 9 bottom shell 4 sidewalls, and the raw coal material that the granularity of toroidal cavity 9 interior storages is less than to 85mm is discharged;
4. the former coal cinder that the granularity that rough coal outlet 16 is discharged is more than or equal to 85mm slips into the charging aperture of raw coal disintegrating machine 17 along inclined ramp 18, again carry out fragmentation.
After circulation broken coal equipment 1 of the present invention is discharged the raw coal material after fragmentation, preferably adopt belt conveyor 20 that raw coal material is sent into raw material storage tank 2, belt conveyor 20 has and can transport continuously, the advantage of improving material easily, but because open at described discharge gate interval, the raw coal material of once discharging is more, directly can cause when toppling on belt conveyor 20 load of belt conveyor moment to increase, cause belt drives motor load to occur significantly changing, easily make belt drives motor impaired, cause significantly shorten the service life of belt conveyor 20.The present invention adopts following method to address this problem: the raw coal material that the granularity that 2. circulation broken coal equipment 1 obtain step is less than 85mm is poured on vibration drop guide 21 in batches, vibration drop guide 21 is evenly poured over raw coal material on the belt conveyor of belt conveyor 20, by belt conveyor 20, send into the interior concentrated storage of raw material storage tank 2, vibration drop guide 21 comprises a base plate 22, base plate 22 is inclined relative to horizontal 5 °-15 °, base plate 22 Ji Liangge sides, compare Gao one end, position all arrange baffle plate 23, baffle plate 23 is positioned at base plate 22 upsides, vibrating motor 24 is installed in base plate 22 bottom surfaces, baffle plate 23 is connected with base 26 by support spring seat 25.After raw coal material is poured on the base plate 22 that vibrates drop guide 21, along with vibrating motor 24 drives base plate 22 vibrations, raw coal material is the higher one lower side to position of breakking away from base plate 22 positions gradually, finally from base plate 22 compare Di one end, position, drops down onto the belt conveyor of belt conveyor 20 successively.This method can make the belt drives motor of belt conveyor 20 keep stable load, extends the service life of belt conveyor 20.
Raw coal material in the present invention and heavy-media suspension can be carried by multiple existing conveying equipment, wherein preferred equipment is: the step 3. raw coal material of Raw storage tank 2 interior storages is sent in three products heavy medium cyclone 3 by conveying worm 27, and the heavy-media suspension that medium storage tank 28 stores is sent in three products heavy medium cyclone 3 by medium pump 29.
Discharge gate of the present invention interval opens and closes, for realizing this function, preferred structure is: described discharge gate has flashboard 30, and the housing 4 at flashboard 30 one end and duff discharge gate 19 edges is hinged, flashboard seat 31 is installed on housing 4, and flashboard 30 is connected with flashboard seat 31 by hydraulic cylinder 32.This structure have open angle large, open and close and control advantage easily.Discharge gate of the present invention, except preferred structure, also can adopt other various structures, and such as adopting rotating shaft to be arranged on the turning gate etc. at flashboard middle part, but these structure open angles are less, and open and close control comparatively loaded down with trivial details.
The angle of inclination of two circular side wall relative level faces of housing 4 of the present invention is preferably 45 °.Two circular side wall of housing 4 all relatively horizontal plane tilt 45 ° time, the discharging speed of the charging rate of raw coal inlet 15, rough coal outlet 16 and the discharge velocity of duff discharge gate 19 are the most balanced, two circular side wall of housing 4 are when all relatively the angle of inclination of horizontal plane is greater than 45 °, the discharge velocity of duff discharge gate 19 increases, but the discharging speed of the charging rate of raw coal inlet 15, rough coal outlet 16 can decline thereupon; Two circular side wall of housing 4 are when all relatively the angle of inclination of horizontal plane is less than 45 °, the discharging speed of the charging rate of raw coal inlet 15, rough coal outlet 16 increases, but the discharge velocity of duff discharge gate 19 can decline, when the angle of inclination of two circular side wall relative level faces of housing 4 exceeds the scope of 30 °-60 °, the present invention there will be charging or discharge not smooth, easily blocks.
