Ϊ362967 九、發明說明： 【發明所屬之技術領域】 本發明係關於飛灰中之未燃燒碳除去裝置，更詳細為關 於可有效率地自燃煤火力發電廠或流體化床燃燒爐等所 發生的飛灰將未燃燒碳除去之飛灰中之未燃燒碳除去裝 置。 【先前技術】 燃煤火力發電廠或流體化床燃燒爐等所發生之飛灰 (FA)可被利用於水泥或人工輕質骨材之原料，或混凝土 用混合材料等。 但是，以飛灰當做混凝土混合材料使用時，由於含在飛 灰中之未燃燒碳會吸收AE劑、減水劑等，因此，必須事 先預估吸收份而供應過量的AE劑、減水劑而變成不經 濟。又，由於未燃燒碳具有撥水性，因此，在打成混凝土 時其會從混凝土分離而浮上來，而在混凝土之接合部會發 ，生未燃燒碳所成的黑色部，而有此一不良之效應。又，: 飛灰中之未燃燒碳的含有量過多時，飛灰彼此間之結^ 不足而有會減低人工輕質骨材的品質之問題。 因此，有被提案-種在飛灰中添加水使其漿體㈣ 在漿體化的飛灰中添加煤油等之捕集劑 =eCTi，再藉高速剪切授拌機實施未燃燒破之表面 、質而在未燃燒奴的表面上附著捕集劑，缺後再添加 泡劑並利用浮選法使未燃燒碳分離之方二 ^ x 本專利第3613347號說明書β )β 列口 ’ >几、日 312ΧΡ/發明說明書(補件)/96·〇4/961 〇〇754 5 1362967 如圖7所示’高速剪切攪拌機1，雖然係藉由：橫向型 之攪拌機本體2 ;及，將攪拌機本體2内分割成複數個室 3之圓環狀的複數個間隔壁4;及，貫通攪拌機本體2之 轴線方向的迴轉軸5;及，被固定在迴轉轴5，且在各室 3内迴轉之複數個攪拌葉片6;如此所構成，但由於利用 授摔葉片6賦予剪切力至添加捕集劑後的聚體中，因此， 必須同精確度地保持間隔壁4和攪拌葉片6之間或攪拌機 本體2和攪拌葉片6之間的間隙（Clearance)。又，由於 轴的長度較長，因此，要製造或保養高速煎切授摔機時， 則必須高度的技術。圖中，符號7係馬達，8係減速機。 ，:以往的高速剪切攪拌機因為攪拌機本體2和迴轉軸 5、疋秩向型，因此，必須使攪拌機本體2與迴轉軸5之間 隙予以軸封。X ’以往的高速剪切擾拌機，由於㈣機本 f 2係知、向型’如果要放大（seale-up)時’則漿體入口與 水體出口之間之距離會增長，而飛灰的生成條件’例如二 » 燃燒溫度或燃燒方法，或因應於煤碳的種類或組成等之表 面改質的處理時間或處理條件等_以自由地變更。 【發明内容】 種Π::為了解決上述問題而所完成，其目的為提供-m 改質之浮選法而除去飛灰中的未燃燒 配人飞七在的南速剪切_機除了構造簡單外，並可 有效率地分離未燃燒碳的飛灰中之未 為了解決上述問題，本發明係由如下所構成。 312XP·月說明書(補件)/96姻⑽奶4 Π uozyo/ 發泡劑’ a’係灰分。 =圖2料1體調製槽1Q係為了在飛灰a中使水c 成漿體d而所設置者，其具有可攪拌漿體d之攪拌 案卜漿體d被調製成飛灰濃度⑽㈣或10〜25 ^ %之範圍。 办π漿體調氣槽在其前段設有未圖示之飛灰槽與水供 °備而在其後段則具有可將漿體d供給至表面改質裝 置之泵12。在泵1 2的後段具有：可收容煤油、輕油、 重油等的捕集劑e之捕集劑槽2()，·及，將捕集劑槽2〇内 的捕集劑e添加至漿體d之泵21;及，捕集劑注入管以。 此捕集劑注入管22連接至連結漿體調製槽10和表面改質 裝，30之漿體供給管13，其可將捕集劑e添加至漿體供 :f 13内之漿體d中。捕集劑之添加量在(對 也灰），或0. 05〜1 · 〇wt%(對飛灰），之範圍為佳。 表面改貝裝置3 0係為對捕集劑添加後之漿體賦予剪切 g而對未燃燒碳的表面改質所設者，其被構成為利用連接 官32而將複數個表面改質機31串聯連接。表面改質機 31各別為由：垂直型攪拌槽33;及，設在此攪拌槽犯内 之垂直型攪拌機34 ;所構成。攪拌機34係藉由：迴轉軸 35;及’設在其先端之攪拌葉片％;及，可使攪拌葉片 36高速迴轉之馬達3?;所構成。 攪拌葉片的形狀，以侧面視以長條（strip_like)形為 佳。又，如圖3所示，也可在攪拌葉片36的先端設置摩 耗體（abrasion body )45在摩耗體45與攪拌槽33的内壁 312XP/胃明說明書(補件)/96-04/96100754 10 丄/ 的表 =質機31所構成，各表面改質機31係藉由 二尸32而被串聯連接。又，此-表面改質裝置;0 -有在尾端（第3)的表面改質機31适迴之 ^ 30 將亦即，藉由第^ 2表面改質機Μ 所 =的：體則可在第3表面改質機… 二入?"皮連接至第2連接管32,而旁通 9 41被連接至第3連接管32。旁通路39具有間42，出第2 ,4連3接^ 32則在比旁通路39的連接點之更後流側具有閥 人調整槽60係自表面改質裝置3〇所供給的裝體以低速混 a添加自發泡㈣50巾利用i 51所供給的發泡劑士者， 而在其内部具有攪拌葉片61。 發泡劑以使用眺（4一甲基I戊醇，methylisobutylΪ 362967 IX. Description of the Invention: [Technical Field] The present invention relates to an unburned carbon removal device in fly ash, and more specifically relates to an efficient self-igniting coal thermal power plant or a fluidized bed combustion furnace The fly ash removes the unburned carbon removal unit from the fly ash from the unburned carbon. [Prior Art] Fly ash (FA) occurring in a coal-fired thermal power plant or a fluidized bed combustion furnace can be utilized as a raw material for cement or artificial lightweight aggregates, or as a mixed material for concrete. However, when fly ash is used as a concrete mixed material, since the unburned carbon contained in the fly ash absorbs the AE agent, the water reducing agent, and the like, it is necessary to estimate the absorption portion in advance and supply an excessive amount of the AE agent and the water reducing agent to become uneconomic. Further, since the unburned carbon has water repellency, it is separated from the concrete and floated when the concrete is formed, and is generated at the joint portion of the concrete, and the black portion formed by the unburned carbon