JPH0552879B2 - - Google Patents
Info
- Publication number
- JPH0552879B2 JPH0552879B2 JP26578784A JP26578784A JPH0552879B2 JP H0552879 B2 JPH0552879 B2 JP H0552879B2 JP 26578784 A JP26578784 A JP 26578784A JP 26578784 A JP26578784 A JP 26578784A JP H0552879 B2 JPH0552879 B2 JP H0552879B2
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- coal
- water
- coarse
- concentration
- 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 - Fee Related
Links
- 239000002002 slurry Substances 0.000 claims description 252
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 80
- 239000003245 coal Substances 0.000 claims description 63
- 238000000227 grinding Methods 0.000 claims description 49
- 239000000654 additive Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 23
- 239000011882 ultra-fine particle Substances 0.000 claims description 18
- 238000010298 pulverizing process Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims 1
- 239000011362 coarse particle Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 20
- 230000032258 transport Effects 0.000 description 13
- 238000010790 dilution Methods 0.000 description 12
- 239000012895 dilution Substances 0.000 description 12
- 238000003860 storage Methods 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 239000008400 supply water Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 7
- 238000005054 agglomeration Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000007796 conventional method 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
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
Landscapes
- Liquid Carbonaceous Fuels (AREA)
- Air Transport Of Granular Materials (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高濃度石炭水スラリの製造方法におい
て、スラリの性状の良好にするための製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a highly concentrated coal-water slurry for improving the properties of the slurry.
高濃度石炭水スラリとは、微粉砕した石炭60〜
90重量％と水10〜40重量％とに若干の添加剤を加
えた混合物で、脱水を行なうことなくそのままボ
イラ等で燃焼可能な流体燃料のことであり、固体
燃料である石炭を流体化することにより利用範囲
を飛躍的に拡大するものである。なお、以下石炭
水スラリを単にスラリと略記する。
High concentration coal water slurry is finely ground coal 60~
It is a mixture of 90% by weight and 10-40% by weight of water with some additives, and is a fluid fuel that can be burned as is in a boiler etc. without dehydration, and it converts coal, which is a solid fuel, into a fluid. This dramatically expands the scope of use. In addition, the coal water slurry will be simply abbreviated as slurry below.
従来、高濃度スラリの製造法には、大別して乾
式法、高濃度湿式法及び低濃度湿式法の３種類が
あつた。 Conventionally, methods for producing high-concentration slurry can be roughly divided into three types: dry method, high-concentration wet method, and low-concentration wet method.
乾式法はミルを使用し空気中で石炭を微粉砕し
た後、これを水及び添加剤と一緒に混合・撹拌
（以下混合撹拌と記す）して高濃度スラリとする
ものである。 In the dry method, coal is pulverized in air using a mill, and then mixed and stirred (hereinafter referred to as mixing and stirring) with water and additives to form a highly concentrated slurry.
また、高濃度湿式法はチユーブミルに石炭、水
及び添加剤を同時に投入し、微粉砕と混合撹拌を
同時に行なうものである。 Further, in the high concentration wet method, coal, water and additives are simultaneously charged into a tube mill, and pulverization and mixing and stirring are performed at the same time.
さらに、低濃度湿式法はチユーブミルに石炭と
水とを投入して低濃度で微粉砕し、いつたん石炭
20〜60重量％と水40〜80重量％の低濃度スラリと
したのち、これを脱水機にて脱水して脱水ケーキ
とし、これを混合撹拌機内において改めて少量の
調整水と添加剤と一緒に混合撹拌して高濃度スラ
リとするものである。 Furthermore, the low concentration wet method involves putting coal and water into a tube mill and pulverizing it at a low concentration.
After making a low-concentration slurry of 20 to 60% by weight and 40 to 80% by weight of water, this is dehydrated in a dehydrator to form a dehydrated cake, which is again mixed with a small amount of adjusted water and additives in a mixer. It is mixed and stirred to form a highly concentrated slurry.
第１２図に図示するものは、従来の低濃度湿式
高濃度スラリの製造方法に関するフローシートで
ある。第１２図において、ａは石炭の供給用貯留
槽、ｂは石炭の供給ライン、ｃはミル供給水用の
タンク、ｄはミル供給水の供給ライン、ｅは湿式
ミル、ｆは湿式ミルｅで得られた低濃度スラリの
輸送ライン、ｇは脱水機、ｈは脱水機ｇで脱水し
て得られる脱水水を排水するライン、ｉは脱水機
ｇで脱水して得られたスラリ（以下脱水ケーキと
記す）の輸送ライン、ｊは混合撹拌機ｋは混合撹
拌機ｊに調整水の供給ラインｌを介して調整水を
供給する調整水用のタンク、ｍは混合撹拌機ｊに
添加剤の供給ラインｎを介し添加剤を供給する添
加剤用のタンク、ｏは製品である高濃度スラリの
輸送ライン、ｐは製品である高濃度スラリの貯蔵
タンク又はボイラ等の燃焼手段等（以下製品スラ
リ用タンクと記す）である。 What is illustrated in FIG. 12 is a flow sheet relating to a conventional method for producing a low-concentration wet high-concentration slurry. In Figure 12, a is a coal supply storage tank, b is a coal supply line, c is a mill supply water tank, d is a mill supply water supply line, e is a wet mill, and f is a wet mill e. A transportation line for the obtained low concentration slurry, g is a dehydrator, h is a line for draining the dehydrated water obtained by dehydrating in dehydrator g, and i is a slurry obtained by dehydrating in dehydrator g (hereinafter referred to as dehydrated cake). j is a mixing agitator k is a tank for conditioning water that supplies conditioning water to a mixing agitator j via a conditioning water supply line l, m is a supply of additives to a mixing agitator j A tank for additives that supplies additives via line n, o is a transport line for high concentration slurry as a product, and p is a storage tank for high concentration slurry as a product or a combustion means such as a boiler (hereinafter referred to as a tank for product slurry). tank).
このようなフローシートにおいて、貯留槽ａ及
びタンクｃからラインｂ及びｄを介して石炭及び
ミル供給水を湿式ミルｅに供給し、低濃度で粗粉
砕処理して低濃度スラリを作る。この低濃度スラ
リをラインｆによつて脱水機ｇへ供給する。脱水
機ｇでは低濃度スラリを脱水し、脱水水はライン
ｈから排水し、脱水ケーキはラインｉを介して混
合撹拌機ｊに供給する。この混合撹拌機ｊでは供
給されてきた脱水ケーキにタンクｋ及びｍからラ
インｌ及びｎを介して供給される調整水及び添加
剤を一緒に混合撹拌して粘性の低い高濃度スラリ
に調整し製品として高濃度スラリのラインｏから
製品スラリ用タンクｐに供給する。 In such a flow sheet, coal and mill supply water are supplied from storage tank a and tank c to wet mill e through lines b and d, and coarsely pulverized at a low concentration to produce a low concentration slurry. This low concentration slurry is supplied to the dehydrator g via line f. In the dehydrator g, the low concentration slurry is dehydrated, the dehydrated water is drained from the line h, and the dehydrated cake is supplied to the mixer j through the line i. This mixer j mixes and stirs the supplied dehydrated cake with the conditioning water and additives supplied from tanks k and m via lines l and n to form a highly concentrated slurry with low viscosity. The slurry is supplied from the high concentration slurry line o to the product slurry tank p.
このような従来の低濃度湿式法高濃度スラリの
製造方法において、混合撹拌機ｊからラインｏを
介して製品として出て来る高濃度スラリは、湿式
ミルｅで石炭を粗粉砕するのみであるので石灰粒
の形状は角ばつており、したがつて添加剤と混合
撹拌した場合、添加剤がうまく分散しなかつた。
このため、添加剤の効果が充分に発揮できず、ま
た粘度の低い高濃度スラリを得ることが出来なか
つた。
In such a conventional low-concentration wet method high-concentration slurry manufacturing method, the high-concentration slurry that comes out as a product from the mixer j through the line o is obtained by simply coarsely pulverizing the coal in the wet mill e. The shape of the lime particles is angular, so when mixed with additives and stirred, the additives were not well dispersed.
For this reason, the effects of the additives could not be fully exhibited, and a highly concentrated slurry with low viscosity could not be obtained.
また、湿式ミルｅで石炭を粗粉砕するのみであ
るので、微小又は超微小石炭粒は少量しか生成さ
れなかつた。したがつて、従来の高濃度スラリ中
にも微小又は超微小石炭粒が少量しか含まれてお
らず、そのため高濃度スラリのレオロジー特性は
ダイラタントとなり貯蔵安定性が劣るという欠点
があつた。 Furthermore, since the wet mill e only coarsely pulverizes the coal, only a small amount of fine or ultrafine coal particles were produced. Therefore, conventional high-concentration slurries contain only a small amount of fine or ultra-fine coal particles, and therefore the rheological properties of high-concentration slurries are dilatant, resulting in poor storage stability.
