JPH044032B2 - - Google Patents
Info
- Publication number
- JPH044032B2 JPH044032B2 JP58228529A JP22852983A JPH044032B2 JP H044032 B2 JPH044032 B2 JP H044032B2 JP 58228529 A JP58228529 A JP 58228529A JP 22852983 A JP22852983 A JP 22852983A JP H044032 B2 JPH044032 B2 JP H044032B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- granulated
- flotation
- foaming agent
- amount
- 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.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 claims description 81
- 239000004088 foaming agent Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 22
- 238000005188 flotation Methods 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000008396 flotation agent Substances 0.000 claims description 10
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 7
- 238000004939 coking Methods 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 14
- 239000003077 lignite Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 5
- 230000003179 granulation Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002802 bituminous coal Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000003476 subbituminous coal Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 230000005653 Brownian motion process Effects 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- -1 polyoxypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229940116411 terpineol Drugs 0.000 description 1
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は微小造粒炭の製造方法に関し、より詳
細には100〜250μｍの微小造粒炭を浮選法により
回収する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for producing fine granulated coal, and more particularly to a method for recovering fine granulated coal of 100 to 250 μm by flotation.
従来、浮選法による石炭の選炭技術は、高石炭
化度瀝青炭からの製鉄用原料炭の選炭方法とし
て、商業的に完成されている。
BACKGROUND ART Conventionally, coal cleaning technology using a flotation method has been commercially completed as a method for preparing coking coal for steel manufacturing from high-grade bituminous coal.
しかしながら、石炭化度がより低い亜瀝青炭、
褐炭、亜炭等を含む所謂一般炭では、石炭化度の
低下に伴い親水性がより増大するので、浮選法に
よる回収効率が低く、又、フロスの灰分抱き込み
も多く、技術的には完成されていない。 However, subbituminous coal with a lower degree of coalification,
So-called steam coal, which includes brown coal, lignite, etc., becomes more hydrophilic as the degree of coalification decreases, so the recovery efficiency by flotation is low, and the floss traps a lot of ash, making it technically impossible to complete. It has not been.
すなわち、一般炭の200メツシユ・パス80％程
度の微粉に対する浮選法による選炭技術は、短期
的のもの、又は研究途上のものは多々あるが、経
済性を有する完成さた技術はいまだ存在しない。 In other words, there are many coal cleaning technologies using flotation methods that are short-term or are still under research, but there is still no complete technology that is economically viable. .
一方、一般炭の微粉に対する選炭技術として
は、経済性を考慮しなければ、所謂OA法（油凝
集法）がある。 On the other hand, the so-called OA method (oil agglomeration method) is a coal cleaning technology for fine powder of steam coal, unless economic efficiency is taken into account.
しかしながら、このOA法は炭質による差違は
あるが、純炭量に対して少なくとも20重量％の炭
化水素油をバインダーとして使用して微粉炭を凝
集、造粒する方法であり、径0.5〜３mmの造粒炭
が得られ、スラリー母液との分離性、粘土分の除
去性は良好ではあるが、高値な炭化水素油を多量
に使用するので、その時の油価格にもよるが、現
時点では経済性に乏しい。 However, this OA method is a method of agglomerating and granulating pulverized coal using at least 20% by weight of hydrocarbon oil as a binder based on the amount of pure coal, although there are differences depending on the carbon quality. Although granulated coal can be obtained and the separation from the slurry mother liquor and clay content removal properties are good, a large amount of expensive hydrocarbon oil is used, so it depends on the oil price at the time, but it is not economical at the moment. Poor.
又、もしもOA法において、バインダー量を削
減し、純炭分に対して10〜15重量％程度の油量に
して経済性を追及すると、造粒炭は100〜200μｍ
程度にしか造粒せず、通常のOA法において採用
されているスクリーン、篭型遠心脱水機等では分
離が困難、もしくは経済性を有する回収率は得ら
れなかつた。 In addition, if in the OA method, the amount of binder is reduced and the amount of oil is about 10 to 15% by weight based on the pure coal content to pursue economic efficiency, the granulated coal will be 100 to 200 μm thick.
It granulated only to a certain extent, and it was difficult to separate it using screens, cage-type centrifugal dehydrators, etc. used in normal OA methods, or it was not possible to obtain an economical recovery rate.
本発明は上記従来の問題点を解決すべくなされ
たものであり、微粉炭の造粒にバイダーとして使
用する炭化水素油の使用量を削減し、このバイン
ダー使用量削減の結果得られた微小な造粒炭を浮
選法によつてスラリー母液から分離して造粒炭製
造、回収の経済性を高めることを目的とする。
The present invention has been made to solve the above conventional problems, and reduces the amount of hydrocarbon oil used as a binder in granulating pulverized coal, and reduces the amount of fine particles obtained as a result of reducing the amount of binder used. The purpose is to separate granulated coal from slurry mother liquor by flotation to improve the economic efficiency of granulated coal production and recovery.
以下、本発明を第１図に示す実施例の工程図に
もとずき説明する。
Hereinafter, the present invention will be explained based on the process diagram of an embodiment shown in FIG.
まず、本発明においては、原料炭１を粉砕機２
で微粉砕し、得られた微粉炭３を混合槽４に供給
し、バインダー５および水６を加えて混合して微
粉炭の水スラリーを形成する。なお、この微粉炭
の水スラリーは、選炭工程のスクリーンアンダ
ー、例えば−0.5mmでも可能である。 First, in the present invention, the raw coal 1 is passed through the crusher 2.
The pulverized coal 3 obtained by pulverization is supplied to a mixing tank 4, and a binder 5 and water 6 are added and mixed to form a water slurry of pulverized coal. Note that this water slurry of pulverized coal can also be made under the screen of the coal cleaning process, for example, -0.5 mm.
原料炭としては、瀝青炭、亜瀝青炭、褐炭、亜
炭等炭質の如何にかかわらず使用することがで
き、又、粉砕度は従来のOA法におけると同様
に、200メツシユ以下の粒度分が70〜80重量％に
なるように粉砕される。 As coking coal, bituminous coal, sub-bituminous coal, lignite, lignite, etc. can be used regardless of its quality, and the grinding degree is the same as in the conventional OA method, where the particle size of 200 mesh or less is 70 to 80. % by weight.
粉砕機２の種類は、得られる微粉炭の粒度が上
記範囲内であれば、特に限定されず、従来使用さ
れている乾式粉砕機、又は湿式粉砕機を使用する
ことができる。 The type of pulverizer 2 is not particularly limited as long as the particle size of the pulverized coal to be obtained is within the above range, and conventionally used dry pulverizers or wet pulverizers can be used.
バイダー５も、従来のOA法におけると同様に
炭化水素油であり、具体的には原油、重油、軽油
などの石油系油、又は石炭の水添液化油中の上記
石油系油に対応する留分油である。 Binder 5 is also a hydrocarbon oil, as in the conventional OA method, and specifically, it is a petroleum-based oil such as crude oil, heavy oil, or light oil, or a distillate corresponding to the above-mentioned petroleum-based oil in hydrogenated liquefied coal oil. It is oil separation.
本発明における、かかるバインダーの添加量
は、原料炭の純炭量の５〜20重量％であり、より
経済性を考慮すれば好ましくは５〜15重量％であ
る。 In the present invention, the amount of the binder added is 5 to 20% by weight of the pure coal amount of raw coal, and preferably 5 to 15% by weight in consideration of economic efficiency.
バインダーの添加量が純炭量の５重量％に満た
ないと、スラリー中における石炭分と粘土分との
分離が不可能となり、又、20重量％を越えると、
安定した経済性が得られなくなるので好ましくな
い。 If the amount of binder added is less than 5% by weight of the pure coal amount, it will be impossible to separate the coal content and clay content in the slurry, and if it exceeds 20% by weight,
This is not preferable because stable economic efficiency cannot be obtained.
粉砕炭の水スラリーにおける固形物濃度は、20
〜40重量％であり、この濃度範囲内において適
宜、選定できる。 The solids concentration in the water slurry of pulverized coal is 20
~40% by weight, and can be selected as appropriate within this concentration range.
次に得られた微粉炭の水スラリーを造粒機７に
送り、微粉炭の脱灰、造粒を行う。 Next, the obtained water slurry of pulverized coal is sent to a granulator 7, where the pulverized coal is deashed and granulated.
造粒機７としては、例えば内部中心に撹拌翼を
有する横型円筒状の造粒機を挙げることが出来
る。 As the granulator 7, for example, a horizontal cylindrical granulator having a stirring blade at the center thereof can be used.
この造粒操作により、バインダーを含む微粉炭
は脱灰、造粒されるが、バインダーの添加量が通
常のOA法におけるよりも少ないので、通常では
径100〜250μｍ、好ましくは径100〜200μｍの微
小造粒炭を得る。 Through this granulation operation, the pulverized coal containing the binder is deashed and granulated, but since the amount of binder added is smaller than in the normal OA method, it is usually 100 to 250 μm in diameter, preferably 100 to 200 μm in diameter. Obtain fine granulated charcoal.
この微小造粒炭はスラリー母液中では混泥状で
あり、スタリー母液の水中に懸濁してスラリー状
を呈し、長時間放置すれば沈降する。 This fine granulated coal is in the form of a muddy slurry in the slurry mother liquor, and when suspended in water of the starry mother liquor, it takes on the form of a slurry, and if left for a long time, it will settle.
本発明においては、この微小造粒炭のスラリー
を、コンデイシヨナー８に供給し、好ましくは水
１０を更に添加して微小造粒炭の濃度を10〜15重
量％に調節する。この濃度調整は、後述する微小
造粒炭の浮選を容易にするためであり、必ずしも
必要とするものではない。 In the present invention, this slurry of finely granulated coal is supplied to a conditioner 8, and preferably water 10 is further added to adjust the concentration of finely granulated coal to 10 to 15% by weight. This concentration adjustment is to facilitate flotation of microgranulated coal, which will be described later, and is not necessarily necessary.
更に本発明においては、コンデンシヨナー８に
おいて、起泡剤、又は起泡剤を主成分とする浮選
剤９を微小造粒炭の水スラリーに加える。 Furthermore, in the present invention, in the condenser 8, a foaming agent or a flotation agent 9 containing a foaming agent as a main component is added to the water slurry of finely granulated coal.
ここで、起泡剤とは微小造粒炭の水スタリーを
発泡させるためのものであり、例えばパイン油、
テルピネオール、ポリオキシプロピレンアルキル
エーテル、高級アルコール等を挙げることができ
る。 Here, the foaming agent is used to foam the water starry of micro-granulated coal, such as pine oil,
Examples include terpineol, polyoxypropylene alkyl ether, and higher alcohols.
又、起泡剤を主成分とする浮選剤とは、上記の
ような起泡剤と補収剤、例えばケロシン等との混
合剤、又は起泡剤と起泡安定剤、例えばアルキロ
ールアミド等との混合剤を意味し、かかる補収剤
は微小造粒炭を凝集させる機能を有し、又、起泡
安定剤は泡を安定させる機能を有し、起泡剤のみ
を使用するか、又は起泡剤を主成分とする浮選剤
を使用するかは、原料とする石炭の炭質、灰分
量、微小造粒炭の粒子径等に応じて適宜、決定さ
れ、これら起泡剤、または起泡剤を主成分とする
浮選剤は、いずれも通常では市販品を使用するこ
とができる。 In addition, a flotation agent whose main component is a foaming agent is a mixture of the above-mentioned foaming agent and a scavenging agent such as kerosene, or a foaming agent and a foaming stabilizer such as an alkylolamide. This refers to a mixture with a foaming agent such as a foaming agent, which has the function of coagulating fine granulated coal, and a foaming stabilizer has a function of stabilizing foam. Whether to use a flotation agent whose main component is a foaming agent or a foaming agent is determined as appropriate depending on the carbon quality of the raw material coal, the ash content, the particle size of the finely granulated coal, etc. Alternatively, a commercially available flotation agent whose main component is a foaming agent can be used.
本発明における、起泡剤、又は起泡剤を主成分
とする浮選剤の使用量は、微小造粒炭重量の100
〜200ppmであり、起泡剤を主成分とする浮選剤
における補収剤、又は起泡安定剤の量は起泡剤量
の20〜30重量％である。 In the present invention, the amount of foaming agent or flotation agent mainly composed of foaming agent is 100% of the weight of fine granulated coal.
~200 ppm, and the amount of scavenger or foam stabilizer in a flotation agent based on a foaming agent is 20 to 30% by weight of the amount of foaming agent.
起泡剤または起泡剤を主成分とする浮選剤の使
用量が造粒重量の100ppmに満たないと、泡立ち
が十分でなく、微小造粒炭の浮選、回収が不完全
となり、又、200ppmを越えると、経済性が問題
となるのでとなるので好ましくない。 If the amount of foaming agent or flotation agent containing foaming agent as its main component is less than 100 ppm of the granulation weight, foaming will not be sufficient, flotation and recovery of fine granulated coal will be incomplete, or If it exceeds 200 ppm, economic efficiency becomes a problem, which is not preferable.
コンデイシヨナー８において、上記のような調
整をした後に、この調整物を浮選機１１に供給
し、微小造粒炭の浮選を行う。 After making the above-mentioned adjustments in the conditioner 8, the adjusted product is supplied to the flotation machine 11, where fine granulated coal is flotated.
即ち、微小造粒炭１２は添加されたバインダー
によつて石炭単独の場合よりも相対的に疎水性に
なつているので、起泡剤または起泡剤を主成分と
する浮選剤により生じた気泡に付着して水面に浮
上し、一方、石炭中の灰分１３は炭素分よりも親
水性なので浮上せずに沈降する。 In other words, the fine granulated coal 12 has become relatively hydrophobic due to the added binder than the coal alone, so that it has been generated by a foaming agent or a flotation agent whose main component is a foaming agent. The coal adheres to air bubbles and floats to the surface of the water, while the ash 13 in the coal is more hydrophilic than the carbon content, so it settles without floating.
最後に浮上した微小造粒炭１３を、通常の浮選
法におけるようにして浮選機により補集すれば、
灰分量の少ない微小造粒炭１４を得ることがてで
きる。 If the finally floated fine granulated coal 13 is collected by a flotation machine as in the normal flotation method,
Finely granulated coal 14 with a low ash content can be obtained.
得られた微小造粒炭は、ボイラー、発電所等の
燃料として好適に用いることができる。 The obtained finely granulated coal can be suitably used as fuel for boilers, power plants, etc.
以上述べたように本発明では、炭化水素油の使
用量を造粒炭に疎水性を付与できる程度の量に削
減すると共に、炭化水素油の削減による造粒の困
難さを造粒機を積極的に使用することによつて打
ち消している。
As described above, in the present invention, the amount of hydrocarbon oil used is reduced to an amount that can impart hydrophobicity to granulated coal, and the granulation machine is actively used to reduce the difficulty of granulation due to the reduction of hydrocarbon oil. It is counteracted by using it.
従つて、炭化水素油の使用量を大幅に削減する
ことができ、造粒炭製造の経済性を著しく高める
ことができる。 Therefore, the amount of hydrocarbon oil used can be significantly reduced, and the economic efficiency of producing granulated coal can be significantly improved.
また造粒機を積極的に使用することは、原料炭
中の石炭分と灰分との物理的、機械的分離を促進
し、最終的に浮選によつて得られる本発明におけ
る微小造粒炭の灰分含有率を低下らせることがで
きる利点もある。 In addition, the active use of a granulator promotes the physical and mechanical separation of the coal content and ash content in coking coal, and ultimately the fine granulated coal in the present invention obtained by flotation. Another advantage is that it can reduce the ash content of.
更に本発明では、微小造粒炭を起泡剤、または
起泡剤を主成分とする浮選剤を用い、バインダー
によつて疎水性となつている微小造粒炭を気泡と
共に浮上させるので、従来の所謂OA法では分離
不可能であつた微小造粒炭と灰分を物理的に容易
に分離することができる。 Furthermore, in the present invention, the fine granulated coal is made to float together with air bubbles by using a foaming agent or a flotation agent whose main component is a foaming agent, and the fine granulated carbon is made hydrophobic by the binder. Fine granulated coal and ash, which were impossible to separate using the conventional OA method, can be physically separated easily.
また本発明では、造粒機を使用するので微粉炭
は遠心力によつて強固に固まり、かつ転動造粒が
行われるので、丸くて硬い径100〜250μｍの微細
な造粒炭が形成される。この径範囲は、浮選によ
り微小造粒炭を回収するのに最も好ましい範囲で
あり、径がこの範囲を越えると粒子が大きすぎて
浮選回収が困難になり、一方、径がこの範囲に満
たないと粒子のブラウン運動その他の作用によつ
て浮選回収が同様に困難になる。 In addition, in the present invention, since a granulator is used, the pulverized coal is solidified by centrifugal force, and since rolling granulation is performed, fine granulated coal with a round, hard diameter of 100 to 250 μm is formed. Ru. This diameter range is the most preferable range for recovering fine granulated coal by flotation; if the diameter exceeds this range, the particles will be too large to be recovered by flotation; If this is not achieved, flotation recovery becomes similarly difficult due to Brownian motion of particles and other effects.
更に本発明の方法は炭種を選ばず、広くすべて
の石炭を処理することができる。即ち従来のOA
法によつても、純炭分に対して20〜30重量％のバ
インダーを使用してもせいぜい500μｍ程度にし
か造粒できず、分離困難であつた亜瀝青炭、褐
炭、亜炭を瀝青炭の場合と同様に浮遊選炭するこ
とができる。 Furthermore, the method of the present invention can treat a wide variety of coals regardless of coal type. That is, conventional OA
Even with this method, even if 20 to 30% by weight of binder was used based on the pure coal content, it could only be granulated to a particle size of about 500 μm at most, and it was difficult to separate subbituminous coal, lignite, and lignite from bituminous coal. It can likewise be flotated.
更に又、本発明の方法は、選炭に特別の装置を
必要とせず、従来から用いられている浮選装置が
そのまま使用でき、かつ上記のように原料となる
石炭の炭種を選ばないのでるので、更に経済的に
有利であり、工業的価値は極めて大きい。 Furthermore, the method of the present invention does not require any special equipment for coal preparation; conventional flotation equipment can be used as is, and as mentioned above, the type of coal used as the raw material is not selected. Therefore, it is economically advantageous and has extremely large industrial value.
以下、本発明の実施例をのべる。 Examples of the present invention will be described below.
原料とした石炭（灰分28％）の純炭分に対して
７重量％のＣ重油を添加し、OA法製造工程を施
し、原スラリー中に生成した44〜149μｍの微小
造粒炭を150ppmの起泡剤（高級アルコール系）
を用いて浮選し、純炭分回収率96％でクリーンコ
ール（灰分8.3％）を回収した。
7% by weight of C heavy oil is added to the pure coal content of the raw material coal (ash content 28%), and the OA manufacturing process is applied to the fine granulated coal of 44 to 149 μm produced in the raw slurry to a concentration of 150 ppm. Foaming agent (higher alcohol type)
Clean coal (ash content: 8.3%) was recovered with a pure coal recovery rate of 96%.
第１図は本発明の実施例を示す工程図である。
１……原料となる石炭、２……粉砕機、５……
バインダー、７……造粒機、８……コンデイシヨ
ナー、１１……浮選機。
FIG. 1 is a process diagram showing an embodiment of the present invention. 1...Coal as raw material, 2...Crusher, 5...
Binder, 7... Granulator, 8... Conditioner, 11... Flotation machine.
Claims (1)
重量％の微粉炭に粉砕し、該微粉炭を水および前
記原料炭の純炭量の５〜20重量％の炭化水素油と
混合して該微粉炭の水スラリーを製造し、該微粉
炭の水スラリーから造粒機を用いて径100〜250μ
ｍの微小造粒炭の水スラリーを製造し、該微小造
粒炭の水スラリーに該微小造粒炭に対して100〜
200ppmの起泡剤、または該起泡剤を主成分とす
る浮選剤を添加して該微小造粒炭を浮上せしめ、
この浮上した微小造粒炭を回収することを特徴と
する微小造粒炭の浮選回収方法。1 Particle size of coking coal less than 200 mesh is 70-80
% by weight of pulverized coal, and mixes the pulverized coal with water and hydrocarbon oil of 5 to 20% by weight of the pure coal amount of the raw coal to produce a water slurry of the pulverized coal; Diameter 100~250μ using a granulator from water slurry
A water slurry of micro-granulated coal of m is produced, and the water slurry of micro-granulated coal contains 100 to
Adding 200 ppm of a foaming agent or a flotation agent containing the foaming agent as a main component to float the fine granulated coal,
A method for flotation and recovery of micro-granulated coal, characterized by recovering the floated micro-granulated coal.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58228529A JPS60122065A (en) | 1983-12-05 | 1983-12-05 | Method for recovering fine granulated coal by floatation |
| AU27599/84A AU573584B2 (en) | 1983-12-05 | 1984-05-02 | Recovery of fine coal by flotation |
| CA000453572A CA1256601A (en) | 1983-12-05 | 1984-05-04 | Method for recovering fine granulated coal by flotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58228529A JPS60122065A (en) | 1983-12-05 | 1983-12-05 | Method for recovering fine granulated coal by floatation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60122065A JPS60122065A (en) | 1985-06-29 |
| JPH044032B2 true JPH044032B2 (en) | 1992-01-27 |
Family
ID=16877837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58228529A Granted JPS60122065A (en) | 1983-12-05 | 1983-12-05 | Method for recovering fine granulated coal by floatation |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS60122065A (en) |
| AU (1) | AU573584B2 (en) |
| CA (1) | CA1256601A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605420A (en) * | 1984-07-02 | 1986-08-12 | Sohio Alternate Energy Development Company | Method for the beneficiation of oxidized coal |
| JPS61103992A (en) * | 1984-10-26 | 1986-05-22 | Tokyo Electric Power Co Inc:The | Deashing recovery of coal |
| CN102773153B (en) * | 2012-07-16 | 2013-08-21 | 中国矿业大学 | Lignite separation process |
| CN104815748B (en) * | 2015-04-26 | 2017-06-20 | 中国矿业大学 | The broken mill floatation process of two sections of coal in a kind of coking |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5785891A (en) * | 1980-11-18 | 1982-05-28 | Hitachi Ltd | Method for deashing coal |
| JPS59127660A (en) * | 1983-01-07 | 1984-07-23 | Kawasaki Heavy Ind Ltd | Treatment of coal ash and low grade coal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270926A (en) * | 1979-06-19 | 1981-06-02 | Atlantic Richfield Company | Process for removal of sulfur and ash from coal |
| US4340467A (en) * | 1980-03-20 | 1982-07-20 | American Cyanamid Company | Flotation of coal with latex emulsions of hydrocarbon animal or vegetable based oil |
| AU542958B2 (en) * | 1981-12-04 | 1985-03-28 | Dow Chemical Company, The | Froth flotation of coal |
-
1983
- 1983-12-05 JP JP58228529A patent/JPS60122065A/en active Granted
-
1984
- 1984-05-02 AU AU27599/84A patent/AU573584B2/en not_active Expired
- 1984-05-04 CA CA000453572A patent/CA1256601A/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5785891A (en) * | 1980-11-18 | 1982-05-28 | Hitachi Ltd | Method for deashing coal |
| JPS59127660A (en) * | 1983-01-07 | 1984-07-23 | Kawasaki Heavy Ind Ltd | Treatment of coal ash and low grade coal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60122065A (en) | 1985-06-29 |
| AU2759984A (en) | 1985-06-13 |
| CA1256601A (en) | 1989-06-27 |
| AU573584B2 (en) | 1988-06-16 |
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