is generated. The effect. Further, when the content of unburned carbon in the fly ash is too large, the fly ash is insufficiently combined to reduce the quality of the artificial lightweight aggregate. Therefore, it is proposed to add water to the fly ash to make the slurry (4) add kerosene and other collectors to the slurry fly ash = eCTi, and then use a high-speed shear mixer to carry out the unburned surface. , the substance is attached to the surface of the unburned slave, the foam is added, and the foam is added, and the unburned carbon is separated by the flotation method. The patent β3613347 specification β)β column mouth > 312 ΧΡ / invention manual (supplement) / 96 · 〇 4 / 961 〇〇 754 5 1362967 as shown in Figure 7 'high-speed shear mixer 1, although by: horizontal type mixer body 2; and, will a plurality of annular partition walls 4 divided into a plurality of annular chambers 3 in the mixer body 2; and a rotary shaft 5 penetrating the axial direction of the mixer body 2; and fixed to the rotary shaft 5 and in each of the chambers 3 a plurality of agitating blades 6 that are rotated; configured as such, but since the shearing force is applied to the polymer after the addition of the collector by the falling blade 6, the partition wall 4 and the agitating blade 6 must be accurately maintained. A gap between the mixer body 2 and the agitating blades 6 (Clearance). Moreover, since the length of the shaft is long, it is necessary to have a high degree of skill in manufacturing or maintaining a high-speed frying and weighing machine. In the figure, the symbol 7 is a motor and the 8 series is used. : The conventional high-speed shear mixer is required to axially seal the gap between the mixer body 2 and the rotary shaft 5 because the mixer body 2 and the rotary shaft 5 and the crucible are oriented. X 'conventional high-speed shear scrambler, because (4) machine f 2 is known, the type 'if you want to enlarge (seale-up)' then the distance between the slurry inlet and the water outlet will increase, and fly ash The production condition 'for example, 'the combustion temperature or the combustion method, or the treatment time or the treatment condition for the surface modification such as the type or composition of the coal, is freely changed. SUMMARY OF THE INVENTION: In order to solve the above problems, the purpose is to provide a -m modified flotation method to remove the unburned manned fly in the fly ash. In addition to being simple and capable of efficiently separating fly ash from unburned carbon, the present invention is not constituted in order to solve the above problems. 312XP·monthly manual (supplement)/96 marriage (10) milk 4 Π uozyo/ foaming agent ' a' is ash. = Figure 2 material 1 body modulation tank 1Q is set in order to make water c into slurry d in fly ash a, the stirring slurry d which can be stirred slurry d is modulated into fly ash concentration (10) (four) or 10~25^% of the range. The π slurry air conditioning tank is provided with a fly ash tank (not shown) and water supply in the front stage, and a pump 12 for supplying the slurry d to the surface modification apparatus in the latter stage. In the latter stage of the pump 12, there is a collector