Coal washing medium powder of the present invention and the further preferred version of coal cleaning process are as follows:
1. choosing magnetic material content is 98.0%, and in coal washing medium powder, the granule content of-325 order granularities is that the granule content of 91.1% ,-600 order granularities is 50.5%, the coal washing medium powder that the sulfur content of coal washing medium powder is less than 0.1%;
Above-mentioned coal washing medium powder is sent into medium storage tank 28, and to be mixedly configured into heavy-media suspension standby with water in medium storage tank 28 for coal washing medium powder;
2. raw coal is sent into raw coal disintegrating machine 17 fragmentations in circulation broken coal equipment 1, the raw coal after fragmentation enters sorter;
3. sorter will be selected through the step raw coal that 2. granularity is less than 85mm after fragmentation, as raw coal material, send into the interior concentrated storage of raw material storage tank 2, and the former coal cinder that granularity after fragmentation is more than or equal to 85mm is sent back in raw coal disintegrating machine 17 again broken, until granularity is less than 85mm;
4. the raw coal material of raw material storage tank 2 interior storages is sent in three products heavy medium cyclone 3, simultaneously by step 1. the heavy-media suspension of medium storage tank 28 interior configurations send in three products heavy medium cyclone 3, three products heavy medium cyclone 3 sub-elect be mixed with coal washing medium cleaned coal, be mixed with the middle coal of coal washing medium and the spoil that is mixed with coal washing medium;
5. use the cleaned coal that is mixed with heavy-media suspension that 4. 34 pairs of steps of de-mediated equipment obtain, the coal washing medium being mixed with in the middle coal of heavy-media suspension and the spoil of heavy-media suspension to reclaim, obtain the moisture cleaned coal after de-mediated, moisture middle coal and moisture spoil, the coal washing medium that de-mediated equipment 34 reclaims is sent medium storage tank 28 back to by medium recovery pump 36, reconfigures heavy-media suspension;
6. use 35 pairs of steps of dehydration equipment 5. in moisture cleaned coal, moisture middle coal and moisture spoil after de-mediated carry out processed, obtain respectively cleaned coal, middle coal and spoil finished product;
The step 2. middle circulation broken coal equipment 1 using comprises sorter and raw coal disintegrating machine 17, sorter has a hollow discoid housing 4, housing 4 comprises two circular side wall that are parallel to each other, two circular side wall borders connect by an annular sidewall, two circular side wall of housing 4 all relative horizontal plane tilt 45 °, axis 5 is installed in housing 4 internal axis positions, rotating disk 6 is installed on axis 5, rotating disk 6 axis 5 rotation of can having mercy on, rotating disk 6 outward flanges arrange shading ring 7, shading ring 7 is separated into the discoid cavity 8 at middle part and the toroidal cavity 9 of periphery by housing 4, the interior drive motors 10 that arranges of discoid cavity 8, drive motors 10 is fixedly mounted on housing 4 inwalls, driven wheel 11 is installed on the output shaft of drive motors 10, ring gear 12 is installed on rotating disk 6, driven wheel 11 and ring gear 12 engagements, shading ring 7 outer walls are installed at least 2 material toggling frameworks 13, each material toggling framework 13 evenly arranges along shading ring 7 periphery walls, on material toggling framework 13, cover sieving net 14, the aperture of sieving net 14 is 85mm, in the circular side wall of housing 4 upsides, offer raw coal inlet 15, the circular side wall that raw coal inlet 15 is positioned at housing 4 upsides bottom, in the circular side wall of housing 4 downsides, offer rough coal outlet 16, rough coal outlet 16 is positioned at circular side wall the top of housing 4 downsides, raw coal inlet 15 is communicated with the discharging opening of raw coal disintegrating machine 17, rough coal outlet 16 is communicated with the charging aperture of raw coal disintegrating machine 17 by inclined ramp 18, on housing 4 annular sidewalls, duff discharge gate 19 is set, duff discharge gate 19 is positioned at housing 4 annular sidewalls bottom, duff discharge gate 19 places arrange discharge gate.
In figure, 33 is equipment supporters.