さらに、高濃度スラリのレオロジー特性を擬塑
性とし、貯蔵安定性を向上させるために何らかの
方法でミルｅ内において微小又は超微小石炭粒を
生成させたとしても、低濃度スラリ中に微小又は
超微小石炭粒が多量に含まれる場合には脱水機の
脱水性能が著しく低下し、脱水ケーキ中の水分が
増加し、したがつて出来上がつた高濃度スラリの
濃度が低下するという欠点があつた。 Furthermore, even if fine or ultra-fine coal particles are generated in mill e by some method to make the rheological properties of high-concentration slurry pseudoplastic and improve storage stability, fine or ultra-fine coal particles in low-concentration slurry If a large amount of fine coal particles are included, the dehydration performance of the dehydrator will be significantly reduced, the moisture content in the dehydrated cake will increase, and the concentration of the resulting high-concentration slurry will decrease. Ta.
さらにまた、従来の低濃度湿式法高濃度スラリ
の製造方法においては、混合撹拌機ｊからライン
ｏを介して製品として出て来る高濃度スラリには
バラツキすなわち品質の不均一性の問題があり、
その結果、ボイラ等で使用した場合に燃焼状態が
マチマチになる可能性があつた。 Furthermore, in the conventional low-concentration wet method for producing high-concentration slurry, there is a problem in that the high-concentration slurry that comes out as a product from mixer j through line o has variations, that is, non-uniformity in quality.
As a result, when used in a boiler or the like, there was a possibility that the combustion state would be inconsistent.
本発明は、上記する従来の低濃度湿式高濃度ス
ラリの製造方法の諸問題点を解消し、粘性の低い
均一性のある良質の高濃度スラリを得ることを目
的とするものである。 The object of the present invention is to solve the problems of the conventional low-concentration wet high-concentration slurry manufacturing method described above, and to obtain a high-quality high-concentration slurry with low viscosity and uniformity.
本願第１の発明は、石炭を水中で粗粉砕ミルに
よつて湿式粗粉砕して低濃度石炭水スラリを作
り、ついで上記低濃度石炭水スラリを脱水し、得
られる脱水ケーキをスラリ調整槽に導き、同スラ
リ調整槽で供給される調整水、添加剤及び上記脱
水ケーキを、返送されてくる返送超微小粒含有ス
ラリとともに混合・撹拌しながら調整し、ついで
上記スラリ調整槽で得られる調整高濃度石炭水ス
ラリを製品として供給しかつ上記調整高濃度石炭
水スラリの１部を超微粉砕ミルに導き、同超微粉
砕ミルで上記調整高濃度石灰水スラリの石炭粒を
超微粉砕しながら摩砕して超微小粒含有スラリと
したのち上記スラリ調整槽に返送循環させること
を特徴とする高濃度石炭水スラリの製造方法であ
る。
The first invention of the present application is to produce a low-concentration coal-water slurry by wet-coarsely pulverizing coal in water using a coarse-pulverizing mill, then dewatering the low-concentration coal-water slurry, and placing the resulting dehydrated cake in a slurry adjustment tank. The adjusted water, additives, and the dehydrated cake supplied in the slurry adjustment tank are mixed and stirred together with the returned slurry containing ultrafine particles, and then the adjusted height obtained in the slurry adjustment tank is adjusted. A concentrated coal water slurry is supplied as a product, and a part of the adjusted highly concentrated coal water slurry is introduced into an ultra-fine pulverizing mill, while the coal particles of the adjusted highly concentrated lime water slurry are ultrafinely pulverized in the ultra fine pulverizing mill. This is a method for producing a highly concentrated coal-water slurry, which comprises grinding the slurry to obtain a slurry containing ultrafine particles, and then circulating the slurry back to the slurry adjustment tank.
本願第１の発明の方法では、まず粗粉砕ミルに
石炭と水とを供給して粗粉砕処理し水分の多い低
濃度スラリを作る。この低濃度スラリは水分が多
く、このままではボイラ等での燃焼効率に悪影響
を与えるのでそれを防止するため、またスラリ調
整槽で得られるスラリの水分濃度を均一化するた
めに脱水する。この脱水して得られる脱水ケーキ
をスラリ調整槽に導く。スラリ調整槽には、スラ
リの水分濃度調整のための調整水、添加剤及び上
記脱水ケーキと、超微粉砕ミルで作られた超微小
粒含有スラリとを一緒に混合撹拌しながら調整し
て調整高濃度スラリを得る。この調整高濃度スラ
リは製品として供給する一方、その１部は上記超
微粉砕ミルに供給し調整高濃度スラリに含有され
ている石炭粒を超微粉砕しながら摩砕して丸味の
ある超微小の石炭粒を作つて再度上記スラリ調整
槽に返送させながら均一性のある良質の製品を作
る。 In the method of the first invention of the present application, coal and water are first supplied to a coarse grinding mill and subjected to coarse grinding to produce a low-concentration slurry with a high moisture content. This low-concentration slurry contains a lot of water, and if left as it is, it will adversely affect the combustion efficiency in a boiler or the like, so it is dehydrated to prevent this and to equalize the water concentration of the slurry obtained in the slurry adjustment tank. The dehydrated cake obtained by this dehydration is led to a slurry adjustment tank. In the slurry adjustment tank, adjustment water for adjusting the water concentration of the slurry, additives, and the above-mentioned dehydrated cake are mixed together with a slurry containing ultrafine particles made by an ultrafine grinding mill and adjusted while stirring. Obtain a highly concentrated slurry. While this adjusted high-concentration slurry is supplied as a product, a portion of it is supplied to the ultra-fine grinding mill, where the coal grains contained in the adjusted high-concentration slurry are ground into ultra-fine particles with a rounded appearance. By making small coal grains and returning them to the slurry adjustment tank, a uniform and high quality product is produced.
次に、本願第２の発明は上記第１の発明をさら
に改良するためになされたものである。すなわち
本願第２の発明は第１の発明の方法に加えて、脱
水機から得られる脱水ケーキをスリラ調整槽に導
く前に塊砕装置又はトルク均等型塊砕装置で微小
な脱水ケーキに塊砕することを特徴とするもので
ある。 Next, the second invention of the present application has been made to further improve the first invention. That is, the second invention of the present application, in addition to the method of the first invention, crushes the dehydrated cake obtained from the dehydrator into minute dehydrated cakes using a crusher or a torque equalization type crusher before introducing the dehydrated cake to the sriller adjustment tank. It is characterized by:
次に、本願第３の発明は上記第１の発明をさら
に改良するためになされたものである。すなわち
本願第３の発明は第１の発明の方法に加えて、粗
粉砕ミルから得られる低濃度スラリを脱水機に導
く前に、分級器により粗粒を含む低濃度スラリ
（以下、粗粒含有低濃度スラリと記す）と粗粒が
除去された低濃度スラリ（以下、粗粒カツト低濃
度スラリと記す）とに分級し、粗粒カツト低濃度
スラリのみを脱水機に導くことを特徴とするもの
である。なお、粗粒含有低濃度スラリは粗粉粒ミ
ルに返送してもよい。 Next, the third invention of the present application has been made to further improve the first invention. In other words, in addition to the method of the first invention, the third invention of the present application is that before introducing the low concentration slurry obtained from the coarse grinding mill to the dehydrator, the low concentration slurry containing coarse particles (hereinafter referred to as coarse particle containing slurry) is processed using a classifier. The slurry is classified into a low concentration slurry from which coarse particles have been removed (hereinafter referred to as coarse cut low concentration slurry), and only the coarse cut low concentration slurry is led to the dehydrator. It is something. Note that the coarse grain-containing low concentration slurry may be returned to the coarse grain mill.
次に、本願第４の発明は第２及び第３の発明が
有する効果の相乗効果により、さらに良質の製品
高濃度スラリを得る目的でなされたものである。
すなわち本願第４の発明は、本願第１の発明の方
法に加えて、粗粉砕ミルから得られる低濃度スラ
リを脱水機に導く前に分級器で粗粒含有低濃度ス
ラリと粗粒カツト低濃度スラリとに分級し、粗粒
カツト低濃度スラリのみを脱水機に導き、かつ、
脱水機から得られる粗粒カツト脱水ケーキをスラ
リ調整槽に導く前に塊砕装置又はトルク均等型塊
砕装置で微小な脱水ケーキを塊砕することを特徴
とするものである。この場合も、粗粒含有低濃度
スラリを粗粉砕ミルに返送してもよい。 Next, the fourth invention of the present application has been made for the purpose of obtaining a high-concentration product slurry of even better quality by the synergistic effect of the effects of the second and third inventions.
In other words, the fourth invention of the present application, in addition to the method of the first invention of the present application, uses a classifier to separate the low concentration slurry containing coarse grains and the low concentration coarse grain cuts before introducing the low concentration slurry obtained from the coarse grinding mill to the dehydrator. The slurry is separated into coarse cut and low concentration slurry, and only the coarse cut and low concentration slurry is led to the dehydrator, and
This method is characterized in that, before introducing the coarse cut dehydrated cake obtained from the dehydrator to the slurry adjustment tank, fine dehydrated cakes are crushed using a crusher or a torque equalization type crusher. In this case as well, the low concentration slurry containing coarse particles may be returned to the coarse grinding mill.