tank 2 () capable of containing a collector e such as kerosene, light oil, or heavy oil, and a collector e in the collector tank 2 is added to the slurry. The pump 21 of the body d; and the collector is injected into the tube. The collector injection pipe 22 is connected to the slurry supply tank 10 and the slurry supply pipe 13 of the surface modification package 30, which can add the trapping agent e to the slurry for the slurry d in the f 13 . The amount of the collector added is (yes also ash), or 0. 05~1 · 〇wt% (for fly ash), the range is better. The surface squeezing device 30 is a surface modification of the unburned carbon by imparting shear g to the slurry after the addition of the collector, and is configured to use a plurality of surface modifiers by the joint officer 32. 31 connected in series. The surface reformer 31 is composed of: a vertical agitation tank 33; and a vertical mixer 34 provided in the agitation tank; The agitator 34 is constituted by a rotary shaft 35; and a stirring blade % provided at the tip end thereof; and a motor 3 which can rotate the stirring blade 36 at a high speed. The shape of the agitating blade is preferably a strip-like shape from the side. Further, as shown in Fig. 3, an abrasion body 45 may be provided at the tip end of the agitating blade 36 on the inner wall 312XP of the ablation body 45 and the agitation tank 33/stomach specification (supplement)/96-04/96100754 10 The table of 丄/ is composed of the mass machine 31, and each surface modifier 31 is connected in series by two bodies 32. Moreover, the surface modifying device; 0 - having the surface modifying machine 31 at the trailing end (3rd) is adapted to be 30, that is, by the second surface modifying machine The third surface changer 32 can be connected to the second connecting pipe 32, and the bypass 941 can be connected to the third connecting pipe 32. The bypass passage 39 has a space 42, and the second, fourth, and third connections 32 have a valve body adjustment groove 60 which is supplied from the surface modification device 3〇 on the flow side of the connection point of the bypass passage 39. The self-foaming (four) 50 towel is added at a low speed, and the foaming agent supplied by the i 51 is used, and the stirring blade 61 is provided inside. Blowing agent to use 眺 (4-methyl I pentanol, methylisobutyl
CarMn〇"等較佳。發泡量之添加量以20〜5_卿或 1 〇(M 000卿為佳。發泡劑之添加量未滿2〇卿時則會 k使氣泡之發生不足。另__ 士二 ^ ί 另 方面’發泡量的添加量超過 5〇〇〇Ppm時，則會使發泡劑成本增加。又，其會使飛灰之 回收率減Έ又’過剩的氣泡貝,】會污染周圍環境。 在此-調整槽60的後段，配置有使發泡劑添加後的漿 體d供,Ό至淨選機70用之泵62 〇浮選機7〇可使改質後 的未燃燒碳附著在上浮，錢未職碳（泡沫， froth)及被除去未燃燒碳之飛灰（尾料，taiUng)分離， 而其可使用以往眾所周知之浮選機。 如圖6所示，上述之表面改質裝置3〇可適用於垂直型 312XP/發明說明書(補件)/96-04/96100754 1362967 多段式授拌槽101。此一垂直型多段式擾拌槽101係由： 垂直型擾拌槽102 ;及，多段設在擾拌槽1〇2的内面之環 狀的間隔壁104;及，設在摱拌槽1〇2之轴思部的迴轉轴 log，及，和前述間隔壁1〇4交替設在該迴轉軸105的攪 拌葉片106 ;如此所構成。又，圖中，符號1〇9係漿體導 入口，11〇係漿體排出口。又，攪拌槽1〇2與攪拌葉片 之間的間隙、攪拌葉片106之攪拌力（攪拌動力）、漿體 之停滯時間等被設定為和前例中相同。 鲁其次說明上述未燃燒碳除去裝置之作用。 本發明係利用飛灰之性質而預先決定表面改質機的使 用台數。例如，比較容易表面改質之飛灰（例如，瀝青煤 之飛灰），則表面改質機之使用台數較少，（圖中係2段）， 而比較難表面改質的飛灰（例如，一般炭之飛灰），則表 面改質機之使用台數較多（圖中係3段）。又，為了說明 方便起見，以2段之表面改質機使用台數之情況來說明。 籲在此情況下，使旁通路39的閥42設定為「開」，而使第 2連接管32之閥43設定為「閉」。 在圖2中’飛灰a係被供給至漿體調製槽1〇而和水c 混合變成漿體d。此時，漿體之飛灰的濃度，例如被調製 為5〜40wt%。此漿體d，雖然藉泵12而被供給至第！表 面改質機31a’但在其途中，由捕集劑槽20添加既定量（例 如’ 0. 