KR20000019397A - Reverse current and baffle column floating matter dividing device for dividing minerals and unburned carbon in coal lime - Google Patents

Reverse current and baffle column floating matter dividing device for dividing minerals and unburned carbon in coal lime Download PDF

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Publication number
KR20000019397A
KR20000019397A KR1019980037462A KR19980037462A KR20000019397A KR 20000019397 A KR20000019397 A KR 20000019397A KR 1019980037462 A KR1019980037462 A KR 1019980037462A KR 19980037462 A KR19980037462 A KR 19980037462A KR 20000019397 A KR20000019397 A KR 20000019397A
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South Korea
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unburned carbon
column
coal ash
compressed air
coal
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KR1019980037462A
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Korean (ko)
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KR100297279B1 (en
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이재근
이정언
구재현
신진혁
김성찬
안영철
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이재근
이정언
구재현
김성찬
안영철
신진혁
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores
    • B03D2203/08—Coal ores, fly ash or soot

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

PURPOSE: A reverse current and a baffle column dividing device is provided to produce a good quality of coal by efficiently dividing and to improve the recycling rate of the coal lime. CONSTITUTION: A reverse current and a baffle column dividing device is composed of: a mineral recollecting tub(9) on the lower side and an unburned carbon recollecting tub(10) on the upper side; a reverse current baffle column(1) supplied the compressed air from the ejector of an aeration system; an aeration system(20 for generating a fine bubble by mixing the coal lime slurry absorbed from a centrifugal pump(8) with the compressed air; a pressure regulation device(7) and a flow meter(6) for mixing the compressed air flowed in from a venturi tube(5) with the mineral liquid absorbed from the column with a right pressure in a right amount; a conditioning tank(11) for coating a water holding agent on the particle surface of the hydrophobic unburned carbon by mixing and agitating a foaming agent and a water holding agent in the cola lime in a slurry state.

Description

석탄회에서 광물질과 미연탄소를 분리하기 위한 역류 컬럼 및 배플 컬럼 부유 분리장치Countercurrent and Baffle Column Suspension Separators for Separation of Minerals and Unburned Carbon from Fly Ash

본 발명은 화력 발전소 등에서 배출되는 석탄회중의 광물질과 미연탄소분을 분리하여 석탄회내의 광물질과 미연탄소를 재활용하기 위한 것으로, 본 발명의 특징은 보다 효율적인 분리가 가능하게 하여 양질의 석탄회를 생산할 수 있게 하고 이로부터 석탄회의 재활용비율을 더욱 높일 수 있도록 한 것이다.The present invention is to recycle the mineral and unburned carbon in the coal ash by separating the minerals and unburned carbon powder from coal ash discharged from the coal-fired power plant, etc., the characteristics of the present invention is to enable more efficient separation to produce high quality coal ash From this, the recycling rate of coal ash was further increased.

유연탄은 제철, 발전 및 시멘트 산업에서 해마다 많은 량(국내의 경우 연간 3,200만톤)을 소비하고 있으며, 특히 발전연료로서 사용하고 있는 유연탄의 사용량 이 증가함에 따라 당연히(국내의 경우 석탄회 발생량은 96년도에 400만톤 정도이며 2005년까지 유연탄 화력발전소의 건설이 20호기 추가 건설 예정으로 되어 있어 석탄회 발생량은 600만톤으로 예상된다.) 석탄회의 발생량이 지속적으로 증가될 것이라 예상되고 있다.Bituminous coal consumes a large amount (32 million tons per year in Korea) annually in the steelmaking, power generation, and cement industries.In particular, as the amount of bituminous coal used as power generation fuel increases, Coal ash is expected to reach 6 million tons due to the addition of 20 units of bituminous coal-fired power plants by 2005. 6) Coal ash is expected to increase continuously.

석탄회는 SiO2, Al2O3, Fe2O3와 같은 유용한 광물산화물이 90%있고, 미연탄소인 석탄이 10%함유되어 있어 자원재활용에 큰 가치가 있음에도 불구하고 해양매립 등의 방법으로 처분됨에 따라 환경문제가 발생할 뿐만 아니라 이로 인하여 발전소 건설시 상당한 민원이 발생하고 있는 실정이다.Coal ash contains 90% of useful mineral oxides such as SiO 2 , Al 2 O 3 , Fe 2 O 3, and 10% of unburned carbon coal, which has great value for resource recycling. As a result, not only environmental problems occur, but due to this, considerable civil complaints occur in the construction of power plants.

