JPS6234993A - Production of coal water slurry in high concentration - Google Patents
Production of coal water slurry in high concentrationInfo
- Publication number
- JPS6234993A JPS6234993A JP17491385A JP17491385A JPS6234993A JP S6234993 A JPS6234993 A JP S6234993A JP 17491385 A JP17491385 A JP 17491385A JP 17491385 A JP17491385 A JP 17491385A JP S6234993 A JPS6234993 A JP S6234993A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- slurry
- concentration
- water slurry
- deashed
- 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
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- Crushing And Grinding (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
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、特に
脱灰システムを採用することによってスラリの性状を良
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] [Field of Industrial Application] The present invention relates to a method for producing highly concentrated coal-water slurry, and particularly to a method for improving the properties of the slurry by employing a deashing system. be.
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 a mixture of 60-90% by weight of finely ground coal and 10-40% by weight of water, with some additives added, and is a fluid fuel that can be combusted as is in a boiler etc. without dehydration. By turning coal, which is a solid fuel, into a fluid, the scope of its use will be dramatically expanded. 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種類があった。Conventionally, there have been three types of methods for producing high concentration slurry: a dry method, a high concentration wet method, and a 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・攪拌（以下、混合攪拌
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、高濃度湿式法はチューブミルに石炭。In addition, the high concentration wet method uses coal in a tube mill.
水及び添加剤を同時に投入し、微粉砕と混合攪拌を同時
に行うものである。Water and additives are added at the same time, and pulverization and mixing and stirring are performed at the same time.
さらに、低濃度湿式法はチューブミルに石炭と水とを投
入して低濃度で微粉砕し、いったん石炭２０〜６０重量
％と水４ｏ〜８０重量％の低濃度スラリとしてのち、こ
れを脱水機にて脱水して脱水ケーキとし、これを混合攪
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
合攪拌して高濃度スラリとするものである。Furthermore, in the low-concentration wet method, coal and water are put into a tube mill and pulverized at a low concentration to form a low-concentration slurry of 20-60% by weight of coal and 40-80% by weight of water, which is then processed into a dehydrator. The cake is dehydrated to form a dehydrated cake, which is again mixed and stirred together with a small amount of adjusted water and additives in a mixer to form a highly concentrated slurry.
第１１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。What is illustrated in FIG. 11 is a flow sheet relating to a conventional method for producing a low-concentration wet high-concentration slurry.
第１１図において、ａは石炭の供給用貯留槽。In FIG. 11, a is a storage tank for supplying coal.
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で脱水して得られた脱氷水の排水ライン
、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は混合攪拌機、には混
合攪拌機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は混合攪拌ｔａｊに添加剤
を供給ラインｎを介し供給する添加剤用のタンク、０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（以
下製品スラリ用タンクと記す）である。b is the coal supply line, C is the tank for mill supply water, d
is the mill supply water supply line, e is the wet mill, f is the transport line for the low concentration slurry obtained in the wet mill e, g is the dehydrator, and h is the drainage of de-iced water obtained by dehydration in the dehydrator g. line, i is a transport line for the slurry obtained by dehydration with dehydrator g (hereinafter referred to as dehydrated cake), j is a mixing agitator, and regulated water is supplied to mixing agitator j via the regulated water supply line l. m is a tank for adjusting water to be mixed and stirred, m is a tank for additives that supplies additives to the mixing and stirring taj via supply line n, 0 is a transport line for the high concentration slurry that is the product, and p is the tank for the high concentration slurry that is the product. A combustion means such as a storage tank or a boiler (hereinafter referred to as a product slurry tank).
このようなフローシ−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によって脱水機
ｇへ供給する。脱水機ｇでは低濃度スラリを脱水し。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 through line f. Dehydrator G dehydrates the low concentration slurry.
脱氷水はラインｈから排水し、脱水ケーキはラインｉを
介して混合攪拌機ｊに供給する。この混合攪拌機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
混合攪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。The de-icing water is drained through line h and the dehydrated cake is fed through line i to mixer j. In this mixer j, the supplied dehydrated cake is mixed and stirred with the adjustment water and additives supplied from tanks k and m via lines l and n to form a highly concentrated slurry with low viscosity, which is then used as a product. It is supplied from the high concentration slurry line O to the product slurry tank p.
ｈＸ゛
〔発明ば解決しようとする問題点〕
このような従来の低濃度湿式性高濃度スラリの製造方法
においては、混合攪拌機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９湿式ミルｅで石炭を粗粉
砕し脱水したのち調整水と添加剤とを供給して調整した
ものであるから２次のような問題点があった。hX゛ [Problem to be solved by the invention] In such a conventional method for producing a low-concentration wet high-concentration slurry, the high-concentration slurry that comes out as a product from the mixer j through the line O is a 9-wet process. Since the coal was coarsely pulverized and dehydrated in Mill E, and then conditioned water and additives were supplied thereto, there were the following problems.
（イ）混合攪拌されたままなので、製品スラリ中に添加
剤が均一に分散されてなくて、また製品スラリの品質に
むらがあった。(a) Since the additives were still being mixed and stirred, the additives were not uniformly dispersed in the product slurry, and the quality of the product slurry was uneven.
（ロ）混合攪拌機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
のみであるので石炭粒の形状は角ぼっており、したがっ
て添加剤と混合攪拌した場合、添加剤がうまく分散しな
かった。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った
。(b) The highly concentrated slurry that comes out as a product from the mixer j through the line O is obtained by only coarsely pulverizing the coal in the wet mill e, so the shape of the coal grains is square, and therefore it cannot be mixed with additives. The additives did not disperse well when stirred. For this reason, the effect of the additive cannot be fully demonstrated,
Furthermore, it was not possible to obtain a highly concentrated slurry with low viscosity.
（７１）高濃度スラリ中には粉砕時に発生する漱小遊離
灰（以下灰分と記す）が含まれているためスラリ単位重
量当たりの発熱量が小さい。(71) The high concentration slurry contains small free ash (hereinafter referred to as ash) generated during crushing, so the calorific value per unit weight of the slurry is small.
また、その灰分のためボイラ内燃焼の際バーナ中のつま
りを生じ、高濃度スラリの安定供給を明害することもあ
った。さらに、その灰分によって燃焼後の多量の灰分が
発生し。In addition, the ash content caused clogging in the burner during combustion in the boiler, which sometimes interfered with the stable supply of high-concentration slurry. Furthermore, a large amount of ash is generated after combustion due to the ash content.
′ 特にボイラ内燃焼においてはその多量の灰分の処理
のため灰処理設備が大型化しまた処理に多大の作業を要
していた。' Particularly in the case of combustion in a boiler, the large amount of ash must be processed, which requires large ash processing equipment and requires a great deal of work.
このように、従来の低濃度湿式性高濃度スラリの製造方
法においては、混合攪拌機ｊからライン０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かがあった。As described above, in the conventional method for manufacturing low-concentration wet high-concentration slurry, there is a problem in that the high-concentration slurry that comes out as a product from mixer j through line 0 has variations, that is, uniformity of quality. As a result, when used in boilers, etc., 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
造方法の諸問題を解消し、燃焼前に石炭に含まれる灰分
を除いてスラリ単位重量当りの発熱量が大きい燃料とな
るとともに従来石炭のボイラ内燃焼によって生じていた
多量の灰分処理を不必要としてかつ灰付着によるトラブ
ルを排除し、しかも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して提供するものである。The present invention solves the problems of the conventional low-concentration wet high-concentration slurry manufacturing method described above, and removes the ash contained in coal before combustion to produce a fuel with a large calorific value per unit weight of slurry. The purpose of the present invention is to eliminate the need for processing a large amount of ash produced by combustion in a boiler, eliminate troubles due to ash adhesion, and obtain a high-quality, highly concentrated slurry with low viscosity and uniformity.
本発明の第１発明は２石炭を水中で＊■粉砕して低濃度
スラリを作り、ついで上記低濃度スラリを脱灰したのち
脱水し、得られる脱灰脱水ケーキを混合攪拌機に導き、
同混合攪拌機で供給される調整水、添加剤とともに混合
攪拌して混練高濃度脱灰スラリを作り、さらに上記混練
高濃度脱灰スラリを分散機に導き、同分散機で上記添加
剤を上記混練高濃度脱灰スラリ中に均一に分散させ、得
られる分散高濃度脱灰スラリをさらにスラリ調整槽にて
調整することを特徴とする高濃度スラリの製造方法であ
る。The first aspect of the present invention is to crush two coals in water to create a low-concentration slurry, then deash the low-concentration slurry, dehydrate it, and introduce the resulting deashed and dehydrated cake to a mixer;
Mix and stir the adjusted water and additives supplied by the mixing agitator to create a kneaded high-concentration demineralized slurry.The kneaded high-concentration demineralized slurry is then led to a dispersion machine, where the additives are mixed with the above-mentioned additives. This method of producing a high concentration slurry is characterized by uniformly dispersing the slurry in a high concentration deashing slurry, and further adjusting the resulting dispersed high concentration deashing slurry in a slurry adjustment tank.
