KR20150111731A - Recycling of waste graphite method - Google Patents
Recycling of waste graphite method Download PDFInfo
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- KR20150111731A KR20150111731A KR1020140035468A KR20140035468A KR20150111731A KR 20150111731 A KR20150111731 A KR 20150111731A KR 1020140035468 A KR1020140035468 A KR 1020140035468A KR 20140035468 A KR20140035468 A KR 20140035468A KR 20150111731 A KR20150111731 A KR 20150111731A
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- graphite
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- waste graphite
- silicon carbide
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000010439 graphite Substances 0.000 title claims abstract description 59
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 59
- 239000002699 waste material Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004064 recycling Methods 0.000 title claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 27
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000010298 pulverizing process Methods 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000001694 spray drying Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 claims 1
- 239000012774 insulation material Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- -1 chromite Chemical compound 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 235000014380 magnesium carbonate Nutrition 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000008262 pumice Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 241000923606 Schistes Species 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- RREGISFBPQOLTM-UHFFFAOYSA-N alumane;trihydrate Chemical compound O.O.O.[AlH3] RREGISFBPQOLTM-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000002008 calcined petroleum coke Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 235000021174 kaiseki Nutrition 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 235000012245 magnesium oxide Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 229910052611 pyroxene Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/32—Compressing or compacting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/35—Shredding, crushing or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Carbon And Carbon Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
본 발명은 폐 그래파이트(graphite, 흑연, 이하 "흑연"으로 통칭함) 재활용방법에 관한 것으로, 더욱 상세하게는 폐 흑연을 수거한 후 수거된 폐 흑연을 소결, 분쇄, 건조, 성형 등의 공정을 이용하여 흑연부품, 단열재 등으로 제조하여 재사용할 수 있도록 한 폐 그래파이트 재활용방법에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recycling waste graphite (graphite, hereinafter referred to as "graphite") and more particularly to a method of recycling waste graphite collected after sintering, pulverizing, The present invention relates to a method for recycling waste graphite, which can be manufactured by using graphite parts, heat insulating materials, and the like, and reused.
일반적으로 수정과 같은 결정구조를 가지는 육방정계에 속하는 광물로 석묵이라고도 한다. It is a mineral belonging to the hexagonal system which has a crystal structure such as crystal, and is also called "kaolin".
흑색을 띠며 금속광택을 가진다. 전기의 양도체, 연필심·도가니·전기로·아크 등의 전극 등에 사용되며, 연필심·도가니·전기로·아크 등의 전극 등에 사용되며 활마재(滑磨材,부드러운 물질을 갈아,문질러 만든 제품:연필심)로도 사용된다.It is black and has metallic luster. It is used for electric conductor, electrode of pencil lead, crucible, electric arc furnace, arc, etc., and is used for electrodes such as pencil lead, crucible, electric furnace, arc, etc., and is used for a sliding material (smoothed material, ).
그리고 석묵이라고도 한다. 화학성분은 C이다. 거의 순수한 탄소로 이루어지며 다이아몬드와 동질이상(同質異像)이다. And it is also called kaiseki. The chemical composition is C. It is made of almost pure carbon and is homogeneous (homogeneous) with diamond.
인상·편상(片狀)의 결정을 이루지만, 대부분은 괴상·토상(土狀)으로 때로는 콩 모양인 경우도 있다. It forms the impression and the piece shape, but it is mostly massive, earthy, and sometimes bean-shaped.
굳기 1 이하, 비중 1.9∼2.3으로 연하며 지방 모양의 감촉이 있고, 편상의 것은 휜다. 흑색으로 불투명하고 금속광택을 가지며, 조흔색(條痕色)은 흑색이다.Hardness 1 or less, specific gravity 1.9 to 2.3, and there is a feeling of fat-like texture, and the shape of a piece is bent. It is opaque black with metallic luster and streak color is black.
모양에 따라 인상흑연(鱗狀黑鉛)과 토상흑연(土狀黑鉛)으로 나눈다.According to shape, it is divided into graphite (graphite black) and earth graphite (earth black graphite).
인상흑연은 결정편암이나 편마암과 함께 산출되며, 흔히 그것에 수반되는 석회암 속에 산재한다. Impression graphite is produced along with crystalline schist or gneiss, and is often scattered in the limestone that accompanies it.