석탄회에서 광물질과 미연탄소를 분리하여 산화광물은 콘크리트혼화재, 시멘트대용재, 그리고 화장품, 섬유, 반도체의 필러 등으로 재활용이 가능하며, 미연탄소는 재연료, 야금용 탄소, 흡착제 등으로 이용이 가능하다.By separating minerals and unburned carbon from coal ash, oxidized minerals can be recycled as concrete admixtures, cement substitutes, and fillers for cosmetics, textiles, and semiconductors, and unburned carbon can be used as refuel, metallurgical carbon, and adsorbents. Do.

이와 같은 석탄회 내의 광물질과 미연탄소를 재활용하기 위해서는 미연탄소분의 함량이 0.3%인 순도 99.7%의 광물질과 광물성분의 함량이 22%인 순도 78%의 미연탄소를 분리해 내어야 하는 과제를 필요로 하게 된다.The recycling of minerals and unburned carbon in coal ash requires the task of separating unburned carbon with a purity of 99.7% with an unburned carbon content of 0.3% and 78% with a purity of 22% with a mineral content. do.

종래의 석탄회 재활용을 위한 석탄회 분리기술은 큰 입자와 작은 입자의 원심력을 이용한 풍력분급장치가 있으나 미연탄소분의 함량이 4%인 순도 96%의 광물질을 분리해 내는 정도에 불과하여 콘크리트 혼화재용으로만 재활용할 수 있게 되고 미연탄소분은 전량 폐기하고 있어 재활용 효율이 낮고 재활용 원료의 질이 떨어질 뿐만 아니라 미연탄소분을 폐기함에 따라 2차 오염을 유발하는 실정이다.Conventional coal ash separation technology for recycling coal ash has a wind classification device using centrifugal force of large particles and small particles, but it only removes minerals having a purity of 96% with a content of 4% unburned carbon powder and is only used for concrete admixtures. It is possible to recycle and discard all unburned carbon powder, so that the recycling efficiency is low, the quality of recycled materials is not only degraded, and the unburned carbon powder is disposed of, causing secondary pollution.

이에 본 발명에서는 석탄회에 함유된 미연탄소와 산화광물질을 각각 분리하여 양질의 석탄회를 생산토록 함으로서 각 성분의 재활용 비율을 높임과 아울러 석탄회로 인하여 발생하는 제반 문제를 해결하고자 하는 것이다.Therefore, the present invention is to solve the problems caused by the coal circuit and increase the recycling rate of each component by separating the unburned carbon and the oxide minerals contained in the coal ash to produce high quality coal ash.

도 1은 본 발명의 역류 배플 컬럼 부유 분리 장치의 구성도1 is a block diagram of a countercurrent baffle column floating separator of the present invention

도 2는 본 발명의 역류 배플 컬럼의 구성도2 is a block diagram of a countercurrent baffle column of the present invention

도 3은 기포발생장치의 구성도3 is a configuration diagram of the bubble generator

도 4는 분사기의 구성도4 is a block diagram of an injector

☞ 도면의 주요부분에 사용된 부호에 대한 설명 ☜☞ Explanation of symbols used in the main part of the drawing ☜

1;역류 배플 컬럼 2;기포발생장치(Aeration system)1; countercurrent baffle column 2; aeration system

3;고정형 직류관 믹서(Static In-Line Mixer) 4;믹서3; Static In-Line Mixer 4; Mixer

5;벤츄리관 6;유량계5; Venturi tube 6; Flow meter

7;압력조절기 8;원심펌프7; pressure regulator 8; centrifugal pump

9;광물질회수조 10;미연탄소회수조9; mineral recovery tank 10; unburned carbon recovery tank

11;교반조 12;분사기11; stirring 12; sprayer

도 1은 본 발명의 역류 컬럼 부유분리장치의 구성도로서,1 is a block diagram of a countercurrent column separation apparatus of the present invention,

역류 배플 컬럼 부유분리장치는 역류 배플 컬럼1, 기포발생장치2, 광물질 회수 조9, 미연탄소 회수조10, 교반조11 등으로 구성된다.The countercurrent baffle column floating separator comprises a countercurrent baffle column 1, a bubble generator 2, a mineral recovery tank 9, an unburned carbon recovery tank 10, a stirring tank 11 and the like.