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粗粉砕時
に発生する灰分および水分が多いのでこのままではボイ
ラ等での燃焼効率に悪影響を与えるため、また混合攪拌
機で得られるスラリの水分濃度を均一化するために脱灰
したのち脱水する。この脱灰したのち脱水して得られる
脱灰脱水ケーキを混合攪拌機に導く。Coal and water are supplied to a coarse grinding mill for coarse grinding to produce a low concentration slurry with a high moisture content. This low-concentration slurry contains a lot of ash and moisture generated during coarse pulverization, so if left as is, it will have a negative effect on combustion efficiency in boilers, etc., and in order to equalize the moisture concentration of the slurry obtained with a mixing agitator, it is deashed. Dehydrate. The deashed and dehydrated cake obtained by deashing and dewatering is introduced into a mixing agitator.
混合攪拌機には、スラリの水分濃度調整のための調整水
、添加剤及び上記脱灰脱水ケーキとを一緒に混合攪拌し
ながら混練高濃度脱灰スラリを得る。In the mixer, adjusting water for adjusting the water concentration of the slurry, additives, and the deashing and dewatering cake are mixed and stirred together to obtain a highly concentrated deashing slurry.
この混練高濃度脱灰スラリは分散機に送り込み高速剪断
を与えて上記添加剤を上記混練高濃度脱灰スラリ中に均
一に分散させる。ついで、この分散高濃度脱灰スラリを
スラリ調整槽に送り込み調整して粘性の低い均一性のあ
る良質の調整高濃度脱灰スラリを得る。This kneaded high-concentration demineralized slurry is fed into a dispersing machine and subjected to high-speed shearing to uniformly disperse the additives in the kneaded high-concentration demineralized slurry. Next, this dispersed high concentration demineralized slurry is sent to a slurry conditioning tank and adjusted to obtain a high quality adjusted high concentration demineralized slurry with low viscosity and uniformity.
本発明の第１発明の好ましい実施例を第１図に図示する
実施例で詳述する。A preferred embodiment of the first aspect of the present invention will be described in detail with reference to the embodiment illustrated in FIG.
第１図に図示する実施例は、第１発明に係る実施例のフ
ローシイートである。The embodiment illustrated in FIG. 1 is a flow sheet of the embodiment according to the first invention.
第１図において、■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）。In Figure 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は微小気泡を混入した浮」二分離などによって脱灰
操作を行う脱灰装置、８は脱灰装置７で得られた灰分の
排出ライン、９は脱灰装置７で得られる低濃度脱灰スラ
リの輸送ライン、１０は脱水機、１１は脱水機１０で得
られ巴
る脱氷水の排水ライン、１２は脱水機１０で得られる脱
灰脱水ケーキの輸送ライン、１３は混合攪拌機、１４は
混合攪拌機１３の脱灰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、１５は調整水の供給ライン、１６は混合攪拌機
１３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（以下添加剤タンクと記す）、
１７は添加剤の供給ライン、１８は混合攪拌機１３で混
合攪拌され混練された混練高濃度脱灰スラリの輸送ライ
ン、１９はラインミキサなどの分散機、２０は分散８１
９で機内のスラリか高速剪断が与えられ添加剤が均一に
分散されて得られた分散高濃度脱灰スラリス５°〕
の輸送ライン、２１は芙隼；調整槽、２２はスラリ調整
槽２１で濃度のバラツキがさらに均一化された調整高濃
度脱灰スラリの輸送ラインでかつ製品として又は次の工
程へ供給される高品質の高濃度脱灰スラリ （以下製品
高濃度脱灰スラリと記す）の輸送ライン、２３は製品と
して又は次工程へ供給する製品高濃度脱灰スラリを貯留
するタンク（以下製品高濃度脱灰スラリ用のタンクと記
す）である。なお、ライン２２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が、この事につい
ての説明は以下同様なので省略する。なお、このフロー
シイートにおいて必要な輸送ポンプ等は省略されている
。6 is a transportation line for the low-concentration slurry obtained in the coarse grinding mill 5, 7 is a deashing device that performs deashing operations by separating the ash mixed with microbubbles, and 8 is a transport line for the ash obtained in the deashing device 7. A discharge line, 9 is a transportation line for the low concentration demineralized slurry obtained in the deashing device 7, 10 is a dehydrator, 11 is a drainage line for deicing water obtained in the dehydrator 10, and 12 is a drainage line for deicing water obtained in the dehydrator 10. 13 is a mixing agitator; 14 is an adjustment water tank for storing water (hereinafter referred to as adjustment water) supplied to adjust the moisture concentration of the deashing slurry of the mixing agitator 13; 15 is a transport line for the deashed and dehydrated cake; A supply line for adjusted water; 16 is a tank (hereinafter referred to as an additive tank) for storing additives such as surfactants (hereinafter referred to as additives) to be supplied to the mixing agitator 13;
17 is an additive supply line, 18 is a transport line for the kneaded high-concentration demineralized slurry mixed and kneaded by the mixing agitator 13, 19 is a dispersion machine such as a line mixer, and 20 is a dispersion 81
9 is a transportation line for the slurry in the machine or a dispersed high-concentration demineralized slurry obtained by applying high-speed shearing and uniformly dispersing additives. 21 is a Fuhaya; adjustment tank; 22 is a slurry adjustment tank 21; High-quality high-concentration demineralized slurry (hereinafter referred to as product high-concentration demineralized slurry) that is supplied as a product or to the next process on a transportation line for adjusted high-concentration demineralized slurry in which variations in concentration are further made uniform. The transportation line 23 is a tank (hereinafter referred to as a tank for product high concentration demineralized slurry) that stores product high concentration demineralized slurry to be supplied as a product or to the next process. Note that the line 22 may be directly connected to a combustion means such as a boiler (not shown), but a description of this will be omitted since it is the same below. Note that necessary transport pumps and the like are omitted in this flow sheet.
第１図に図示するこのような実施例において。In such an embodiment as illustrated in FIG.
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によって脱灰
袋Ｎ７に供給し、脱灰して得られる灰分はライン８から
排出し、一方低濃度脱灰スラリはライン９によって脱水
機ＩＯに供給する。そして、脱水機１０で脱水して生じ
る脱氷水はライン１１から排出し、一方脱灰脱水ケーキ
はライン１２を介して混合攪拌機１３に供給する。混合
攪拌機１３では脱灰脱水ケーキ、スラリの水分濃度を調
整するために調整水用タンク１４からライン１５を介し
て供給される調整水、添加剤用タンク１６からライン１
７を介して供給される添加剤を一緒に混合攪拌しながら
濃度などが適当なものになるように調整する。この混合
攪拌機１３で混合攪拌して得られる混練高濃度脱灰スラ
リをライン１８から分散機１９に送り込み高速剪断を与
えて添加剤を混練高濃度脱灰スラリ中に均一に分散させ
る。Coal in the coal storage tank 1 and coarse crushing mill feed water in the feed water tank 3 are supplied to the coarse crushing mill 5 via lines 2 and 4;
The coal is coarsely pulverized at a low concentration to produce a low concentration slurry containing 20 to 60% by weight of coal. This low concentration slurry is supplied to the deashing bag N7 through line 6, and the ash obtained by deashing is discharged through line 8, while the low concentration deashing slurry is supplied through line 9 to the dehydrator IO. The de-ice water produced by dehydration in the dehydrator 10 is discharged from the line 11, while the deashed and dehydrated cake is supplied to the mixer 13 through the line 12. The mixing agitator 13 receives a deashing and dewatering cake, conditioning water supplied from a conditioning water tank 14 via a line 15 to adjust the water concentration of the slurry, and a line 1 from an additive tank 16.
The additives supplied through step 7 are mixed and stirred together to adjust the concentration to an appropriate value. The kneaded high-concentration demineralized slurry obtained by mixing and stirring with the mixer 13 is sent from a line 18 to a dispersing machine 19 and subjected to high-speed shearing to uniformly disperse the additives in the kneaded high-concentration demineralized slurry.
