KR101402937B1 - A Method for floatation bottom ash from unburned coal - Google Patents
A Method for floatation bottom ash from unburned coal Download PDFInfo
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- KR101402937B1 KR101402937B1 KR1020120067364A KR20120067364A KR101402937B1 KR 101402937 B1 KR101402937 B1 KR 101402937B1 KR 1020120067364 A KR1020120067364 A KR 1020120067364A KR 20120067364 A KR20120067364 A KR 20120067364A KR 101402937 B1 KR101402937 B1 KR 101402937B1
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- bottom ash
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- separated
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- 239000010882 bottom ash Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title abstract description 19
- 239000003245 coal Substances 0.000 title description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000007873 sieving Methods 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims description 6
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000007667 floating Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- 238000005188 flotation Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004484 Briquette Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000008247 solid mixture Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000010718 automatic transmission oil Substances 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009291 froth flotation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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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
- B03D1/02—Froth-flotation processes
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
-
- 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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- Processing Of Solid Wastes (AREA)
Abstract
본 발명은 바텀애쉬 부유선별방법에 관한 것으로서, 바텀애쉬를 체선별하는 체선별단계; 상기 체선별된 바텀애쉬에 물과 포수제를 투입하여 혼합하는 혼합단계; 상기 혼합된 바텀애쉬에 에어를 주입하여 미연탄소를 상기 바텀애쉬로부터 분리시키는 제1분리단계; 상기 미연탄소가 분리된 바텀애쉬로부터 자력산물을 분리하는 제2분리단계; 상기 자력산물이 분리된 바텀애쉬로부터 물을 분리하는 제3분리단계; 상기 물이 분리된 바텀애쉬를 건조하는 건조단계; 를 포함하는 것을 특징으로 하는 바텀애쉬 부유선별방법을 제공하여, 미연탄소를 제거함으로써 토목용, 건축용 골재로의 사용이 가능한 장점이 있다.The present invention relates to a bottom ash floating sorting method, comprising: a sieving step of sieving a bottom ash; A mixing step of adding water and a capturing agent to the bottom ash selected and mixing the bottom ashes; A first separating step of separating the unburned carbon from the bottom ash by injecting air into the mixed bottom ash; A second separation step of separating the magnetic product from the bottom ash from which the unburnt carbon is separated; A third separation step of separating water from the bottom ash from which the magnetic force product is separated; Drying the bottom ash from which the water has been separated; The present invention provides a method for sorting bottom ash floats by removing unburned carbon, which can be used as aggregates for civil engineering and construction.
Description
본 발명은 바텀애쉬 부유선별방법에 관한 것이다.The present invention relates to a bottom ash floating sorting method.
현재 인류는 지구온난화로 인한 물부족 및 이상기후와 그로 인한 식량위기, 에너지 고갈 등의 문제에 직면해 있다.At present, human beings are faced with problems such as water shortages due to global warming, abnormal climate, food crisis and energy exhaustion.
산업화로 인한 에너지 수요의 폭발적 증가와 석탄 화석연료의 대량이용을 통해 석탄연소폐기물의 대량생산이라는 환경문제로 이어져 석탄연소폐기물의 처리방법 또는 활용방법에 대한 기술들이 등장하였다.The explosion of energy demand due to industrialization and the mass use of coal fossil fuels led to environmental problems such as the mass production of coal combustion wastes, and techniques for treating or utilizing coal combustion wastes appeared.
석탄재는 보통 발생되는 출처별로 크게 비산재(Fly ash)와 바텀애쉬(바닥재)로 나누어진다. Coal materials are usually divided into fly ash and bottom ash for each source.
이중에서 바텀애쉬는 발전소 보일러 노벽, 과열기, 재열기 등에 부착되어 있다가 자중에 의해 보일러 바닥으로 떨어진 것을 말한다. Bottom ash is attached to the boiler furnace wall, superheater, reheater, etc. of the power plant, and falls to the bottom of the boiler by its own weight.
