Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.1071
N. Rokukawa, H. Sakamoto
Recovery of leaded-frame metals from IC (integrated circuit) packages was carried out by crashing. IC packages were taken off from printed wiring boards, and these IC packages are DIP (dual in-line package) type having two lines of pins sealed with resin composition such as epoxy resin. IC package is composed of IC chips, metal lead frame, and sealing material, the content of metal is different depending on types of IC package, and lead frame are categorized into Fe-Ni alloy, Fe-Ni-Co alloy, and Cu alloy according to contained metal. Packaging material made by hardening mixture of thermosetting resin and quartz powder was crashed easily. Sealing material was separated easily by crashing regardless of the number of pin and lead frames of iron base alloy was separated easily by a magnet with a magnetic flux as low as 600 gauss.
{"title":"Recycling. Recovery of Leaded-Frame Metals from Integrated Circuit Package.","authors":"N. Rokukawa, H. Sakamoto","doi":"10.2473/SHIGENTOSOZAI.113.1071","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.1071","url":null,"abstract":"Recovery of leaded-frame metals from IC (integrated circuit) packages was carried out by crashing. IC packages were taken off from printed wiring boards, and these IC packages are DIP (dual in-line package) type having two lines of pins sealed with resin composition such as epoxy resin. IC package is composed of IC chips, metal lead frame, and sealing material, the content of metal is different depending on types of IC package, and lead frame are categorized into Fe-Ni alloy, Fe-Ni-Co alloy, and Cu alloy according to contained metal. Packaging material made by hardening mixture of thermosetting resin and quartz powder was crashed easily. Sealing material was separated easily by crashing regardless of the number of pin and lead frames of iron base alloy was separated easily by a magnet with a magnetic flux as low as 600 gauss.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"23 1","pages":"1071-1073"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80044309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.978
Katsuyoshi Hirayama
Brief historical and commercial information precedes a statement of the sources of ‘secondary precious metals’ materials and a discussion of the pyrometallurgical and chemical treatment circuits. Examples are given of the evaluation methods of materials being treated and pre-sampling methods of treatment and plant used are outlined. Descriptions are given of the work done by Mochikoshi factory, Chugai mine Co., at their refineries with regard to pyrometallurgical treatment, the electro-refinery and chemical treatment, reference being made to new ideas and modifications under investigation at the present time.
{"title":"Recycling. Recycling of Precious Metals.","authors":"Katsuyoshi Hirayama","doi":"10.2473/SHIGENTOSOZAI.113.978","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.978","url":null,"abstract":"Brief historical and commercial information precedes a statement of the sources of ‘secondary precious metals’ materials and a discussion of the pyrometallurgical and chemical treatment circuits. Examples are given of the evaluation methods of materials being treated and pre-sampling methods of treatment and plant used are outlined. Descriptions are given of the work done by Mochikoshi factory, Chugai mine Co., at their refineries with regard to pyrometallurgical treatment, the electro-refinery and chemical treatment, reference being made to new ideas and modifications under investigation at the present time.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"11 1","pages":"978-981"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79141302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.746
H. Matsumoto
{"title":"Progress and the Future Plan of the Total Control System in Taiheiyo Coal Mine.","authors":"H. Matsumoto","doi":"10.2473/SHIGENTOSOZAI.113.746","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.746","url":null,"abstract":"","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"22 1","pages":"746-749"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81857137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.889
M. Tobita
The regulations on waste treatment in Japan show dynamic movements toward “Establishment of Recycling-based Society”, “Waste Reduction”, “Propulsion of Recycling”, “Reinforcement of Management on Chemical Substances” in considering waste as an environmental risk, “Self Management System” represented by ISO14000 series and “Reinforcement of Regulations and Standards”.To understand the Japanese laws and regulations on waste treatment, understanding of the whole environmental laws and international trends on environment is essential, since Japanese laws and regulations have been reflected by those trends and movements. Especially, “Waste Disposal and Public Cleaning Law” and “Law for Promotion of Utilization of Recyclable Resources” put emphasis on proper treatment of generated waste and recycling for the reduction of waste respectivery, and these two laws are the core of the Japanese waste treatment laws.
{"title":"Recycling. Laws and Regulations of Waste Treatment.","authors":"M. Tobita","doi":"10.2473/SHIGENTOSOZAI.113.889","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.889","url":null,"abstract":"The regulations on waste treatment in Japan show dynamic movements toward “Establishment of Recycling-based Society”, “Waste Reduction”, “Propulsion of Recycling”, “Reinforcement of Management on Chemical Substances” in considering waste as an environmental risk, “Self Management System” represented by ISO14000 series and “Reinforcement of Regulations and Standards”.To understand the Japanese laws and regulations on waste treatment, understanding of the whole environmental laws and international trends on environment is essential, since Japanese laws and regulations have been reflected by those trends and movements. Especially, “Waste Disposal and Public Cleaning Law” and “Law for Promotion of Utilization of Recyclable Resources” put emphasis on proper treatment of generated waste and recycling for the reduction of waste respectivery, and these two laws are the core of the Japanese waste treatment laws.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"8 1","pages":"889-894"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84891612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.908
S. Ito
{"title":"Recycling. Physical Separation Techniques. Hand Picking and Photometric Sorting.","authors":"S. Ito","doi":"10.2473/SHIGENTOSOZAI.113.908","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.908","url":null,"abstract":"","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"23 1","pages":"908-911"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85794849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.525
Hitoshi Maie
The Tizapa Mine is located approximately 130 line kilometers west of Mexico City, the United States of Mexico.The deposit is classified into strata-bound massive sulfide deposit similar to the Kuroko type deposit in Japan, in which Dowa Mining Co., Ltd. has accumulated much experience and technology for its exploration and development. In fact, the Tizapa Mine is the first example in Mexico developed by+using this technology.Following the discovery of the deposit by Consejo Recurso de Mineral (CRM) in 1977, exploration was carried out as an Official Development Assistance project between the Mexican and Japanese governments through CRM and Japan International Cooperation Agency/Metal Mining Agency of Japan in 1987. After an international tender offered by Mexican government, the result of the project was succeeded as the development of the Tizapa Mine by Minera Tizapa, S. A. de C. V., a private joint venture company, among Dowa Mining Co., Ltd., Sumitomo Corporation and Industrias Penoles, S. A. de C. V., which is the leading Mexican mining company and the largest silver producer in the world.The development of the Tizapa Mine has been very successful by mutual cooperation among the parties and now the production is reached at 25, 000 tonnes per month, crude ore. Following the successful result of a surface exploration drilling program around the deposit, an expansion plan aiming at 40, 000 tone per month production is now underway.
{"title":"The Development of the Tizapa Mine in Mexico.","authors":"Hitoshi Maie","doi":"10.2473/SHIGENTOSOZAI.113.525","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.525","url":null,"abstract":"The Tizapa Mine is located approximately 130 line kilometers west of Mexico City, the United States of Mexico.The deposit is classified into strata-bound massive sulfide deposit similar to the Kuroko type deposit in Japan, in which Dowa Mining Co., Ltd. has accumulated much experience and technology for its exploration and development. In fact, the Tizapa Mine is the first example in Mexico developed by+using this technology.Following the discovery of the deposit by Consejo Recurso de Mineral (CRM) in 1977, exploration was carried out as an Official Development Assistance project between the Mexican and Japanese governments through CRM and Japan International Cooperation Agency/Metal Mining Agency of Japan in 1987. After an international tender offered by Mexican government, the result of the project was succeeded as the development of the Tizapa Mine by Minera Tizapa, S. A. de C. V., a private joint venture company, among Dowa Mining Co., Ltd., Sumitomo Corporation and Industrias Penoles, S. A. de C. V., which is the leading Mexican mining company and the largest silver producer in the world.The development of the Tizapa Mine has been very successful by mutual cooperation among the parties and now the production is reached at 25, 000 tonnes per month, crude ore. Following the successful result of a surface exploration drilling program around the deposit, an expansion plan aiming at 40, 000 tone per month production is now underway.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"205 1","pages":"525-529"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76659226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.976
S. Funayama
1. “Japan Spent Catalist Recovering Association” have meny Rare Metal Recycling result. If you have interest, directly enquer above Association.2. Our caltivated technics.1) Solvent of precias metal recently useing Iodin, we collect this spent water and Iodin recovering.2) Inorganic coagulater.As now glass polishing agent Cerium Oxide useing, our coagulater “Colgelite” have good water reduction, planning CeO2 recovery.
{"title":"Recycling. Rear Metal Recycling.","authors":"S. Funayama","doi":"10.2473/SHIGENTOSOZAI.113.976","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.976","url":null,"abstract":"1. “Japan Spent Catalist Recovering Association” have meny Rare Metal Recycling result. If you have interest, directly enquer above Association.2. Our caltivated technics.1) Solvent of precias metal recently useing Iodin, we collect this spent water and Iodin recovering.2) Inorganic coagulater.As now glass polishing agent Cerium Oxide useing, our coagulater “Colgelite” have good water reduction, planning CeO2 recovery.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"18 1","pages":"976-977"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81458395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.811
K. Ohga, Kiyoshi Higuchi, Atsushi Shibahara
{"title":"Early Detection System of Mine Fire Using Smell Sensors (2nd Report). Laboratory tests on mixture smells.","authors":"K. Ohga, Kiyoshi Higuchi, Atsushi Shibahara","doi":"10.2473/SHIGENTOSOZAI.113.811","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.811","url":null,"abstract":"","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"59 1","pages":"811-816"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81458815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.833
N. Hatta, M. Isobe, H. Fujimoto
The purpose of the present investigation is to theoretically analyze the flow characteristics of the air-lift pump for the case where a transitional process from the solid-liquid two-phase mixture flow to the solid-gasliquid three-phase mixture flow by injecting gas-phase into the upriser through a gas-injector is present. The system of equations governing the liquid-solid two-phase mixture flow consists of two mass conservation equations, two momentum conservation equations and an equation for two-phase volume fractions. Again, the gasliquid-solid three-phase flow field after the position of gas injection is solved by three mass conservation equations, three momentum equations, a gas equation of state and an equation for the individual phase volume fractions. The transitions of the flow pattern of gas phase from the bubbly flow to the slug flow and from the slug flow to the churn flow are taken into account in the system of governing equations of three-phase flow. In order to verify the validity of the system of governing equations accounting for the transition of the flow patterns, the flow characteristics calculated on the basis of the present theoretical model have been compared with experimental data by several other investigators. As a result, we have found that the present theoretical model built up in this study gives good fit to the experimental data obtained by several investigators.
{"title":"Theoretical Analysis of Flow Characteristics of Multiphase Mixtures in a Vertical Pipe.","authors":"N. Hatta, M. Isobe, H. Fujimoto","doi":"10.2473/SHIGENTOSOZAI.113.833","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.833","url":null,"abstract":"The purpose of the present investigation is to theoretically analyze the flow characteristics of the air-lift pump for the case where a transitional process from the solid-liquid two-phase mixture flow to the solid-gasliquid three-phase mixture flow by injecting gas-phase into the upriser through a gas-injector is present. The system of equations governing the liquid-solid two-phase mixture flow consists of two mass conservation equations, two momentum conservation equations and an equation for two-phase volume fractions. Again, the gasliquid-solid three-phase flow field after the position of gas injection is solved by three mass conservation equations, three momentum equations, a gas equation of state and an equation for the individual phase volume fractions. The transitions of the flow pattern of gas phase from the bubbly flow to the slug flow and from the slug flow to the churn flow are taken into account in the system of governing equations of three-phase flow. In order to verify the validity of the system of governing equations accounting for the transition of the flow patterns, the flow characteristics calculated on the basis of the present theoretical model have been compared with experimental data by several other investigators. As a result, we have found that the present theoretical model built up in this study gives good fit to the experimental data obtained by several investigators.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"8 1","pages":"833-841"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78671279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-01-01DOI: 10.2473/SHIGENTOSOZAI.113.995
M. Kawahara
Effective utilization of slags is one of the most significant issues in the metal industries. Non-ferrous metallurgical slags are becoming widely used in these days, the usage is however far from satisfactory level. In this paper, the current situation and problems on the matter are discussed concerning about copper smelting slag, lead and zinc slag and ferro nickel slag. Simultaneously, relationship between the crystalline phases of these slags changed by cooling condition and the alkali-silica reaction is briefly discussed.
{"title":"Recycling. Utilization of Non-Ferrous Metallurgical Slags.","authors":"M. Kawahara","doi":"10.2473/SHIGENTOSOZAI.113.995","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.995","url":null,"abstract":"Effective utilization of slags is one of the most significant issues in the metal industries. Non-ferrous metallurgical slags are becoming widely used in these days, the usage is however far from satisfactory level. In this paper, the current situation and problems on the matter are discussed concerning about copper smelting slag, lead and zinc slag and ferro nickel slag. Simultaneously, relationship between the crystalline phases of these slags changed by cooling condition and the alkali-silica reaction is briefly discussed.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"31 1","pages":"995-998"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76456859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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