석탄회에 함유되어 있는 미연탄소분은 소수성이어서 기포에 부착되어 컬럼1의 상부로 이동하고 광물질은 친수성이어서 컬럼1의 하부로 내려와 분리되는 것이다.The unburned carbon powder contained in the coal ash is hydrophobic and adheres to the bubbles and moves to the top of column 1, and the mineral is hydrophilic, so it is lowered to the bottom of column 1 and separated.

이때 두 물질의 분리에 영향을 미치는 요소는 기포와 미연탄소분간의 충돌율 증대와 미세한 기포를 발생시키는 것이다.At this time, the factors affecting the separation of the two materials is to increase the collision rate between the bubble and unburned carbon and to generate fine bubbles.

기포의 크기는 미연탄소 입자와의 충돌효과를 증대시키는 중요한 변수로 작용하는 바, 기포의 크기가 300㎛ 보다 작을 때 보다 높은 분리효율을 얻을 수 있다.The bubble size acts as an important parameter to increase the collision effect with the unburned carbon particles, it is possible to obtain a higher separation efficiency when the bubble size is less than 300㎛.

고정형 직류관 믹서(Static In-Line Mixer)3와 벤츄리관5으로 구성된 미세 기포발생장치(Aeration system)2는 석탄회 슬러리를 원심펌프8로 흡입하여 이들이 벤츄리관5을 통과할 때 압축공기와 혼합되어 직류관 믹서3를 통과하면서 기포가 발생되게 하는 것이다.Aeration system 2, consisting of a static in-line mixer 3 and a venturi tube 5, sucks the coal ash slurry into a centrifugal pump 8 and mixes it with compressed air as it passes through the venturi tube 5. Bubbles are generated while passing through the DC tube mixer 3.

직류관 믹서3는 관내에 선회류 모양의 믹서4가 장착되어 있는 것으로, 벤츄리관5을 통과하여 믹서4로 유입된 공기와 석탄회 슬러리는 선회류를 따라 이동하면서 공동현상(Cavitation)에 의해 미세기포가 생성된다.The DC tube mixer 3 is equipped with a swirling flow mixer 4 in the tube. The air and coal ash slurry introduced into the mixer 4 through the venturi tube 5 move along the swirling flow, and are finely bubbled by cavitation. Is generated.

벤츄리관5으로 유입되는 압축공기는 압력조절기7와 유량계6를 통과하면서 정압과 정량으로 컬럼1에서 흡입한 광액과 혼합되도록 하게 되고, 이와 같이 컬럼1 내로 유입된 미세 기포는 소수성의 석탄회 입자가 부착되어 컬럼1의 상부로 부유하게 된다.The compressed air flowing into the venturi tube 5 passes through the pressure regulator 7 and the flow meter 6 so as to be mixed with the mineral liquid sucked from the column 1 at a constant pressure and quantitative rate. Thus, the microbubbles introduced into the column 1 adhere to the hydrophobic coal ash particles. And floats to the top of column 1.

상기한 기포발생장치2는 도 4의 분사기(Sparge)12와 같이 다양한 분사장치 등으로 대신하여 실시할 수 있다.The bubble generator 2 may be implemented in place of various injectors, such as the injector (Sparge) 12 of FIG.

도 2는 미세기포와 미연탄소분의 충돌율을 증대시키기 위해 컬럼내 난류유동을 강화한 역류 배플 컬럼1의 구성도이다.2 is a block diagram of a countercurrent baffle column 1 that enhances turbulent flow in a column in order to increase the collision rate of microbubbles and unburned carbon powder.

컬럼1은 상기한 기포발생장치2에서 생성된 미세기포가 광액상의 소수성 입자와 효과적으로 충돌 및 부착될 수 있도록 L/D(컬럼 길이와 직경의 비)를 30으로 함이 바람직하다.In the column 1, the L / D (ratio of the column length and diameter) is preferably set to 30 so that the microbubbles generated in the bubble generator 2 can effectively collide with and attach to the hydrophobic particles in the liquid phase.

도 3은 본 발명중 미세기포 발생장치의 구성을 보인 것이다.Figure 3 shows the configuration of the microbubble generating device of the present invention.

