CN103639032A - Centralized large lump coal crushing process - Google Patents
Centralized large lump coal crushing process Download PDFInfo
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- CN103639032A CN103639032A CN201310725359.0A CN201310725359A CN103639032A CN 103639032 A CN103639032 A CN 103639032A CN 201310725359 A CN201310725359 A CN 201310725359A CN 103639032 A CN103639032 A CN 103639032A
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Abstract
The invention discloses a centralized large lump coal crushing process. The centralized large lump coal crushing process comprises the following steps: screening raw coal coming from a mine, manually picking up gangues and impurities from +80-mm raw lump coal, putting the raw lump coal into a lump coal bin, and starting a crusher after a certain amount of raw lump coal is stored for centralized crushing; changing a passive material receiving mode of the crusher into an active material receiving mode to realize the centralized crushing; selecting the crushed lump coal by washing; after the centralized crushing is finished, stopping the crusher; when a certain amount of +80-mm large lump coal is stored, re-starting the crusher for crushing to enable the crusher to be in an intermittent working state. According to the centralized large lump coal crushing process, the working environment is improved, and workers are protected from working in a high-noise and heavy-dust environment for a long time; when coal quality is changed, the condition of the coal quality is improved; the crushed lump coal is mixed into the raw coal with poor coal quality, so that certain effects in improving a separation effect and improving the sedimentation rate of coal slurry are achieved; the economic benefits are remarkable, the crusher does not work in the peak and rush periods of electrovalence, and electricity of 112,000kw/h is saved annually; meanwhile, the service life of equipment is prolonged, and the abrasion of the equipment is reduced.
Description
Technical field
The present invention relates to a kind of coarse coal crushing process, the raw coal that is practically applicable to small and medium coal preparation plant is prepared link, and adopt coarse coal is put in storage, then the Convergency fracturing of the selecting a good opportunity mode that enters to wash, replace broken in real time technique.
Background technology
At present, mostly the design of the raw coal preparatory technology of coal preparation plant all adopts fragmentation in real time, and disintegrating machine start-stop is subject to the impact of mine coal lifting, and regardless of different kinds of mine coal lifting amount, disintegrating machine all must be opened.The technique of prior art is: mine raw coal is out through screening, and the bulk raw coal of+80mm enters picking, chooses spoil and foreign material, and+80mm needs broken piece raw coal directly to enter disintegrating machine to carry out fragmentation above, and the piece raw coal after fragmentation enters lump coal storehouse.That is to say, existing technique is as long as no matter mine hoisting promotes coal amount how many, and disintegrating machine is just always in running status.In fact, in the reasonable time of having, disintegrating machine, all in idle running or in less treating capacity, not only wastes energy concerning coal preparation plant, equipment has also been caused to certain loss simultaneously, has reduced service life of equipment.Small and medium coal preparation plant needs broken coarse coal amount little, adopts broken in real time technique disintegrating machine utilization rate lower.
Summary of the invention
The technical problem to be solved in the present invention is: design a kind of coarse coal crushing process, solve small and medium coal preparation plant disintegrating machine and need long-time unlatching, waste energy and a difficult problem that utilization rate of equipment and installations is low.
Solving the technical scheme that problem of the present invention takes is: mine raw coal is out through screening, the piece raw coal of+80mm enters picking, after choosing spoil and foreign material, enter lump coal storehouse, stockpile and open disintegrating machine after some and carry out Convergency fracturing, the passive material feeding of disintegrating machine is become to initiatively material feeding, realize Convergency fracturing, the lump coal after fragmentation enters washing operation again; After Convergency fracturing, close down disintegrating machine, when+80mm coarse coal stockpiles after some, then open disintegrating machine and carry out fragmentation, circulation so always, disintegrating machine is in discontinuous operation state.
Good effect of the present invention is
:1, improved working environment, in disintegrating machine running, inevitably produce noise and dust, realize after Convergency fracturing, disintegrating machine is only opened 2 hours every day, avoid worker to be in for a long time on the post of high noisy, dust, improved greatly the working environment in raw coal screening building; When 2, ature of coal changes, improve ature of coal situation, occurring that raw coal clay content is large, argillization, containing impacts such as cash are large, produce unfavorable factor time, can carry out coarse coal fragmentation, and the lump coal after fragmentation is mixed to raw coal enter to wash, to improve ature of coal situation, be proven, in the poor raw coal of ature of coal, mix broken lump coal, improving separating effect, improving the aspects such as the black water rate of settling has certain effect; 3, remarkable in economical benefits, the applicant enterprise mine raw coal on average promotes 16 hours every day, adopt old technique disintegrating machine need move 16 hours, wherein spike, peak, flat section, low ebb electricity price differ larger, period accounts for respectively 2 hours, 1 hour, 6 hours, 7 hours, annual power consumption 12.84 ten thousand kwh, annual electricity cost is 7.4 ten thousand yuan; Adopt technique of the present invention average every day of Convergency fracturing 2 hours, all broken at low-valley interval, annual power consumption is 1.6 ten thousand kwh, and a year electricity cost is 5300 yuan, and annual using electricity wisely 11.2 ten thousand kwh, save 6.87 ten thousand yuan of electricity costs; Simultaneously extension device service life, reduce equipment attrition, the 10000 yuan of left and right of reducing expenses every year.
Accompanying drawing explanation
Accompanying drawing 1 is process equipment flow chart of the present invention.
The specific embodiment
As shown in Figure 1, behind the skip bucket storehouse of raw coal from main shaft hooist to coal preparation plant, by feeder, be given to raw coal belt 1, by raw coal belt 1, transport to coal classification vibratory sieve 3, the raw coal being divided into below 80mm by coal classification vibratory sieve 3 enters run coal bin 5 by raw coal reprinting belt 4, and bulk raw coal more than 80mm is after conveyer picker 2 is picked out spoil and foreign material, entering bulk coal bunker 6 stockpiles, stockpile after some, open disintegrating machine 7 and carry out fragmentation, the lump coal after fragmentation directly enters washing operation and carries out sorting.
Claims (1)
1. a coarse coal Convergency fracturing technique, concrete technical scheme is: mine raw coal is out through screening, the bulk raw coal of+80mm enters picking, after choosing spoil and foreign material, enter lump coal storehouse, stockpile and open disintegrating machine after some and carry out Convergency fracturing, the passive material feeding of disintegrating machine is become to initiatively material feeding, realize Convergency fracturing, the piece raw coal after fragmentation enters washing operation again; After Convergency fracturing, close down disintegrating machine, when+80mm coarse coal stockpiles after some, then open disintegrating machine and carry out fragmentation, circulation so always, disintegrating machine is in discontinuous operation state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725359.0A CN103639032A (en) | 2013-12-25 | 2013-12-25 | Centralized large lump coal crushing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725359.0A CN103639032A (en) | 2013-12-25 | 2013-12-25 | Centralized large lump coal crushing process |
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| Publication Number | Publication Date |
|---|---|
| CN103639032A true CN103639032A (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310725359.0A Pending CN103639032A (en) | 2013-12-25 | 2013-12-25 | Centralized large lump coal crushing process |
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| CN (1) | CN103639032A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106179676A (en) * | 2016-07-18 | 2016-12-07 | 淮南矿业(集团)有限责任公司 | A kind of dry coal preparation and processing method |
| CN109701715A (en) * | 2019-01-14 | 2019-05-03 | 乌拉特中旗毅腾矿业有限责任公司 | A kind of raw coal feeding screening technology |
| CN111298940A (en) * | 2020-03-18 | 2020-06-19 | 欧战备 | Pre-gangue discharge process for coking coal as selected raw material coal and screening device thereof |
| CN112871406A (en) * | 2021-01-12 | 2021-06-01 | 黑龙江龙煤双鸭山矿业有限责任公司 | Deep screening and crushing process for raw coal system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319619A (en) * | 2011-09-13 | 2012-01-18 | 山东新矿赵官能源有限责任公司 | Graded washing process for raw coal |
-
2013
- 2013-12-25 CN CN201310725359.0A patent/CN103639032A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319619A (en) * | 2011-09-13 | 2012-01-18 | 山东新矿赵官能源有限责任公司 | Graded washing process for raw coal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106179676A (en) * | 2016-07-18 | 2016-12-07 | 淮南矿业(集团)有限责任公司 | A kind of dry coal preparation and processing method |
| CN109701715A (en) * | 2019-01-14 | 2019-05-03 | 乌拉特中旗毅腾矿业有限责任公司 | A kind of raw coal feeding screening technology |
| CN111298940A (en) * | 2020-03-18 | 2020-06-19 | 欧战备 | Pre-gangue discharge process for coking coal as selected raw material coal and screening device thereof |
| CN112871406A (en) * | 2021-01-12 | 2021-06-01 | 黑龙江龙煤双鸭山矿业有限责任公司 | Deep screening and crushing process for raw coal system |
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Application publication date: 20140319 |