일반적으로 바텀애쉬의 입경은 대부분 30㎜이하이며, 대부분은 Ash Pond에 버려지고 있으며, 재활용율은 극히 낮다.Generally, the particle size of bottom ash is mostly less than 30 mm, most of which is discarded in Ash Pond, and the recycling rate is extremely low.
바텀애쉬는 회매립장에 보통 단순매립을 통하여 매립처분 하는데 막대한 처리비용 등의 여러 가지 문제점을 야기하고 있으며, 특히 우리나라와 같이 국토가 넓지 않은 관계로 매립을 통한 처분은 국토의 효율적인 이용에 부합되지 않는 문제가 있다.Bottom ash causes many problems such as disposal of landfill in landfill site through simple landfill. In particular, disposal through landfill is incompatible with the efficient use of land there is a problem.
따라서, 해마다 발생량과 매립량이 점점 늘어가는 바텀애쉬의 자원 재활용의 필요성이 대두되고 있는 실정이다.Therefore, there is a growing need for recycling of bottom ash, which is increasing in quantity and amount of landfill each year.
종래의 바텀애쉬에는 미연탄소, 즉 화력발전소 등에서 분탄이 완전히 연소하지 아니하고 남은 탄소재가 다량 포함되어 있었기 때문에 이를 자원으로써 재활용하는 것에는 한계가 있었고 결국 버려지게 되는 바텀애쉬로 인해 환경오염의 문제가 있었다.
In the conventional bottom ash, unburned carbon, that is, a coal-fired power plant, contained a large amount of remaining carbon material because the coal was not completely burned. Therefore, there was a limitation in recycling it as a resource and there was a problem of environmental pollution due to a bottom ash that was eventually abandoned .
선행기술문헌 : 한국등록특허 제0749757호
Prior Art Document: Korean Patent No. 0749757
종래기술인 한국등록특허 제0749757호는 부유선별에 의한 연탄재 중 미연소 석탄을 분리회수하는 방법을 개시한다.Korean Patent Registration No. 0749757 discloses a method for separating and recovering unburned coal in a briquette material by floating sorting.
한국등록특허 제0749757호가 제시하는 기술은 연탄재에 남아 있는 미연소석탄을 회수하여 에너지원으로 재활용하는 기술로서 앞서 언급한 바텀애쉬를 재활용하는 기술은 전혀 언급하고 있지 아니하여 환경오염을 줄이지 못하는 근본적인 문제점을 여전히 내포하고 있는 것이다.The technology proposed by Korean Patent No. 0749757 is a technology for recovering the unburned coal remaining in the briquette and recycling it as an energy source. Since it does not mention the above-mentioned technology for recycling the bottom ash, it is a fundamental problem Is still implied.
따라서 본 발명은 상기 문제를 해결하기 위해 안출된 것으로, 바텀애쉬 부유선별방법을 제공하여 강열감량이 탄종별, 품질별로 다른 바텀애쉬(Bottom ash)의 강열감량을 일정하게 KS L 5405 기준 3% 이하로 선별하여, 석탄재 물리적, 화학적 특성 시험의 재료로 사용하고, 친환경 바이오 건조모르터의 혼화재료 선정 및 모르터 배합설계의 잔골재로 사용하는데 목적이 있다. Accordingly, the present invention has been devised to solve the above problems, and it is an object of the present invention to provide a method of selecting a bottom ash suspension so that the ignition loss of Bottom ash, , It is used as a material for physical and chemical characteristics test of coal ash, and it is used as fine aggregate of environmentally friendly bio-dried mortar for selection of admixture material and mortar mixture design.
위와 같은 과제를 해결하기 위해 본 발명은 바텀애쉬를 체선별하는 체선별단계; 상기 체선별된 바텀애쉬에 물과 포수제를 투입하여 혼합하는 혼합단계; 상기 혼합된 바텀애쉬에 에어를 주입하여 미연탄소를 상기 바텀애쉬로부터 분리시키는 제1분리단계; 상기 미연탄소가 분리된 바텀애쉬로부터 자력산물을 분리하는 제2분리단계; 상기 자력산물이 분리된 바텀애쉬로부터 물을 분리하는 제3분리단계; 상기 물이 분리된 바텀애쉬를 건조하는 건조단계; 를 포함하는 것을 특징으로 하는 바텀애쉬 부유선별방법을 포함하는 것을 특징으로 하는 바텀애쉬 부유선별방법을 포함한다. In order to solve the above-mentioned problems, the present invention provides a method of separating bottom ash, A mixing step of adding water and a capturing agent to the bottom ash selected and mixing the bottom ashes; A first separating step of separating the unburned carbon from the bottom ash by injecting air into the mixed bottom ash; A second separation step of separating the magnetic product from the bottom ash from which the unburnt carbon is separated; A third separation step of separating water from the bottom ash from which the magnetic force product is separated; Drying the bottom ash from which the water has been separated; And a bottom ash floating sorting method according to the present invention.
또한, 상기 체선별 단계는 최대치수 5mm이하로 선별하고, 상기 혼합단계는 바텀애쉬 10kg당 포수제 120㎖를 두 번 나누어 넣은 뒤 1,575rmp으로 5분간 혼합하며, 상기 제1분리단계는 혼합된 셀에 공기를 주입하면서 1,306rpm 속도로 반응을 시키면서 부유되는 미연탄소를 바텀애쉬로부터 분리시키고, 상기 제2분리단계는 자력 선별기를 포함하며, 상기 제3분리단계는 필터페이퍼를 이용하여 물을 분리하고,상기 건조단계는 드라이오븐을 이용하여 건조하는 것을 특징으로 하는 바텀애쉬 부유선별방법을 포함한다.Also, the sieving step is selected to a maximum size of 5 mm or less. In the mixing step, 120 ml of captive agent per 10 kg of bottom ash is divided into two portions and mixed at 1,575 rpm for 5 minutes. Separating the unburned carbon suspended from the bottom ash while reacting at a rate of 1,306 rpm while the second separating step includes a magnetic separator, and the third separating step separates the water using the filter paper , And the drying step is performed using a dry oven.
이상과 같은 본 발명에 따르면 다음과 같은 효과가 있다.According to the present invention as described above, the following effects can be obtained.
미연탄소를 제거함으로써 토목용, 건축용 골재로의 사용이 가능해지는 장점이 있다.By removing unburned carbon, it can be used as aggregate for civil engineering and construction.
도1은 본 발명의 바람직한 실시예에 따른 전체공정도이다.1 is an overall process diagram according to a preferred embodiment of the present invention.
이상과 같은 본 발명의 구체적인 내용을 첨부한 도면을 참조하여 상세히 설명한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
부유선별은 분리하고자하는 고체입자의 표면특성을 이용하는 물리화학적 선별법이다.미연탄소를 제거함으로써 토목용, 건축용 골재로의 사용이 가능해지는 장점이 있다.Float sorting is a physicochemical sorting method that uses surface characteristics of solid particles to be separated. It is advantageous to use as aggregate for civil engineering and construction by removing unburned carbon.
고체혼합물이 현탁되어 있는 광액 내에 기포를 발생시키면 소수성광물은 기포에 부착되어 수면위로 부착되고 반면에 친수성광물은 광액 내에 남게 되는 특성을 이용하는 것이다.When bubbles are generated in the light liquid in which the solid mixture is suspended, hydrophobic minerals are attached to the bubbles and adhere to the water surface while the hydrophilic minerals remain in the liquid.
비극성 표면은 쉽게 물과 접촉하기가 어렵기 때문에 소수성을 나타내지만, 물 분자와 강하게 결합하는 특성을 갖고 있는 물질이 있어 이를 친수성이라고 한다.Nonpolar surfaces are hydrophobic because they are difficult to contact with water easily, but they are called hydrophilic because they have strong binding properties to water molecules.