미세기포의 발생정도를 일정하게 유지하고 컬럼1내의 기포층을 일정하게 유지하기 위하여 미세 기포발생장치2의 에젝터에 압축공기(1kg/cm2)를 공급한다.Compressed air (1kg / cm 2 ) is supplied to the ejector of the microbubble generating device 2 in order to maintain a constant level of microbubbles and to maintain a constant bubble layer in the column 1.

이와 같이 컬럼1내로 압축공기가 공급되면 컬럼1내에서 분리된 광물질은 컬럼1의 하부측 광물질 회수조9에서 수거되고, 미연탄소분은 미세기포에 부착되어 컬럼2의 상부측 미연탄소 회수조10에서 회수된다.As such, when compressed air is supplied into the column 1, the minerals separated in the column 1 are collected in the mineral recovery tank 9 at the lower side of the column 1, and the unburned carbon powder is attached to the microbubble in the unburned carbon recovery tank 10 at the upper side of the column 2. It is recovered.

한편, 컬럼1 내에는 석탄회 입자, 기포 그리고 물이 서로 작용하는 광액층과 컬럼1 상부의 기포층이 소정 높이로 이루어진다.Meanwhile, in the column 1, the mineral liquid layer in which the coal ash particles, the bubbles, and the water interact with each other, and the bubble layer above the column 1 have a predetermined height.

컬럼1의 상부측에는 기포에 부착되어 상승한 고탄소 석탄회를 회수할 수 있는 석탄회 회수탱크(Froth side tank, 즉 미연탄소 회수조10)가 설치되며, 컬럼의 하부측에는 정제석탄회를 회수할 수 있는 정제회 회수조(Tail side tank, 즉 광물질 회수조9)가 설치된다.On the upper side of the column 1, a coal side recovery tank (i.e., unburned carbon recovery tank 10) is installed to recover the high carbon coal ash attached to the bubbles, and the refined ash to recover the refined coal is located on the lower side of the column. A tail side tank (ie, a mineral recovery tank 9) is installed.

교반조(Conditioning tank)11에서는 슬러리 상태의 석탄회에 기포제와 포수제를 혼합하여 1200rpm으로 교반(Agitation)하여 포수제가 소수성인 미연탄소의 입자 표면에 코팅(hydrophobic coating)되게 하여 분리효율을 향상시킨다.In the mixing tank 11, the foaming agent and the catcher are mixed with the coal ash in the slurry state and stirred at 1200 rpm to improve the separation efficiency by allowing the catcher to be coated on the surface of the hydrophobic unburned carbon particles.

이하 본 발명을 실시예를 통하여 구체적으로 살펴보면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to Examples.

실시예Example

표 1은 본 발명 장치를 이용하여 11%의 미연탄소가 함유된 석탄회를 분리한 결과를 나타낸 것이다.Table 1 shows the results of separating the coal ash containing 11% unburned carbon using the present invention.

컬럼1은 상기에 살펴본 바와 같이 기포발생장치2에서 생성된 미세기포가 광액상의 소수성 입자와 효과적으로 충돌 및 부착될 수 있도록 L/D(컬럼1의 길이와 직경의 비)를 30으로 하였다. (높이 240㎝, 직경 8㎝)As described above, the L / D (the ratio of the length and the diameter of the column 1) was set to 30 so that the micro bubbles generated in the bubble generator 2 effectively collide with and adhere to the hydrophobic particles in the photoliquid. (240cm high, 8cm in diameter)

그리고, 벤츄리관으로 유입되는 압축공기는 압력조절기7와 유량계6를 통과하면서 압력 1㎏/㎠의 정압과 유량 7 lmp의 정량으로 컬럼1에서 흡입한 광액과 혼합되도록 하였고, 이때 소수성 미연탄소분에 부착될 기포의 크기는 200㎛ 정도의 미세기포이다The compressed air flowing into the venturi tube was passed through the pressure regulator 7 and the flow meter 6 and mixed with the mineral liquid sucked from the column 1 at a constant pressure of 1 kg / ㎠ and a flow rate of 7 lmp. The size of the bubble to be is a micro bubble of about 200㎛

또한, 컬럼1 내에서 석탄회 입자, 기포 그리고 물리 서로 작용하는 광액층과 컬럼1 상부의 기포층으로 이루어지는 기포층의 높이는 45㎝가 되도록 하였다.In addition, the height of the bubble layer made up of the coal-liquid particles, bubbles, and the physical liquid layer interacting with each other and the bubble layer on the column 1 in the column 1 was set to 45 cm.

콜렉터(Collector;입자의 표면에 소수성을 강화시켜 분리효과를 증대시키기 위한 포수제)로 정제등유(Kerosene), 프로더(Frother;장치 내에 미세 기포 발생하는 기포제)로 MIBC(Methyl Iosbutyl Carbinol)를 각각 석탄회 1톤당 12리터씩 공급하여 분리한 결과 콘크리트혼화재, 시멘트대용재, 그리고 화장품, 섬유, 반도체의 필러로서 사용할 수 있는 정제석탄회(미연탄소분이 제거된 석탄회)의 경우 미연탄소분의 함량이 0.32%함유된 고순도의 석탄회를 86.2% 회수하였다.MIBC (Methyl Iosbutyl Carbinol) as a collector (Kerosene) and a feeder (foaming agent that generate micro bubbles in the device), respectively, as a collector (catcher to enhance the hydrophobicity on the surface of particles) As a result of supplying 12 liters of coal ash per ton, refined coal ash, which is used as filler in cosmetics, textiles and semiconductors, contains 0.32% of unburned carbon powder. 86.2% of high-purity coal ash was recovered.

그리고 재연료, 야금용 탄소, 흡착제 등으로 사용이 가능한 미연탄소(석탄성분)의 경우 미연탄소의 함량이 77.5%이고 13.8% 회수하였다.In the case of unburned carbon (coal component) that can be used as a re-fuel, metallurgical carbon, and adsorbent, the unburned carbon content was 77.5% and 13.8% was recovered.

Frother : 기포제로서 장치 내에 미세 기포를 발생하는데, MIBC를 사용하였음Frother: MIBC was used to generate fine bubbles in the device as a foaming agent.

Collector : 포수제로서 입자의 표면에 소수성을 강화시켜 분리효과를 증대시기는 것으로 정제등유(Kerosene)을 사용하였음Collector: As a catcher, refined kerosene is used to enhance the separation effect by enhancing hydrophobicity on the surface of particles.

Wt(%) : 수율(收率)로서 공급된 석탄회에 대하여 분리한 후 회수한 양Wt (%): yield recovered after separation for the coal ash supplied as yield

Assay : 분리된 석탄회의 미연탄소분 함량을 KS L-5405로 분석한 값Assay: The value of unburned carbon content of separated coal ash analyzed by KS L-5405.

Recovery : 회수율(回收率)로서 공급된 석탄회중 미연탄소와 산화광물질의 회수량Recovery: Recovery of unburned carbon and oxide minerals in the coal ash supplied as recovery rate

이상에서 살펴본 바와 같이 본 발명의 역류 배플 및 역류 컬럼 부유 분리 장치는 발전소에서 배출되어 전량 폐기되고 있는 석탄회를 효율적으로 분리하여 건축용 원료로 활용이 가능한 정제석탄회(산화광물질)과 재연료 및 흡착제 등으로 사용이 가능한 미연탄소(석탄)으로 분리함에 따라 다음과 같은 여러 가지 효과를 얻을 수 있다.As described above, the countercurrent baffle and countercurrent column floatation separator of the present invention efficiently separates the coal ash discharged from the power plant and can be used as a raw material for construction, and can be used as a raw material for construction. Separation into usable unburned carbon (coal) has several effects:

첫째, 기술적 측면에서 석탄회의 정제 기술 향상과 고순도의 석탄회 정제기술 의 개발,First, in terms of technology, the improvement of coal ash refining technology and the development of high purity coal ash refining technology,

둘째, 경제 및 환경적 측면에서 시멘트 대용 및 콘크리트 혼화재로 재활용시 원료대체효과, 고순도 정제 석탄회 회수에 따라 섬유, 반도체, 고부가가치 재료로 활용가능, 80% 이상의 미연탄소분이 함유된 석탄회를 활성탄 및 재연료로 사용가능, 석탄회 매립지 부지 축소로 발전소의 설계수명 연장, 석탄회의 해양매립을 최소화함에 따라 해양오염 유발을 방지,Second, in terms of economic and environmental aspects, it can be used as a fiber, semiconductor, and high value-added material by replacing raw materials and recycling high-purity refined coal ash when it is replaced with cement and concrete admixture. Can be used as fuel, extends the design life of power plant by reducing coal ash landfill, minimizes marine landfill of coal ash, and prevents marine pollution.