0卜3. Owt% (對飛石））的捕集劑e。 被供給至第1表面改質機31 a之漿體d及捕集劑e係藉 高速迴轉（例如，200〜lOOOOrpm)之攪拌葉片36而賦予煎 MZXP/發明說明書(補件)/96.〇4/961〇〇754 13 1362967 切力。在第1表面改質機31a而被賦予剪切力之聚體4及 捕集劑6係被供給至第2表面改質機31b，而再賦予剪切 力。如此’對漿體及捕集劑賦予剪切力，雖然是為了改質 未燃燒碳的表面而提高浮選之浮游性，但關於此點，一面 參照圖5(a)至圖5(c)而一面說明。 如圖5(a)所示，如在漿體狀的飛灰僅混合捕集劑時， 在水c中僅成為混合飛灰a、未燃燒碳b及捕集劑e之狀 態。在此狀態即使將漿體供給至浮選機，其和捕集劑一起 附著在氣泡的未燃燒碳量非常少，因此，利用浮選並不能 有效地除去飛灰中之未燃燒碳。 但是，如賦予剪切力至圖5(&)之漿體及捕集劑而實施 表面改質時，在漿體中之未燃燒碳b、飛灰a、捕集劑e 之各分散粒子則會發生過渡性的活性能量，而表面會變成 更親油化（oleophilic)。又，當使被親油化之未燃燒碳b 和捕集劑e之各粒子表面密著而降低互相的表面能量，其 籲結果，則如圖5(b)所示，在未燃燒碳b可附著捕集劑e。 因此’使用浮選機浮選時，如圖5(c)所示，因捕集劑e 所附著之未燃燒碳b附著在氣泡〇而上浮，因此，其可提 高未燃燒碳b之浮選的浮游性。 自第2表面改質機31b所排出之改質漿體d，係通過旁 通路39而被供給至調整槽6〇。在此調整槽，其僅被添 加既定量（例如，20〜5000ppm)的MIBC(4-曱基-2-戊醇）等 之發泡劑f。添加發泡劑f後的漿體d”則被供給至浮選 機7 0而被浮選。 312XP/發明說明書(補件)/96-04/96100754 14 1362967 含有未燃燒碳之泡沫（未燃燒碳）i係藉未圖示之壓濾機 (f i 1 ter press)而被固液分離以回收未燃燒碳c。而以壓 濾機脫水的水分其藉泵（未圖示）被供給至調製槽1〇，並 再被添加至新的飛灰。另一方面，自浮選機7〇之尾料（飛 灰）j則係以未圖示之固液分離器（離心脫水機）而作固液 为離，並使灰分當作製品而被利用於水泥混合材料等。 (產業上之可利用性） I本發明適用於對自燃煤火力發電廠或流化床燃燒爐等 所發生的飛灰可有效率地除去未燃燒碳。 【圖式簡單說明】 圖1係本發明之飛灰中未燃燒碳之除去纟置的方塊圖。 圖2係本發明之飛灰中未燃燒碳之除去裝置的概略構 圖3係表面改質機之主要部份擴大頂視圖。 圖4係表面改質機之主要部份擴大側視圖。 •圖5(a)係捕集劑添加時之狀態圖，（b)係表面改質時之 狀悲圖，（c)係浮選機時之狀態圖。 圖6係包含本發明之垂 面之側視圖。 直型多段式攪拌槽的一部份剖 圖 圖。 【主 10 11 7係以往的高速剪切攪拌機包含-部份剖面的側視 要元件符號說明】 漿體調製槽 攪拌葉片 312XP/發明說明書(捕件)/96._〇〇754 1362967 12 、 21 、 38 、 51 、 62 泵 13 20 22 30 31 31a 31b -•31c .32 33 漿體供給管 捕集劑槽 捕集劑注入管 表面改質裝置 表面改質機 第1表面改質機 第2表面改質機 第3表面改質機 連接管 攪拌槽 34 攪拌機 35 ' 105 迴轉轴 37 •39 40 41 36 ' 61 ' 106 攪拌葉片 馬達 旁通路 旁通路入口 旁通路出口 42、43 45 50 60 70 101 閥 摩耗體 發泡劑槽 調整槽 浮選機 垂直型多段式攪拌槽 312XP/發明說明書(補件)/96-04/96100754 16 1362967 102 垂直型攪拌槽 104 間隔壁 109 漿體導入口 110 漿體排出口 a 飛灰 a， 灰分 b 未燃燒碳 •d 水（未燃燒碳） 漿體 d， 改質漿體 d” 發泡劑添加後之漿體 e 捕集劑 f 發泡劑 i 泡沐（未燃燒碳） j 尾料（飛灰） •L 間隔（間隙） n 氣泡 312XP/發明說明書(補件)/96-04/96100754 17CarMn〇" is preferred. The amount of foaming is 20~5_qing or 1 〇 (M 000 qing is preferred. When the amount of foaming agent is less than 2 〇 则会, k will cause insufficient bubble generation. __士二^ ί On the other hand, when the amount of foaming exceeds 5 〇〇〇Ppm, the cost of the foaming agent will increase. In addition, it will reduce the recovery rate of fly ash and reduce the excess bubble, which will pollute the surrounding environment. In the rear stage of the adjustment tank 60, the slurry d after the addition of the foaming agent is disposed, and the pump 62 is used for the cleaning machine 70. The flotation machine 7 is used to make the modified unburned carbon adhere. In the floating, the carbon (frozen) and the fly ash (tailing, taiUng) are removed, and the previously known flotation machine can be used. As shown in Fig. 6, the above surface modification The mass device 3〇 can be applied to the vertical type 312XP/invention specification (supplement)/96-04/96100754 1362967 multi-stage mixing tank 101. This vertical type multi-stage stirring tank 101 is composed of: vertical type disturbing tank 102 And a plurality of annular partition walls 104 disposed on the inner surface of the disturbing tank 1〇2; and a rotary axis log provided in the axial portion of the mixing tank 1〇2, and The partition wall 1〇4 is alternately provided on the agitating blade 106 of the rotary shaft 105; and is constituted as follows. In the figure, the symbol 1〇9 is a slurry introduction port, and 11 is