ついで、この分散高濃度脱灰スラリをスラリ調整槽２１
に送り込み調整して粘性の低い均一性のある良質の調整
高濃度脱灰スラリを得る。スラリ調整槽２１から得られ
る調整高濃度脱灰スラリをライン２２に送り込み、製品
高濃度脱灰スラリとしてライン２２から製品高濃度脱灰
スラリ用のタンク２３に輸送して貯留する。Next, this dispersed high concentration demineralized slurry is transferred to the slurry adjustment tank 21.
to obtain a high-quality, highly concentrated demineralized slurry with low viscosity and uniformity. The adjusted high-concentration demineralized slurry obtained from the slurry adjustment tank 21 is sent to a line 22, and is transported as a product high-concentration demineralized slurry from the line 22 to a tank 23 for product high-concentration demineralized slurry, where it is stored.
以上、第１発明に係る実施例を示す第１図のフローシイ
ートに基づいて詳述したように第１発明によって次のよ
うな効果が得られる。As described above in detail based on the flow sheet of FIG. 1 showing the embodiment of the first invention, the following effects can be obtained by the first invention.
（１１粗粉砕ミルは、粉砕動力が最小となる低濃度（石
炭２０〜６０重量％）で粉砕を行うので。(11 Coarse pulverizing mills perform pulverization at a low concentration (20 to 60% by weight of coal) that minimizes the pulverizing power.
粉砕動力が最小の点で運転が可能となる。Operation is possible at the point where the crushing power is minimum.
（２）粗粉砕ミルで石炭を粗粉砕したのち脱灰するので
、粗粉砕によって生じる灰分が除去される。したがって
３製品である高濃度脱灰スラリには灰分が除去されてい
るのでスラリ単位重量当たりの発熱量が高くなる。また
、脱灰によって燃焼時におけるバーナ中の灰分によるつ
まりの心配もなくなり、高濃度脱灰スラリがバーナ火口
に安定に供給される。さらに。(2) Since the coal is coarsely crushed in a coarse crushing mill and then deashed, the ash produced by the coarse crushing is removed. Therefore, since the ash content has been removed from the high-concentration demineralized slurry, which is the third product, the calorific value per unit weight of the slurry is increased. In addition, deashing eliminates the fear of clogging due to ash in the burner during combustion, and highly concentrated deashing slurry is stably supplied to the burner nozzle. moreover.
従来燃焼後に多量に発生した灰分が燃焼時に除去される
ため灰処理設備を大型化する必要もな（また多大の灰処
理作業が省略される。Since the large amount of ash that was conventionally generated after combustion is removed during combustion, there is no need to increase the size of ash processing equipment (also, a large amount of ash processing work is omitted).
（３）粗粉砕ミルで石炭を粗粉砕した低濃度スラリ中に
含まれる灰分を脱灰したのち脱水するので、脱水工程が
円滑に効率良く行われる。(3) Since the ash contained in the low concentration slurry obtained by coarsely pulverizing coal in a coarse pulverizing mill is deashed and then dehydrated, the dehydration process is carried out smoothly and efficiently.
（４）混合攪拌機で得られる混練高濃度脱灰スラリを分
散機にかけて分散したのちスラリ調整槽で調整する（以
下“混練−分散−調整”と略記する。）ので添加剤がス
ラリ中に均一に分散されておりしかも濃度がきわめて均
一化されているため良品質の均一化ささた製品高濃度脱
灰スラリを得ることが出来る。(4) The kneaded high-concentration demineralized slurry obtained with the mixer is dispersed in the disperser and then adjusted in the slurry adjustment tank (hereinafter abbreviated as "kneading-dispersion-adjustment"), so that the additives are uniformly distributed in the slurry. Since it is dispersed and the concentration is extremely uniform, it is possible to obtain a high-concentration demineralized slurry of good quality and homogenized product.
（５）石炭を粗粉砕ミルで粗粉砕したものを脱灰したの
ち脱水するので、脱水機の脱水性能が著しく向上し、ま
た脱灰脱水ケーキ中の水分が減少するので、その後の高
濃度脱灰スラリの水分を低目におさえることが出来る。(5) Coal is coarsely pulverized in a coarse pulverization mill, deashed and then dehydrated, so the dehydration performance of the dehydrator is significantly improved, and the water content in the deashed and dehydrated cake is reduced, resulting in subsequent high-concentration dehydration. The moisture content of the ash slurry can be kept low.
また。Also.
水分の調整濃度を広い範囲で選ぶことが出来る。The water concentration can be selected from a wide range.
次に本発明の第１実施例のフロシイートに付加されるも
のとして破線及び一点鎖線について説明する。Next, broken lines and dashed-dotted lines will be explained as additions to the flosheat of the first embodiment of the present invention.
破線２４は脱水機１０で得られたライン１１から排出さ
れる脱水水を粗粉砕ミル５に供給する水として利用する
ように返送するラインである。また、一点鎖線２５は同
じく脱水機１ｏで得られラインから排出される脱氷水を
混合攪拌機１３に供給する調整水に利用するように調整
水用タンク１４に送給するラインである。A broken line 24 is a line for returning the dehydrated water discharged from the line 11 obtained by the dehydrator 10 to be used as water to be supplied to the coarse grinding mill 5. Further, a dashed line 25 is a line for feeding the de-iced water obtained by the dehydrator 1o and discharged from the line to the adjusted water tank 14 so as to be used as adjusted water to be supplied to the mixer agitator 13.
そして、このライン２４．２５は必要に応じてライン２
４のみ、ライン２５のみ、又はライン２４．ライン２５
の両者を同時に使用しても良いし、さらには図示は省略
するが１分散機１９、スラリ調整槽２１などとラインを
結んで脱水水の有効利用を図って良い。And this line 24.25 can be changed to line 2 as needed.
4 only, line 25 only, or line 24. line 25
Both may be used at the same time, or, although not shown, lines may be connected to the dispersion machine 19, slurry adjustment tank 21, etc. for effective use of dehydrated water.
このようにライン２４及び／又はライン２５を設けた実
施例によって次のような効果が得られる。The following effects can be obtained by the embodiment in which the lines 24 and/or the lines 25 are provided in this manner.
■脱水水中にはコロイド状の超微粉石炭粒子を含有する
ので、これを粗粉砕ミル５に供給して供給される石炭、
水と一緒に粗粉砕するので、製品高濃度脱灰スラリの擬
塑性が高くなり貯蔵安定性が良くなる。■Since the dehydrated water contains colloidal ultrafine coal particles, the coal is supplied to the coarse grinding mill 5,
Since it is coarsely pulverized together with water, the pseudoplasticity of the high-concentration demineralized slurry product is increased and its storage stability is improved.
■脱水水中にはコロイド状の超微粉石炭粒子を含有する
ので、これを混合攪拌機１３に供給して混合攪拌機１３
内の内容物と一緒に混合攪拌するのでレオロジン特性が
さらに擬塑性となりきわめて貯蔵安定性の良い製品高濃
度脱灰スラリを得ることが出来る。■Since the dehydrated water contains colloidal ultrafine coal particles, this is supplied to the mixing agitator 13.
Since the rheologin is mixed and stirred together with the contents in the container, the properties of the rheologin become even more pseudoplastic, making it possible to obtain a high-concentration demineralized slurry with extremely good storage stability.
なお、ライン２４及びライン２５の作用及び効果は以下
の実施例においても類似であるので各実施例に関する説
明は省略する。Note that the functions and effects of lines 24 and 25 are similar in the following embodiments, so explanations regarding each embodiment will be omitted.
次に２本発明の第２発明は、上記第１発明をさらに改良
するために提出されたものである。Next, the second invention of the present invention has been submitted to further improve the first invention.
すなわち、第２発明の特徴は第１発明において脱水機か
ら得られる脱灰脱水ケーキを混合攪拌機に導く前に塊砕
装置で微小な脱灰脱水ケーキに塊砕することにある。That is, the feature of the second invention is that in the first invention, the deashed and dehydrated cake obtained from the dehydrator is crushed into fine deashed and dehydrated cakes by a crushing device before being led to the mixing agitator.
以下２本発明の第２発明の好ましい実施例を第２図に図
示する実施例で詳述する。Hereinafter, two preferred embodiments of the second aspect of the present invention will be described in detail with reference to the embodiment illustrated in FIG.
第２図に図示する実施例は、第２発明に係る実施例のフ
ローシイートである。The embodiment illustrated in FIG. 2 is a flow sheet of the embodiment according to the second invention.
第２図に図示する実施例おいて、符号１及至２５は第１
図に図示する実施例における符号１及至２５と均等物で
あるので説明を省略する。In the embodiment illustrated in FIG.
Since they are equivalent to the reference numerals 1 to 25 in the embodiment shown in the figure, their explanation will be omitted.