셋째, 부대효과로서 고순도 석탄회의 활용영역 확대, 발전소 건설 및 운용시 환경영향 평가 상향조정에 기여, 기존 발전소의 회사장 확장 보류 및 신설발전소 건설시 회사장 축소로 부담경감 등의 여러 효과와 잇점을 기대할 수 있게 되는 것으로, 본 발명은 상기 언급한 바 외에도 상당한 경제적 이익과 함께 환경보호 등에도 일조할 수 있는 등의 여러 잇점을 기대할 수 있다.Third, as a side effect, it contributed to the expansion of utilization area of high-purity coal ash, contributing to the improvement of environmental impact assessment in the construction and operation of power plants, withholding the expansion of the company's head of existing power plants and reducing the burden of the head of construction of new power plants. As can be expected, in addition to the above, the present invention can be expected to have various advantages such as being able to contribute to environmental protection and the like with considerable economic benefits.

Claims (1)

하부측에 광물질 회수조9와 상부측에 미연탄소 회수조10가 각각 마련되고 기포발생장치2에서 생성된 미세기포가 광액상의 소수성 입자와 충돌 및 부착될 수 있도록 길이와 직경의 비가 30으로 구성되며 기포발생장치2의 에젝터로부터 압축공기가 공급되는 역류 배플 컬럼1,The mineral recovery tank 9 at the lower side and the unburned carbon recovery tank 10 at the upper side are respectively provided, and the ratio of length and diameter is 30 so that the microbubbles generated in the bubble generator 2 can collide with and attach to the hydrophobic particles in the mineral liquid. And backflow baffle column 1, through which compressed air is supplied from the ejector of the bubble generator 2. 관내에 선회류의 믹서4가 장착된 고정형 직류관 믹서3와 벤츄리관5으로 구성되어 원심펌프8로부터 흡입된 석탄회 슬러리를 압축공기와 혼합하여 미세 기포를 발생시키는 기포발생장치2,Bubble generator 2 composed of fixed DC tube mixer 3 and venturi tube 5 equipped with mixer 4 of swirling flow in the tube to generate fine bubbles by mixing coal ash slurry sucked from centrifugal pump 8 with compressed air; 벤츄리관5으로 유입되는 압축공기가 정압과 정량으로 컬럼1에서 흡입한 광액과 혼합되도록 하기 위한 압력조절기7 및 유량계6,Pressure regulator 7 and flow rate meter 6, so that the compressed air flowing into the venturi tube 5 is mixed with the mineral liquid sucked from the column 1 at a constant pressure and a fixed amount. 상기 슬러리 상태의 석탄회에 기포제와 포수제를 혼합, 교반하여 포수제가 소수성인 미연탄소의 입자 표면에 코팅되게 하는 교반조(Conditioning tank)11로 이루어진 것을 특징으로 하는 석탄회에서 광물질과 미연탄소를 분리하기 위한 역류 컬럼 및 배플 컬럼 부유 분리장치Separating minerals and unburned carbon from coal ash comprising a stirring tank (Conditioning tank) 11 to mix and stir the foaming agent and the catcher to the slurry of coal ash, so that the catcher is coated on the surface of the hydrophobic unburned carbon particles. And Baffle Column Suspension Separators
KR1019980037462A 1998-09-08 1998-09-08 Countercurrent and baffle flotation column apparatus for separating unburned carbon and mineral from fly ash KR100297279B1 (en)

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KR100751241B1 (en) * 2005-12-13 2007-08-23 주식회사 에스에프에이 Apparatus for making ozone water
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KR101504511B1 (en) * 2012-08-03 2015-03-20 코카스엔텍 주식회사 Valuable Mineral Collection Method From Fly Ash By Particle Separation
CN105964418A (en) * 2014-04-11 2016-09-28 衢州市优德工业设计有限公司 High-reliability flotation column
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WO2021258632A1 (en) * 2020-06-22 2021-12-30 中国矿业大学 Pre-flotation high efficiency slurry conditioning device for wide-particle-grade flotation

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