Claims (7)
1. a coal washing medium powder and coal cleaning process, it is characterized in that: in coal washing medium powder, magnetic material content is greater than 97.8%, in coal washing medium powder, the granule content of-325 order granularities is 91.0%-91.2%, and the granule content of-600 order granularities is 48.5%-52.5%, and the sulfur content of coal washing medium powder is less than 0.1%;
Use the technique of above-mentioned coal washing medium powder coal washing to comprise the following steps:
1. above-mentioned coal washing medium powder is sent into medium storage tank (28), to be mixedly configured into heavy-media suspension standby with water in medium storage tank (28) for coal washing medium powder;
2. raw coal is sent into raw coal disintegrating machine (17) fragmentation in circulation broken coal equipment (1), the raw coal after fragmentation enters sorter;
3. sorter will be selected through the step raw coal that 2. granularity is less than 85mm after fragmentation, as raw coal material, send in raw material storage tank (2) and concentrate and store, and the former coal cinder that granularity after fragmentation is more than or equal to 85mm is sent back in raw coal disintegrating machine (17) again broken, until granularity is less than 85mm;
4. the raw coal material storing in raw material storage tank (2) is sent in three products heavy medium cyclone (3), simultaneously by step 1. in medium storage tank (28) heavy-media suspension of configuration send in three products heavy medium cyclone (3), three products heavy medium cyclone (3) sub-elect be mixed with coal washing medium cleaned coal, be mixed with the middle coal of coal washing medium and the spoil that is mixed with coal washing medium;
5. use the cleaned coal that is mixed with heavy-media suspension that de-mediated equipment (34) 4. obtains step, the coal washing medium being mixed with in the middle coal of heavy-media suspension and the spoil of heavy-media suspension to reclaim, obtain the moisture cleaned coal after de-mediated, moisture middle coal and moisture spoil, the coal washing medium that de-mediated equipment (34) reclaims is sent medium storage tank (28) back to by medium recovery pump (36), reconfigures heavy-media suspension;
6. use dehydration equipment (35) to step 5. in moisture cleaned coal, moisture middle coal and moisture spoil after de-mediated carry out processed, obtain respectively cleaned coal, middle coal and spoil finished product;
The step 2. middle circulation broken coal equipment (1) using comprises sorter and raw coal disintegrating machine (17), sorter has a hollow discoid housing (4), housing (4) comprises two circular side wall that are parallel to each other, two circular side wall borders connect by an annular sidewall, two circular side wall of housing (4) all relative horizontal plane tilt 30 °-60 °, axis (5) is installed in housing (4) internal axis position, the upper rotating disk (6) of installing of axis (5), can have mercy on axis (5) rotation of rotating disk (6), rotating disk (6) outward flange arranges shading ring (7), shading ring (7) is separated into the discoid cavity (8) at middle part and the toroidal cavity (9) of periphery by housing (4), drive motors (10) is set in discoid cavity (8), drive motors (10) is fixedly mounted on housing (4) inwall, driven wheel (11) is installed on the output shaft of drive motors (10), the upper ring gear (12) of installing of rotating disk (6), driven wheel (11) and ring gear (12) engagement, shading ring (7) outer wall is installed at least 2 material toggling frameworks (13), each material toggling framework (13) evenly arranges along shading ring (7) periphery wall, the upper sieving net (14) that covers of material toggling framework (13), the aperture of sieving net (14) is 85mm, in the circular side wall of housing (4) upside, offer raw coal inlet (15), the circular side wall that raw coal inlet (15) is positioned at housing (4) upside bottom, in the circular side wall of housing (4) downside, offer rough coal outlet (16), rough coal outlet (16) is positioned at circular side wall the top of housing (4) downside, raw coal inlet (15) is communicated with the discharging opening of raw coal disintegrating machine (17), rough coal outlet (16) is communicated with the charging aperture of raw coal disintegrating machine (17) by inclined ramp (18), on housing (4) annular sidewall, duff discharge gate (19) is set, duff discharge gate (19) is positioned at housing (4) annular sidewall bottom, duff discharge gate (19) locates to arrange discharge gate.