이러한 원리로 고체 혼합물이 현탁되어 있는 액상 내에 기포를 발생시키면 소수성 물질은 기포에 부착되어 수면 위로 부착되고 반면에 친수성 물질은 액상 내에 남게 된다.In this way, when bubbles are generated in a liquid phase in which a solid mixture is suspended, the hydrophobic substance adheres to the bubbles and adheres to the water surface while the hydrophilic substance remains in the liquid phase.
습윤도(Wettability)는 부유선별에서 물질 표면 친수성에 의거하여 일어나는 현상을 말하며 이는 물질표면이 액체로 어떻게 적셔지느냐에 따라 달라진다. Wettability refers to the phenomenon that occurs based on the surface hydrophilicity of a material in flotation, depending on how the material surface is wetted with the liquid.
부유선별법에는 물에 대한 습윤도가 낮은 광물 입자들이 떠 나와서 수면 위에 층을 이루는 형태에 따라 다유 부선법(bulk-oil flotation), 피막 부선법(skin flotation) 그리고 포말 부선법(froth flotation) 등으로 구분할 수 있다.Flotation screening methods include bulk-oil flotation, skin flotation, and froth flotation depending on the form of layer on the surface of the water, where mineral particles with low wettability to water are released. .
다유 부선법은 기름이나 물에 대한 광물의 선택적 흡착을 이용한 방법이다. 표면장력법은 물의 강한 표면장력으로 인해 물에 잘 웨팅(wetting) 되기 어려운 표면을 가진 미세광물은 수면위에 뜨려는 경향이 있고 물에 잘 웨팅(wetting) 되는 광물은 물속에 가라앉는다.The multi - oil barge method is a method using selective adsorption of minerals to oil or water. The surface tension method is a method in which fine minerals with surfaces that are difficult to wet well with water due to the strong surface tension of the water tend to fall on the surface of the water and minerals that are well wetted by water subside in water.
이와 같은 원리를 이용하여 부유선별을 하였으며 그 중에 광액 중의 다수의 미세한 기포를 발생시켜 기포가 표면에 소수성 광물을 흡착한 후 기포의 부력으로써 수면까지 부유, 광물입자를 회수하는 방법인 포말부유선별법을 이용하였다.By using this principle, the floating sorting is done. Among them, many minute bubbles are generated in the liquid to adsorb hydrophobic minerals on the surface of the bubbles, and the foam floating sorting method, which is a method of collecting the floating particles and mineral particles up to the water surface by buoyancy of the bubbles Respectively.
부유선별에 사용되는 부선시약은 부선작업에 있어서의 그 기능을 따라서 분류하는 것이 타당할 것이다.It would be appropriate to classify the flotation reagents used for float sorting according to their function in flotation.
보다 상세하게 설명하면 부선시약으로는 포집제(collector), 기포제(frother),억제제(depressant),활성제(activator), pH조절제(pH regulating agent), 분산제(dispersing agent) 등이 사용될 수 있다.More specifically, the flotation reagent may be a collector, a frother, a depressant, an activator, a pH regulating agent, a dispersing agent, or the like.
포수제는 목적 광물에만 선택적으로 흡착하여, 그 표면을 소수성화 하는 시약이다. The catching agent is a reagent which selectively adsorbs only the target mineral and hydrophobises the surface thereof.
포수제에 의해 소수성화된 목적 광물은 부선조 속에서 임펠러의 심한 교반에 의해 발생한 많은 량의 기포에 접착되어 액면 위로 떠오른다.The target mineral hydrophobized by the catching agent is adhered to a large amount of bubbles generated by the agitation of the impeller in the subscale and floats on the surface of the liquid.
포수제는 폐유를 사용한 것이 바람직하며, 폐유 중에서도 자동트랜스 미션오일을 사용하는 것이 바람직하다.It is preferable to use waste oil as the catching agent, and it is preferable to use automatic transmission oil among waste oil.