토상흑연은 화강암·섬록암·유문암·편마암 등 속에 맥 또는 렌즈 모양을 이루고 산출되며, 접촉변질작용(接觸變質作用)에 의하여 석탄에서 변성하여 탄층과 수반하여 산출된다. So - called graphite is formed in the shape of a vein or a lens in granite, diorite, rhyolitic rock, gneiss, etc. It is transformed from coal by contact degeneration and is accompanied with coal bed.
흑연은 다양하게 사용되는 만큼 다양한 대체물질이 존재한다. 그러나 흑연은 대부분이 내화재, 브레이크 라이닝 등처럼 재사용되기 어려울 정도로 "소모"되므로 재활용율이 매우 낮다. 단지 전극은 사용 후 전극을 다시 제조하거나 미정질 흑연의 대체용으로 사용이 가능하다.There are as many alternative materials as graphite is used for various purposes. However, most graphite is so "consumed" that it is difficult to reuse such as refractory, brake lining, etc., so the recycling rate is very low. Only electrodes can be used to remanufacture electrodes after use or to replace microcrystalline graphite.
양극에 쓰이는 합성흑연 대신 타이타늄이 쓰이고, 전지에는 리튬, 망간, 희토류 등이 사용된다. 제철 및 제강용 탄소함량 조절용으로는 하소된 석유코크스, 안쓰라사이트(anthracite), 이미 사용된 전극 등이 대체 가능하다. Titanium is used in place of synthetic graphite used for anodes, and lithium, manganese, and rare earth are used for the battery. In order to control carbon content for steel making and steel making, calcined petroleum coke, anthracite, and already used electrodes can be substituted.
화재의 지연제(遲燃濟) 로는 삼수산화알루미늄(ATH; aluminum trihydrite), 산화안티몬, 보레이트(borate), 브로마인(bromine), 크롬철석(chromite), 규조토, 마그네사이트, 마그네시아, 진주암, 인산염암, 경석 및 질석 등이 사용된다. 마찰제로는 중정석, 보오크사이트, 알루미나, 점토(아타풀자이트, 카올린, 세피올라이트), 석류석, 석고, 운모, 경석, 납석, 실리카, 점판암, 질석, 규회석, 저어콘 등이 사용된다. Fire retardants include aluminum trihydrate (ATH), antimony oxide, borate, bromine, chromite, diatomaceous earth, magnesite, magnesia, perlite, phosphate rock , Pumice stone and vermiculite are used. As the friction agent, there are used barite, borax, alumina, clay (attapulgite, kaolin, sepiolite), garnet, gypsum, mica, pumice, pyroxene, silica, slate, vermiculite, wollastonite and zircon.
윤활제로는 리튬, 운모, 이황화몰리브덴, 활석 등이 사용된다. 내화재로는 홍주석, 보오크사이트, 크롬철석, 남정석, 마그네사이트, 감람석, 엽납석, 내화점토, 실리카, 규선석, 저어콘 등이 쓰인다As the lubricant, lithium, mica, molybdenum disulfide, talc and the like are used. Refractories include Hongju, Baocchite, Chromium, Porphyry, Magnesite, Olivine, Pyrophyllite, Refractory Clay, Silica, Silicate and Zircon
본 발명에서는 흑연을 이용하여 제작되는 도가니를 재사용할 수 할 수 있도록 하다.In the present invention, a crucible manufactured using graphite can be reused.
종래에는 도가니를 제조할 때 도가니의 표면에 산화방지를 목적으로 실리콘카바이드(SiC)를 코딩하여 도가니를 제조하였다.Conventionally, a crucible was produced by coating silicon carbide (SiC) on the surface of a crucible for the purpose of preventing oxidation when producing a crucible.
상기와 같이 제조된 도가니를 재사용하고자할 때 종래에는 코팅된 실리콘카바이드(SiC)를 도가니에서 분리하는 방법이 없었다.There is no conventional method for separating coated silicon carbide (SiC) from the crucible when reusing the crucible manufactured as described above.
이에 따라 폐 흑연을 재사용하지 못하고, 분쇄하여 폐기함으로써 자원이 낭비되는 문제점이 있다.
As a result, waste graphite can not be reused, and pulverized and discarded, thereby wasting resources.
본 발명은 상기와 같은 종래의 문제점을 해결 및 개선하고자 발명된 것으로 다음과 같은 목적을 갖는다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art and has the following objectives.
본 발명은 폐 흑연을 수거한 후 수거된 폐 흑연을 소결, 분쇄, 건조, 성형 등의 공정을 이용하여 흑연부품, 단열재 등으로 제조하여 재사용할 수 있도록 한 폐 그래파이트 재활용방법을 제공하는 데 목적이 있다.
The object of the present invention is to provide a waste graphite recycling method in which waste graphite collected after collecting waste graphite can be made into graphite parts, insulation materials, and reused by sintering, grinding, drying, molding, have.
상기와 같은 목적을 달성하기 위한 본 발명은 다음과 같은 구성들을 통하여 여러 가지 실시 예를 구현할 수 있게 된다.In order to accomplish the above object, the present invention can implement various embodiments through the following arrangements.
본 발명인 폐 그래파이트(graphite, 흑연) 재활용방법은 The recycling method of waste graphite (graphite)
도가니 표면에서 실리콘카바이드(SiC)를 분리하기 위한 실리콘카바이드(SiC) 분리단계; A silicon carbide (SiC) separation step for separating silicon carbide (SiC) from the surface of the crucible;
분리된 폐 흑연을 분쇄 및 건조하는 분쇄건조단계; A pulverizing and drying step of pulverizing and drying the separated waste graphite;
분쇄 및 건조된 폐 흑연을 프레스 성형하여 블록으로 제조하는 블록제조단계; 및 블록을 제품으로 만드는 제품가공단계;를 포함하는 것을 특징으로 GKSE
A step of producing a block by press-molding pulverized and dried waste graphite into blocks; And a product processing step of making the block product,
그리고 본 발명인 폐 그래파이트(graphite, 흑연) 재활용방법의 실리콘카바이드(SiC) 분리단계는 수집한 폐 도가니를 소결기를 이용하여 1800℃에서 소결하여 도가니의 표면에 코팅된 실리콘카바이드(SiC)를 녹여 증발시킨 후 황산을 이용하여 도가니의 표면에 남은 실리콘카바이드(SiC)를 부식시켜 제거하는 것을 특징으로 한다.
In the step of separating silicon carbide (SiC) from the waste graphite recycling method of the present invention, the collected crucible is sintered at 1800 ° C using a sintering machine to dissolve silicon carbide (SiC) coated on the surface of the crucible and evaporate And the silicon carbide (SiC) remaining on the surface of the crucible is corroded and removed by using sulfuric acid.
그리고 본 발명인 폐 그래파이트(graphite, 흑연) 재활용방법의 분쇄건조단계는 표면에 코팅된 실리콘카바이드(SiC)을 분리한 폐 흑연을 분쇄기를 이용하여 분쇄하는 것으로, 10㎛로 분쇄한 후 분무건조(spray drying , 噴霧乾燥) 하는 것을 특징으로 한다.
In the pulverization and drying step of the graphite recycling method of the present invention, the waste graphite obtained by separating the silicon carbide (SiC) coated on the surface is pulverized by a pulverizer to pulverize the pulverized pulverizer to 10 μm, drying, spray-drying).
그리고 본 발명인 폐 그래파이트(graphite, 흑연) 재활용방법의 블록화단계는 분쇄 및 건조된 폐 흑연을 블록화하는 단계로 소결단계와 소결된 블록을 고순화하기 위한 고순화단계와, 프레스 성형단계로 이루어진 것을 특징으로 한다.
The blocking step of the graphite recycling method of the present invention is a step of blocking pulverized and dried waste graphite, and comprises a sintering step, a high-purification step for sintering the sintered block, and a press molding step .
그리고 본 발명인 폐 그래파이트(graphite, 흑연) 재활용방법의 블록화단계의 소결단계는 소결기를 이용하여 1200 ~ 1400℃로 가열하여 소결하는 단계;The sintering step in the blocking step of the recycling method of waste graphite according to the present invention comprises heating and sintering at 1200 to 1400 ° C using a sintering machine;
고순화단계는 소결 후 다시 2200℃로 가열하여 불순물을 제거하는 단계; 및The sintering step may be followed by heating to 2200 ° C to remove impurities; And
프레스 성형단계는 고순화 과정이 끝난 폐 흑연을 성형프레스에서 100 ~ 120MPa로 압축하여 블록으로 만드는 단계인 것을 특징으로 한다.
The press molding step is a step of compressing the waste graphite which has undergone the high-purification process in a molding press to 100 to 120 MPa to form a block.
본 발명은 앞서 본 구성에 의하여 다음과 같은 효과를 갖는다.The present invention has the following effects with the above-described configuration.
본 발명 폐 그래파이트(graphite, 흑연) 재활용방법은 폐 흑연을 수거한 후 수거된 폐 흑연을 소결, 분쇄, 건조, 성형 등의 공정을 이용하여 흑연부품, 단열재 등으로 제조하여 재사용함으로써 낭비되는 자원을 절감할 수 있는 효과가 있다.
The method of recycling waste graphite according to the present invention is a method for recycling spent graphite after collecting waste graphite by using sintering, crushing, drying, molding, etc. and collecting and reusing waste graphite as a graphite part, There is an effect that can be saved.
도 1은 본 발명에 따른 폐 그래파이트 재활용과정을 나타낸 블록도이다.FIG. 1 is a block diagram illustrating a waste graphite recycling process according to the present invention.
이하에서 첨부도면을 참조하여 본 발명에 대한 구성의 결합 및 작용관계를 상세하게 설명한다.BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.
본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 기술은 생략한다.Detailed descriptions of well-known functions and constructions that may be unnecessarily obscured by the gist of the present invention will be omitted.
본 발명은 도가니 표면에서 실리콘카바이드(SiC)를 분리하기 위한 실리콘카바이드(SiC) 분리단계(S100); 분리된 폐 흑연을 분쇄 및 건조하는 분쇄건조단계(S300); 분쇄 및 건조된 폐 흑연을 블록화하는 블록화단계(S500); 및 블록을 NC가공하여 제품으로 만드는 제품가공단계(S700);를 포함한다.
The present invention relates to a silicon carbide (SiC) separation step (S100) for separating silicon carbide (SiC) from a crucible surface; A pulverizing and drying step (S300) of pulverizing and drying the separated waste graphite; Blocking step S500 of blocking pulverized and dried waste graphite (S500); And a product processing step (S700) in which the block is NC machined into a product.
실리콘카바이드(SiC) 분리단계는 수집한 폐 도가니를 소결기를 이용하여 1800℃에서 소결하여 도가니의 표면에 코팅된 실리콘카바이드(SiC)를 녹여 증발시킨다.In the silicon carbide (SiC) separation step, the collected crucible is sintered at 1800 ° C using a sintering machine to melt silicon carbide (SiC) coated on the surface of the crucible and evaporate.
이후 황산을 이용하여 도가니의 표면에 남은 실리콘카바이드(SiC)를 부식시켜 제거한다.
Thereafter, silicon carbide (SiC) remaining on the surface of the crucible is etched away by using sulfuric acid.
분쇄건조단계는 표면에 코팅된 실리콘카바이드(SiC)을 분리한 폐 흑연을 분쇄기를 이용하여 분쇄하는 것으로, 10㎛로 분쇄한 후 분무건조(spray drying , 噴霧乾燥) 한다.
In the pulverization and drying step, the waste graphite obtained by separating the silicon carbide (SiC) coated on the surface is pulverized by a pulverizer, pulverized to 10 μm, and spray dried.
블록화단계는 분쇄 및 건조된 폐 흑연을 블록화하는 단계로 소결단계(S510)와 소결된 블록을 고순화하기 위한 고순화단계(S530)와, 프레스 성형단계(S550)로 이루어진다.The blocking step is a step of blocking the pulverized and dried waste graphite, and comprises a sintering step (S510), a high-refining step (S530) for high-sintering the sintered block, and a press forming step (S550).
소결단계는 소결기를 이용하여 1200 ~ 1400℃로 가열하여 소결하는 단계이다.The sintering step is a step of sintering by heating to 1200 to 1400 ° C using a sintering machine.
고순화단계는 소결 후 다시 2200℃로 가열하여 불순물을 제거하는 단계이다.The high-refining step is a step of removing impurities by heating to 2200 ° C again after sintering.
프레스 성형단계는 고순화 과정이 끝난 폐 흑연을 성형프레스에서 100 ~ 120MPa로 압축하여 블록으로 만든다.
In the press forming step, the waste graphite which has undergone the high-purification process is compressed into a block at 100-120 MPa in a molding press.
제품가공단계는 만들어진 블록을 NC가공기를 이용하여 자동차 부품 등과 같은 흑연제품을 만드는 단계이다.
The product processing step is to make graphite products such as automobile parts by using the NC block in the block.
이상에서 설명한 본 발명은 전술한 실시 예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경할 수 있다는 것이 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Will be clear to those who have knowledge of.
Claims (5)
분리된 폐 흑연을 분쇄 및 건조하는 분쇄건조단계;
분쇄 및 건조된 폐 흑연을 블록화하는 블록화단계; 및 블록을 제품으로 만드는 제품가공단계;를 포함하는 것을 특징으로 하는 폐 그래파이트(graphite, 흑연) 재활용방법.A silicon carbide (SiC) separation step for separating silicon carbide (SiC) from the surface of the crucible;
A pulverizing and drying step of pulverizing and drying the separated waste graphite;
A blocking step of blocking pulverized and dried waste graphite; And a product processing step of converting the block into a product.
수집한 폐 도가니를 소결기를 이용하여 1800℃에서 소결하여 도가니의 표면에 코팅된 실리콘카바이드(SiC)를 녹여 증발시킨 후 황산을 이용하여 도가니의 표면에 남은 실리콘카바이드(SiC)를 부식시켜 제거하는 것을 특징으로 하는 폐 그래파이트(graphite, 흑연) 재활용방법.2. The method of claim 1, wherein the silicon carbide (SiC)
The collected crucible was sintered at 1800 ° C using a sintering machine to dissolve and evaporate silicon carbide (SiC) coated on the surface of the crucible, and then the silicon carbide (SiC) remaining on the surface of the crucible was removed by corrosion using sulfuric acid A method of recycling waste graphite (graphite).
분쇄 및 건조된 폐 흑연을 블록화하는 단계로 소결단계와 소결된 블록을 고순화하기 위한 고순화단계와, 프레스 성형단계로 이루어진 것을 특징으로 하는 폐 그래파이트(graphite, 흑연) 재활용방법.2. The method of claim 1, wherein the blocking step
A step of sintering the pulverized and dried waste graphite, a sintering step, a high-purity step of sintering the sintered block, and a press molding step, wherein the graphite is recycled.
소결단계는 소결기를 이용하여 1200 ~ 1400℃로 가열하여 소결하는 단계;
고순화단계는 소결 후 다시 2200℃로 가열하여 불순물을 제거하는 단계; 및
프레스 성형단계는 고순화 과정이 끝난 폐 흑연을 성형프레스에서 100 ~ 120MPa로 압축하여 블록으로 만드는 단계인 것을 특징으로 하는 폐 그래파이트(graphite, 흑연) 재활용방법.5. The method of claim 4,
Sintering is performed by heating at 1200 to 1400 ° C using a sintering machine;
The sintering step may be followed by heating to 2200 ° C to remove impurities; And
Wherein the step of press forming is a step of compressing the waste graphite which has undergone the purification process to a pressure of 100 to 120 MPa in a molding press to form a block.
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| WO2018088636A1 (en) * | 2016-11-11 | 2018-05-17 | 주식회사 카보랩 | Method for recycling waste graphite powder and graphite powder manufactured by the same |
| KR20180083155A (en) * | 2017-01-12 | 2018-07-20 | 한국해양대학교 산학협력단 | Method for manufacturing artificial graphite from waste containing carbonaceous material |
| KR101897980B1 (en) * | 2017-03-20 | 2018-09-13 | (주)아이투스 인터내셔날 | Method for recycling wasted graphite and floor structure for heat using the same |
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| WO2018088636A1 (en) * | 2016-11-11 | 2018-05-17 | 주식회사 카보랩 | Method for recycling waste graphite powder and graphite powder manufactured by the same |
| KR20180083155A (en) * | 2017-01-12 | 2018-07-20 | 한국해양대학교 산학협력단 | Method for manufacturing artificial graphite from waste containing carbonaceous material |
| KR101897980B1 (en) * | 2017-03-20 | 2018-09-13 | (주)아이투스 인터내셔날 | Method for recycling wasted graphite and floor structure for heat using the same |
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