2. a kind of coal washing medium powder according to claim 1 and coal cleaning process, it is characterized in that: the raw coal material that the granularity that circulation broken coal equipment (1) 2. obtains step is less than 85mm is poured on vibration drop guide (21) in batches, vibration drop guide (21) is evenly poured over raw coal material on the belt conveyor of belt conveyor (20), by belt conveyor (20), send in raw material storage tank (2) and concentrate and store, vibration drop guide (21) comprises a base plate (22), base plate (22) is inclined relative to horizontal 5 °-15 °, Ji Liangge side, compare Gao one end, base plate (22) position all arranges baffle plate (23), baffle plate (23) is positioned at base plate (22) upside, vibrating motor (24) is installed in base plate (22) bottom surface, baffle plate (23) is connected with base (26) by support spring seat (25).
3. a kind of coal washing medium powder according to claim 1 and coal cleaning process, it is characterized in that: the step 4. interior raw coal material storing of Raw storage tank (2) is sent in three products heavy medium cyclone (3) by conveying worm (27), and the heavy-media suspension that medium storage tank (28) stores is sent in three products heavy medium cyclone (3) by medium pump (29).
4. a kind of coal washing medium powder according to claim 1 and coal cleaning process, it is characterized in that: described discharge gate has flashboard (30), the housing (4) at flashboard (30) one end and duff discharge gate (19) edge is hinged, the upper flashboard seat (31) of installing of housing (4), flashboard (30) is connected with flashboard seat (31) by hydraulic cylinder (32).
5. a kind of coal washing medium powder according to claim 1 and coal cleaning process, is characterized in that: two circular side wall of housing (4) all relative horizontal plane tilt 45 °.
6. a kind of coal washing medium powder according to claim 1 and coal cleaning process, it is characterized in that: 1. choosing magnetic material content is 98.0%, in coal washing medium powder, the granule content of-325 order granularities is 91.1%, the granule content of-600 order granularities is 50.5%, the coal washing medium powder that the sulfur content of coal washing medium powder is less than 0.1%;
Above-mentioned coal washing medium powder is sent into medium storage tank (28), and to be mixedly configured into heavy-media suspension standby with water in medium storage tank (28) for coal washing medium powder;
2. raw coal is sent into raw coal disintegrating machine (17) fragmentation in circulation broken coal equipment (1), the raw coal after fragmentation enters sorter;
3. sorter will be selected through the step raw coal that 2. granularity is less than 85mm after fragmentation, as raw coal material, send in raw material storage tank (2) and concentrate and store, and the former coal cinder that granularity after fragmentation is more than or equal to 85mm is sent back in raw coal disintegrating machine (17) again broken, until granularity is less than 85mm;
4. the raw coal material storing in raw material storage tank (2) is sent in three products heavy medium cyclone (3), simultaneously by step 1. in medium storage tank (28) heavy-media suspension of configuration send in three products heavy medium cyclone (3), three products heavy medium cyclone (3) sub-elect be mixed with coal washing medium cleaned coal, be mixed with the middle coal of coal washing medium and the spoil that is mixed with coal washing medium;
5. use the cleaned coal that is mixed with heavy-media suspension that de-mediated equipment (34) 4. obtains step, the coal washing medium being mixed with in the middle coal of heavy-media suspension and the spoil of heavy-media suspension to reclaim, obtain the moisture cleaned coal after de-mediated, moisture middle coal and moisture spoil, the coal washing medium that de-mediated equipment (34) reclaims is sent medium storage tank (28) back to by medium recovery pump (36), reconfigures heavy-media suspension;
6. use dehydration equipment (35) to step 5. in moisture cleaned coal, moisture middle coal and moisture spoil after de-mediated carry out processed, obtain respectively cleaned coal, middle coal and spoil finished product;