다음으로 본 발명의 바람직한 일실시예에 따른 공정을 첨부한 도면을 참조하여 상술한다.Next, a process according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
바텀애쉬를 바텀애쉬 분취기에 의해 소정량이 되도록 축분한다.The bottom ash is sized to be a predetermined amount by a bottom ash separator.
분취한 바텀애쉬를 드라이 오븐(Dry Oven)을 이용하여 105 ± 5℃에서 24시간, 일정 질량이 될 때까지 건조시킨 후, 바텀애쉬는 실온까지 냉각시킨다.Batch ash is dried in a dry oven at 105 ± 5 ° C for 24 hours to a constant mass, and then the bottom ash is cooled to room temperature.
실온까지 식힌 각 바텀애쉬는 부유선별하기 위한 전처리 과정으로 최대치수 5㎜ 이하로 체가름 선별기를 이용하여 체선별하는 체선별단계(S1)를 거친다.Each bottom ash cooled to room temperature is pretreated by flotation, and is subjected to a screening step (S1) for screening with a sieve sorter having a maximum dimension of 5 mm or less.
체 선별된 유연탄 바텀애쉬를 부유선별기 셀(cell) 안에 충분한 물을 투입한 다음, 바텀애쉬를 10kg 정도를 투입하고 포수제 120㎖를 두 번에 나누어 넣고 나서 물을 충분히 채운다.Submerged bituminous coal bottom ash is filled with enough water in the floating separator cell, then put about 10kg of bottom ash, and 120ml of catcher divided into two times, then fill up with water enough.
부유선별기의 속도를 1,575rpm에서 약 5분간 바텀애쉬와 포수제를 혼합하는 혼합단계(S2)를 거친다.The speed of the floating separator is subjected to a mixing step (S2) in which the bottom ash and the catching agent are mixed at 1,575 rpm for about 5 minutes.
혼합된 셀(cell)에 공기를 주입하면서 1,306rpm의 속도로 반응을 시키면서 부유되는 미연탄소를 바텀애쉬로부터 분리시키는 제1분리단계(S3)를 거친다.And a first separation step (S3) of separating the unburned carbon suspended from the bottom ash while reacting at a speed of 1,306 rpm while injecting air into the mixed cell.
분리된 바텀애쉬를 부유선별기에 연결된 자력 선별기를 이용하여 자력산물을 분리시키는 제2분리단계(S4)를 거친다.And a second separating step (S4) of separating the bottom ash by using a magnetic separator connected to the floating separator.
바텀애쉬 및 미연탄소는 각각 필터페이퍼(Filter Paper)를 이용하여 물을 분리하는 제3건조단계(S5)를 거친다. The bottom ash and unburned carbon are subjected to a third drying step (S5) in which water is separated using a filter paper, respectively.
바텀애쉬를 드라이 오븐(Dry Oven)을 이용하여 건조시켜 최종산물을 얻는 건조단계(S6)를 거친다.The bottom ash is dried using a dry oven to obtain a final product (S6).
본 발명은 이상과 같이 구성되는 바, 본 발명의 목적과 기술적인 사상에 비추어 볼 때 본 발명이 반드시 하기의 구성에 국한되는 것은 아니며 본 발명으로부터 용이하게 창작할 수 있는 정도의 기술 수준은 본 발명의 권리범위에 예속되는 것임은 자명한 것으로 본 발명으로부터 상업적인 설계변경의 수준, 모양의 변화, 재질의 변화, 부품의 숫자 증감, 색상의 변화 등 본 발명의 기술과 균등범위에 있거나 하위개념에 속하는 기술에 대해서는 일일이 언급하지 않음을 밝힌다.The present invention is configured as described above, and the present invention is not necessarily limited to the following embodiments in view of the object and technical idea of the present invention, and the level of skill that can be easily created from the present invention is not limited to the present invention It is to be understood that the present invention is not limited by the scope of the present invention and that the present invention can be applied to various types of products, such as a level of commercial design change, a shape change, a material change, I do not mention anything about technology.
S1 : 체선별단계 S2 : 혼합단계
S3 : 제1분리단계 S4 : 제2분리단계
S5 : 제3분리단계 S6 : 건조단계S1: Screening step S2: Mixing step
S3: first separation step S4: second separation step
S5: third separation step S6: drying step
Claims (2)
바텀애쉬를 체선별하는 체선별단계;
상기 체선별된 바텀애쉬에 물과 포수제를 투입하여 혼합하는 혼합단계;
상기 혼합된 바텀애쉬에 에어를 주입하여 미연탄소를 상기 바텀애쉬로부터 분리시키는 제1분리단계;
상기 미연탄소가 분리된 바텀애쉬로부터 자력산물을 분리하는 제2분리단계;
상기 자력산물이 분리된 바텀애쉬로부터 물을 분리하는 제3분리단계;
상기 물이 분리된 바텀애쉬를 건조하는 건조단계;
를 포함하되,
상기 체선별 단계는 최대치수 5mm이하로 선별하고,
상기 혼합단계는 바텀애쉬 10kg당 포수제 120㎖를 두 번 나누어 넣은 뒤 1,575rpm으로 5분간 혼합하며,
상기 제1분리단계는 혼합된 셀에 공기를 주입하면서 1,306rpm 속도로 반응을 시키면서 부유되는 미연탄소를 바텀애쉬로부터 분리시키고,
상기 제2분리단계는 자력 선별기를 포함하며,
상기 제3분리단계는 필터페이퍼를 이용하여 물을 분리하고,
상기 건조단계는 드라이오븐을 이용하여 건조하여, 강열감량이 탄종별, 품질별로 다른 바텀애쉬의 강열감량을 일정하게 선별하는 것을 특징으로 하는 바텀애쉬 부유선별방법.Drying the collected bottom ash using a dry oven at 105 +/- 5 DEG C for 24 hours until a constant mass is obtained, and then cooling the bottom ash to room temperature;
A screening step of screening bottom ash;
A mixing step of adding water and a capturing agent to the bottom ash selected and mixing the bottom ashes;
A first separating step of separating the unburned carbon from the bottom ash by injecting air into the mixed bottom ash;
A second separation step of separating the magnetic product from the bottom ash from which the unburnt carbon is separated;
A third separation step of separating water from the bottom ash from which the magnetic force product is separated;
Drying the bottom ash from which the water has been separated;
, ≪ / RTI &
The sieving step is selected to have a maximum dimension of 5 mm or less,
In the mixing step, 120 ml of a catcher per 10 kg of bottom ash was divided into two portions, and the mixture was mixed at 1,575 rpm for 5 minutes.
The first separating step separates the suspended unburned carbon from the bottom ash while reacting at a speed of 1,306 rpm while introducing air into the mixed cell,
Wherein the second separating step includes a magnetic separator,
The third separation step separates the water using the filter paper,
Wherein the drying step is carried out by using a dry oven to uniformly detect the ignition loss of the bottom ash by different types and quality of the ignition loss.
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| KR101024540B1 (en) * | 2009-02-13 | 2011-03-31 | 한국지질자원연구원 | A fly ash purify and product collection method |
| KR20120041845A (en) * | 2010-10-22 | 2012-05-03 | 주식회사 케이앤텍 | Recovering method of high purity un-burned carbon and ash using bottom ash |
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| JPH0538468A (en) * | 1991-08-07 | 1993-02-19 | Onoda Cement Co Ltd | Disposal method for coal ash |
| JP2005066591A (en) | 2003-08-01 | 2005-03-17 | Nippon Steel Corp | Apparatus and method for separating unburnt carbon |
| KR101024540B1 (en) * | 2009-02-13 | 2011-03-31 | 한국지질자원연구원 | A fly ash purify and product collection method |
| KR20120041845A (en) * | 2010-10-22 | 2012-05-03 | 주식회사 케이앤텍 | Recovering method of high purity un-burned carbon and ash using bottom ash |
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