そして、２６は塊砕装置であり、この塊砕装置２６でラ
イン１２を介して供給される板状又は塊状の脱灰脱水ケ
ーキを小塊状又は微小塊状に塊砕するものである。２７
はこの小塊状又は微小塊状の脱灰脱水ケーキ（以下小塊
状脱灰脱水ケーキと記す）を輸送するラインである。Reference numeral 26 denotes a crushing device, which crushes the plate-shaped or block-shaped demineralized and dehydrated cake supplied via the line 12 into small blocks or minute blocks. 27
is a line that transports the demineralized and dehydrated cake in the form of small or minute lumps (hereinafter referred to as the demineralized dehydrated cake in the form of small lumps).
第２図に図示するこのような実施例は、第１図に図示す
る実施例の場合において、脱水機１０で得られる脱灰脱
水ケーキをライン１２を介して塊砕装置２６に供給し板
状又は塊状の脱灰脱水ケーキを小塊状又は微小塊状に塊
砕して小塊状脱灰脱水ケーキとし、これを小塊状脱灰脱
水ケーキライン２７を介して混合攪拌機１３に供給する
点に特徴がある。In the embodiment shown in FIG. 2, in the case of the embodiment shown in FIG. Or, it is characterized in that a lumpy demineralized dehydrated cake is crushed into small lumps or micro lumps to form a small lump demineralized dehydrated cake, and this is supplied to the mixing agitator 13 via the small lump demineralized dehydrated cake line 27. .
以上、第２発明に係る実施例を示す第３図ののフローシ
イートに基づいて詳述したように。As described above in detail based on the flow sheet of FIG. 3 showing the embodiment according to the second invention.
第２発明は、第１発明で得られる上記（１１及至（５）
に記載の効果の他に次のような効果が得られる。The second invention is the above (11 to (5)) obtained in the first invention.
In addition to the effects described in , the following effects can be obtained.
（６）混合攪拌機に供給する脱灰脱水ケーキを小塊状に
塊砕して供給するために、混合攪拌機に供給されるスラ
リ混合攪拌のための調整水。(6) Conditioned water for slurry mixing and agitation that is supplied to the mixer and agitator in order to crush and feed the demineralized and dehydrated cake into small chunks to be supplied to the mixer and agitator.
添加剤との均一な混合攪拌及び調整がスムーズに行き良
質で均一な製品高濃度脱灰スラリを得ることが出来る。Uniform mixing, stirring, and adjustment with additives can be carried out smoothly to obtain a high-quality, uniform, high-concentration demineralized slurry.
（７）また、均一混合がスムーズに出来るので、製品高
濃度脱灰スラリの単位時１ｆｎ当たりの生産量が著しく
多くなり、したがって生産性が向上する。(7) Furthermore, since homogeneous mixing can be performed smoothly, the production amount of high-concentration demineralized slurry product per unit time of 1 fn is significantly increased, and therefore productivity is improved.
次に１本発明の第３発明は上記第１発明をさらに改良す
るために提供されたものである。Next, a third invention of the present invention is provided to further improve the first invention.
すなわち、第３発明の特徴は第１発明において、ＩＩ粗
粒砕ミルら得られる低濃度スラリを脱灰装置に導く前に
分級器で粗粒含有低濃度スラリと粗粒カット低濃度スラ
リとに分級し、粗粒カット低濃度スラリのみを脱灰装置
に導くことにある。That is, the feature of the third invention is that in the first invention, before introducing the low concentration slurry obtained from the II coarse grain crushing mill to the deashing device, it is divided into a coarse grain-containing low concentration slurry and a coarse grain cut low concentration slurry in a classifier. The purpose is to classify and guide only the coarse-grained, low-concentration slurry to the deashing equipment.
以下２本発明の第３発明の好ましい実施例を第３図及び
第４図に図示する実施例で詳述する。Hereinafter, two preferred embodiments of the third aspect of the present invention will be described in detail with reference to the embodiments illustrated in FIGS. 3 and 4.
第３図及び第４図に図示する実施例は、第３発明に係る
第１実施例及び第２実施例のフローシイートである。The embodiments illustrated in FIGS. 3 and 4 are flow sheets of the first embodiment and the second embodiment according to the third invention.
第３図及び第４図に図示する実施例において。In the embodiment illustrated in FIGS. 3 and 4.
符号１及至２５のうち同符号のものは第１図に図示する
実施例における符号１及至２５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
ット低濃度脱灰スラリの輸送ライン、１２ａは粗粒カッ
ト脱灰脱水ケーキの輸送ライン、２８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ット低濃度スラリとに分級する分級
器、２９は分級器２８で分級された粗粒含有低濃度スラ
リの排出ライン、３０は分級器２８で分級された粗粒カ
ット低濃度スラリの輸送ラインである。The same reference numerals 1 to 25 are equivalent to the same reference numerals 1 to 25 in the embodiment shown in FIG. 1, so their explanation will be omitted. 9a is a transport line for coarse grain cut low concentration demineralized slurry, 12a is a transport line for coarse grain cut demineralized dehydrated cake, and 28 is a transport line for separating coarse grains in the low concentration slurry supplied from line 6. 29 is a discharge line for the coarse grain-containing low concentration slurry classified by the classifier 28, and 30 is a coarse grain cut slurry classified by the classifier 28. This is a transportation line for concentrated slurry.
第３図に図示するこのような実施例は、第１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によって分級器２８に供給して粗粒
含有低濃度スラリと粗粒カット低濃度スラリとに分級し
、粗粒カット低濃度スラリのみをライン３０から脱灰装
置７に供給する点に特徴がある。In the embodiment shown in FIG. 3, in the case of the embodiment shown in FIG. It is characterized in that it is classified into low concentration slurry and coarse cut low concentration slurry, and only the coarse cut low concentration slurry is supplied to the deashing device 7 from line 30.
以上、第３発明に係る第１実施例を示す第３図のフロー
シイートに基づいて詳述したように第３発明は、第１発
明で得られる上記ｉｌｌ及至反型）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. 3 showing the first embodiment according to the third invention, the third invention has the following advantages: The following effects can be obtained.
（８）分級器で分級し、粗粒カット低濃度脱灰スラリの
みを製品の製造ラインに供給するので。(8) It is classified using a classifier and only coarse-grained, low-concentration demineralized slurry is supplied to the product manufacturing line.
製品高濃度脱灰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脱
灰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。The product high-concentration demineralized slurry has very few coarse particles and increases the number of fine or ultra-fine coal particles, so that the rheological properties of the product high-concentration demineralized slurry become pseudoplastic and storage stability is improved.
（９）分級器で分級するので製品高濃度脱灰スラリ中の
粗粒の最大径を任意に選ぶことが出来る。(9) Since classification is performed using a classifier, the maximum diameter of the coarse particles in the highly concentrated demineralized slurry can be arbitrarily selected.
しだがって、所望の粒度分布の製品高濃度脱灰スラリを
得ることが容易になる。Therefore, it becomes easy to obtain a highly concentrated product demineralized slurry with a desired particle size distribution.
００１分級器で分級し、粗粒カット低濃度脱灰スラリの
みを製品の製造ラインに供給するので。It is classified using a 001 classifier and only coarse-grained, low-concentration demineralized slurry is supplied to the product manufacturing line.
製品高濃度脱灰スラリ中の粗粒が非常に少なくなる。し
たがって、ボイラ等の燃焼手段で燃焼させた場合に、未
燃炭分が極めて少なくなりボイラ内の残滓も殆どなくな
ってしかも燃焼効率が良（なる。Coarse particles in the high-concentration demineralized slurry are greatly reduced. Therefore, when the coal is combusted in a combustion means such as a boiler, the amount of unburned coal is extremely reduced, there is almost no residue in the boiler, and the combustion efficiency is improved.
また、第４図は第３発明の第２実施例であり。Further, FIG. 4 shows a second embodiment of the third invention.
分級器２８で得られる籾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２９ａを介して粗粒砕ミ
ル５に返送し、含有されている粗粒をさらに粗粒砕ミル
５で細小又は微小石炭粒に粉砕するものである。The rice grain-containing low concentration slurry obtained in the classifier 28 is returned to the coarse grain crushing mill 5 via the coarse grain containing low concentration slurry return circulation line 29a, and the contained coarse grains are further passed through the coarse grain crushing mill 5. It is used to crush coal into fine or minute coal particles.
このように、第４図に図示する第３発明の第２実施例で
は次の効果がさらに得られる。In this way, the second embodiment of the third invention illustrated in FIG. 4 further provides the following effects.
■粗粒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、製品高濃度脱灰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脱灰スラリのレオロジー特性が非常
に擬塑性となり貯蔵安定性が向上する。■As the coarse particle-containing low concentration slurry is coarsely ground again in the coarse grinding mill 5, the coarse particles in the product high concentration demineralized slurry become even smaller, while the fine and ultra-fine coal particles increase. The rheological properties of the high-concentration demineralized slurry become extremely pseudoplastic, improving storage stability.