The step 2. middle circulation broken coal equipment (1) using comprises sorter and raw coal disintegrating machine (17), sorter has a hollow discoid housing (4), housing (4) comprises two circular side wall that are parallel to each other, two circular side wall borders connect by an annular sidewall, two circular side wall of housing (4) all relative horizontal plane tilt 45 °, axis (5) is installed in housing (4) internal axis position, the upper rotating disk (6) of installing of axis (5), can have mercy on axis (5) rotation of rotating disk (6), rotating disk (6) outward flange arranges shading ring (7), shading ring (7) is separated into the discoid cavity (8) at middle part and the toroidal cavity (9) of periphery by housing (4), drive motors (10) is set in discoid cavity (8), drive motors (10) is fixedly mounted on housing (4) inwall, driven wheel (11) is installed on the output shaft of drive motors (10), the upper ring gear (12) of installing of rotating disk (6), driven wheel (11) and ring gear (12) engagement, shading ring (7) outer wall is installed at least 2 material toggling frameworks (13), each material toggling framework (13) evenly arranges along shading ring (7) periphery wall, the upper sieving net (14) that covers of material toggling framework (13), the aperture of sieving net (14) is 85mm, in the circular side wall of housing (4) upside, offer raw coal inlet (15), the circular side wall that raw coal inlet (15) is positioned at housing (4) upside bottom, in the circular side wall of housing (4) downside, offer rough coal outlet (16), rough coal outlet (16) is positioned at circular side wall the top of housing (4) downside, raw coal inlet (15) is communicated with the discharging opening of raw coal disintegrating machine (17), rough coal outlet (16) is communicated with the charging aperture of raw coal disintegrating machine (17) by inclined ramp (18), on housing (4) annular sidewall, duff discharge gate (19) is set, duff discharge gate (19) is positioned at housing (4) annular sidewall bottom, duff discharge gate (19) locates to arrange discharge gate.
7. a raw coal continuous crushing method, is characterized in that: comprise the following steps:
1. raw coal is inserted in raw coal disintegrating machine (17) broken;
2. the raw coal after fragmentation that raw coal disintegrating machine (17) discharging opening is discharged falls into the raw coal inlet (15) of open circles plate-like housing (4), enters the toroidal cavity (9) in housing (4), accumulates in the bottom of toroidal cavity (9);
3. the rotating disk (6) in raw coal disintegrating machine (17) rotates under the driving of drive motors (10), by shading ring (7), drive material toggling framework (13) loopy moving in toroidal cavity (9), the former coal cinder that sieving net (14) on material toggling framework (13) is more than or equal to 85mm by granularity in broken coal is promoted to toroidal cavity (9) top, when arriving toroidal cavity (9) top, the former coal cinder that granularity is more than or equal to 85mm discharges from rough coal outlet (16), open at discharge gate interval on toroidal cavity (9) bottom shell (4) sidewall, the raw coal material that the granularity storing in toroidal cavity (9) is less than to 85mm is discharged,
4. the former coal cinder that the granularity that rough coal outlet (16) is discharged is more than or equal to 85mm slips into the charging aperture of raw coal disintegrating machine (17) along inclined ramp (18), again carry out fragmentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310583796.3A CN103611620B (en) | 2013-11-20 | A kind of coal washing medium powder and coal cleaning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310583796.3A CN103611620B (en) | 2013-11-20 | A kind of coal washing medium powder and coal cleaning process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103611620A true CN103611620A (en) | 2014-03-05 |
| CN103611620B CN103611620B (en) | 2016-11-30 |
Family
ID=
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787152A (en) * | 2018-07-25 | 2018-11-13 | 杨映泉 | A kind of centrifugal novel wash coaling equipment |
| CN109225500A (en) * | 2018-09-03 | 2019-01-18 | 陈婧琪 | A kind of process for refining of coal |
| CN111389579A (en) * | 2020-04-03 | 2020-07-10 | 榆林学院 | Dust protected selects coal to use dense medium flow distribution box |
| CN114042528A (en) * | 2021-11-17 | 2022-02-15 | 六盘水师范学院 | Coal mine washing and selecting treatment system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1318264A (en) * | 1919-10-07 | carpenter | ||