次に、本願第５の発明は上記第３の発明をさら
に改良するためになされたものである。すなわち
本願第５の発明は第１の発明の方法に加えて、粗
粉砕ミルから得られる低濃度スラリを分級器に導
く前に希釈水にて希釈したのち、この希釈低濃度
スラリを分級器に導き、かつ分級器により得られ
る粗粒カツト希釈低濃度スラリのみを脱水機に導
くことを特徴とするものである。なおこの場合
も、分級器から得られる粗粒含有希釈低濃度スラ
リについては、粗粉砕ミルに返送してもよい。 Next, the fifth invention of the present application has been made to further improve the third invention. That is, the fifth invention of the present application, in addition to the method of the first invention, dilutes the low concentration slurry obtained from the coarse grinding mill with dilution water before introducing it to the classifier, and then passes this diluted low concentration slurry into the classifier. The method is characterized in that only the coarse cut diluted low-concentration slurry obtained by the classifier is led to the dehydrator. In this case as well, the diluted low concentration slurry containing coarse particles obtained from the classifier may be returned to the coarse grinding mill.
次に、本願第６の発明は上記第１乃至第５の発
明をさらに改良するためになされたものである。
すなわち本願第６の発明は第１の発明の方法に加
えて、粗粉砕ミルより得られる低濃度スラリを希
釈水にて希釈したのち、分級器により分級して得
られる粗粒カツト希釈低濃度スラリのみを脱水機
に導き、かつ脱水機から得られる粗粒カツト脱水
ケーキをスラリ調整槽に導く前に塊砕装置又はト
ルク均等型塊砕装置で微小な脱水ケーキに塊砕す
ることを特徴とするものである。この場合も、分
級器より得られる粗粒含有希釈低濃度スラリにつ
いては、粗粉砕ミルに返送してもよい。 Next, the sixth invention of the present application has been made in order to further improve the above-mentioned first to fifth inventions.
That is, the sixth invention of the present application, in addition to the method of the first invention, dilutes the low concentration slurry obtained from a coarse grinding mill with dilution water, and then classifies it with a classifier to obtain a coarse cut diluted low concentration slurry. The coarse cut dehydrated cake obtained from the dehydrator is crushed into minute dehydrated cakes using a crusher or a torque equalization type crusher before being introduced to a slurry adjustment tank. It is something. In this case as well, the diluted low concentration slurry containing coarse particles obtained from the classifier may be returned to the coarse grinding mill.
以上述べた本願第１乃至第６の発明の方法のい
ずれによつても、粒性の低い均一性のある良質の
高濃度石炭水スラリを得ることができる。 By any of the methods of the first to sixth inventions of the present application described above, it is possible to obtain a high-quality, highly concentrated coal-water slurry with low graininess and uniformity.
以下、本発明の実施例を第１図〜第１１図を参
照して説明する。
Embodiments of the present invention will be described below with reference to FIGS. 1 to 11.
実施例 １
以下、本願第１の発明の好ましい実施例を第１
図に示すフローシートを参照して説明する。Example 1 Hereinafter, a preferred embodiment of the first invention of the present application will be described as a first example.
This will be explained with reference to the flow sheet shown in the figure.
第１図において、１は石炭の供給貯留槽、２は
石炭の供給ライン、３は粗粉砕湿式ミル供給水用
のタンク、４は粗粉砕湿式ミル供給水（以下粗粉
砕ミル供給水と記す）の供給ライン、５は粗粉砕
湿式ミル（以下粗粉砕ミルと記す）、６は粗粉砕
ミル５で得られる低濃度スラリの輸送ライン、７
は脱水機、８は脱水機７で得られる脱水水の排水
ライン、９は脱水機７で得られる脱水ケーキの輸
送ライン、１０はスラリ調整槽又は混合撹拌機
（以下スラリ調整槽で代表する）、１１はスラリ調
整槽１０のスラリの水分濃度を調整するために供
給する水（以下調整水と記す）を貯蔵する調整水
用タンク、１２は調整水の供給ライン、１３はス
ラリ調整槽１０に供給する界面活性剤などの添加
剤（以下添加剤と記す）を貯蔵するタンク（以下
添加剤用タンクと記す）、１４は添加剤の供給ラ
イン、１５はスラリ調整槽１０で調整された高濃
度スラリ（以下調整高濃度スラリと記す）の輸送
ライン、１６は調整高濃度スラリの分配器、１７
は調整高濃度スラリの１部（以下返送調整高濃度
スラリと記す）の返送循環ライン、１８は超微粉
砕ミル、１９は超微粉砕ミル１８のスラリの水分
濃度を調整するために供給される水（以下超微粉
砕ミル調整水と記す）を貯蔵するミル調整水用の
タンク、２０は超微粉砕ミル調整水の供給ライ
ン、２１は超微粉砕ミル１８に供給する界面活性
剤などの添加剤（以下超微粉砕ミル添加剤と記
す）を貯蔵するミル添加剤用タンク、２２は超微
粉砕ミル添加剤の供給ライン、２３は超微粉砕ミ
ル１８で得られた超微小粒含有スラリの返送循環
ライン、２４は製品として又は次の工程へ供給さ
れる高品質の高濃度スラリ（以下製品高濃度スラ
リと記す）の輸送ライン、２５は製品として又は
次の工程へ供給される高品質の高濃度スラリを貯
留するタンク（以下製品高濃度スラリ用タンクと
記す）である。なお、ライン２４は図示省略のボ
イラ等の燃焼手段に直接連結されることもある。
ただし、この事についての説明は以下同様なので
省略する。 In Figure 1, 1 is a coal supply storage tank, 2 is a coal supply line, 3 is a tank for coarse grinding wet mill supply water, and 4 is coarse grinding wet mill supply water (hereinafter referred to as coarse grinding mill supply water). 5 is a coarse grinding wet mill (hereinafter referred to as coarse grinding mill); 6 is a transport line for the low concentration slurry obtained in the coarse grinding mill 5;
is a dehydrator, 8 is a drainage line for the dehydrated water obtained in the dehydrator 7, 9 is a transport line for the dehydrated cake obtained in the dehydrator 7, and 10 is a slurry adjustment tank or mixing agitator (hereinafter referred to as the slurry adjustment tank) , 11 is an adjustment water tank for storing water (hereinafter referred to as adjustment water) to be supplied to adjust the water concentration of the slurry in the slurry adjustment tank 10, 12 is a adjustment water supply line, and 13 is a tank for supplying the slurry to the slurry adjustment tank 10. A tank (hereinafter referred to as an additive tank) for storing additives such as surfactants (hereinafter referred to as additives) to be supplied; 14 is an additive supply line; 15 is a high concentration adjusted in a slurry adjustment tank 10; A transport line for slurry (hereinafter referred to as adjusted high concentration slurry), 16 a distributor for adjusted high concentration slurry, 17
is a return circulation line for a part of the adjusted high concentration slurry (hereinafter referred to as the returned adjusted high concentration slurry), 18 is an ultra-fine grinding mill, and 19 is supplied to the ultra-fine grind mill 18 to adjust the water concentration of the slurry. A tank for mill adjustment water that stores water (hereinafter referred to as ultrafine grinding mill adjustment water), 20 a supply line for ultrafine grinding mill adjustment water, and 21 an addition of surfactant etc. to be supplied to the ultrafine grinding mill 18. 22 is a supply line for the ultrafine mill additive, and 23 is a tank for storing the ultrafine particle-containing slurry obtained in the ultrafine mill 18. A return circulation line, 24 is a transportation line for high-quality high-concentration slurry (hereinafter referred to as product high-concentration slurry) to be supplied as a product or to the next process, and 25 is a high-quality high-concentration slurry to be supplied as a product or to the next process. This tank stores high-concentration slurry (hereinafter referred to as product high-concentration slurry tank). Note that the line 24 may be directly connected to combustion means such as a boiler (not shown).
However, the explanation regarding this will be omitted since it is the same below.