a slurry discharge port. Further, the agitation tank 1〇 2 The gap between the stirring blade, the stirring force of the stirring blade 106 (stirring power), the stagnation time of the slurry, and the like are set to be the same as in the previous example. The second embodiment explains the action of the unburned carbon removing device. The number of used surface modifiers is determined in advance by the nature of the fly ash. For example, if the surface ash is relatively easy to be modified (for example, fly ash from bituminous coal), the number of surface modifiers is small. In the middle section 2), and the fly ash which is difficult to surface-modify (for example, the general fly ash), the number of surface modifiers is more (3 in the figure). See the case where the number of surface modifiers used in the two stages is used. In this case, the valve 42 of the bypass passage 39 is set to "ON", and the valve 43 of the second connection pipe 32 is set to " Closed. In Figure 2, 'flying ash a is supplied to the slurry brewing tank 1 and c is mixed into the slurry d. At this time, the concentration of the fly ash of the slurry is, for example, adjusted to 5 to 40% by weight. This slurry d, although supplied by the pump 12, is supplied to the surface modification machine 31a' but On the way, the collector agent e is added from the collector tank 20 (for example, '0. 0 Bu 3. Owt% (for flying stones)). The slurry d supplied to the first surface modifier 31 a and The trapping agent e is subjected to high-speed rotation (for example, 200 to 1000 rpm) of the stirring blade 36 to impart a cutting force to the fried MZXP/invention specification (supplement)/96.〇4/961〇〇754 13 1362967. The polymer 4 and the collector 6 to which the shearing force is applied to the first surface modifier 31a are supplied to the second surface modifier 31b to impart shearing force. Thus, the shearing force is applied to the slurry and the collecting agent, and the floating property of the flotation is improved in order to reform the surface of the unburned carbon. However, referring to FIG. 5(a) to FIG. 5(c), And one side explains. As shown in Fig. 5 (a), when only the collector is mixed in the slurry-like fly ash, only the mixed fly ash a, the unburned carbon b, and the collector e are mixed in the water c. In this state, even if the slurry is supplied to the flotation machine, the amount of unburned carbon adhering to the bubble together with the collector is extremely small, and therefore, the unburned carbon in the fly ash cannot be effectively removed by flotation. However, if the surface is modified by applying a shear force to the slurry and the collector of FIG. 5, the dispersed particles of unburned carbon b, fly ash a, and collector e in the slurry are used. Transitional active energy occurs and the surface becomes oleophilic. Further, when the surface of each of the oleophilic unburned carbon b and the trapping agent e is adhered to reduce the mutual surface energy, the result is as shown in Fig. 5(b), in the unburned carbon b. The collector e can be attached. Therefore, when the flotation machine is used for flotation, as shown in Fig. 5(c), the unburned carbon b attached to the collector e adheres to the bubble enthalpy and floats, so that it can improve the flotation of the unburned carbon b. The planktonity. The modified slurry d discharged from the second surface reformer 31b is supplied to the adjustment tank 6 through the bypass passage 39. Here, the tank is adjusted to be added with only a predetermined amount (e.g., 20 to 5000 ppm) of a foaming agent f such as MIBC (4-mercapto-2-pentanol). The slurry d" after the addition of the blowing agent f is supplied to the flotation machine 70 and is floated. 312XP/Invention Manual (Supplement)/96-04/96100754 14 1362967 Foam containing unburned carbon (unburned) The carbon) is solid-liquid separated by a filter press (not shown) to recover unburned carbon c. The water dehydrated by the filter press is supplied to the modulation by a pump (not shown). The tank is 1 〇 and is added to the new fly ash. On the other hand, the tailings (fly ash) j from the flotation machine 7 is made up of a solid-liquid separator (centrifugal dewatering machine) not shown. The solid-liquid separation is used, and the ash is used as a product to be used for a cement mixed material, etc. (Industrial Applicability) I The present invention is applicable to a self-igniting coal thermal power plant or a fluidized bed combustion furnace. Fly ash can efficiently remove unburned carbon. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of the removal of unburned carbon in the fly ash of the present invention. Fig. 2 is an unburned carbon in the fly ash of the present invention. The schematic configuration of the removal device is an enlarged top view of the main part of the surface modification machine. Fig. 4 is an enlarged part of the surface modification machine. Fig. 5(a) is a state diagram when the collector is added, (b) is a state diagram when the surface is modified, and (c) is a state diagram when the flotation machine is used. Fig. 6 includes the present invention. Side view of the vertical plane. Partial sectional view of the straight multi-stage agitation tank [Main 10 11 7 series of high-speed shear mixers included - partial cross-section of the side view elements symbol description] Blade 312XP/Invention Manual (Capture)/96._〇〇754 1362967 12, 21, 38, 51, 62 Pump 13 20 22 30 31 31a 31b -•31c .32 33 Slurry Supply Tube Collector Tank Capture Agent injection tube surface modification device surface modification machine first surface modification machine second surface modification machine third surface modification machine connection tube agitation tank 34 mixer 35 '105 rotary shaft 37 • 39 40 41 36 ' 61 ' 106 Stirring blade motor bypass passage bypass inlet bypass outlet 42, 43 45 50 60 70 101 Valve wear body foaming agent tank adjustment tank flotation machine vertical multi-stage mixing tank 312XP / invention manual (supplement) / 96-04 / 96100754 16 1362967 102 Vertical agitation tank 104 Partition wall 109 Slurry inlet 110 Slurry row Exit a fly ash a, ash b unburned carbon • d water (unburned carbon) slurry d, modified slurry d” slurry after addition of blowing agent e collector f foaming agent i bubble (not Burning carbon) j tailings (flying ash) • L spacing (gap) n bubble 312XP / invention manual (supplement) /96-04/96100754 17