| GB804616A (en) * | 1956-11-05 | 1958-11-19 | Klaas Frederik Tromp | Improvements in and relating to apparatus for separating granular materials having different specific gravities by means of a liquid |
| US4775106A (en) * | 1987-09-28 | 1988-10-04 | Amax, Inc. | Use of smelter-grade sulfuric acid as true heavy-liquid media in coal cleaning |
| CN1089524A (en) * | 1993-01-13 | 1994-07-20 | 苏士才 | Screen mill |
| CN1212906A (en) * | 1998-10-16 | 1999-04-07 | 詹尼塞斯研究公司 | Coal cleaning process |
| CN103611621A (en) * | 2013-11-20 | 2014-03-05 | 高峰 | Heavy medium continuous coal washing unit and continuous raw coal crushing method |
| CN103623914A (en) * | 2013-11-20 | 2014-03-12 | 高峰 | Dense medium continuous coal washing process and raw coal continuous crushing method |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1318264A (en) * | 1919-10-07 | carpenter | ||
| GB804616A (en) * | 1956-11-05 | 1958-11-19 | Klaas Frederik Tromp | Improvements in and relating to apparatus for separating granular materials having different specific gravities by means of a liquid |
| US4775106A (en) * | 1987-09-28 | 1988-10-04 | Amax, Inc. | Use of smelter-grade sulfuric acid as true heavy-liquid media in coal cleaning |
| CN1089524A (en) * | 1993-01-13 | 1994-07-20 | 苏士才 | Screen mill |
| CN1212906A (en) * | 1998-10-16 | 1999-04-07 | 詹尼塞斯研究公司 | Coal cleaning process |
| CN103611621A (en) * | 2013-11-20 | 2014-03-05 | 高峰 | Heavy medium continuous coal washing unit and continuous raw coal crushing method |
| CN103623914A (en) * | 2013-11-20 | 2014-03-12 | 高峰 | Dense medium continuous coal washing process and raw coal continuous crushing method |
Non-Patent Citations (1)
| Title |
|---|
| 阴晶辉: "选煤用重介质粉工艺流程改造的思路与实践", 《科技情报开发与经济》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787152A (en) * | 2018-07-25 | 2018-11-13 | 杨映泉 | A kind of centrifugal novel wash coaling equipment |
| CN109225500A (en) * | 2018-09-03 | 2019-01-18 | 陈婧琪 | A kind of process for refining of coal |
| CN109225500B (en) * | 2018-09-03 | 2020-10-20 | 内蒙古蒙泰满来梁煤业有限公司 | Refining process of coal |
| CN111389579A (en) * | 2020-04-03 | 2020-07-10 | 榆林学院 | Dust protected selects coal to use dense medium flow distribution box |
| CN114042528A (en) * | 2021-11-17 | 2022-02-15 | 六盘水师范学院 | Coal mine washing and selecting treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103846145B (en) | A kind of raw coal washing system | |
| CN208230285U (en) | A kind of architectural furniture with crushing function | |
| CN104801434A (en) | Extraction process of clay, silica and iron ore by dry concentration | |
| CN87100843A (en) | Energy-saving crushing method and equipment | |
| CN110395927B (en) | Mechanical equipment for preparing regenerated sand stone material by utilizing building garbage particles | |
| CN103623914B (en) | The continuous coal cleaning process of a kind of dense media | |
| CN203408776U (en) | Noodle leftover material recovery system with dedusting device | |
| CN103611621B (en) | A kind of continuous wash coaling equipment of dense media and raw coal continuous crushing method | |
| CN204973696U (en) | Novel stirring machine | |
| CN105062605A (en) | Biomass particle forming method | |
| CN103611620A (en) | Coal washing medium powder and coal washing process | |
| CN204685569U (en) | Sparassis crispa cleans and crush device automatically | |
| CN108080109B (en) | Internal vibration crushing type brewing raw material powder making device | |
| CN103611620B (en) | A kind of coal washing medium powder and coal cleaning process | |
| CN108246459B (en) | A kind of construction waste crushing device | |
| CN213590621U (en) | Broken milling machine | |
| CN210411444U (en) | A screening shaking table for recycled concrete production | |
| CN204545317U (en) | A kind of antiquated sand reclaiming system | |
| CN202207617U (en) | Vibration grinding device | |
| CN206028105U (en) | A portable screening machine for ceramsite filter production | |
| CN103861706B (en) | A kind of continuous circulation broken coal equipment | |
| CN106140618A (en) | Novel ceramsite filtrate screening plant | |
| CN105214799A (en) | A kind of equipment pulverized for coating | |
| CN206793819U (en) | A kind of material-pulverizing device | |
| CN206229438U (en) | Drying hammer crushing seperator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 |