第１図に図示する実施例１においては、まず石
炭貯留槽１の石炭及び供給水用タンク３の粗粉砕
ミル供給水をライン２及び４を介して粗粉砕ミル
５に供給し、低濃度で粗粉砕処理し石炭20〜60重
量％の低濃度スラリを作る。この低濃度スラリを
ライン６によつて脱水機７に供給し、脱水して生
じる脱水水はライン８から排水し、一方脱水ケー
キはライン９を介してスラリ調整槽１０に供給す
る。スラリ調整槽１０では脱水ケーキ、スラリの
水分濃度を調整するために調整水用タンク１１か
らライン１２を介して供給される調整水、添加剤
用タンク１３からライン１４を介して供給される
添加剤および超微粉砕ミル１８で得られる超微小
粒含有スラリを一緒に混合撹拌しながら濃度など
が適当なものになるように調整する。このスラリ
調整槽１０で調整して得られる調整高濃度スラリ
をライン１５から分配器１６に供給し、その１部
はライン１７を介して超微粉砕ミル１８に供給す
る。この超微粉砕ミル１８に供給される返送調整
高濃度スラリ中の石炭粒は超微粉砕されながら摩
砕され、またスラリの水分濃度を調整するために
超微粉砕ミル調整水用タンク１９からライン２０
を介して供給される超微粉砕ミル調整水、超微粉
砕ミル添加剤用タンク２１からライン２２を介し
て供給される超微粉砕ミル添加剤と一緒に混合混
合撹拌される。こうして得られる丸味のある超微
小粒の石炭粒多量に含み適当な濃度に練られた返
送超微小粒含有スラリをライン２３を介してスラ
リ調整槽１０に返送し、上述したようにスラリ調
整槽１０で脱水ケーキ、調整水、添加剤とともに
混合撹拌することによつて粘度の低い均一性のあ
る良質の調整高濃度スラリを得る。この良質の調
整高濃度スラリは上述するように分配器１６に供
給し、１部はライン１７に返送され、他の調整高
濃度スラリは分配器１６から製品高濃度スラリと
してライン２４から製品高濃度スラリ用のタンク
２５に輸送して貯留する。 In Example 1 shown in FIG. 1, first, coal in a coal storage tank 1 and coarse grinding mill feed water in a feed water tank 3 are supplied to a coarse grinding mill 5 via lines 2 and 4, and Coarsely pulverize to create a low-concentration slurry containing 20 to 60% coal by weight. This low concentration slurry is supplied to a dehydrator 7 through a line 6, and the dehydrated water produced by dehydration is drained through a line 8, while the dehydrated cake is supplied through a line 9 to a slurry conditioning tank 10. In the slurry adjustment tank 10, a dehydrated cake, adjustment water supplied from an adjustment water tank 11 through a line 12 to adjust the water concentration of the slurry, and additives supplied from an additive tank 13 through a line 14. The ultrafine particle-containing slurry obtained in the ultrafine grinding mill 18 is mixed and stirred together to adjust the concentration to an appropriate value. The adjusted high concentration slurry obtained by adjusting in the slurry adjustment tank 10 is supplied from a line 15 to a distributor 16, and a portion thereof is supplied to an ultrafine grinding mill 18 via a line 17. The coal grains in the return adjustment high concentration slurry supplied to this ultrafine pulverization mill 18 are ground while being ultrafinely pulverized, and in order to adjust the water concentration of the slurry, a line is drawn from the ultrafine pulverization mill adjustment water tank 19. 20
The ultrafine mill adjustment water supplied via the ultrafine mill additive tank 21 is mixed and stirred together with the ultrafine mill additive supplied via line 22 from the ultrafine mill additive tank 21. The returned ultrafine particle-containing slurry thus obtained, which contains a large amount of rounded ultrafine coal particles and has been kneaded to an appropriate concentration, is returned to the slurry adjustment tank 10 via the line 23, and as described above, the slurry containing ultrafine particles is returned to the slurry adjustment tank 10 as described above. By mixing and stirring the dehydrated cake, adjusted water, and additives, a high-quality adjusted high-concentration slurry with low viscosity and uniformity is obtained. This good quality adjusted high concentration slurry is supplied to the distributor 16 as described above, one portion is returned to line 17, and the other adjusted high concentration slurry is sent from the distributor 16 as product high concentration slurry and from line 24 as product high concentration slurry. The slurry is transported to a tank 25 for slurry and stored therein.
このような方法によれば以下のような効果を得
ることができる。 According to such a method, the following effects can be obtained.
(1) 粗粉砕ミル５では、粉砕動力が最小となる低
濃度（石炭20〜60重量％）で粉砕を行なうの
で、粉砕動力が最小の点で運転が可能となる。(1) Since the coarse grinding mill 5 performs grinding at a low concentration (20 to 60% by weight of coal) where the grinding power is minimum, it is possible to operate at the point where the grinding power is minimum.
(2) 石炭を粗粉砕ミルで粗粉砕したのち、スラリ
調整槽１０から得られる調整高濃度スラリ中の
石炭粒を超微粉砕ミル１８で摩砕するので、石
炭粒は丸味を帯びる。したがつて、添加剤の分
散が良好となり、その結果微小石炭粒および超
微小石炭粒が石炭粒間に充填され石炭濃度が高
くて、しかも粘度の低い均質な製品高濃度スラ
リを得ることが出来る。(2) After the coal is coarsely pulverized by a coarse pulverizing mill, the coal grains in the adjusted high concentration slurry obtained from the slurry adjustment tank 10 are ground by the ultra-fine pulverizing mill 18, so that the coal grains have a rounded appearance. Therefore, the additives are well dispersed, and as a result, fine coal particles and ultra-fine coal particles are filled between the coal particles, making it possible to obtain a homogeneous high-concentration product slurry with high coal concentration and low viscosity. I can do it.
(3) 石炭を粗粉砕ミル５で粗粉砕したのち、スラ
リ調整槽１０から得られる調整高濃度スラリ中
の石炭粒を超微粉砕ミル１８で摩砕するととも
にさらに超微小粒化するので、製品として出て
来る高濃度スラリには粒径40〜数μの微小石炭
粒および粒径数μ以上の超微小石炭粒が多量に
含まれる。このためレオロジー特性が擬塑性と
なりきわめて貯蔵安定性が向上する。(3) After coarsely pulverizing the coal in the coarse pulverizing mill 5, the coal grains in the adjusted high concentration slurry obtained from the slurry adjusting tank 10 are ground in the ultra-fine pulverizing mill 18 and further made into ultra-fine particles. The highly concentrated slurry that comes out contains a large amount of microscopic coal particles with a particle size of 40 to several microns and ultrafine coal particles with a particle size of several microns or more. Therefore, the rheological properties become pseudoplastic and the storage stability is extremely improved.
(4) スラリ調整槽１０で混合撹拌して調整された
粘度の低い均一性のある良質の調整高濃度スラ
リの１部を返送調整高濃度スラリの返送循環ラ
イン１７から超微粉砕ミル１８に供給し、この
超微粉砕ミル１８で返送調整高濃度スラリの石
炭粒を再度摩砕しながら超微粉砕して丸味のあ
る超微小粒含有スラリを作つて返送循環ライン
２３からスラリ調整槽に返送するので、スラリ
調整槽１０では常に均一性のある良質の超微小
粒含有スラリが供給されながら混合撹拌され
る。したがつて、スラリ調整槽１０からの調整
高濃度スラリ、すなわち製品高濃度スラリは常
に均一なものとなり、製品としてボイラ等燃焼
手段等に供給された場合、定常の燃焼状態を得
ることが出来る。(4) A portion of the high-quality adjusted high-concentration slurry with low viscosity and uniformity that has been mixed and stirred in the slurry adjustment tank 10 is returned and supplied to the ultrafine grinding mill 18 from the return circulation line 17 for the adjusted high-concentration slurry. Then, the coal particles in the return adjusted high concentration slurry are ground again in this ultrafine grinding mill 18 and ultrafinely pulverized to produce a roundish slurry containing ultrafine particles, which is returned to the slurry adjustment tank from the return circulation line 23. Therefore, in the slurry adjustment tank 10, uniform and high quality slurry containing ultrafine particles is constantly supplied and mixed and stirred. Therefore, the adjusted high-concentration slurry from the slurry adjustment tank 10, that is, the product high-concentration slurry, is always uniform, and when it is supplied as a product to combustion means such as a boiler, a steady combustion state can be obtained.
(5) 石炭を粗粉砕ミルで粗粉砕したものを脱水す
るので、脱水機の脱水性能が著しく向上し、ま
た脱水ケーキ中の水分が減少するので、その後
の高濃度スラリの水分を低目におさえることが
出来る。また、水分調整濃度を広い範囲で選ぶ
ことが出来る。(5) Since the coal is coarsely pulverized using a coarse pulverizing mill and then dehydrated, the dehydration performance of the dehydrator is significantly improved, and the water content in the dehydrated cake is reduced, making it possible to reduce the water content of the subsequent high-concentration slurry. I can hold it down. In addition, the water adjustment concentration can be selected from a wide range.
実施例 ２
以下、本願第２の発明の好ましい実施例を第２
図に示すフローシートを参照して説明する。Example 2 Hereinafter, a preferred example of the second invention of the present application will be described as a second example.
This will be explained with reference to the flow sheet shown in the figure.
第２図において、符号１乃至２５は第１図に図
示する実施例における符号１乃至２５と均等物で
あるので説明を省略する。そして、２６は塊砕装
置、２７は第３図に図示するトルク均等型塊砕装
置であり、この塊砕装置２６他は２７でライン９
を介して供給された板状または塊状の脱水ケーキ
を小塊状又は微小塊状に塊砕するものである。２
８はこの小塊状または微小塊状の脱水ケーキ（以
下小塊状脱水ケーキと記す）を輸送するラインで
ある。 In FIG. 2, numerals 1 to 25 are equivalent to numerals 1 to 25 in the embodiment shown in FIG. 1, so their explanation will be omitted. 26 is a lump crusher, 27 is a torque equalizing type lump crusher shown in FIG.
The plate-shaped or block-shaped dehydrated cake supplied through the pulverizer is crushed into small blocks or micro-blocks. 2
8 is a line for transporting the dehydrated cake in the form of small lumps or micro lumps (hereinafter referred to as the dehydrated cake in the form of small lumps).
また、第３図は該当実施例に適用されるトルク
均等型塊砕装置を一部断面で示す斜視図である。
第３図において、２７ａは脱水ケーキの入口、２
７ｂは小塊状脱水ケーキの出口、２７ｃは適宜な
間隔を有して並行に架設され上端側に細くなつた
くさび形のスリツト用棒群、２７ｄはスリツト用
棒群２７ｃの長手方向とほぼ直角に配設された回
転軸、２７ｅは回転軸２７ｄを回転させるモー
タ、２７ｆは回転軸２７ｄの円周方向にみて位相
をずらして設けられておりかつスリツト用棒２７
ｃで作られる各々のスリツトに各々が咬合するよ
うに嵌装された塊砕用棒群である。 Moreover, FIG. 3 is a perspective view, partially in cross section, of the torque equalization type crushing device applied to the corresponding embodiment.
