KR910001010B1 - Method for recovering zinc from substances containing a zinc conpound - Google Patents
Method for recovering zinc from substances containing a zinc conpound Download PDFInfo
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- KR910001010B1 KR910001010B1 KR1019850000481A KR850000481A KR910001010B1 KR 910001010 B1 KR910001010 B1 KR 910001010B1 KR 1019850000481 A KR1019850000481 A KR 1019850000481A KR 850000481 A KR850000481 A KR 850000481A KR 910001010 B1 KR910001010 B1 KR 910001010B1
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- 239000011701 zinc Substances 0.000 title claims description 49
- 229910052725 zinc Inorganic materials 0.000 title claims description 49
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 43
- 238000000034 method Methods 0.000 title claims description 25
- 239000000126 substance Substances 0.000 title claims 3
- 238000005245 sintering Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 150000003752 zinc compounds Chemical class 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004484 Briquette Substances 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 229940043430 calcium compound Drugs 0.000 claims description 3
- 150000001674 calcium compounds Chemical class 0.000 claims description 3
- 239000003575 carbonaceous material Substances 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 239000012808 vapor phase Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000001465 metallisation Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 39
- 239000002994 raw material Substances 0.000 description 14
- 239000008188 pellet Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- BPKGOZPBGXJDEP-UHFFFAOYSA-N [C].[Zn] Chemical compound [C].[Zn] BPKGOZPBGXJDEP-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/34—Obtaining zinc oxide
-
- 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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 발명의 한 실시예를 도시하는 개략도.1 is a schematic diagram illustrating one embodiment of the present invention.
제2도는 실험에 사용한 소형 소결실험장치의 개략도.2 is a schematic diagram of a small sintering experiment apparatus used in the experiment.
제3도는 함탄, 함아연 펠리트를 석회석에 의해서 피복한 경우의 탈아연율에의 영향을 나타내는 그래프.3 is a graph showing the effect on de-zincification rate when carbon-containing and zinc-containing pellets are coated with limestone.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
A : 혼련·단광(團鑛)공정 B : 탈아연공정A: Kneading and briquetting step B: Dezincing step
1 : 혼련기 2 : 단광기1 kneader 2 briquette
3 : 단광기 4a, 4b, 4c : 소결원료호퍼3: briquette 4a, 4b, 4c: sintered raw material hopper
5 : 소결원료 6 : 노상층5: sintered raw material 6: hearth layer
7 : 함아연분진단광물 8 : 소결광7: dust-containing zinc dust mineral 8: sintered ore
9 : 장입공기 10 : 바람상자9: charged air 10: wind box
11 : 집진기 12 : 집진기11: dust collector 12: dust collector
13 : 집진기 14 : 블로워13: dust collector 14: blower
15 : 연통 16 : 점화로15: Communication 16: Ignition furnace
본 발명은 금속정련원료의 전처리 공정 또는 금속정련 공정에서 발생하는 분진(dust)등의 아연화합물을 함유하는 물질로부터 아연을 회수하는 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering zinc from a material containing zinc compounds such as dust generated in the pretreatment process of metal refining raw materials or metal refining processes.
예를들면, 제철소에서 발생하는 각종 분진은 자원의 효과적 이용 및 환경대책의 견지에서 회수 재이용되고 있으나, 이 경우 아연화합물이 최대의 문제가 된다. 아연 농도가 낮은 분진은 직접소결기, 전로(電爐), 전기로 등에 공급되는 경우도 있으나, 아연농도가 높은 고로분진 등을 제철원료로서 재이용하기 위해서는 전처리로서 탈아연 처리를 실시할 필요가 있다. 현재 탈아연의 처리법으로 습식사이클론에 의한 분금 분리, 로타리킬른(rotary kiln)법에 의한 환원증발이 대표적인 것이다.For example, various dusts generated in steel mills are recovered and reused in view of the effective use of resources and environmental measures. In this case, zinc compounds are the biggest problem. Dust having a low zinc concentration may be supplied to a direct sintering machine, a converter, an electric furnace, or the like. However, in order to reuse blast furnace dust having a high zinc concentration as a steelmaking raw material, it is necessary to perform de-zinc treatment as a pretreatment. Currently, the treatment of de-zinc is carried out by separation of liquid by wet cyclone and reduction of evaporation by rotary kiln method.
전자의 습식 사이클론은 아연이 세립측으로 농축하는 성질을 이용한 것으로 이 방법에 의한 제거율(탈아연율)은 60-80%정도이다. 후자의 로타리킬른법은 금속아연의 비점이 약 910℃인 것을 이용한 것을 분진중의 아연은 주로 하기의 반응에 의하여 제거된다.The former wet cyclone uses the property of zinc to concentrate to the fine grain side, and the removal rate (de-zinc rate) by this method is about 60-80%. The latter rotary kiln method uses a metal zinc having a boiling point of about 910 ° C. Zinc in dust is mainly removed by the following reaction.
로타리킬른법에 의한 아연의 제거율은 80-95%이다.The removal rate of zinc by the rotary kiln method is 80-95%.
습식사이클론법은 로타리킬른법에 비해 처리비용은 낮으나 아연제거율이 낮은 결점이 있다. 한편 로타리킬른법은 아연제거율은 높으나 처리비용이 높고 함철분진이 환원 펠리트가 되는 이익을 계산에 넣어도 채산이 안맞는다.The wet cyclone method has a lower treatment cost than the rotary kiln method, but has a lower zinc removal rate. The Rotary Kiln method, on the other hand, has a high zinc removal rate but a high treatment cost, and it is not profitable even if the profits of iron-containing dust are reduced pellets are calculated.
이와 같은 이유에서, 제철자원으로서의 가치평가는 낮고, 자원의 효과적 이용의 견지에서 보다는 환경대책상의 처리를 하고 있는 것이 현실이다.For this reason, it is a reality that the valuation as a steel resource is low and the environmental measures are dealt with rather than in terms of the effective use of the resource.
본 발명은 이와 같은 제문제를 해결하고 값싼 분진처리법(아연제거법)에 따르는 분진의 효율적 이용 및 환경대책을 겸한 아연회수방법을 제공하는 것을 목적으로 하는 것으로, 본 발명의 실시에 의하여 분진으로부터 제거된 아연을 아연화합물로서 고농도로 포집하여 후공정의 금속 아연 정련에 부가가치가 높은 원료로서 공급하는 것을 가능케하는 것이다. 또한, 본 발명에서의 제철소에서 발생하는 분진의 탈아연 뿐만 아니라 금속 정련원료 또는 금속정련공정에서 발생하는 분진을 탈아연 처리하여 아연을 회수하기에 바람직한 아연회수방법을 제공하는 것을 목적으로 한다.The present invention aims to solve such problems and to provide a zinc recovery method that combines efficient use of dust and environmental measures according to a cheap dust treatment method (zinc removal method), which is removed from dust by the practice of the present invention. It is possible to collect zinc at high concentration as a zinc compound and to supply it as a high value-added raw material to the metal zinc refining of the post-process. Another object of the present invention is to provide a zinc recovery method for recovering zinc by de-zinc treatment of dust generated in a metal refining raw material or a metal refining process as well as dust de-zinc generated in a steel mill.
상기 목적을 달성하기 위하여 본 발명은 아연화합물을 함유하는 물질에 필요하다면 탄소질물질을 혼합시켜 단광한 후 거기다 칼슘화합물등의 피복제로 피복한 후 그 물질을 소결장치내에 공급하여 소결온도 대역에서 극부적으로 강환원 분위기를 생성하므로서 그 물질속의 아연화합물을 금속화 증발분리시킨 후, 그 강산화성 분위기의 원(源)에서 증기상 아연의 산화에 의하여 아연산화물을 생성하여 그 상태에서 소결장치로부터 배출하는 것을 특징으로 한다.In order to achieve the above object, the present invention mixes and deposits carbonaceous material, if necessary, to a material containing zinc compound, coats it with a coating material such as calcium compound, and then supplies the material into the sintering apparatus to supply the material at the sintering temperature range. The metal compound is evaporated and separated from the zinc compound in the material by negatively generating a strong reducing atmosphere, and then zinc oxide is generated by oxidation of vapor phase zinc in the source of the strongly oxidizing atmosphere and discharged from the sintering apparatus in that state. Characterized in that.
이하, 본 발명을 한 실시예에 따라 설명한다.Hereinafter, the present invention will be described according to one embodiment.
본 실시예에 있어서는 아연화합물을 함유하는 물질로서 제철소에서 배출되며 28 내지 32중량%의 ToFe와, 15 내지 2.5중량%의 Zo과 30 내지 35중량%의 C로 이루어진 분진을 선택하여 소결장치로서 통상의 DL형 소결기를 이용하고 있다.In this embodiment, a material containing zinc compounds is discharged from a steel mill, and a dust composed of 28 to 32% by weight of ToFe, 15 to 2.5% by weight of Zo and 30 to 35% by weight of C is selected. DL type sintering machine is used.
제1도에 있어서, A는 분진의 혼련, 단광공정을 도시하고 B는 DL형 소결기에 의한 소결 및 분진의 탈아연 공정을 도시한다. 함아연 분진원료는 혼련기(1)에 이송되어 필요에 따라 코크스등의 탄소질환원제, 철광석등의 저아연 함철물질이 첨가되고 함탄소농도, 함연농도의 조정을 실시한다. 탄소아연농도를 조정한 분진은 단광기(2)로 이송되어 단광이 실시된다. 또한, 단광물질은 단광기(3)로 이송되어 칼슘화합물 등의 피복제로 피복된다.In FIG. 1, A shows the kneading and briquetting process of dust, and B shows the sintering and dezincing process of dust by DL type sintering machine. The zinc-containing dust raw material is transferred to the kneader (1) and carbonaceous reducing agents such as coke and low-zinc iron-containing materials such as iron ore are added as necessary, and the carbon-containing concentration and the content of the lead-containing concentration are adjusted. The dust whose carbon zinc concentration is adjusted is transferred to the decanter 2, and briquettes are performed. In addition, the briquette material is transferred to the briquette 3 and coated with a coating material such as a calcium compound.
상기 피복제는 후단의 탈아연공정에서 아연함유분진을 강산화 성분위기로부터 차단하기 위한 것이고, 당연히 아연함유량이 영이 되거나 극소량일 필요가 있으며, 예를 들면 53 내지 55중량%의 CaO와 42내지 44중량%의 강열감량(Ignition Loss)으로 이루어진 석회석 또는 34 내지 38중량%의 CaO와 12내지 16중량%의 MgO및 42 내지 48중량%의 강열감량으로 이루어진 돌로마이트가 바람직하다. 계속 단광물은 소결기로 이송되어 제1도의 도시와 같이 우선 그레이트 바아(grate bar)보호를 위하여 호퍼(4a)로부터 노상층(hearth layer)을 장입한다. 따라서 단광물(7)은 소결원료(5)와 노상층(6)사이에 층상으로 장입되게 된다.The coating agent is for blocking zinc-containing dust from the strong oxidation component crisis in the subsequent de-zincification process, and of course, the zinc content needs to be zero or very small, for example, 53 to 55% by weight of CaO and 42 to 44 Preferred is limestone consisting of weight loss of Ignition Loss or dolomite consisting of 34 to 38% by weight CaO, 12 to 16% by weight MgO and 42 to 48% by weight loss. The minerals are then transferred to the sintering machine and first charge the hearth layer from the hopper 4a for the protection of the grate bar as shown in FIG. Therefore, the single mineral 7 is charged in layers between the sintered
이와같이 하여 3층의 상태로 소결기에 장입된 원료는 점화로(16)에 의하여 그 최상면의 소결원료(5)에 점화되고, 그후 소결기상을 이동하는 과정에서 장입공기(9)에 의하여 서서히 하층을 향해서 연소된다. 즉, 소결광의 연소대는 상면으로부터 하방을 향해서 연속적으로 이동하고 최하층의 연소가 완료한 후, 도시되어 있지 않은 냉각기로 배출된다.In this way, the raw material charged into the sintering machine in the three-layer state is ignited by the sintering
이로인해 소결원료의 최하층에 장입된 함아연 분진 펠리트의 연소는 배광측에 가까운 곳에서 일어난다.As a result, combustion of zinc-containing dust pellets charged in the lowermost layer of the sintered raw material occurs near the light distribution side.
함아연 분진펠리트층(단광물)이 연소를 개시하면, 종래 예로써 설명한 로타리킬른법과 동일하게 함탄의 작용에 의하여 상기 (1), (2)식으로 표시한 반응이 일어나고 펠리트에서 금속아연이 증발제거된다. 이때, 함아연 분진 펠리트는 피복제로 피복하고 있으므로 상기와 같이 펠리트는 산화성 분위기로부터 차단되고 상기 (2)식의 반응이 촉진된다.When the zinc-containing dust pellet layer (mono-mineral) starts combustion, the reaction represented by the above formulas (1) and (2) occurs by the action of carbon in the same way as the rotary kiln method described as a conventional example, and the metal zinc in the pellets Evaporated off. At this time, since zinc-containing dust pellets are coat | covered with a coating agent, the pellet is interrupted | blocked from an oxidizing atmosphere as mentioned above, and reaction of said Formula (2) is promoted.
이와 같이 하여 증발한 아연은 산화기류 중에서 상기 (3)식의 반응에 의하여 산화아연이 되고 소결과정에서 발생한 분진과 함께 집진기로 유도된다.The zinc evaporated in this way becomes zinc oxide by the reaction of the above formula (3) in the oxidized air and is led to the dust collector together with the dust generated in the sintering process.
이때, 제1도의 도시와 같이 이 분진펠리트층이 연소하고 있는 부분(상기의 배광측에 가까운 곳)의 윈도상자(10b)로부터의 배가스를 다른 배가스와 분리하여 집진기(12)에서 조립분진을 제거, 이 분진은 분진원료에 리싸이클한 후 집진기(13)에서 산화아연을 포집함으로서 아연 농도가 높은 분진만을 선택적으로 포집이 가능하다. 또 (11)은 집진기이고 이 집진기로 집진한 분진도 분진원료로써 리싸이클 한다. (14)는 블로워이다.At this time, as illustrated in FIG. 1, the exhaust gas from the window box 10b of the portion where the dust pellet layer is burning (near the light distribution side) is separated from other exhaust gases to remove the assembled dust from the
이하, 소형소결기에 의한 함아연 분진으로부터의 아연 회수제거에 관한 실험결과를 표시한다. 실험 후의 탈아연율은 하기의 계산식으로 산출한 것이다.The experimental results for the recovery of zinc from zinc-containing dust by a small sintering unit are shown below. Dezincation rate after an experiment is computed by the following formula.
원료분진의 단광에는 디스크 형태의 ø600mm조립기를 사용했다. 석회석에 의한 피복은 두께 1mm이하로 하는 것이 좋다. 실험에 사용한 소형소결 실험장치(제2도)는 실제로 사용되는 소결기의 조업 조건을 모의하기 위하여 소결층 400mm, 공탑속도 0.33Nm/sec의 실제 조건하에서 운전을 실시했다. 단, 실험후의 펠리트 샘플의 채취의 용이함을 고려하여 함아연 펠리트를 소결원료 상면에 약 100g(소결원료에 대하여 약 2%)장입하고, 연료공기를 하방으로부터 장입했다(제2도 참조). 탈아연율에의 함유탄소량 함유아연량, 피복의 영향을 제3도에 도시했다. 이 결과에서, 함탄, 함아연량과 함유탄소량 함유아연량, 피복의 영향을 제3도에 도시했다. 이 결과에서, 함탄, 함아연량과 탈아연율은 강한 관계를 가지고 있음을 알 수 있다. 이로인해, 고로 장입원료로서의 최적 탈아연율을 얻기 위해서는 함탄, 함아연량의 조정이 필요하고 피복처리가 필요해진다.For the briquetting of raw material dust, a disk type ø600mm granulator was used. The coating by limestone should be 1mm or less in thickness. In order to simulate the operating conditions of the sintering machine actually used, the small sintering experimental apparatus (FIG. 2) used in the experiment was operated under actual conditions of 400 mm of sintered bed and 0.33 Nm / sec of tower speed. However, in consideration of the ease of collecting the pellet sample after the experiment, about 100 g (about 2% of the sintered raw material) was charged into the upper surface of the sintered raw material, and fuel air was charged from below (see FIG. 2). . The effect of the amount of carbon contained and the amount of zinc contained on the de-zinc ratio is shown in FIG. 3. As a result, the effects of carbon content, zinc content, carbon content, zinc content and coating are shown in FIG. From these results, it can be seen that the content of carbon dioxide, zinc-containing and de-zinc ratio have a strong relationship. As a result, in order to obtain an optimum degalvanization rate as the blast furnace charging material, it is necessary to adjust the amount of carbon and the content of zinc, and the coating treatment is required.
상기 실시예에서는 제철소에서 발생하는 함아연 분진의 소결에 의한 탈아연 처리와 그 회수방법에 대하여 설명을 하고 있으나 상기의 실험결과로부터 유추가 가능한 바와 같이 본 발명에서 말하는 소결장치로서는 산화펠릿 소성설비등도 그 범주에 속하는 것이며 그들 장치를 사용한 경우에도 본 발명의 기술적 범주에 속하는 것은 물론이다.In the above embodiment, the de-zinc treatment by the sintering of zinc-containing dust generated in the steel mill and the recovery method thereof have been described. However, as can be derived from the above experimental results, the sintering apparatus according to the present invention is a pelletizing apparatus for pelletizing oxide, etc. Is also within the scope of the present invention, even if those devices are used.
이상의 설명과 같이 본 발명에 의한 함아연 분진의 처리에 의하여 아연농도가 낮은 소결광을 고로에 공급할 수 있을 뿐만 아니라 함아연 분진중의 아연을 갑싸고 쉽게 회수가 가능하다.As described above, not only the sintered ore having a low zinc concentration can be supplied to the blast furnace by the treatment of zinc dust in accordance with the present invention but also the zinc in the zinc dust can be recovered easily and easily.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59011069A JPS60155631A (en) | 1984-01-26 | 1984-01-26 | Method for recovering zinc from material containing zinc compound |
| JP59-11069 | 1984-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR850005508A KR850005508A (en) | 1985-08-26 |
| KR910001010B1 true KR910001010B1 (en) | 1991-02-19 |
Family
ID=11767688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019850000481A Expired KR910001010B1 (en) | 1984-01-26 | 1985-01-26 | Method for recovering zinc from substances containing a zinc conpound |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS60155631A (en) |
| KR (1) | KR910001010B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019103432A1 (en) * | 2017-11-27 | 2019-05-31 | 진성복 | Candle for buddhist ceremony |
| KR20190061315A (en) * | 2017-11-27 | 2019-06-05 | 진성복 | Candle for Buddhism rite |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5167608B2 (en) * | 2006-08-11 | 2013-03-21 | Ｊｆｅスチール株式会社 | Dust sintering method |
| JP7151404B2 (en) * | 2018-11-20 | 2022-10-12 | 住友金属鉱山株式会社 | Method for producing zinc oxide ore |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171631A (en) * | 1981-04-16 | 1982-10-22 | Nippon Steel Corp | Spurious particle for sintering iron ore |
| JPS58185728A (en) * | 1982-04-24 | 1983-10-29 | Nisshin Steel Co Ltd | Manufacture of sintered ore for raw material of blast furnace |
-
1984
- 1984-01-26 JP JP59011069A patent/JPS60155631A/en active Granted
-
1985
- 1985-01-26 KR KR1019850000481A patent/KR910001010B1/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019103432A1 (en) * | 2017-11-27 | 2019-05-31 | 진성복 | Candle for buddhist ceremony |
| KR20190061315A (en) * | 2017-11-27 | 2019-06-05 | 진성복 | Candle for Buddhism rite |
Also Published As
| Publication number | Publication date |
|---|---|
| KR850005508A (en) | 1985-08-26 |
| JPH0477054B2 (en) | 1992-12-07 |
| JPS60155631A (en) | 1985-08-15 |
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