■分級器２８で分級し、 Ｉｌ１粒含有低濃慶大ラリは
再度粗粉砕ミル５で粉砕するので、製品高濃度脱灰スラ
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
。したがって、所望の粒度分布の製品高濃度脱灰スラリ
を得ることがきわめて容易になる。(2) Since the low-concentration Keidai lari containing 1 grain of Il is classified by the classifier 28 and crushed again by the coarse grinding mill 5, the maximum diameter of the coarse grains in the product high-concentration demineralized slurry can be selected very arbitrarily. Therefore, it becomes extremely easy to obtain a highly concentrated product demineralized slurry with a desired particle size distribution.
（５）分級器２８で分級し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、製品高濃度脱灰スラリ中
の＊Ｉ粒が非常に少なくなる。(5) Since the coarse particle-containing low concentration slurry classified by the classifier 28 is crushed again by the coarse grinding mill 5, the *I particles in the product high concentration demineralized slurry are extremely reduced.
したがって、ボイラ等の燃焼手段で燃焼させた場合に、
未燃炭分がさらに極めて少な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。Therefore, when burned in a combustion means such as a boiler,
The amount of unburned coal is further reduced, the amount of residue in the boiler is also reduced, and the combustion efficiency is further improved.
次に１本発明の第４発明は２本発明の第２発明及び第３
発明が有する効果の相乗効果をねらってさらに良質の製
品高濃度脱灰スラリを得る目的で提供されたものである
。Next, the fourth invention of the present invention is the second invention of the present invention and the third invention of the present invention.
This invention was provided for the purpose of obtaining a high-concentration demineralized slurry of even better quality by achieving a synergistic effect of the effects of the invention.
すなわち、第４発明の特徴は第２発明及び第３発明にお
いて、粗粉砕ミルから得られる低濃度スラリを脱灰装置
に導く前に分級器で粗粒含有低濃度スラリと粗粒カット
低濃度スラリとに分級し、粗粒カット低濃度スラリのみ
を脱灰装置に導いたのち脱水機に導くことと、脱水機か
ら得られる粗粒カット脱灰脱水ケーキを混合攪拌機に導
く前に塊砕装置で微小な脱灰脱水ケーキを塊砕すること
にある。That is, the feature of the fourth invention is that in the second and third inventions, before the low concentration slurry obtained from the coarse grinding mill is led to the deashing device, the low concentration slurry containing coarse particles and the low concentration slurry cut coarse particles are separated in a classifier. The coarse cut, low-concentration slurry is passed through a deashing device and then to a dehydrator, and the coarse cut, deashed and dehydrated cake obtained from the dehydrator is passed through a crusher before being led to a mixing agitator. The purpose is to crush minute demineralized and dehydrated cakes.
以下１本発明の第４発明の好ましい実施例を第５図及び
第６図に図示する実施例で詳述する。Hereinafter, a preferred embodiment of the fourth aspect of the present invention will be described in detail with reference to the embodiment illustrated in FIGS. 5 and 6.
第５図及び第６図に図示する実施例は、第４発明に係る
第１実施例及び第２実施例のフローシイートである。The embodiments illustrated in FIGS. 5 and 6 are flow sheets of the first embodiment and the second embodiment according to the fourth invention.
第５図及び第６図に図示する実施例において。In the embodiment illustrated in FIGS. 5 and 6.
符号ｌ反型３０のうちの同符号のものは第１図反型第５
図に図示する実施例における符号１及至３０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は粗粒カット低濃度脱灰スラリの輸送ライン、１２
ａは粗粒カット脱灰脱水ケーキの輸送ライン、２７ａは
小塊状粗粒カット脱灰脱水ケーキの輸送ラインである。Among the 30 anti-molds, those with the same sign are shown in Fig. 1.
Since they are equivalent to those of the same reference numerals 1 to 30 in the embodiment shown in the figures, their explanation will be omitted. In addition,
9a is a transportation line for coarse cut low concentration demineralized slurry, 12
27a is a transportation line for the coarse cut, demineralized and dehydrated cake, and 27a is a transportation line for the coarse cut, demineralized and dehydrated cake.
第５図に図示するこのような実施例は、第２図反型第４
図に図示する実施例の場合において。Such an embodiment as illustrated in FIG.
In the case of the embodiment illustrated in the figure.
粗粉砕ミル５で得られる低濃度スラリをライン６によっ
て分級器２８に供給して粗粒含有低濃度スラリと粗粒カ
ット低濃度スラリとに分級し。The low concentration slurry obtained by the coarse grinding mill 5 is supplied to a classifier 28 through a line 6 and is classified into a coarse particle-containing low concentration slurry and a coarse particle cut low concentration slurry.
粗粒カット低濃度スラリのみをライン３ｏから脱灰装置
７に供給すること及び脱水機】０で得られる粗粒カット
脱灰脱水ケーキはライン１２ａを介して塊砕装置２６に
供給し、板状又は塊状の脱灰脱水ケーキを小塊状又は微
小塊状に塊砕して小塊状脱灰脱水ケーキとし、これをラ
イン２７ａを介して混合攪拌機１３に供給する点に特徴
がある。Supplying only the coarse grain cut low concentration slurry to the deashing device 7 from the line 3o and the dewatering machine] The coarse grain cut deashing and dewatering cake obtained in step 0 is supplied to the crushing device 26 through the line 12a, and is crushed into a plate shape. Alternatively, the deashing and dewatering cake in the form of a lump is crushed into small lumps or micro lumps to form a small lump deashing and dehydrating cake, which is then supplied to the mixer agitator 13 via the line 27a.
以上、第４発明に係る実施例を示す第５図のフローシイ
ートに基づいて詳述したように、第４発明は第１発明反
型第３発明で得られる上記（１）及至００１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. 5 showing the embodiment according to the fourth invention, the fourth invention has the effects described in (1) to 001 above obtained by the first invention anti-mold third invention. In addition, the following effects can be obtained.
θυ脱灰、脱水する前に分級し、粗粒カット低濃度脱灰
スラリのみを脱水し、さらに脱水後の板状又は塊状の粗
粒カット脱灰脱水ケーキを塊砕装置で小塊状に塊砕して
混合攪拌機に供給するため、良質な製品高濃度脱灰スラ
リを得ることが出来る。θυ Deashing, classifying before dehydration, dewatering only the coarse cut low concentration demineralized slurry, and then crushing the plate-shaped or lump-like coarse cut demineralized dehydrated cake into small lumps with a crusher after dehydration. Since the demineralized slurry is then fed to the mixing agitator, it is possible to obtain a high-quality, high-concentration demineralized slurry.
また、第６図は、第４発明の第２実施例であり、第５図
に図示する第４発明の第１実施例に。Further, FIG. 6 shows a second embodiment of the fourth invention, which corresponds to the first embodiment of the fourth invention illustrated in FIG.
上記第３発明の第２実施例を図示する第４図のフローシ
イートで説明した構成２作用を付加して、上記■及至■
に記載した効果のほかに次の効果をねらったものである
。By adding the configuration 2 effect explained in the flow sheet of FIG. 4 illustrating the second embodiment of the third invention, the above
In addition to the effects described in , it aims to achieve the following effects.
■脱灰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、粗粒カット低濃度スラ
リのみを脱灰脱水し、さらに脱水後の板状又は塊状の粗
粒カット脱灰脱水ケーキを塊砕装置２６で小塊状に塊砕
して混合攪拌機１３に供給するため、良質な製品高濃度
脱灰スラリを容易に得ることが出来る。■Before deashing and dewatering, the low concentration slurry containing coarse particles is classified and sent back to the coarse grinding mill 5 and crushed again, and only the coarse cut low concentration slurry is deashed and dehydrated. Since the coarse cut demineralized and dehydrated cake is crushed into small pieces by the crusher 26 and supplied to the mixer agitator 13, a high-quality product and highly concentrated demineralized slurry can be easily obtained.
次に本発明の第５発明は１本発明の第３発明をさらに改
良したものである。Next, the fifth invention of the present invention is a further improvement of the third invention of the first invention.
すなわち、第５発明の特徴は第３発明において、ネ■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
に導くことにある。That is, the feature of the fifth invention is that in the third invention, (i) the low concentration slurry obtained from the grinding mill is diluted with dilution water before being led to the classifier, and then this diluted low concentration slurry is led to the classifier; be.
以下２本発明の第５発明の好ましい実施例を第７図及び
第８図に図示する実施例で記述する。Two preferred embodiments of the fifth aspect of the present invention will be described below with reference to the embodiments illustrated in FIGS. 7 and 8.
第７図及び第８図に図示する実施例は、第５発明に係る
第１実施例及び第２実施例のフローシイートである。The embodiments illustrated in FIGS. 7 and 8 are flow sheets of the first embodiment and the second embodiment according to the fifth invention.
第７図及び第８図に図示する実施例において。In the embodiment illustrated in FIGS. 7 and 8.
符号ｌ反型３０のうち同符号のものは第１図反型第６図
に図示する実施例における符号１及至３０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。そして、
９ｂはネ■粒カット希釈低濃度脱灰スラリの輸送ライン
、１２ａは粗粒カット脱灰脱水ケーキの輸送ライン、２
９ｂは粗粒含有希釈低濃度スラリの排出ライン、３０ａ
は粗粒カット希釈低濃度スラリの輸送ライン、３１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、３２は希釈
水用のタンク。The same reference numerals among the reference numerals 1 and 30 are equivalent to the same reference numerals among the reference numerals 1 to 30 in the embodiment shown in FIG. 1 and FIG. and,
9b is a transport line for the coarse grain cut diluted low concentration demineralized slurry, 12a is a transport line for the coarse grain cut demineralized dehydrated cake, 2
9b is a discharge line for diluted low concentration slurry containing coarse particles, 30a
31 is a dilution tank for diluting the low concentration slurry supplied via line 6 to a concentration that is easy to classify with dilution water, and 32 is a tank for dilution water.
３３は希釈水タンク３２の希釈水を供給する希釈水の供
給ライン、３４は希釈用タンク３１で希釈されて得られ
る石炭１５〜４０重量％、水６０〜８５重量％低濃度ス
濃度 （以下、希釈低濃度スラリと記す）を輸送するラ
インである。33 is a dilution water supply line that supplies dilution water from the dilution water tank 32, and 34 is a dilution water supply line that supplies 15 to 40% by weight of coal and 60 to 85% by weight of water obtained by diluting it in the dilution tank 31. This line transports diluted low concentration slurry).
第７図に図示するこのような実施例は、第３図に図示す
る実施例の場合において、粗粉砕ミル５で得られる低濃
度スラリをライン６によって希釈用タンク３１に導き、
この希釈用タンク３１でタンク３２からライン３３を介
して供給される希釈水で分級しやすい濃度まで薄める。Such an embodiment illustrated in FIG. 7 is different from the embodiment illustrated in FIG.
In this dilution tank 31, dilution water is supplied from a tank 32 through a line 33 to dilute it to a concentration that can be easily classified.
すなわち１石炭１５〜４０重量％の希釈低濃度スラリに
する。この希釈濃度スラリをライン３４によって分級器
２８に供給してネ■粒含有希釈低濃度スラリと粗粒カッ
ト希釈低濃度スラリに分級する。そして、この粗粒カッ
ト希釈低濃度スラリをライン３０ａから脱灰装置７に供
給する点に特徴がある。That is, it is made into a diluted low concentration slurry of 15 to 40% by weight per coal. This diluted concentration slurry is supplied to the classifier 28 through a line 34 and is classified into a diluted low concentration slurry containing grains and a diluted low concentration slurry containing coarse grains. The present invention is characterized in that this coarse grain cut diluted low concentration slurry is supplied to the deashing device 7 from the line 30a.
また、第８図は第５発明の第２実施例であり。Further, FIG. 8 shows a second embodiment of the fifth invention.
分級器２８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２９Ｃ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
。The coarse grain-containing diluted low concentration slurry obtained in the classifier 28 is returned to the coarse grinding mill 5 via the coarse grain diluted low concentration slurry return circulation line 29C, and the contained coarse particles are further passed through the coarse grinding mill 5. It is used to crush coal into fine or minute coal particles.
以上、第５発明に係る実施例を示す第７図及び第８図の
フローシイートに基づいて詳述したように、第５発明は
第１発明及び第３発明で得られる上記（１１及至０υ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 sheets of FIGS. 7 and 8 showing the embodiments of the fifth invention, the fifth invention is the above (described in In addition to the above effects, the following effects can be obtained.
０乃分級器で分級する前に石炭２０〜６０重量％の低濃
度スラリを希釈して石炭１５〜４０重量％の薄い希釈低
濃度スラリにするので３分級器での分級能率が向上し、
製品高濃度脱灰スラリの大量生産が可能である。Before classification with the 0 classifier, the low concentration slurry of 20 to 60% by weight of coal is diluted to a thin diluted low concentration slurry of 15 to 40% by weight of coal, so the classification efficiency in the 3 classifier is improved.
It is possible to mass produce highly concentrated demineralized slurry.
次に９本発明の第６発明は上記第１発明反型第５発明を
さらに改良したものである。Next, the sixth aspect of the present invention is a further improvement of the fifth aspect of the first invention.
すなわち、第６発明の特徴は第５発明において、脱水機
から得られる粗粒カット脱灰脱水ケーキを混合攪拌機に
導く前に塊砕装置で微小な脱灰脱水ケーキに塊砕するこ
とにある。That is, the feature of the sixth invention is that in the fifth invention, the coarse cut deashed and dehydrated cake obtained from the dehydrator is crushed into fine deashed and dehydrated cakes by the crushing device before being led to the mixing agitator.
以下１本発明の第６発明の好ましい実施例を第９図及び
第１０図に図示する実施例で詳述す−３３＝
る。A preferred embodiment of the sixth aspect of the present invention will be described in detail below with reference to the embodiment illustrated in FIGS. 9 and 10.
第９図及び第１０図に図示する実施例は、第６発明に係
る第１実施例及び第２実施例のフローシイートである。The embodiments illustrated in FIGS. 9 and 10 are flow sheets of the first embodiment and the second embodiment according to the sixth invention.
第９図及び第１０図に図示する実施例において、符号１
及至３４のうち同符号のもの及び符号９ｂ、１２ａ、２
７ａ、２９ｂ、２９ｃ、３０ａは第７図及び第８図に図
示する実施例における符号１及至３４のうち同符号のも
の及び符号９ｂ、１２ａ、２７ａ、２９ｂ、２９ｃ、３
Ｑａと均等物であるので説明を省略する。In the embodiment illustrated in FIGS. 9 and 10, reference numeral 1
to 34, those with the same numerals and 9b, 12a, 2
7a, 29b, 29c, 30a are those with the same numerals 1 to 34 in the embodiment shown in FIGS. 7 and 8, and 9b, 12a, 27a, 29b, 29c, 3
Since it is equivalent to Qa, the explanation will be omitted.
第９図に図示するこのような実施例は、第７図に図示す
る実施例の場合において脱水機ｌＯで得られる粗粒カッ
ト脱灰脱水ケーキをライン１２ａを介して塊砕装置２６
に供給し板状又は塊状の脱灰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ット脱灰脱水ケーキとし
。In the embodiment shown in FIG. 9, the coarse cut demineralized dehydrated cake obtained in the dewatering machine 10 in the case of the embodiment shown in FIG.
The plate-shaped or lump-like demineralized dehydrated cake is crushed into small lumps or fine lumps to produce a small-sized coarse-grain cut demineralized dehydrated cake.
これをライン２７ａを介して混合攪拌機１３に供給する
点に特徴がある。The feature is that this is supplied to the mixer agitator 13 via the line 27a.
＝３４−
以上、第６発明に係る実施例を示す第９図のフローシイ
ートに基づいて詳述したように、第６発明は第１発明反
型第５発明で得られる上記（１）反型０乃に記載の効果
の他に次のような効果が得られる。=34- As described above in detail based on the flow sheet of FIG. 9 showing the embodiment according to the sixth invention, the sixth invention provides the above (1) anti-mold 0 obtained in the first invention anti-mold fifth invention. In addition to the effects described above, the following effects can be obtained.
０１分級する前に分級しやすいように希釈し、また２分
級によって粗粒をカントし、粗粒カット希釈低濃度スラ
リのみを脱灰したのち脱水し、さらに脱水後の板状又は
塊状の粗粒カット脱灰脱水ケーキを塊砕装置で小塊状に
塊砕して混合攪拌機に供給するため、良質の製品高濃度
脱灰スラリを得ることが出来る。01 Dilute to make it easier to classify before classification, and 2) Kant the coarse grains, deash only the coarse grain cut diluted low concentration slurry, dehydrate it, and then remove the plate-like or lump-like coarse grains after dewatering. Since the cut demineralized and dehydrated cake is crushed into small pieces using a crusher and then fed to the mixer, a high-quality demineralized slurry with high concentration can be obtained.
また、第１０図は第６発明の第２実施例であり、第９図
に図示する第６発明の第１実施例に。Further, FIG. 10 shows a second embodiment of the sixth invention, which corresponds to the first embodiment of the sixth invention illustrated in FIG.
上記第５発明の第２実施例を図示する第８図のフローシ
イートで説明した構成１作用を付加して、上記■及至■
に記載した効果の他に次の効果をねらったものである。By adding the configuration 1 action explained in the flow sheet of FIG. 8 illustrating the second embodiment of the fifth invention,
In addition to the effects described in , it aims to achieve the following effects.
■分級する前に分級しやすいように希釈し、また分級に
よって粗粒をカットし粗粒含有希釈低濃度スラリはｌｆ
ｔ粉砕ミル５に返送して再度粉砕し、粗粒がカットされ
た希釈低濃度スラリのみを脱灰したのち脱水し、さらに
脱水後の板状又は塊状の粗粒カット脱灰脱水ケーキを塊
砕装置２６で小塊状に塊砕して混合攪拌機１３に供給す
るため、また、混合攪拌機１３ではこれらの相乗効果に
よって灰分の少ない極めて良質の製品高濃度脱灰スラリ
を得ることが出来る口■Before classification, it is diluted to make it easier to classify, and the coarse grains are cut by classification, and the diluted low concentration slurry containing coarse grains is lf
It is returned to the pulverizing mill 5 and pulverized again, deashing only the diluted low concentration slurry from which coarse particles have been cut, and then dewatering it, and further crushing the plate-shaped or lump-like coarse granule cut demineralized dehydrated cake after dewatering. Because the device 26 crushes it into small pieces and supplies it to the mixer agitator 13, the mixer agitator 13 has a slurry that can obtain highly concentrated demineralized slurry with very high quality product with low ash content due to the synergistic effect of these.
第１図は本発明の第１発明に係る第１実施例のフローシ
イート、第２図は第２発明に係る第１実施例のフローシ
イート、第３図は第３発明に係る第１実施例のフローシ
イート、第４図は第３発明に係る第２実施例のフローシ
イート。
第５図は第４発明に係る第１実施例のフローシイート、
第６図は第４発明に係る第２実施例のフローシイート、
第７図は第５発明に係る第１実施例のフローシイート、
第８図は第５発明に係る第２実施例のフローシイート、
第９図は第６発明に係る第１実施例のフローシイート、
第１者図は第６発明に係る第２実施例のフローシイート
、第１１図は従来の低濃度湿式高濃度スラリの製造方法
に関するフローシイートである。
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・・・
脱灰装置、８・・・灰分の排出ライン、９・・・低濃度
脱灰スラリの輸送ライン、９ａ・・・粗粒カット低濃度
脱灰スラリの輸送ライン、９ｂ・・・粗粒カット希釈低
濃度脱灰スラリの輸送ライン、１０・・・脱水機。
１１・・・脱水水の排出ライン、１２・・・脱灰脱水ケ
ーキの輸送ライン、１２ａ・・・粗粒カット脱灰脱水ケ
ーキの輸送ライン、１３・・・混合攪拌機、１４・・・
調整水用タンク、１＝３７−
５・・・調整水の供給ライン、１６・・・添加剤用タン
ク、１７・・・添加剤の供給ライン。
１８・・・混練高濃度脱灰スラリの輸送ライン。
１９・・・分散機、２０・・・分散高濃度脱灰スラリの
輸送ライン、２１・・・スラリ調整槽。
２２・・・製品高濃度脱灰スラリの輸送ライン。
２３・・・製品高濃度脱灰スラリ用タンク、２４・・・
脱氷水の返送循環ライン、２５・・・脱氷水の供給ライ
ン、２６・・・塊砕装置、２７・・・小塊状脱灰脱水ケ
ーキの輸送ライン。
２７ａ・・・小塊状粗粒カット脱灰脱水ケーキの輸送ラ
イン、２８・・・分級器、２９・・・粗粒含有低濃度ス
ラリの排出ライン、２９ａ・・・粗粒含有低濃度スラリ
の返送循環ライン。
２９ｂ・・・粗粒含有希釈低濃度スラリの排出ライン、
２９Ｃ・・・粗粒含有希釈低 濃度スラリの返送循環ラ
イン、３０・・・粗粒カット低濃度スラリの輸送ライン
、３１）ａ・・・粗粒釈低濃度スラリの輸送ライン。
！ ｌ 図
第 ２ 図
第３図
第４ 図
第５図
第６図
第７図
第ｇ図
第９図
第１０図
第１１図FIG. 1 is a flow sheet of the first embodiment according to the first invention of the present invention, FIG. 2 is a flow sheet of the first embodiment according to the second invention, and FIG. 3 is a flow sheet of the first embodiment according to the third invention. , FIG. 4 is a flow sheet of the second embodiment according to the third invention. FIG. 5 is a flow sheet of the first embodiment according to the fourth invention;
FIG. 6 is a flow sheet of the second embodiment according to the fourth invention,
FIG. 7 is a flow sheet of the first embodiment according to the fifth invention;
FIG. 8 is a flow sheet of the second embodiment according to the fifth invention,
FIG. 9 is a flow sheet of the first embodiment according to the sixth invention,
The first person's drawing is a flow sheet of the second embodiment according to the sixth invention, and FIG. 11 is a flow sheet of a conventional method for manufacturing a low concentration wet high concentration slurry. 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 transport line, 7...
Deashing device, 8... Ash discharge line, 9... Transport line for low concentration deashed slurry, 9a... Transport line for coarse cut low concentration deashed slurry, 9b... Coarse cut dilution Transport line for low concentration demineralized slurry, 10... dehydrator. DESCRIPTION OF SYMBOLS 11... Discharge line for dehydrated water, 12... Transport line for demineralized and dehydrated cake, 12a... Transport line for coarse cut demineralized and dehydrated cake, 13... Mixing agitator, 14...
Adjusted water tank, 1=37- 5... Adjusted water supply line, 16... Additive tank, 17... Additive supply line. 18... Transport line for kneading high concentration demineralized slurry. 19...Dispersion machine, 20...Transportation line for dispersed high concentration demineralized slurry, 21...Slurry adjustment tank. 22...Transportation line for product high concentration demineralized slurry. 23...Tank for product high concentration deashing slurry, 24...
Deicing water return circulation line, 25...Deicing water supply line, 26...Clumping device, 27...Transportation line for small lump-like deashing and dewatering cake. 27a... Transportation line for small-sized coarse grain cut demineralized dehydrated cake, 28... Classifier, 29... Discharge line for low concentration slurry containing coarse particles, 29a... Returning low concentration slurry containing coarse particles circulation line. 29b...Discharge line for diluted low concentration slurry containing coarse particles,
29C...Return circulation line for coarse grain-containing diluted low concentration slurry, 30...Transportation line for coarse grain cut low concentration slurry, 31)a...Transportation line for coarse grain cut low concentration slurry. ! l Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure g Figure 9 Figure 10 Figure 11
Claims (1)
り、ついで上記低濃度石炭水スラリを脱灰したのち脱水
し、得られる脱灰脱水ケーキを混合攪拌機に導き、同混
合攪拌機で供給される調整水、添加剤とともに混合・攪
拌 して混練高濃度脱灰石炭水スラリを作り、さらに上記混
練高濃度脱灰石炭水スラリを分散機に導き、同分散機で
上記添加剤を上記混練高濃度脱灰石炭水スラリ中に均一
に分散させ、得られる分散高濃度脱灰石炭水スラリをさ
らにスラリ調整槽にて調整することを特徴とする高濃度
石炭水スラリの製造方法。 ２）石炭を水中で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灰したのち脱水し
、得られる脱灰脱水ケーキを塊砕装置で塊砕し小塊状脱
灰脱水ケーキとして混合攪拌機に導き、同混合攪拌機で
供給される調整水、添加剤とともに混合・攪拌して混練
高濃度脱灰石炭水スラリを作り、さらに上記混練高濃度
脱灰石炭水スラリを分散機に導き、同分散機で上記添加
剤を上記混練高濃度脱灰石炭水スラリ中に均一に分散さ
せ、得られる分散高濃度脱灰石炭水スラリをさらにスラ
リ調整槽にて調整することを特徴とする高濃度石炭水ス
ラリの製造方法。 ３）石炭を水中で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分級器にて粗粒を含
む低濃度石炭水スラリと粗粒が除去された低濃度石炭水
スラリとに分級し、上記粗粒が除去された低濃度石炭水
スラリは脱灰したのち脱水し、得られる粗粒カット脱灰
脱水ケーキを混合攪拌機に導き、同混合攪拌機で供給さ
れる調整水、添加剤とともに混合・攪拌して混練高濃度
脱灰石炭水スラリを作り、さらに上記混練高濃度脱灰石
炭水スラリを分散機に導き、同分散機で上記添加剤を上
記混練高濃度脱灰石炭水スラリ中に均一に分散させ、得
られる分散高濃度脱灰石炭水スラリをさらにスラリ調整
槽にて調整することを特徴とする高濃度石炭水スラリの
製造方法。 ４）石炭を水中で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分級器にて粗粒を含
む低濃度石炭水スラリと粗粒が除去された低濃度石炭水
スラリとに分級し、上記粗粒が除去された低濃度石炭水
スラリは脱灰したのち脱水し、得られる粗粒カット脱灰
脱水ケーキを塊砕装置で塊砕し小塊状脱灰脱水ケーキと
して混合攪拌機に導き、同混合攪拌機で供給される調整
水、添加剤とともに混合攪拌して混練高濃度脱灰石炭水
スラリを作り、さらに上記混練高濃度脱灰石炭水スラリ
を分散機に導き、同分散機で上記添加剤を上記混練高濃
度脱灰石炭水スラリ中に均一に分散させ、得られる分散
高濃度脱灰石炭スラリをさらにスラリ調整槽にて調整す
ることを特徴とする高濃度石炭水スラリの製造方法。 ５）石炭を水中で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希釈水にて希釈した
のち分級器にて粗粒を含む希釈低濃度石炭水スラリと粗
粒が除去された希釈低濃度石炭水スラリとに分級し、上
記粗粒が除去された希釈低濃度石炭水スラリは脱灰した
のち脱水し、得られる粗粒カット脱灰脱水ケーキを混合
攪拌機に導き、同混合攪拌機で供給される調整水、添加
剤とともに混合・攪拌して混練高濃度脱灰石炭水スラリ
を作り、さらに上記混練高濃度脱灰石炭水スラリを分散
機に導き、同分散機で上記添加剤を上記混練高濃度脱灰
石炭水スラリ中に均一に分散させ、得られる分散高濃度
脱灰石炭水スラリをさらにスラリ調整槽にて調整するこ
とを特徴とする高濃度石炭水スラリの製造方法。 ６）石炭を水中で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希釈水にて希釈した
のち分級器にて粗粒を含む希釈低濃度石炭水スラリと粗
粒が除去された希釈低濃度石炭水スラリとに分級し、上
記粗粒が除去された希釈低濃度石炭水スラリは脱灰した
のち脱水し、得られる粗粒カット脱灰脱水ケーキを塊砕
装置で塊砕し小塊状粗粒カット脱灰脱水ケーキとして混
合攪拌機に導き、同混合攪拌機で供給される調整水、添
加剤とともに混合・攪拌して混練高濃度脱灰石炭水スラ
リを作り、さらに上記混練高濃度脱灰石炭水スラリを分
散機に導き、同分散機で上記添加剤を上記混練高濃度脱
灰石炭水スラリ中に均一に分散させ、得られる分散高濃
度脱灰石炭水スラリをさらにスラリ調整槽にて調整する
ことを特徴とする高濃度石炭水スラリの製造方法。[Claims] 1) Coarsely pulverize coal in water to create a low-concentration coal-water slurry, then deash the low-concentration coal-water slurry, dehydrate it, and send the resulting deashed and dehydrated cake to a mixer. The above-mentioned kneaded high-concentration deashed coal-water slurry is prepared by mixing and stirring with the adjusted water and additives supplied by the mixing agitator, and the above-mentioned kneading high-concentration deashed coal-water slurry is then introduced into the dispersing machine. A highly concentrated coal water slurry characterized in that the above additive is uniformly dispersed in the kneaded high concentration deashed coal water slurry, and the obtained dispersed highly concentrated deashed coal water slurry is further adjusted in a slurry adjustment tank. manufacturing method. 2) Coarsely pulverize coal in water to create a low-concentration coal-water slurry, then demineralize and dehydrate the low-concentration coal-water slurry, and crush the resulting deashed and dehydrated cake with a crusher to form small lumps. The ash is introduced as a dehydrated cake into a mixing agitator, mixed and stirred with adjusted water and additives supplied by the same mixing agitator to create a kneaded high concentration deashed coal water slurry, and further disperses the above kneaded high concentration deashed coal water slurry. The additive is uniformly dispersed in the kneaded high concentration deashed coal water slurry using the same dispersing machine, and the resulting dispersed high concentration deashed coal water slurry is further adjusted in a slurry adjustment tank. A method for producing a highly concentrated coal-water slurry. 3) Coarsely pulverize coal in water to create a low-concentration coal-water slurry, and then pass the low-concentration coal-water slurry into a classifier to produce a low-concentration coal-water slurry containing coarse particles and a low-concentration coal-water slurry from which the coarse particles have been removed. The low-concentration coal-water slurry from which the coarse particles have been removed is deashed and then dehydrated, and the resulting coarse-grain cut, deashed and dehydrated cake is led to a mixer and agitator, and adjusted water is supplied by the mixer and agitator. , mix and stir with additives to make a kneaded high-concentration deashed coal water slurry, and then introduce the kneaded high-concentration deashed coal-water slurry to a dispersion machine, where the additives are mixed with the above-mentioned kneaded high-concentration deashed coal water slurry. A method for producing a highly concentrated coal water slurry, which comprises uniformly dispersing the slurry in a coal water slurry, and further adjusting the resulting dispersed highly concentrated demineralized coal water slurry in a slurry adjustment tank. 4) Coarsely pulverize coal in water to create a low-concentration coal-water slurry, and then pass the low-concentration coal-water slurry into a classifier to produce a low-concentration coal-water slurry containing coarse particles and a low-concentration coal-water slurry from which the coarse particles have been removed. The low-concentration coal-water slurry from which the coarse particles have been removed is deashed and then dehydrated, and the resulting coarse-grain cut deashed and dehydrated cake is crushed using a crusher to form small lumps of deashed and dehydrated cake. The mixture is introduced into a mixing agitator, mixed and stirred with adjusted water and additives supplied by the same mixing agitator to create a kneaded high concentration deashed coal water slurry, and then the above kneaded high concentration deashed coal water slurry is introduced into a dispersion machine and mixed with additives. A highly concentrated coal water characterized by uniformly dispersing the additive into the kneaded highly concentrated deashed coal water slurry using a dispersing machine, and further adjusting the resulting dispersed highly concentrated deashed coal slurry in a slurry adjustment tank. Slurry manufacturing method. 5) Coarsely pulverize coal in water to create a low concentration coal water slurry, then dilute the above low concentration coal water slurry with dilution water, and use a classifier to separate the diluted low concentration coal water slurry containing coarse particles and coarse particles. The diluted low-concentration coal-water slurry from which the coarse particles have been removed is separated into a diluted low-concentration coal-water slurry from which the coarse particles have been removed, and the diluted low-concentration coal-water slurry from which the coarse particles have been removed is deashed and then dehydrated. , mixed and stirred with adjusted water and additives supplied by the mixing agitator to create a kneaded high concentration deashed coal water slurry, and further led the kneaded high concentration deashed coal water slurry to a dispersion machine. The above-mentioned additive is uniformly dispersed in the kneaded high-concentration deashed coal-water slurry, and the obtained dispersed high-concentration deashed coal-water slurry is further adjusted in a slurry adjustment tank. Production method. 6) Coarsely pulverize coal in water to create a low concentration coal water slurry, then dilute the above low concentration coal water slurry with dilution water, and use a classifier to separate the diluted low concentration coal water slurry containing coarse particles and coarse particles. The diluted low-concentration coal-water slurry from which the coarse particles have been removed is deashed and then dehydrated, and the resulting coarse-grained, deashed and dehydrated cake is crushed using a crusher. It is crushed and introduced into a mixer as a demineralized dehydrated cake cut into small lumps, and then mixed and stirred with adjusted water and additives supplied by the same mixer and stirrer to create a kneaded high-concentration deashed coal water slurry, and further kneaded as described above. The high concentration deashed coal water slurry is introduced into a dispersion machine, and the above additives are uniformly dispersed in the kneaded high concentration deashed coal water slurry by the same dispersion machine, and the resulting dispersed high concentration deashed coal water slurry is further slurried. A method for producing a highly concentrated coal-water slurry, which comprises adjusting the slurry in a adjusting tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17491385A JPS6234993A (en) | 1985-08-08 | 1985-08-08 | Production of coal water slurry in high concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17491385A JPS6234993A (en) | 1985-08-08 | 1985-08-08 | Production of coal water slurry in high concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6234993A true JPS6234993A (en) | 1987-02-14 |
| JPH0576990B2 JPH0576990B2 (en) | 1993-10-25 |
Family
ID=15986889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17491385A Granted JPS6234993A (en) | 1985-08-08 | 1985-08-08 | Production of coal water slurry in high concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6234993A (en) |
-
1985
- 1985-08-08 JP JP17491385A patent/JPS6234993A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0576990B2 (en) | 1993-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |