JPH0480307A - Device for drying powdered coal blown into blast furnace - Google Patents
Device for drying powdered coal blown into blast furnaceInfo
- Publication number
- JPH0480307A JPH0480307A JP2190745A JP19074590A JPH0480307A JP H0480307 A JPH0480307 A JP H0480307A JP 2190745 A JP2190745 A JP 2190745A JP 19074590 A JP19074590 A JP 19074590A JP H0480307 A JPH0480307 A JP H0480307A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- blast furnace
- exhaust gas
- pulverized
- coal
- 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 58
- 238000001035 drying Methods 0.000 title claims abstract description 44
- 238000007664 blowing Methods 0.000 claims abstract description 13
- 238000010298 pulverizing process Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 abstract description 66
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 239000000112 cooling gas Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000000571 coke Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000011261 inert gas Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Drying Of Solid Materials (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は高炉吹込み微粉炭乾燥装置に関し、さらに詳し
くは、高炉吹込み微粉炭乾燥装置の粉砕乾燥ミルの乾燥
用ガスを循環して使用し、この循環ガス系路に脱湿装置
を備えた高炉吹込み微粉炭乾燥装置に係る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a blast furnace blown pulverized coal drying device, and more specifically, to a method for circulating and using the drying gas of the pulverized drying mill of the blast furnace blown pulverized coal drying device. The present invention relates to a blast furnace injection pulverized coal drying device that is equipped with a dehumidifying device in the circulating gas system.
高炉に微粉炭を吹込む吹込装置のフローシートを第２図
に示した。Figure 2 shows a flow sheet for the blowing device that blows pulverized coal into the blast furnace.
湿潤石炭は原料炭バンカ１０１１フイードビン１０２を
経て粉砕乾燥ミル１０３に供給され、ここで熱風と共に
粉砕乾燥されて乾燥微粉炭となり排ガスと共に排出され
る。Wet coal is supplied to a pulverizing and drying mill 103 via a coking coal bunker 1011 and a feed bin 102, where it is pulverized and dried together with hot air to become dry pulverized coal and discharged together with exhaust gas.
この粉砕乾燥ミルの乾燥用のガスは、熱風発生炉１０４
でＢガス（高炉ガス）１０５ａ、および／またはＣガス
（コークス炉ガス）１０５を燃焼用空気１０６で燃焼さ
せた排ガスに、温度調節用冷却ガスとして不活性ガス１
０７を加えて供給されるものである。この乾燥用ガスは
粉砕乾燥ミル１０３内で湿炭を乾燥し、粉砕乾燥された
微粉炭を伴って粉砕乾燥ミル１０３から排出される。ガ
スと共に排出された微粉炭はサイクロン１１１、バグフ
ィルタ１１２にて捕集され、高炉微粉炭吹込装置の微粉
炭貯蔵ホッパ１１３に溜められる。The drying gas for this pulverizing drying mill is supplied from a hot air generating furnace 104.
Inert gas 1 is added to the exhaust gas obtained by burning B gas (blast furnace gas) 105a and/or C gas (coke oven gas) 105 with combustion air 106 as a cooling gas for temperature adjustment.
07 is added to the supply. This drying gas dries the wet coal in the pulverizing and drying mill 103, and is discharged from the pulverizing and drying mill 103 together with the pulverized and dried pulverized coal. The pulverized coal discharged together with the gas is collected by a cyclone 111 and a bag filter 112, and stored in a pulverized coal storage hopper 113 of a blast furnace pulverized coal injection device.
微粉炭を分離した排ガスは煙突１２０から放出される。The exhaust gas from which the pulverized coal has been separated is released from the chimney 120.
微粉炭貯蔵ホッパ１１３に蓄えられた微粉炭は中間タン
ク１１４を経て吹込みタンク１１５に送られ、加圧ガス
１１６によって加圧された後、微粉炭供給管１１８中を
キャリアガス１１７によって送られ、高炉の羽口管から
高炉１１９内に吹込まれる。The pulverized coal stored in the pulverized coal storage hopper 113 is sent to a blowing tank 115 via an intermediate tank 114, and after being pressurized by a pressurized gas 116, is sent through a pulverized coal supply pipe 118 by a carrier gas 117, It is blown into the blast furnace 119 from the tuyere tube of the blast furnace.
以上のように、湿炭を乾燥するために、湿炭の粉砕乾燥
ミル１０３に導入するガス発生用の熱風発生炉１０４で
発生した熱ガスは、高温のために冷却する必要があり、
温度の低いガスを混入する。この高温熱ガス冷却用のガ
スは微粉炭の炭塵爆発を防止するために、酸素を殆ど含
まない不活性ガスでなければならない。このような不活
性ガスとしては、窒素ガスや燃焼排ガス等が用いられる
。As mentioned above, in order to dry wet coal, the hot gas generated in the hot air generating furnace 104 for gas generation, which is introduced into the wet coal pulverizing and drying mill 103, needs to be cooled due to its high temperature.
Mix low temperature gas. This high-temperature gas cooling gas must be an inert gas containing almost no oxygen in order to prevent coal dust explosion of pulverized coal. As such an inert gas, nitrogen gas, combustion exhaust gas, etc. are used.
不活性ガスとして、高炉吹込み微粉炭乾燥装置の煙突１
２０から排出される排ガスの一部又は全部を、ファンで
循環して熱風発生炉に導（技術もあるが、このような技
術では従来、循環ガス中の水分濃度が高くなるために、
高炉微粉炭吹込み装置の運転開始時又は運転終了時に適
用されているに過ぎなかった。As an inert gas, chimney 1 of blast furnace injection pulverized coal drying equipment
Some or all of the exhaust gas discharged from the 20 is circulated by a fan and guided to the hot air generating furnace (there is also a technique, but conventionally, such a technique increases the moisture concentration in the circulating gas.
It was only applied at the start or end of operation of the blast furnace pulverized coal injection equipment.
［発明が解決しようとする課題］
熱風発生炉用に、不活性ガスとして、窒素ガスを用いる
ことは運転費用が極−めて高くなる問題がある。一方、
燃焼後の排ガスを用いる場合は、穀に、その燃焼装置の
運転に影響されたり、その排ガスの輸送ルートのレイア
ウトが難しいという問題がある。また、高炉吹込み微粉
炭乾燥装置の排ガスをＩＪｔｒ １Ｍするのは、循環ガ
ス中の水分含有量が高くなって、定常的に使うことがで
きない。[Problems to be Solved by the Invention] Using nitrogen gas as an inert gas for a hot air generating furnace has the problem of extremely high operating costs. on the other hand,
When using exhaust gas after combustion, there are problems in that the grain is affected by the operation of the combustion equipment and that it is difficult to lay out the transportation route for the exhaust gas. Moreover, if the exhaust gas of the blast furnace injection pulverized coal drying device is IJtr 1M, the water content in the circulating gas becomes high, and it cannot be used regularly.
そこで、本発明はこれらの問題点を解決するために、高
炉吹込み微粉炭乾燥装置の排ガスを循環する経路に脱湿
装置を設け、この脱；Ｂ装置で水分を除去して熱風発生
炉の不活性ガスとして使用することとした。Therefore, in order to solve these problems, the present invention provides a dehumidifying device in the path for circulating the exhaust gas of the blast furnace blowing pulverized coal drying device, and removes moisture with this dehumidifying device B to dry the hot air in the hot air generating furnace. It was decided to use it as an inert gas.
本発明は、高炉吹込み微粉炭乾燥装置の排ガスラインか
ら排ガスをファンで取出して循環する一方、循環ガス中
の水分を除去して、定常的に、熱風発生炉用の不活性ガ
スとして使用できるようにする装置を提供することを目
的とする。The present invention extracts exhaust gas from the exhaust gas line of a blast furnace blowing pulverized coal drying device using a fan and circulates it, while removing moisture from the circulating gas so that it can be constantly used as an inert gas for a hot air generating furnace. The purpose of the present invention is to provide a device that does the following.
［課題を解決するための手段１
本発明は、熱風発生炉と、この熱風発生炉の発生ガスを
導入して湿炭を粉砕乾燥する粉砕乾燥ミルを備えた高炉
吹込み微粉炭乾燥装置において、微粉炭粉砕乾燥ミルの
粉砕乾燥後の排ガス管に分岐管を設け、この分岐管を脱
湿装置に連結し、この脱湿装置の出口管を熱風発生炉の
出口側に結合したことを特徴とする高炉吹込み微粉炭乾
燥装置である。[Means for Solving the Problems 1] The present invention provides a blast furnace blowing pulverized coal drying apparatus equipped with a hot air generating furnace and a pulverizing drying mill for pulverizing and drying wet coal by introducing gas generated from the hot air generating furnace. A branch pipe is provided in the exhaust gas pipe after grinding and drying of the pulverized coal grinding and drying mill, this branch pipe is connected to a dehumidifier, and the outlet pipe of the dehumidifier is connected to the outlet side of the hot air generating furnace. This is a blast furnace injection pulverized coal drying device.
ｒ作用］
本発明の最も特徴とするところは、高炉吹込み微粉炭乾
燥装置の排ガスラインに分岐管を設けて排ガスを循環使
用する場合に、この分岐管の経路に脱湿装置を備え循環
ガス中の湿分上昇を防止し、定常的にこの排ガスを粉砕
乾燥ミルの循環ガスとして使用することができるように
したことにある。r effect] The most characteristic feature of the present invention is that when a branch pipe is provided in the exhaust gas line of the blast furnace blowing pulverized coal drying equipment to circulate and use the exhaust gas, a dehumidifier is provided in the route of this branch pipe to prevent the circulating gas from being used. The purpose is to prevent the moisture content from rising inside the mill, and to make it possible to constantly use this exhaust gas as a circulating gas for the grinding and drying mill.
第１図に本発明の実施例のフローシートを示した。高炉
吹込み微粉炭の原料である湿石炭ｌは粉砕乾燥ミル３に
供給される。熱風発生炉４ではＢガス（高炉ガス）５ａ
、および／またはＣガス（コークス炉ガス）５を燃焼用
空気６で燃焼して熱ガスを発生し、これを冷却ガスで温
度調節して熱風として粉砕乾燥ミル３に供給する。湿炭
は吹込まれる熱風によって粉砕乾燥ミル内で粉砕されな
がら乾燥され、この熱風と共に排出管７から排出される
。乾燥微粉炭はバグフィルタ４２で捕集され微粉炭貯蔵
ホッパ４３に貯蔵される。微粉炭を分離した排ガスは煙
突２０から放出される。FIG. 1 shows a flow sheet of an example of the present invention. Wet coal 1, which is a raw material for blast furnace-injected pulverized coal, is supplied to a pulverization drying mill 3. In the hot air generating furnace 4, B gas (blast furnace gas) 5a
, and/or C gas (coke oven gas) 5 is combusted with combustion air 6 to generate hot gas, the temperature of which is adjusted with cooling gas and supplied to the pulverizing and drying mill 3 as hot air. The wet coal is pulverized and dried in the pulverizing and drying mill by the hot air blown into it, and is discharged from the discharge pipe 7 together with the hot air. The dry pulverized coal is collected by a bag filter 42 and stored in a pulverized coal storage hopper 43. The exhaust gas from which the pulverized coal has been separated is released from the chimney 20.
排ガスライン７から高炉吹込み微粉炭乾燥装置の排ガス
の１部または全部を分岐する分岐管２１を設け、ファン
２２で排ガスを吸引し、脱湿装置２３に導く。脱湿装置
２３では粉砕乾燥ミル３に投入された原料の湿炭に含ま
れる水分を除去する。脱湿装置２３から排出されたガス
は脱湿装置の出口管２４を経て熱風発生炉４の出口側に
導入され、熱風発生炉４から供給される熱風の温度を調
整する。A branch pipe 21 is provided to branch part or all of the exhaust gas from the blast furnace blowing pulverized coal drying device from the exhaust gas line 7 , and the exhaust gas is sucked by a fan 22 and guided to a dehumidification device 23 . The dehumidifying device 23 removes moisture contained in the raw material wet coal fed into the pulverizing and drying mill 3. The gas discharged from the dehumidifier 23 is introduced into the outlet side of the hot air generator 4 through the outlet pipe 24 of the dehumidifier, and adjusts the temperature of the hot air supplied from the hot air generator 4.
このようにして、高炉吹込み微粉炭乾燥装置の排ガスは
不活性ガスとして、高炉吹込み微粉炭乾燥装置内部で循
環される。In this way, the exhaust gas of the blast furnace blown pulverized coal drying device is circulated as an inert gas inside the blast furnace blown pulverized coal drying device.
脱湿装置２３として、スクラバーを使った場合、スクラ
バー内にはスプレーノズル２５、充填物２６を備え、排
ガスを冷却する。この冷却により、排ガス中の余分の含
水量を除去する。排ガスを冷却した水は温水ライン３０
、温水ポンプ３１によってクーリングタワー３２に供給
される。When a scrubber is used as the dehumidification device 23, the scrubber is equipped with a spray nozzle 25 and a filling 26 to cool the exhaust gas. This cooling removes excess water content in the exhaust gas. The water that cooled the exhaust gas is supplied to the hot water line 30.
, is supplied to the cooling tower 32 by a hot water pump 31.
クーリングタワーで冷却された水は水槽３３に溜り、冷
却水ポンプ２８により吸入ライン２９、冷却水管２７を
経てスプレーノズルに循環される。The water cooled by the cooling tower is collected in a water tank 33 and is circulated by a cooling water pump 28 through a suction line 29 and a cooling water pipe 27 to a spray nozzle.
実施例装置を用いた場合のマテリアルバランスの一例を
第１表に示した。Table 1 shows an example of the material balance when using the example device.
湿炭の水分持込量は１，５００ｋｇ／ｈ程度であり、ス
クラバー人ロガスの飽和水分量は２２．５００ｋｇ／ｈ
程度、スクラバー出ロガスの飽和水分量は１１，７００
ｋｇ／ｈ程度である。従って、湿炭を十分乾燥する能力
があり、また、クーリングタワーの能力は湿炭持込水分
を除去するのに十分大きい能力がある。The moisture content of wet coal is about 1,500 kg/h, and the saturated moisture content of scrubber log gas is 22,500 kg/h.
The saturated moisture content of the log gas from the scrubber is 11,700.
kg/h. Therefore, there is an ability to sufficiently dry the wet coal, and the capacity of the cooling tower is large enough to remove moisture brought in by the wet coal.
第
表
［発明の効果］
本発明によれば他から不活性ガスを持って（ることなく
、高炉吹込み微粉炭乾燥装置の中で自己完結できる。Table 1 [Effects of the Invention] According to the present invention, it can be self-contained in the blast furnace blowing pulverized coal drying apparatus without having to bring an inert gas from other sources.
即ち、循環方式により水分濃度が高くなるのを、露点を
低下させてスクラバーによって脱水し、熱風発生炉から
の熱ガスを不活性ガスとして循環ガスで温度調節するこ
とができる。That is, the high water concentration caused by the circulation method can be dehydrated by a scrubber by lowering the dew point, and the temperature can be adjusted using the circulating gas using the hot gas from the hot air generating furnace as an inert gas.
第１図は本発明の実施例のフローシート、第２図は高炉
微粉炭吹込装置のフローシートである。
ｌ・・・湿石炭 ３・・・粉砕乾燥ミル４・・
・熱風発生炉 ５・・・燃料ガス６・・・空気
７・・・排ガスライン２１・・・分岐管
２２・・・ファン２３・・・脱湿装置 ２４・・
・出口管２５・・・スプレーノズル
２６・・・充填物 ２７・・・冷却水管２８・・
・冷却水ポンプ ２９・・・吸入ライン３０・・・温水
ライン ３１・・・温水ポンプ３２・・・クーリング
タワー
３３・・・水槽 ４２・・・バグフィルタ４３
・・・微粉炭貯蔵タンクFIG. 1 is a flow sheet of an embodiment of the present invention, and FIG. 2 is a flow sheet of a blast furnace pulverized coal injection device. l...Wet coal 3...Crushing dry mill 4...
・Hot air generator 5...Fuel gas 6...Air
7...Exhaust gas line 21...Branch pipe
22...Fan 23...Dehumidifier 24...
・Outlet pipe 25...Spray nozzle 26...Filling material 27...Cooling water pipe 28...
- Cooling water pump 29... Suction line 30... Hot water line 31... Hot water pump 32... Cooling tower 33... Water tank 42... Bag filter 43
...Pulverized coal storage tank
Claims (1)
湿炭を粉砕乾燥する粉砕乾燥ミルとから成る高炉吹込み
微粉炭乾燥装置において、該粉砕乾燥ミルの排出ガス管
に分岐管を設け、該分岐管を脱湿装置に連結し、該脱湿
装置の出口管を前記熱風発生炉の出口側に結合したこと
を特徴とする高炉吹込み微粉炭乾燥装置。1. In a blast furnace blowing pulverized coal drying device consisting of a hot air generating furnace and a pulverizing drying mill that introduces gas generated from the hot air generating furnace to crush and dry wet coal, a branch pipe is connected to the exhaust gas pipe of the pulverizing drying mill. A blast furnace blowing pulverized coal drying apparatus, characterized in that the branch pipe is connected to a dehumidifier, and the outlet pipe of the dehumidifier is connected to the outlet side of the hot air generating furnace.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2190745A JPH0742491B2 (en) | 1990-07-20 | 1990-07-20 | Blast furnace blowing pulverized coal dryer |
| ZA915501A ZA915501B (en) | 1990-07-20 | 1991-07-15 | Blast furnace pulverized coal injection drying apparatus |
| AU80471/91A AU8047191A (en) | 1990-07-20 | 1991-07-16 | Blast furnace pulverized coal injection drying apparatus |
| EP91112059A EP0467375A1 (en) | 1990-07-20 | 1991-07-18 | Blast furnace pulverized coal injection drying apparatus |
| CA002047416A CA2047416A1 (en) | 1990-07-20 | 1991-07-19 | Blast furnace pulverized coal injection drying apparatus |
| BR919103105A BR9103105A (en) | 1990-07-20 | 1991-07-19 | DRYING APPLIANCE WITH SPRAYED HIGH-OVEN COAL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2190745A JPH0742491B2 (en) | 1990-07-20 | 1990-07-20 | Blast furnace blowing pulverized coal dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0480307A true JPH0480307A (en) | 1992-03-13 |
| JPH0742491B2 JPH0742491B2 (en) | 1995-05-10 |
Family
ID=16263047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2190745A Expired - Lifetime JPH0742491B2 (en) | 1990-07-20 | 1990-07-20 | Blast furnace blowing pulverized coal dryer |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0467375A1 (en) |
| JP (1) | JPH0742491B2 (en) |
| AU (1) | AU8047191A (en) |
| BR (1) | BR9103105A (en) |
| CA (1) | CA2047416A1 (en) |
| ZA (1) | ZA915501B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011522081A (en) * | 2008-06-02 | 2011-07-28 | ポール ヴルス エス．エイ． | Pulverized coal production method |
| CN105651035A (en) * | 2016-02-29 | 2016-06-08 | 成都绿迪科技有限公司 | Peat drying device |
| JP2021105464A (en) * | 2019-12-26 | 2021-07-26 | 川崎重工業株式会社 | Coal crushing system |
| CN113457814A (en) * | 2021-06-22 | 2021-10-01 | 镇江市蓝火环保能源有限公司 | Coal powder treatment method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2281311B (en) * | 1993-03-29 | 1996-09-04 | Boc Group Plc | Metallurgical processes and apparatus |
| KR100862774B1 (en) * | 2002-08-06 | 2008-10-13 | 주식회사 포스코 | Pulverixed coal manufacturing apparatus |
| LU91451B1 (en) * | 2008-06-02 | 2009-12-03 | Wurth Paul Sa | Method for producing pulverized coal |
| CN109733757B (en) * | 2019-01-18 | 2023-07-07 | 华电电力科学研究院有限公司 | Explosion-proof device and explosion-proof method for pulverized coal bin charging smoke |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61111946U (en) * | 1984-12-26 | 1986-07-15 | ||
| JPS62123217A (en) * | 1985-11-22 | 1987-06-04 | Sumitomo Metal Ind Ltd | Drying of pulverized coal for blasting into blast furnace |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3306238A (en) * | 1965-05-20 | 1967-02-28 | Armco Steel Corp | Fuel injection system for blast furnaces |
| JPS5956495A (en) * | 1982-08-10 | 1984-03-31 | Kobe Steel Ltd | Equipment for crushing, drying and transporting powder fuel for blowing into blast furnace |
-
1990
- 1990-07-20 JP JP2190745A patent/JPH0742491B2/en not_active Expired - Lifetime
-
1991
- 1991-07-15 ZA ZA915501A patent/ZA915501B/en unknown
- 1991-07-16 AU AU80471/91A patent/AU8047191A/en not_active Abandoned
- 1991-07-18 EP EP91112059A patent/EP0467375A1/en not_active Withdrawn
- 1991-07-19 BR BR919103105A patent/BR9103105A/en not_active Application Discontinuation
- 1991-07-19 CA CA002047416A patent/CA2047416A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61111946U (en) * | 1984-12-26 | 1986-07-15 | ||
| JPS62123217A (en) * | 1985-11-22 | 1987-06-04 | Sumitomo Metal Ind Ltd | Drying of pulverized coal for blasting into blast furnace |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011522081A (en) * | 2008-06-02 | 2011-07-28 | ポール ヴルス エス．エイ． | Pulverized coal production method |
| US10059885B2 (en) | 2008-06-02 | 2018-08-28 | Paul Wurth S.A. | Method for producing pulverized coal |
| CN105651035A (en) * | 2016-02-29 | 2016-06-08 | 成都绿迪科技有限公司 | Peat drying device |
| JP2021105464A (en) * | 2019-12-26 | 2021-07-26 | 川崎重工業株式会社 | Coal crushing system |
| CN113457814A (en) * | 2021-06-22 | 2021-10-01 | 镇江市蓝火环保能源有限公司 | Coal powder treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| AU8047191A (en) | 1992-01-23 |
| JPH0742491B2 (en) | 1995-05-10 |
| CA2047416A1 (en) | 1992-01-21 |
| EP0467375A1 (en) | 1992-01-22 |
| BR9103105A (en) | 1992-05-05 |
| ZA915501B (en) | 1992-04-29 |
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