In FIG. 3, 27a is the inlet of the dehydrated cake;
7b is an outlet for the small dehydrated cake; 27c is a group of wedge-shaped slit rods that are installed in parallel at appropriate intervals and tapers toward the upper end; and 27d is a group of slit rods that are approximately perpendicular to the longitudinal direction of the slit rod group 27c. The rotary shaft 27e is a motor for rotating the rotary shaft 27d, and the slit rod 27 is provided with a phase shift in the circumferential direction of the rotary shaft 27d.
This is a group of agglomeration rods that are fitted so as to fit into each of the slits made in c.
第２図に図示する実施例２では、第１図に図示
する実施例１の場合において、脱水機７で得られ
る脱水ケーキをライン９を介して塊砕装置２６又
はトルク均等型粉砕装置２７へ供給し板状または
塊状の脱水ケーキを微小塊状または微小塊状に塊
砕して小塊状脱水ケーキとし、これを小塊状脱水
ケーキライン２８を介してスラリ調整槽１０に供
給する点に特徴がある。 In Embodiment 2 shown in FIG. 2, in the case of Embodiment 1 shown in FIG. The device is characterized in that the supplied plate-shaped or block-shaped dehydrated cake is crushed into minute blocks or minute blocks to form a small block-shaped dehydrated cake, and this is supplied to the slurry adjustment tank 10 via the small block-shaped dewatered cake line 28.
以上、第２発明に係る実施例２を示す第２図の
フローシートに基づいて詳述したように、第２発
明は、第１の発明で得られる上記(1)乃至(5)の効果
の他に次のような効果が得られる。 As described above in detail based on the flow sheet of FIG. 2 showing Example 2 according to the second invention, the second invention has the effects (1) to (5) above obtained in the first invention. Other effects can be obtained as follows.
(6) スラリ調整槽１０に供給する脱水ケーキを小
塊状に塊砕して供給するために、スラリ調整槽
１０に供給されるスラリ調整のための調整水、
添加剤及び返送超微小粒含有スラリとの均一な
混合撹拌がスムーズに行き良質で均一な製品高
濃度スラリを得ることが出来る。(6) Adjusted water for slurry adjustment that is supplied to the slurry adjustment tank 10 in order to crush and supply the dehydrated cake to the slurry adjustment tank 10 into small chunks;
The additives and the returned slurry containing ultrafine particles are mixed and stirred smoothly, and a high-quality, uniform product slurry with high concentration can be obtained.
(7) また、均一混合がスムーズに出来るので、製
品高濃度スラリの単位時間当りの生産量が著し
く多くなり、したがつて生産性が向上する。(7) Furthermore, since homogeneous mixing can be achieved smoothly, the amount of product high-concentration slurry produced per unit time is significantly increased, and productivity is therefore improved.
(8) 第３図に図示する場合には、塊砕装置がトル
ク均等型であるので、モータにかかるトルクが
均等になりモータのオーバヒートの防止でき、
小容量のモータで塊砕作業がスムーズに行く。
このような塊砕作業が非常にスムーズに行くの
で、大量の製品高濃度スラリをスムーズに作る
ことが出来る。(8) In the case shown in Fig. 3, the crushing device is of the torque equalization type, so the torque applied to the motor is equalized, and overheating of the motor can be prevented.
The small capacity motor allows smooth crushing work.
Since this type of agglomeration work is carried out very smoothly, a large amount of high-concentration product slurry can be produced smoothly.
実施例 ３及び４
以下、本発明の第３の発明の好ましい実施例を
第４図及び第５図に示すフローシートを参照して
説明する。Embodiments 3 and 4 Hereinafter, preferred embodiments of the third aspect of the present invention will be described with reference to flow sheets shown in FIGS. 4 and 5.
第４図及び第５図において、符号１乃至２５の
うち同符号のものは第１図に図示する実施例１に
おける符号１乃至２５のうち同符合のものと均等
物であるので説明を省略する。そして、９ａは粗
粒カツト脱水ケーキの輸送ライン、２９はライン
６から供給されてきた低濃度スラリ中の粗粒を分
離し粗粒含有低濃度スラリと粗粒カツト低濃度ス
ラリとに分級する分級器、３０は分級器２９で分
級された粗粒含有低濃度スラリの排出ライン、３
１は分級器２９で分級された粗粒カツト低濃度ス
ラリの輸送ラインである。 In FIGS. 4 and 5, the same reference numerals 1 to 25 are equivalent to the same reference numerals 1 to 25 in Embodiment 1 shown in FIG. 1, so their explanation will be omitted. . 9a is a transportation line for the coarse cut dehydrated cake, and 29 is a classification for separating the coarse particles in the low concentration slurry supplied from line 6 and classifying the coarse particles into a low concentration slurry containing coarse particles and a coarse cut low concentration slurry. 30 is a discharge line for the low concentration slurry containing coarse particles classified by the classifier 29;
Reference numeral 1 denotes a transport line for the coarse cut low concentration slurry that has been classified by the classifier 29.
第４図に図示する実施例３は、第１図に図示す
る実施例１の場合において、粗粉砕ミル５で得ら
れる低濃度スラリをライン６によつて分級器２９
に供給して粗粒含有低濃度スラリと粗粒カツト低
濃度スラリとに分級し、粗粒カツト低濃度スラリ
のみをライン３１から脱水機７に供給する点に特
徴がある。 In the third embodiment shown in FIG. 4, in the case of the first embodiment shown in FIG.
It is characterized in that it is supplied to a line 31 to be classified into a low concentration slurry containing coarse particles and a coarse cut low concentration slurry, and only the coarse cut low concentration slurry is supplied to the dehydrator 7 from a line 31.
以上、第３の発明に係る実施例３を示す第４図
のフローシートに基づいて詳述したように、第３
の発明では、第１の発明で得られる上記(1)乃至(5)
に記載の効果の他に次のような効果が得られる。 As described above in detail based on the flow sheet of FIG. 4 showing the third embodiment according to the third invention, the third embodiment
In the invention, the above (1) to (5) obtained in the first invention are obtained.
In addition to the effects described in , the following effects can be obtained.
(9) 分級器で分級し、粗粒カツト低濃度スラリの
みを製品の製造ラインに供給するので、製品高
濃度スラリ中には粗粒が非常に少なくなり微小
又は超微小石炭粒が増大することにより製品高
濃度スラリのレオロジー特性が擬塑性となり貯
蔵安定性が向上する。(9) Since only coarse grain cut slurry with low concentration is supplied to the product manufacturing line after being classified with a classifier, there are very few coarse grains in the product high concentration slurry and the number of fine or ultra-fine coal grains increases. As a result, the rheological properties of the high-concentration product slurry become pseudoplastic, improving storage stability.
(10) 分級器２９で分級するので製品高濃度スラリ
中と粗粒の最大径を任意に選ぶことが出来る。
したがつて、所望の粒度製品高濃度スラリを得
ることが容易になる。(10) Since the classification is performed by the classifier 29, the maximum diameter of the coarse particles in the product high concentration slurry can be arbitrarily selected.
Therefore, it becomes easier to obtain a slurry with a high concentration of product of the desired particle size.
(11) 分級器２９で分給し、粗粒カツト低濃度スラ
リのみを製品の製造ラインに供給するので、製
品高濃度スラリ中に粗粒が非常に少なくなる。
したがつて、ボイラ等の燃焼手段で燃焼させた
場合に、未燃灰分が極めて少なくなりボイラ内
の残滓も殆んどなくなつて、しかも燃焼効率が
良くなる。(11) Since the classifier 29 divides the slurry and supplies only the coarse grain cut low concentration slurry to the product manufacturing line, there are very few coarse grains in the product high concentration slurry.
Therefore, when it is combusted in a combustion means such as a boiler, the amount of unburned ash is extremely small, the residue inside the boiler is almost completely eliminated, and the combustion efficiency is improved.
また、第５図は第３の発明に係る実施例４の
フローシートを示し、分級器２９で得られる粗
粒含有低濃度スラリを粗粒含有低濃度スラリの
返送循環ライン３０ａを介して粗粉砕ミル５に
返送し、含有されている粗粒をさらに粗粉砕ミ
ル５で細小又は微小石炭粒に粉砕するものであ
る。 Moreover, FIG. 5 shows a flow sheet of Example 4 according to the third invention, in which the coarse particle-containing low concentration slurry obtained in the classifier 29 is coarsely pulverized via the coarse particle-containing low concentration slurry return circulation line 30a. The coal is returned to the mill 5, and the contained coarse particles are further ground into fine or fine coal particles by the coarse grinding mill 5.
このように、第５図に図示する第３の発明に
係る実施例４では次の効果がさらに得られる。 In this way, the fourth embodiment according to the third invention illustrated in FIG. 5 further provides the following effects.
粗粒子含有低濃度スラリを再度粗粉砕ミル
５で粗粉砕するので、製品高濃度スラリ中に
は粗粒がさらに非常に小さくなり、一方微小
及び超微小石炭粒が増大することにより製品
高濃度スラリのレオロジー特性が凝集塑性と
なり貯蔵安定性が向上する。 Since the coarse particle-containing low-concentration slurry is again coarsely pulverized by the coarse grinding mill 5, the coarse particles in the product high-concentration slurry become even smaller, while the fine and ultra-fine coal particles increase, resulting in a product with high concentration. The rheological properties of the slurry become agglomerated plastic, improving storage stability.
分級器２９で分級した粗粒含有低濃度スラ
リは再度粗粉砕ミルで粉砕するので、製品高
濃度スラリ中の粗粒の最大径をきわめて任意
に選ぶことが出来る。したがつて、所望の粒
度分布の製品高濃度スラリを得ることがきわ
めて容易になる。 Since the coarse particle-containing low concentration slurry classified by the classifier 29 is ground again in the coarse grinding mill, the maximum diameter of the coarse particles in the product high concentration slurry can be selected very arbitrarily. Therefore, it becomes extremely easy to obtain a highly concentrated product slurry with a desired particle size distribution.
分級器２９で分級した粗粒含有低濃度スラ
リは再度粗粉砕ミル５で粉砕するので、製品
高濃度スラリ中の粗粒が非常に少なくなる。
したがつて、ボイラ等の燃焼手段で燃焼させ
た場合に、未燃炭炭分がさらに極めて少くな
りボイラ内の残滓もきわめて少なくなり、し
かも燃焼効率がさらに良くなる。 Since the coarse particle-containing low concentration slurry classified by the classifier 29 is crushed again by the coarse grinding mill 5, the coarse particles in the product high concentration slurry are extremely reduced.
Therefore, when the coal is combusted in a combustion means such as a boiler, the amount of unburned coal is extremely reduced, the amount of residue in the boiler is also extremely reduced, and the combustion efficiency is further improved.
実施例 ５及び６
以下、本願第４の発明の好ましい実施例を第６
図及び第７図に示すフローシートを参照して説明
する。Examples 5 and 6 Hereinafter, preferred embodiments of the fourth invention of the present application will be described as the sixth example.
This will be explained with reference to the flow sheet shown in FIG.
第６図及び第７図において、符号１乃至３１の
うち同符号のものは第２図乃至第４図に図示する
実施例における符号１乃至３１のうちの同符号の
ものと均等物であるので説明を省略する。なお、
９ａは粒径カツト脱水ケーキの輸送ライン、２８
ａは小塊状粗粒カツト脱水ケーキの輪送ラインで
ある。 In FIG. 6 and FIG. 7, the same reference numerals 1 to 31 are equivalent to the same reference numerals 1 to 31 in the embodiments shown in FIGS. 2 to 4. The explanation will be omitted. In addition,
9a is a transport line for particle size cut dehydrated cake, 28
A is a conveying line for small-sized coarse cut dehydrated cakes.
第６図に図示する実施例５は、第２図及び第４
図に図示する実施例の場合において、粗粒砕ミル
５で得られる低濃度スラリをライン６によつて分
級器２９に供給して粗粒含有低濃度スラリと粗粒
カツト低濃度スラリとに分級し、粗粒カツト低濃
度スラリのみをライン３１から脱水機７に供給す
ること及び脱水機７で得られ粗粒カツト脱水ケー
キはライン９ａを介して塊砕装置２６又はトルク
均等型塊砕装置２７に供給し板状又は塊状の脱水
ケーキを小塊状又は微小塊状に塊砕して小塊状脱
水ケーキとしこれをライン２８ａを介してスラリ
調整槽１０に供給する点に特徴がある。 Embodiment 5 illustrated in FIG.
In the case of the embodiment shown in the figure, the low concentration slurry obtained by the coarse grain crushing mill 5 is supplied to the classifier 29 through the line 6 and is classified into a low concentration slurry containing coarse grains and a low concentration slurry containing coarse grain cuts. Then, only the coarse cut low-concentration slurry is supplied to the dehydrator 7 from the line 31, and the coarse cut dehydrated cake obtained from the dehydrator 7 is passed through the line 9a to the crushing device 26 or the torque equalization type crushing device 27. It is characterized in that the plate-shaped or lump-like dehydrated cake is crushed into small lumps or minute lumps to produce a small lump-like dehydrated cake, which is then fed to the slurry adjustment tank 10 via the line 28a.
以上、第４図と発明に係る実施例５を示す第６
図のフローシートに基づいて詳述したように、第
４の発明では第１の発明乃至第３の発明で得られ
る上記(1)乃至(11)に記載の効果の他に次のような効
果が得られる。 As mentioned above, FIG. 4 and FIG. 6 showing Example 5 according to the invention
As described in detail based on the flow sheet in the figure, the fourth invention provides the following effects in addition to the effects described in (1) to (11) above obtained in the first to third inventions. is obtained.
(12) 脱水する前に分級し、粗粒カツト低濃度スラ
リのみ脱水し、さらに脱水後の板状又は塊状の
粗粒カツト脱水ケーキを塊砕装置又はトルク均
等型塊砕装置で小塊状に塊砕してスラリ調整槽
に供給するため、また、スラリ調整槽では常に
超微粉砕されかつ摩砕された超微小粒含有スラ
リが返送されて来て一緒に調整されるのでこれ
らの相乗効果によつて極めて良質な製品濃度ス
ラリを得ることが出来る。(12) Classify before dewatering, dehydrate only the coarse cut low concentration slurry, and then crush the plate-shaped or lumpy coarse cut dehydrated cake after dewatering into small lumps using a crusher or torque equalization type crusher. Because the slurry is crushed and supplied to the slurry adjustment tank, and the slurry containing ultrafine particles that has been ultrafinely crushed and ground is always returned to the slurry adjustment tank and adjusted together, the synergistic effect of these As a result, an extremely high quality product concentration slurry can be obtained.
また第７図は第４の発明に係る実施例６を示
し、第６図に図示する第４と発明に係る実施例
５に、上記第３の発明に係る実施例４を図示す
る第５図のフローシートで説明した構成、作用
して付加して、上記、、に記載した効果
のほかに次の効果をねらつたものである。 Further, FIG. 7 shows a sixth embodiment according to the fourth invention, and in addition to the fourth embodiment shown in FIG. 6 and the fifth embodiment according to the invention, FIG. In addition to the effects described in the above, the following effects are aimed at by adding the structure explained in the flow sheet of .
脱水する前に分級し粗粒含有低濃度スラリ
は粗粉砕ミル５へ返送して再度粉砕し、粗粒
カツト低濃度スラリのみを脱水し、さらに脱
水後の板状又は塊状の粗粒カツト脱水ケーキ
を塊砕装置２６又はトルク均等型塊砕装置２
７で小塊状に塊砕してスラリ調整槽１０に供
給するため、また、スラリ調整槽１０では常
に超微粉砕ミル１８で超微粉砕されかつ摩砕
された超微小粒含有スラリが返送されて来て
一緒に調整されるのでこれらの相乗効果によ
つて極めて良質な製品高濃度スラリを容易に
得ることができる。 The low concentration slurry containing coarse particles is classified before dehydration and is returned to the coarse grinding mill 5 to be crushed again, only the coarse cut low concentration slurry is dehydrated, and the coarse cut cut dehydrated cake is further dehydrated in the form of plates or blocks after dehydration. The agglomerate device 26 or torque equalization type agglomerate device 2
In order to crush the slurry into small pieces in step 7 and supply it to the slurry adjustment tank 10, the slurry containing ultrafine particles is always returned to the slurry adjustment tank 10, which has been ultrafinely pulverized and ground in the ultrafine grinding mill 18. Because of these synergistic effects, it is easy to obtain a highly concentrated slurry of extremely high quality product.
実施例 ７及び８
以下、本発明第５の発明の好ましい実施例を第
８図及び第９図に示すフローシートを参照して説
明する。Embodiments 7 and 8 Hereinafter, preferred embodiments of the fifth aspect of the present invention will be described with reference to flow sheets shown in FIGS. 8 and 9.
第８図及び第９図において、符号１乃至２９の
うち同符号のものは第１図乃至第７図に図示する
実施例における符号１乃至２９のうち同符号のも
のと均等物であるので説明を省略する。そして、
９ａは粗粒カツト脱水ケーキの輸送ライン、３０
ｂは粗粒含有希釈低濃度スラリの排出ライン、３
１ａは粗粒カツト希釈低濃度スラリの輸送ライ
ン、３２はライン６を介して供給されてくる低濃
度スラリを希釈水で分級しやすい濃度まで薄める
希釈用タンク、３３は希釈水用のタンク、３４は
希釈水タンク３３の希釈水を供給する希釈水の供
給ライン、３５は希釈用タンク３２で希釈されて
得られる石炭15〜40重量％、水60〜85重量％の低
濃度スラリ（以下、希釈低濃度スラリと記す）を
輸送するラインである。 In FIG. 8 and FIG. 9, the same reference numerals among the reference numerals 1 to 29 are equivalent to the same reference numerals among the reference numerals 1 to 29 in the embodiment illustrated in FIG. 1 to FIG. omitted. and,
9a is a transportation line for coarse cut dehydrated cake; 30
b is a discharge line for diluted low concentration slurry containing coarse particles, 3
1a is a transport line for the coarse cut diluted low concentration slurry; 32 is a dilution tank that dilutes the low concentration slurry supplied via line 6 to a concentration that is easy to classify with dilution water; 33 is a tank for dilution water; 34 35 is a dilution water supply line that supplies dilution water from the dilution water tank 33; This line transports low-concentration slurry).
第８図に図示する実施例７は、第４図に図示す
る実施例３の場合において、粗粉砕ミル５で得ら
れる低濃度スラリをライン６によつて希釈用タン
ク３２に導き、この希釈用タンク３２でタンク３
３からライン３４を介して供給される希釈水で分
給しやすい濃度まで薄める。すなわち、石炭15〜
40重量％の希釈低濃度スラリにする。この希釈低
濃度スラリをライン３５によつて分給器２９に供
給して粗粒含有希釈低濃度スラリと粗粒カツト希
釈低濃度スラリに分級する。そして、この粗粒カ
ツト希釈低濃度スラリをライン３１ａから脱水機
７に供給数する点に特徴がある。 Embodiment 7 illustrated in FIG. 8 differs from Embodiment 3 illustrated in FIG. tank 32 and tank 3
3 and diluted with dilution water supplied via line 34 to a concentration that is easy to dispense. i.e. coal 15~
Make a diluted low concentration slurry of 40% by weight. This diluted low concentration slurry is supplied to the distributor 29 through a line 35 and is classified into a diluted low concentration slurry containing coarse grains and a diluted low concentration slurry containing coarse grain cuts. The feature is that this coarse cut diluted low concentration slurry is supplied to the dehydrator 7 from the line 31a.
また、第９図は第５の発明に係る実施例８を示
し、分級器２９で得られる粗粒含有希釈低濃度ス
ラリを粗粒含有希釈低濃度スラリの返送循環ライ
ン３０ｃを介して粗粉砕ミル５に返送し、含有さ
れている粗粒をさらに粗粉砕ミル５で細小又は微
小石炭粒に粉砕するものである。 Further, FIG. 9 shows Example 8 according to the fifth invention, in which the diluted low concentration slurry containing coarse particles obtained in the classifier 29 is passed through a return circulation line 30c for the diluted low concentration slurry containing coarse particles to a coarse grinding mill. 5, and the contained coarse particles are further crushed into fine or fine coal particles by a coarse crushing mill 5.
以上、第５の発明に係る実施例７及び８を示す
第８図及び第９図のフローシートに基づいて詳述
したように、第５の発明では第１の発明及び第３
の発明で得られる上記(1)乃至(12)に記載の効果の他
の次にような効果が得られる。 As described above in detail based on the flow sheets of FIGS. 8 and 9 showing Examples 7 and 8 according to the fifth invention, the fifth invention
In addition to the effects described in (1) to (12) above, the following effects can be obtained with the invention.
(13) 分級器２９で分給する前に石炭20〜60重量％
の低濃度スラリを希釈して石炭15〜40重量％の
薄い低濃度スラリにするので分級器２９での分
級能率が向上し、製品高濃度スラリの大量生産
が可能である。(13) 20 to 60% by weight of coal before being distributed in the classifier 29
Since the low concentration slurry is diluted to a thin low concentration slurry containing 15 to 40% by weight of coal, the classification efficiency in the classifier 29 is improved and mass production of product high concentration slurry is possible.
実施例 ９及び10
以下、本発明の第６の発明の好ましい実施例を
第１０図及び第１１図に示すフローシートを参照
して説明する。Embodiments 9 and 10 Hereinafter, preferred embodiments of the sixth aspect of the present invention will be described with reference to flow sheets shown in FIGS. 10 and 11.
第１０図及び第１１図において、符号１乃至３
５のうち同符号のもの及び符号９ａ，３０ｂ，３
０ｃ，３１ｃは、第８図及び第９図に図示する実
施例７及び８における符号１乃至３５のうち同符
号のもの及び符号９ａ，３０ｂ，３０ｃ，３１ｃ
と均等物であるので説明を省略する。そして、２
８ａは小塊状粗粒カツト脱水ケーキの輸送ライン
である。 In FIGS. 10 and 11, codes 1 to 3
Items with the same symbol among 5 and symbols 9a, 30b, 3
0c and 31c are the same numbers among the codes 1 to 35 in Examples 7 and 8 shown in FIGS. 8 and 9, and the codes 9a, 30b, 30c, and 31c.
Since it is equivalent to , the explanation will be omitted. And 2
8a is a transportation line for the small-sized coarse cut dehydrated cake.
第１０図に図示する実施例９は、第８図に図示
する実施例７の場合において脱水機７で得られる
粗粒カツト脱水ケーキをライン９ａを介して塊砕
装置２６又はトルク均等型塊砕装置２７に供給し
板状又は塊状の脱水ケーキを小塊状又は微小塊状
に塊砕して小塊状粗粒カツト脱水ケーキとし、こ
れをライン２８ａを介してスラリ調整槽１０に供
給する点に特徴がある。 In the embodiment 9 shown in FIG. 10, the coarse cut dehydrated cake obtained in the dehydrator 7 in the case of the embodiment 7 shown in FIG. The device 27 is supplied with a dehydrated cake in the form of a plate or a lump, which is then crushed into small or minute chunks to form a small coarse cut dehydrated cake, which is then supplied to the slurry adjustment tank 10 via a line 28a. be.
以上、第６の発明に係る実施例９を示す第１０
図のフローシートに基づいて詳述したように、第
６の発明では第１の発明乃至第５の発明で得られ
る上記(1)乃至(13)記載の効果の他に次のような効果
が得られる。 As above, the 10th embodiment showing the 9th embodiment according to the 6th invention
As described in detail based on the flow sheet in the figure, the sixth invention has the following effects in addition to the effects described in (1) to (13) above obtained in the first to fifth inventions. can get.
(14) 分級する前に分級しやすいように希釈し、ま
た分級によつて粗粒カツトし、粗粒カツト希釈
低濃度スラリのみを脱水し、さらに脱水後の板
状又は塊状の粗粒カツト脱水ケーキを塊砕装置
又はトルク均等型塊砕装置で小塊状に塊砕して
スラリ調整槽に供給ため、また、スラリ調整槽
では常に超微粉砕ミルで超微粉砕されながら摩
砕され丸味を帯びた超微小粒を含有するスラリ
が返送循環されて来て一緒に調整されるので、
これらの相乗効果によつて極めて良質の製品高
濃度スラリを得ることが出来る。(14) Dilute to make it easier to classify before classification, cut coarse grains by classification, dehydrate only the diluted low concentration slurry of the coarse grain cuts, and further dehydrate the plate-shaped or lump-like coarse grain cuts after dehydration. In order to crush the cake into small pieces using a lump crusher or a torque equalization type lump crusher and supply it to the slurry adjustment tank, in the slurry adjustment tank, the cake is constantly crushed and ground with an ultra-fine grinding mill to give it a rounded appearance. The slurry containing ultra-fine particles is returned and recirculated and adjusted together.
These synergistic effects make it possible to obtain highly concentrated product slurry of extremely high quality.
また、第１１図は第６の発明に係る実施例10
を示し、第１０図に図示する第６の発明に係る
実施例９に、上記第５の発明に係る実施例８を
図示する第９図のフローシートで説明した厚
生、作用を付加して、上記乃至に記載した
効果の他に次の効果をねらつたものである。 Moreover, FIG. 11 shows Example 10 according to the sixth invention.
, and adding the welfare and effects explained in the flow sheet of FIG. 9 illustrating Example 8 of the fifth invention to Example 9 according to the sixth invention illustrated in FIG. 10, In addition to the effects described above, the following effects are aimed at.
分級する前に分級しやすいように希釈し、
また分級によつて粗粒をカツトし粗粒含有希
釈濃度スラリは粗粉砕ミル５に返送して再度
粉砕し、粗粒がカツトされた希釈低濃度スラ
リのみを脱水し、さらに脱水後の板状又は塊
状の粗粒カツト脱水ケーキを塊砕装置２６又
はトルク均等型塊砕装置２７で小塊状に塊砕
してスラリ調整槽１０に供給するため、ま
た、スラリ調整槽１０では常に超微粉砕ミル
１８で超微粉砕されながら摩砕され丸味を帯
びた超微小粒を、含有するスラリが返送循環
されて来て一緒に調整されるので、これらの
相乗効果によつて極めて良質の製品高濃度ス
ラリを得ることが出来る。 Before classification, dilute to make it easier to classify.
In addition, coarse grains are cut by classification, and the diluted slurry containing coarse grains is returned to the coarse grinding mill 5 and crushed again. Only the diluted low concentration slurry from which the coarse grains have been cut is dehydrated. Alternatively, in order to crush the coarse cut dehydrated cake into small pieces using the agglomeration device 26 or the torque equalization type agglomeration device 27 and supply it to the slurry adjustment tank 10, the slurry adjustment tank 10 always uses an ultra-fine grinding mill. The slurry containing the rounded ultra-fine particles that are ground and rounded during ultra-fine pulverization in step 18 is returned and circulated and adjusted together, so the synergistic effect of these makes it possible to create a high-concentration slurry of extremely high quality. can be obtained.
以上詳述した如く本発明の高濃度石炭水スラリ
の製造方法によれば、粘性が低く、均一で良質の
高濃度石炭水スラリを得ることができる等顕著な
効果を奏するものである。
As detailed above, the method for producing a high concentration coal water slurry of the present invention has remarkable effects such as being able to obtain a high concentration coal water slurry of low viscosity, uniformity and good quality.
第１図は本願第１の発明に係る実施例１におけ
る高濃度石炭水スラリの製造方法に関するフロー
シート、第２図は第２の発明に係る実施例２のフ
ローシート、第３図は本発明に係る実施例に適用
されるトルク均等型塊砕装置を一部断面で示す斜
視図、第４図は第３の発明に係る実施例３のフロ
ーシート、第５図は第３の発明に係る実施例４の
フローシート、第６図は第４の発明に係る実施例
５のフローシート、第７図は第４の発明に係る実
施例６のフローシート、第８図は第５の発明に係
る実施例７のフローシート、第９図は第５の発明
に係る実施例８のフローシート、第１０図は第６
の発明に係る実施例９のフローシート、第１１図
は第６の発明に係る実施例10のフローシート、第
１２図は従来の低濃度湿式高濃度スラリの製造法
に関するフローシートである。
１……石炭の供給貯留槽、２……石炭の供給ラ
イン、３……粗粉砕ミル供給水用タンク、４……
粗粉砕ミル供給水の供給ライン、５……粗粉砕ミ
ル、６……低濃度スラリの輸送ライン、７……脱
水機、８……脱水水の排水ライン、９……脱水ケ
ーキの輸送ライン、９ａ……粗粒カツト脱水ケー
キの輸送ライン、１０……スラリ調整槽、１１…
…調整水用タンク、１２……調整水の供給ライ
ン、１３……添加剤用タンク、１４……添加剤の
供給ライン、１５……調整高濃度スラリの輸送ラ
イン、１６……分配器、１７……返送調整高濃度
スラリの返送循環ライン、１８……超微粉砕ミ
ル、１９……超微粉砕ミル調整水用タンク、２０
……超美粉砕ミル調整水の供給ライン、２１……
超微粉札ミル添加剤用タンク、２２……超微粉砕
ミル添加剤の供給ライン、２３……超微小粒含有
スラリの返送循環ライン、２４……製品高濃度ス
ラリの輸送ライン、２５……製品高濃度スラリ用
タンク、２６……塊砕装置、２７……トルク均等
型塊砕装置、２８……小塊状脱水ケーキの輸送ラ
イン、２８ａ……小塊状粗粒カツト脱水ケーキの
輸送ライン、２９……分級器、３０……粗粒含有
低濃度スラリの排出ライン、３０ａ……粗粒含有
低濃度スラリの返送循環ライン、３０ｂ……粗粒
含有希釈低濃度スラリの排出ライン、３０ｃ……
粗粒含有希釈低濃度スラリの返送循環ライン、３
１……粗粒カツト低濃度スラリの輸送ライン、３
１ａ……粗粒カツト希釈低濃度スラリの輸送ライ
ン、３２……希釈タンク、３３……希釈水用タン
ク、３４……希釈水の供給ライン、３５……希釈
低濃度スラリの輸送ライン。
FIG. 1 is a flow sheet relating to a method for producing a highly concentrated coal-water slurry in Example 1 according to the first invention of the present application, FIG. 2 is a flow sheet of Example 2 according to the second invention, and FIG. 3 is a flow sheet of the present invention. FIG. 4 is a flow sheet of Embodiment 3 according to the third invention, and FIG. Flow sheet of Example 4, FIG. 6 is a flow sheet of Example 5 according to the fourth invention, FIG. 7 is a flow sheet of Example 6 according to the fourth invention, and FIG. 8 is a flow sheet of Example 6 according to the fourth invention. The flow sheet of Example 7, FIG. 9 is the flow sheet of Example 8 according to the fifth invention, and FIG. 10 is the flow sheet of Example 6 according to the fifth invention.
FIG. 11 is a flow sheet of Example 10 according to the sixth invention, and FIG. 12 is a flow sheet of a conventional low-concentration wet high-concentration slurry manufacturing method. 1...Coal supply storage tank, 2...Coal supply line, 3...Coarse grinding mill supply water tank, 4...
Coarse grinding mill supply water supply line, 5... Coarse grinding mill, 6... Low concentration slurry transportation line, 7... Dehydrator, 8... Dehydrated water drainage line, 9... Dehydrated cake transportation line, 9a... Transportation line for coarse cut dehydrated cake, 10... Slurry adjustment tank, 11...
... Tank for adjusted water, 12 ... Supply line for adjusted water, 13 ... Tank for additives, 14 ... Supply line for additives, 15 ... Transport line for adjusted high concentration slurry, 16 ... Distributor, 17 ... Return circulation line for return adjustment high concentration slurry, 18 ... Ultra-fine grinding mill, 19 ... Ultra-fine grinding mill adjustment water tank, 20
... Super beautiful grinding mill conditioned water supply line, 21...
Tank for ultrafine powder mill additives, 22... Supply line for ultrafine mill additives, 23... Return circulation line for slurry containing ultrafine particles, 24... Transport line for product high concentration slurry, 25... Product Tank for high concentration slurry, 26... Clumping device, 27... Torque-equalized agglomeration device, 28... Transport line for small block-like dehydrated cake, 28a... Transport line for small block-like coarse cut dehydrated cake, 29... ... Classifier, 30... Discharge line for low concentration slurry containing coarse particles, 30a... Return circulation line for low concentration slurry containing coarse particles, 30b... Discharge line for diluted low concentration slurry containing coarse particles, 30c...
Return circulation line for diluted low concentration slurry containing coarse particles, 3
1... Transport line for coarse cut low concentration slurry, 3
1a... Transportation line for coarse cut diluted low concentration slurry, 32... Dilution tank, 33... Tank for dilution water, 34... Supply line for dilution water, 35... Transportation line for diluted low concentration slurry.
Claims (1)
低濃度石炭水スラリを作り、ついで上記低濃度石
炭水スラリを脱水し、得られる脱水ケーキをスラ
リ調整槽に導き、同スラリ調整槽で供給される調
整水、添加剤及び上記脱水ケーキを、返送されて
くる返送超微小粒含有石炭水スラリとともに混
合・撹拌しながら調整し、ついで上記スラリ調整
槽で得られる調整高濃度石炭水スラリを製品とし
て供給しかつ上記調整高濃度石炭水スラリの１部
を超微粉砕ミルに導き、同超微粉砕ミルで上記調
整高濃度石灰水スラリの石炭粒を超微粉砕しなが
ら摩砕して超微小粒含有石炭水スラリとしたのち
上記スラリ調整槽に返送循環させることを特徴と
する高濃度石炭水スラリの製造方法。1 Coarsely pulverized coal in water using a coarse pulverizing mill to create a low concentration coal water slurry, then the above low concentration coal water slurry is dehydrated, the resulting dehydrated cake is led to a slurry adjustment tank, and The supplied adjusted water, additives, and the dehydrated cake are mixed and stirred together with the returned ultrafine particle-containing coal-water slurry, and then the adjusted high-concentration coal-water slurry obtained in the slurry adjustment tank is adjusted. A part of the adjusted high-concentration coal-water slurry is supplied as a product and led to an ultra-fine grinding mill, where the coal particles in the adjusted high-concentration lime-water slurry are ground while being ultra-finely pulverized. A method for producing a highly concentrated coal-water slurry, which comprises forming a coal-water slurry containing fine particles and then circulating the slurry back to the slurry adjustment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26578784A JPS61143493A (en) | 1984-12-17 | 1984-12-17 | Production of coal-water slurry of high concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26578784A JPS61143493A (en) | 1984-12-17 | 1984-12-17 | Production of coal-water slurry of high concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61143493A JPS61143493A (en) | 1986-07-01 |
| JPH0552879B2 true JPH0552879B2 (en) | 1993-08-06 |
Family
ID=17422035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26578784A Granted JPS61143493A (en) | 1984-12-17 | 1984-12-17 | Production of coal-water slurry of high concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61143493A (en) |
-
1984
- 1984-12-17 JP JP26578784A patent/JPS61143493A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61143493A (en) | 1986-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04220494A (en) | Manufacture of highly concentrated coal/water slurry | |
| JPH0552879B2 (en) | ||
| JPH0576987B2 (en) | ||
| JPH0552359B2 (en) | ||
| JPS61115996A (en) | Preparation of high-concentration coal/water slurry | |
| JPH0469675B2 (en) | ||
| JPH0439514B2 (en) | ||
| JPH0439515B2 (en) | ||
| JPH0576991B2 (en) | ||
| JPH0576988B2 (en) | ||
| JPH04372691A (en) | Production of highly concentrated aqueous slurry of coal | |
| JPH0576986B2 (en) | ||
| JPH0576989B2 (en) | ||
| JPH0576992B2 (en) | ||
| JPS6236492A (en) | Production of high-concentration coal-water slurry | |
| JPH0552358B2 (en) | ||
| JPH0576985B2 (en) | ||
| JPH0552357B2 (en) | ||
| JPH0576990B2 (en) | ||
| JPS60215096A (en) | Production of highly concentrated coal/water slurry | |
| JPH0439513B2 (en) | ||
| JPS6236493A (en) | Production of high-concentration coal-water slurry | |
| JPS60221490A (en) | Production of aqueous slurry of coal in high concentration | |
| JPS60156795A (en) | Manufacture of highly concentrated coal-water slurry | |
| JPS60238391A (en) | Production of aqueous slurry of coal in high concentration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |