CN1088263A - The broken granulation coal of hammering and rolling Processes and apparatus - Google Patents
The broken granulation coal of hammering and rolling Processes and apparatus Download PDFInfo
- Publication number
- CN1088263A CN1088263A CN 92114458 CN92114458A CN1088263A CN 1088263 A CN1088263 A CN 1088263A CN 92114458 CN92114458 CN 92114458 CN 92114458 A CN92114458 A CN 92114458A CN 1088263 A CN1088263 A CN 1088263A
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- beans
- coal
- collector
- hammering
- blast furnace
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Abstract
The present invention is the broken granulation coal of an a kind of hammering and rolling Processes and apparatus, is used to prepare iron-smelting blast furnace winding-up beans.Its technical process is that raw coal is behind the hammer crushing crusher machine, by the high angle belt conveyer machine be transported to roll squeezer again fine crushing make beans, the beans of process thermal chimney road thermal dehydration is sent to the blast furnace blowing system through the rigidity revolving plow reclaimer again by induced draft fan suction cloth bag beans collector.This characteristic feature of an invention is: with broken cartridge type or the medium-speed pulverizer grinding machine of replacing of two-stage, save traditional " one revolves " and " multitube " two-stage collector.Thereby the simplification technical process reduces energy consumption, alleviates noise and dust pollution.
Description
The present invention is the broken granulation coal of an a kind of hammering and rolling Processes and apparatus, belongs to the iron-smelting blast furnace coal injection system.
Current pulverized coal injection both at home and abroad is blown in the stove with the hard coal or the bituminous coal of powdery (200 orders＞80%).The preparation technology of coal dust and equipment is as shown in Figure 1: raw coal to run coal bin, is quantitatively sent into ball mill or medium-speed pulverizer grinding machine fine grinding by disc feeder through adhesive tape conveyor.Meanwhile hot flue gas also enters ball mill or medium-speed pulverizer grinding machine the raw coal of pulverizing is carried out thermal dehydration through the thermal chimney road.Fine coal behind the thermal dehydration is by primary air fan suction conny separator, bulk is returned ball mill, flour enters mill separator, meal returns ball mill through returning coal pipe and air locking device, the fines that meets the winding-up requirement enters the one-level rotoclone collector with flue gas, sends into the Pulverized Coal Bin of injection system through the rigidity revolving plow reclaimer; Remaining fines enters secondary multitube collector and collects fines once more in the flue gas, sends into the Pulverized Coal Bin of injection system equally once more through the rigidity revolving plow reclaimer; Do not receive yet clean fines with flue gas by primary air fan by three grades of cloth bag collectors of overfire air fan suction, collection meet fines that winding-up requires still enters injection system through the rigidity revolving plow reclaimer Pulverized Coal Bin.Flue gas enters atmosphere.This flouring technology and equipment are numerous and diverse, and energy consumption is big, the investment cost height, and the long floor space of operation is big, and the Noise abatement difficulty requires extremely tight, especially all the more so during blowing bituminous coal to the burn-proof and explosion prevention security measures of powder process and injection system.
The objective of the invention is by simplifying preparation fine coal technical process and equipment, enlarge bituminous coal winding-up amount raising coal-to-coke replacement to reach, reduce the facility investment energy consumption, improve environment, reduce noise pollution, for the blast furnace blowing system provides perfect beans preparation technology flow process and equipment.
For achieving the above object by following technology contents: the run coal bin raw coal is distributed into hammer mill (feed size＜120mm through the feed conveyor drive to disc feeder; Discharging-material size＜10mm).Thick broken raw coal is sent into roll squeezer by the lifting of high angle belt conveyer machine and is broken into beans (feed size＜10mm again; Discharging-material size＜0.09～2.0mm accounts for 25%, and＜2.0mm account for 65～80%).Beans enters aggregate bin and sends into gas-solid body mixture heat flue thermal dehydration by the rigidity revolving plow reclaimer, and wind delivers to cloth bag beans collector, is delivered to the beans storehouse of injection system again by the rigidity revolving plow reclaimer.Waste heat flue gas enters atmosphere by induced draft fan.
Characteristics of the present invention are: main technique equipment is with the slightly broken raw coal of hammer mill; With roll squeezer replacement cartridge type in small, broken bits coal pulverizer or medium-speed pulverizer coal pulverizer; Remove one-level rotoclone collector and secondary multitube collector in original pulverized coal preparation system, simplified technical process, reduced equipment and investment, reduced noise and environmental pollution.The beans that the present invention makes can replace fine coal, and in the blast furnace blowing process,, not only improve coal-to-coke replacement and save metallurgical coke with the lower higher hard coal of bituminous coal for replacing ash content of ash content, but also the security that can improve coal injection system.
Further specify the different and advanced of the present invention and original technology in conjunction with the accompanying drawings.
Fig. 1, original flouring technology and equipment drawing.
Piece number among the figure: 1 feed conveyor drive, 2 run coal bins, 3 disc feeders, 4 thermal chimney roads, 5 ball mills, 6 conny separators, 7 mill separators, 8 times coal pipes, 9 air locking devices, 10 one-level rotoclone collectors, 11 secondary multitube collectors, 12 primary air fans, 13 3 grades of cloth bag collectors, 14 overfire air fans, 15 rigidity revolving plow reclaimers.
Fig. 2, the broken granulation coal of hammering and rolling Processes and apparatus figure.
Piece number among the figure: 1 feed conveyor drive, 2 run coal bins, 3 disc feeders, 4 hammer mills, 5 high angle belt conveyer machines, 6 roll squeezers, 7 aggregate bins, 8 rigidity revolving plow reclaimers, 9 gas-solid body mixture heat flues, 10 cloth bag beans collectors, 11 induced draft fans.
2 embodiment are described in conjunction with the accompanying drawings: by flow process shown in Figure 2 and device location, feed conveyor drive 1 is corresponding with run coal bin 2.Establish disc feeder 3 in run coal bin 2 bottoms, and corresponding with hammer mill 4.At hammer mill exit peace high angle belt conveyer machine 5.High angle belt conveyer drive head unit below peace roll squeezer 6, its underpart outlet dress aggregate bin 7.The aggregate bin outlet connects rigidity revolving plow reclaimer 8, and joins with thermal chimney road 9.Thermal chimney road 9 links to each other with cloth bag beans collector 10.The outlet of cloth bag beans collector connects induced draft fan, and the bottom connects rigidity revolving plow reclaimer 8.Raw coal is made beans through the technological process apparatus of above composition and is sent to the blast furnace blowing system.
Claims (1)
1, the broken granulation coal of a kind of hammering and rolling Processes and apparatus, it is characterized in that: technical process is that raw coal is behind hammer crushing, by the high angle belt conveyer machine be transported to roll squeezer again fine crushing make beans, the beans of process thermal chimney road thermal dehydration is sent to the blast furnace blowing system through the rigidity revolving plow reclaimer again by induced draft fan suction cloth bag beans collector.The equipment of whole process flow is formed: raw coal feed conveyor drive, run coal bin, disc feeder, hammer mill, high angle belt conveyer machine, roll squeezer, aggregate bin, rigidity revolving plow reclaimer, gas-solid body mixture heat flue, cloth bag beans collector, induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114458 CN1088263A (en) | 1992-12-18 | 1992-12-18 | The broken granulation coal of hammering and rolling Processes and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114458 CN1088263A (en) | 1992-12-18 | 1992-12-18 | The broken granulation coal of hammering and rolling Processes and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1088263A true CN1088263A (en) | 1994-06-22 |
Family
ID=4946940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114458 Pending CN1088263A (en) | 1992-12-18 | 1992-12-18 | The broken granulation coal of hammering and rolling Processes and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1088263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451006A (en) * | 2014-12-11 | 2015-03-25 | 山东钢铁股份有限公司 | Pea coal pulverizing system and pea coal pulverizing method |
-
1992
- 1992-12-18 CN CN 92114458 patent/CN1088263A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451006A (en) * | 2014-12-11 | 2015-03-25 | 山东钢铁股份有限公司 | Pea coal pulverizing system and pea coal pulverizing method |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C12 | Rejection of a patent application after its publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |