KR20130031426A - Recycling method of tailings - Google Patents
Recycling method of tailings Download PDFInfo
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- KR20130031426A KR20130031426A KR20110094983A KR20110094983A KR20130031426A KR 20130031426 A KR20130031426 A KR 20130031426A KR 20110094983 A KR20110094983 A KR 20110094983A KR 20110094983 A KR20110094983 A KR 20110094983A KR 20130031426 A KR20130031426 A KR 20130031426A
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- Prior art keywords
- tailings
- slag
- source material
- red mud
- mat
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004064 recycling Methods 0.000 title abstract description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 17
- 239000011707 mineral Substances 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 235000019738 Limestone Nutrition 0.000 claims abstract description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 12
- 239000006028 limestone Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 150000002739 metals Chemical class 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000002386 leaching Methods 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000010931 gold Substances 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
본 발명은 광미를 재활용하는 방법에 관한 것으로, 특히 광미와 다른 성분을 혼합하고 용융 제련을 통해 광미를 재활용하는 방법에 관한 것이다.The present invention relates to a method of recycling tailings, and more particularly, to a method of mixing tailings with other components and recycling tailings through smelting.
광미는 광석에서 필요한 성분을 골라내는 선광공정에서 발생되는 부산물을 말하며, 회수되는 유용광물에 비해 그 양이 매우 많다.The tailings are by-products from the beneficiation process to pick out the necessary components from the ore and are much higher than the useful minerals recovered.
현재 발생된 광미는 광산 근처의 야적장에 방치하고 있는데, 야적장 부지확보 문제 및 주변환경 오염 문제 등을 야기하고 있다. 광미를 매립하는 방법이 있으나 대량 매립 처분에 따른 비용이 많이 소요되고 환경 오염 문제는 여전히 발생하는 문제가 있다.The tailings generated at present are left in the yard near the mine, causing problems with the yard site and environmental pollution. There is a method of landfilling tailings, but there is a problem in that the cost of disposal of large landfills is high and environmental pollution still occurs.
최근에 광미를 산업원료로 이용하기 위한 시도가 있었지만 실질적인 활용도는 매우 낮은 실정이다. Recently, there have been attempts to use tailings as an industrial raw material, but the practical use is very low.
이러한 최근의 시도 중, 몰리브덴 선광장에서 발생되는 선광광미에 석회질, 알루미나질 및 철질원료를 혼합한 다음으로 분쇄하는 단계와, 건조 및 하소 단계, 1,300~1,500℃에서 30분 이상 반응시키는 단계 및 응결지연제를 첨가하여 파분쇄하는 단계를 포함하는 포틀랜드 시멘트 제조방법이 개시된 바 있다.During these recent attempts, a step of mixing lime, alumina and iron raw materials in the beneficiation tailings generated in the molybdenum mine, and then grinding, drying and calcining, reacting at 1,300-1,500 ° C. for at least 30 minutes and condensation A method for producing Portland cement has been disclosed that includes crushing by adding a retarder.
상기 선행기술은 광미, 석회질 및 알루미나질 및 철질원료를 사용하고 있어 본 발명의 대상 중 3성분에 대응한다고 볼 수 있다.The prior art uses tailings, calcareous and alumina and iron raw materials can be seen to correspond to the three components of the object of the present invention.
그러나, 선행기술은 포틀랜드 시멘트를 제조하는 것을 목적으로 하여 제조과정이 상이(본 발명의 용융제련 없으며, 매트와 슬래그의 개념 또한 없다)하고 최종제품(시멘트 vs PS ball)도 상이하다.However, the prior art has a different manufacturing process (no smelting of the present invention, no concept of matte and slag) and a final product (cement vs PS ball) for the purpose of producing portland cement.
본 발명의 목적은 광미를 재활용하는 방법을 제공하는 것이다.It is an object of the present invention to provide a method for recycling tailings.
본 발명의 목적은 광미 100중량부, 알루미나 및 산화철 소스 물질 50 내지 200중량부 및 탄산칼슘 소스 물질 50 내지 200중량부를 혼합하여 혼합물을 얻는 단계와; 상기 혼합물을 용융제련하여 슬래그를 얻는 단계와; 상기 슬래그를 이용하여 미네랄 볼을 제조하는 단계를 포함하는 것에 의해 달성된다.An object of the present invention is to obtain a mixture by mixing 100 parts by weight of tailings, 50 to 200 parts by weight of alumina and iron oxide source material and 50 to 200 parts by weight of calcium carbonate source material; Smelting the mixture to obtain slag; By using the slag to produce a mineral ball.
상기 알루미나 및 산화철 소스 물질은 레드머드를 포함할 수 있다.The alumina and iron oxide source material may comprise red mud.
상기 탄산칼슘 소스물질은 폐석회석을 포함할 수 있다.The calcium carbonate source material may comprise waste limestone.
상기 혼합물을 얻는 단계는, 펠렛타이징 단계 및 건조 단계를 포함할 수 있다.Obtaining the mixture may include a pelletizing step and a drying step.
상기 슬래그를 얻는 단계에서는 매트를 더 얻으며, 상기 매트로부터 유가금속을 회수하는 단계를 더 포함할 수 있다.The obtaining of the slag may further include obtaining a mat and recovering valuable metals from the mat.
상기 매트로부터 유가금속을 회수하는 단계는, 상기 매트를 산침출하고 용매추출하는 단계를 포함할 수 있다.Recovering the valuable metal from the mat may include acid leaching the solvent and extracting the solvent.
상기 미네랄 볼의 제조는 상기 슬래그를 용융하고 고압의 공기를 분사하여 미세액적으로 분리하고 분사공기로 금속냉각시켜 수행될 수 있다.The mineral ball may be prepared by melting the slag, injecting a high pressure air, separating the droplet into fine droplets, and cooling the metal with the injection air.
본 발명에 따르면, 광미를 재활용하는 방법이 제공된다.According to the present invention, a method for recycling tailings is provided.
도 1은 본 발명에 따른 방법을 나타낸 순서도이고,
도 2는 실험에 사용한 광미의 XRD결과이고,
도 3은 실험에 사용한 레드머드의 XRD결과이고,
도 4는 실험에 사용한 폐석회석의 XRD결과이고,
도 5는 3성분을 혼합하여 펠렛타이징한 것을 나타낸 그림이고,
도 6 및 도 7은 아크용융실험과정을 나타낸 그림이고,
도 8은 용융 후 매트를 나타낸 그림이고,
도 9는 용융 후 슬래그를 나타낸 그림이고,
도 10은 슬래그의 XRD 결과이고,
도 11은 미네랄 볼의 제조과정을 나타낸 그림이다.1 is a flow chart illustrating a method according to the invention,
2 is an XRD result of the tailings used in the experiment,
3 is an XRD result of the red mud used in the experiment,
4 is an XRD result of waste limestone used in the experiment,
5 is a view showing pelletized by mixing the three components,
6 and 7 are views showing the arc melting experiment process,
8 is a view showing a mat after melting,
9 shows the slag after melting,
10 is the XRD results of the slag,
11 is a view showing a manufacturing process of the mineral ball.
본 발명에서는 광미를 알루미나 및 산화철 소스 물질과 탄산칼슘 소스 물질과 함께 재활용한다.In the present invention, the tailings are recycled together with the alumina and iron oxide source material and the calcium carbonate source material.
광미로는 다양한 광산의 광미를 사용할 수 있으며, 특히 금광산의 광미를 사용할 수 있다.As the tailings, tailings of various mines can be used, in particular tailings of gold mines.
알루미나 및 산화철 소스 물질로는 레드머드를 사용할 수 있다. 레드머드는 Bayer process에 의해 보오크싸이트로부터 수산화알루미늄을 제조하는 과정에 발생한다. 레드머드는 알루미나 및 산화철이 주성분이며, 이 외에 실리카, 이산화티타늄 등을 더 포함할 수 있다. Red mud can be used as the alumina and iron oxide source material. Red mud is produced during the production of aluminum hydroxide from bauxite by the Bayer process. Red mud is mainly composed of alumina and iron oxide, and may further include silica, titanium dioxide, and the like.
레드머드는 국내에서 연간 30만톤 정도가 발생하며, 그 처리비용은 60억원이 소요되고 있다. 레드머드의 재활용 기술 개발은 함유되어 있는 희유금속 회수, 점토벽돌 제조, 도료의 안료, 필러, 촉매, 산업폐수 흡착제, 무기응집제 등 많은 분야에 연구가 진행되었다. 하지만 산업적으로 처리할 수 있는 방안이 제시되지 못하고 대부분 해양투기나 매립을 통하여 처리하고 있다. 그런데 런던협약에 의한 2015년부터 해양투기 금지됨에 따라 레드머드를 재활용할 수 있는 기술개발이 필요하다.Red mud takes about 300,000 tons annually in Korea, and the processing cost is 6 billion won. The development of red mud recycling technology has been conducted in many fields such as recovery of rare metals, clay bricks, pigments, fillers, catalysts, industrial wastewater adsorbents and inorganic coagulants. However, industrial treatment is not suggested, and most of it is handled through ocean dumping or landfill. However, since dumping of ocean dumping has been banned since 2015 under the London Convention, technology development to recycle red mud is needed.
탄산칼슘 소스로는 폐석회석을 사용할 수 있다. 채굴되는 석회석 중 점판암이나 백운석과 같은 광물이 혼합돼 탄산칼슘의 순도가 떨어질 경우 폐석회석으로 분류된다. 현재 폐석회석은 대부분 폐기된다. 폐석회석의 성분은 대부분이 탄산칼슘이며, 이 외에 실리카와 산화철을 포함한다. Waste calcium lime may be used as the calcium carbonate source. Among the limestones that are mined, minerals such as slate rock or dolomite are mixed and the calcium carbonate is reduced in purity. Waste limestone is now mostly discarded. The components of the waste limestone are mostly calcium carbonate, and include silica and iron oxide.
도 1을 참조하여 본 발명에 따른 광미의 재활용방법을 설명한다. 이하의 설명에서는 알루미나 및 산화철 소스 물질로는 레드머드를 사용하고 탄산칼슘 소스 물질로는 폐석회석을 사용하는 것으로 한다.Referring to Figure 1 will be described a recycling method of the tailings according to the present invention. In the following description, red mud is used as the alumina and iron oxide source material, and waste limestone is used as the calcium carbonate source material.
먼저 3성분을 준비하는데(S100), 혼합비는 광미 100중량부에 대하여 레드머드 50 내지 200중량부 및 폐석회석 50 내지 200중량부를 사용할 수 있다. 이상의 성분비는 각 성분의 수분함량을 제외한 것이다. 광미는 약 10%의 수분을 함유하고 레드머드는 약 35%의 수분을 함유하고 있다. First to prepare the three components (S100), the mixing ratio may be used 50 to 200 parts by weight of red mud and 50 to 200 parts by weight of waste lime with respect to 100 parts by weight of tailings. The above component ratio excludes the water content of each component. The tailings contain about 10% moisture and the red mud contains about 35% moisture.
이후 3성분을 혼합하는데 이 과정에서는 펠렛타이징(S200)과 건조과정(S300)을 거칠 수 있다. 펠렛타이징에서는 광미-레드머드-폐석회석을 섞어서 구형형태로 만들며, 건조는 약 90℃에서 120℃에서 30시간 내지 60시간 동안 수행될 수 있다. After the three components are mixed in this process may be subjected to pelletizing (S200) and drying process (S300). In pelletizing, the tailings-red mud-waste limestone are mixed into a spherical form, and drying may be performed at about 90 ° C. at 120 ° C. for 30 to 60 hours.
다음으로 용융제련(S400)을 하게 된다. 용융은 대상 물질을 용광로 또는 도가니 안에서 녹이는 것으로, 용융을 쉽게 하기 위해 용제, 환원제 및 공기 등을 공급할 수 있다. Next, the smelting (S400). Melting is melting a target material in a furnace or crucible, and may supply a solvent, a reducing agent, and air to facilitate melting.
용융제련에 의해 3성분 물질은 매트(S500)와 슬래그(S600)로 분리된다. 용융과정에서 슬래그와 매트는 비중차이로 분리되며 금속성분은 하부에 위치하는 매트에 주로 포함된다. By smelting the three-component material is separated into a mat (S500) and slag (S600). In the melting process, slag and mat are separated by specific gravity difference, and metal is mainly included in the mat located at the bottom.
매트에는 광미나 레드머드에 남아 있는 유가금속이 상대적으로 많이 존재하며, 적절한 방법을 통해 유가금속을 회수할 수 있다(S510). 매트에 있는 유가금속은 산침출 및 용매추출을 통해 회수할 수 있다. In the mat, there are relatively many valuable metals remaining in the mineral or red mud, and the valuable metals can be recovered through an appropriate method (S510). Valuable metals in the mat can be recovered by acid leaching and solvent extraction.
슬래그는 아토마이징과 같은 추가 공정을 거쳐 미네랄 볼로 제조한다(S610). 미네랄 볼은 연마재, 폐수정화제, 차음재, 방사능 차폐제, 골재 등으로 사용될 수 있다. 미네랄 볼은 용융상태의 슬래그에 고압의 공기를 분사하여 미세액적으로 분리하고 분사공기로 금속냉각시켜 제조할 수 있다.Slag is manufactured as a mineral ball through an additional process such as atomizing (S610). Mineral balls may be used as abrasives, waste water correction agents, sound insulation materials, radioactive shielding agents, aggregates and the like. Mineral balls may be prepared by injecting high pressure air into molten slag to separate them into fine droplets and cooling the metal with the sprayed air.
이상 설명한 본 발명에 따르면 처리에 어려움이 있었던 광미를 재활용하는 방법이 제공된다. 특히 레드머드를 사용할 경우 해양투기 금지에 따른 레드머드의 처리문제도 함께 해결된다. 특히 광미, 레드머드 및 폐석회석은 인근 지역에서 발생할 가능성이 높아 물류비를 크게 감소시킬 수 있다.According to the present invention described above, a method of recycling the tailings, which has been difficult to process, is provided. In particular, if red mud is used, the problem of disposal of red mud due to the prohibition of ocean dumping is solved. In particular, tailings, red mud and waste limestone are more likely to occur in nearby areas and can significantly reduce logistics costs.
또한 기존에는 저가 건설자재로 사용되던 슬래그를 부가가치가 높은 미네랄 볼로 재활용하여 경제성이 향상된다.
In addition, the slag, which was previously used as a low-cost construction material, is recycled into high value-added mineral balls, thereby improving economic efficiency.
<실험예><Experimental Example>
실험에 사용한 광미는 금광산인 순신광산에서 발생한 광미를 사용하였다. 광미의 주요 구성성분은 표 1 및 표 2와 같으며, XRD 결과는 도 2와 같다.
The tailings used in the experiment were tailings generated from the gold mine, Sunshin mine. The main components of the tailings are shown in Table 1 and Table 2, the XRD results are shown in FIG.
알루미나 및 산화철 소스 물질로는 알루미늄 공장에서 발생한 레드머드를 사용하였다. 레드머드의 주요 구성성분 및 주요물성은 <표 3>과 같다. 레드머드의 XRD결과는 도 3과 같다.
Red mud from the aluminum plant was used as the alumina and iron oxide source material. The main components and physical properties of red mud are shown in <Table 3>. XRD results of the red mud are shown in FIG. 3.
탄산칼슘 소스로는 폐석회석을 사용하였다. 페석회석의 XRD결과는 도 4와 같다. Waste limestone was used as the calcium carbonate source. XRD results of calcite lime are shown in FIG.
이상 사용한 순신광산의 광미, 레드머드 및 폐석회석은 모두 인접한 지역에서 발생하여 물류비용이 크게 절감되는 효과가 있다.The tailings, red mud and waste limestone of the pure new mine used above are all generated in the adjacent area, which greatly reduces the logistics cost.
광미, 레드머드 및 폐석회석을 26:38:36의 배합비로 조절하였다. 광미에는 수분이 11.4%가 함유되어 있으며 레드머드에는 수분이 34.3% 함유되어 있으며, 배합비는 수분함량을 제외한 것이다. The tailings, red mud and waste limestone were adjusted to a ratio of 26:38:36. The tailings contain 11.4% moisture, and the red mud contains 34.3% moisture, and the mixing ratio excludes water content.
도 5와 같이 3성분의 시료를 혼합(펠렛타이징)하였으며 오븐에서 건조시켰다. 이후 용융을 위해 도가니 바닥면에 2.5kg의 철을 넣고 흑연 전극봉과 접촉시켜 아크를 발생시켰다. 도 6 및 도 7은 전극봉 주위부터 용융이 시작되어 도가니 전체로 용융이 되는 모습을 나타낸 것이다. Samples of three components were mixed (pelletized) and dried in an oven as shown in FIG. 5. Thereafter, 2.5 kg of iron was placed in the bottom of the crucible for melting, and the contact with the graphite electrode rod generated an arc. 6 and 7 show a state in which melting is started around the electrode rod to melt the entire crucible.
이후 도 8 및 도 9와 같이 매트와 슬래그로 분리하였다. 매트에는 유가금속이 상대적으로 많이 함유되어 있다. 도 10은 슬래그의 XRD결과이다. 매트로부터는 산침출과 용매추출을 거쳐 유가금속을 회수하였다.After that, separated into a mat and slag as shown in Figure 8 and 9. The mat contains a relatively high amount of valuable metals. 10 is an XRD result of slag. From the mat, valuable metals were recovered through acid leaching and solvent extraction.
슬래그에 대해서는 아토마이징을 거쳐 미네랄 볼로 제조하였으며, 도 11은 미네랄 볼의 제조과정을 나타낸 것이다.The slag was made of mineral balls through atomization, and FIG. 11 shows a process of preparing the mineral balls.
이상으로 본 발명 내용의 특정한 부분을 상세히 기술하였는 바, 당업계의 통상의 지식을 가진 자에게 있어서, 이러한 구체적 기술은 단지 바람직한 실시양태일 뿐이며, 이에 의해 본 발명의 범위가 제한되는 것이 아닌 점은 명백할 것이다. 따라서, 본 발명의 실질적인 범위는 첨부된 청구항들과 그것들의 등가물에 의하여 정의된다고 할 것이다.While the present invention has been particularly shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that such specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereby. something to do. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.
Claims (7)
상기 혼합물을 용융제련하여 슬래그를 얻는 단계와;
상기 슬래그를 이용하여 미네랄 볼을 제조하는 단계를 포함하는 광미를 이용한 미네랄 볼 생산 방법.Mixing 100 parts by weight of tailings, 50 to 200 parts by weight of alumina and iron oxide source material and 50 to 200 parts by weight of calcium carbonate source material to obtain a mixture;
Smelting the mixture to obtain slag;
Mineral ball production method using the tailings comprising the step of producing a mineral ball using the slag.
상기 알루미나 및 산화철 소스 물질은 레드머드를 포함하는 것을 특징으로 하는 방법. The method of claim 1,
Wherein said alumina and iron oxide source material comprises red mud.
상기 탄산칼슘 소스물질은 폐석회석을 포함하는 것을 특징으로 하는 방법. The method of claim 1,
And the calcium carbonate source material comprises waste limestone.
상기 혼합물을 얻는 단계는,
펠렛타이징 단계 및 건조 단계를 포함하는 것을 특징으로 하는 방법. The method of claim 1,
The step of obtaining the mixture comprises:
A pelletizing step and a drying step.
상기 슬래그를 얻는 단계에서는 매트를 더 얻으며,
상기 매트로부터 유가금속을 회수하는 단계를 더 포함하는 것을 특징으로 하는 방법. The method of claim 1,
In the step of obtaining the slag to obtain more mat,
Recovering valuable metals from the mat.
상기 매트로부터 유가금속을 회수하는 단계는,
상기 매트를 산침출하고 용매추출하는 단계를 포함하는 것을 특징으로 하는 방법. The method of claim 5,
Recovering the valuable metal from the mat,
Acid leaching the solvent and extracting the solvent.
상기 미네랄 볼의 제조는 상기 슬래그를 용융하고 고압의 공기를 분사하여 미세액적으로 분리하고 분사공기로 금속냉각시켜 수행되는 것을 특징으로 방법.The method of claim 1,
The mineral ball is manufactured by melting the slag, injecting a high pressure air, separating the droplets into fine droplets, and cooling the metal with injection air.
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| KR101658887B1 (en) | 2015-09-01 | 2016-09-22 | 한국지질자원연구원 | Method of preparing light weight aggregate using gold mine tail |
| KR101889355B1 (en) * | 2018-02-13 | 2018-08-17 | 한국지질자원연구원 | Manufacturing method of porous ceramics from red mud and tailing |
| KR102233141B1 (en) * | 2019-12-23 | 2021-03-29 | 한양대학교 에리카산학협력단 | Calcium-aluminate flux using industrial by-products and manufacturing method for the same, desulfurization method of molten steel using the same |
| CN116103511A (en) * | 2022-12-29 | 2023-05-12 | 东北大学 | Method for smelting and recycling ferronickel by using alumina carrier waste lithiation catalyst and red mud |
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| KR101655830B1 (en) | 2015-12-31 | 2016-09-21 | 주식회사 에스제이광물 | Apparatus for recycling mineral waste materials without piling |
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| KR100523846B1 (en) * | 2003-07-14 | 2005-10-26 | 한국지질자원연구원 | Leaching method of Valuable metals from Matte produced Deep ocean Manganese Nodules |
| KR20090023376A (en) * | 2008-12-10 | 2009-03-04 | 주식회사 에코마이스터 | A method for stabilizing slag and novel materials produced thereby |
| GB2454231B (en) * | 2007-11-01 | 2012-10-03 | Advanced Mineral Recovery Technologies Ltd | Method of and system for processing red mud |
| KR101111277B1 (en) * | 2009-11-13 | 2012-03-13 | 한국지질자원연구원 | Method for manufacturing portland cement using tailing of mineral dressing and portland cement manufactured with this |
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| KR101658887B1 (en) | 2015-09-01 | 2016-09-22 | 한국지질자원연구원 | Method of preparing light weight aggregate using gold mine tail |
| KR101889355B1 (en) * | 2018-02-13 | 2018-08-17 | 한국지질자원연구원 | Manufacturing method of porous ceramics from red mud and tailing |
| KR102233141B1 (en) * | 2019-12-23 | 2021-03-29 | 한양대학교 에리카산학협력단 | Calcium-aluminate flux using industrial by-products and manufacturing method for the same, desulfurization method of molten steel using the same |
| WO2021132891A1 (en) * | 2019-12-23 | 2021-07-01 | 한양대학교 에리카산학협력단 | Calcium-aluminate-based flux utilizing industrial byproduct, method for manufacturing same, and method for desulfurizing molten steel by using same |
| CN116103511A (en) * | 2022-12-29 | 2023-05-12 | 东北大学 | Method for smelting and recycling ferronickel by using alumina carrier waste lithiation catalyst and red mud |
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