Pub Date : 1997-07-01DOI: 10.2473/SHIGENTOSOZAI.113.373
Masaki Imamura, N. Tsuchida, N. Matsugi
Removal of copper from acidic nickel chloride solution was investigated using nickel matte with different compositions in various conditions. The following results were obtained.1) Cupric ion in the solution is reduced to cuprous ion by metallic nickel or Ni3S2 in matte at the early stage after addition of nickel matte into the solution. Consequently metallic copper or copper sulfide; Cu2S is formed by the reaction with the matte.2) Copper is removed as metallic copper when the solution is reduced to below-50 mV of oxidationreduction potential, while as Cu2S above 150mV.3) These types of copper removed from the solution change according to the R value, defined as ratio of content of metallic nickel and Ni3S2 to amount of copper ion in the solution.4) The reaction for metallic copper formation is faster than that for the formation of Cu2S. The difference between the reaction constants for both reactions at 75°C, is approximately ten times.5) Copper is removed to a lower concentration with addition of both matte and elemental sulfur.
{"title":"Removal of Copper from Acidic Nickel Chloride Solution with Nickel Matte.","authors":"Masaki Imamura, N. Tsuchida, N. Matsugi","doi":"10.2473/SHIGENTOSOZAI.113.373","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.373","url":null,"abstract":"Removal of copper from acidic nickel chloride solution was investigated using nickel matte with different compositions in various conditions. The following results were obtained.1) Cupric ion in the solution is reduced to cuprous ion by metallic nickel or Ni3S2 in matte at the early stage after addition of nickel matte into the solution. Consequently metallic copper or copper sulfide; Cu2S is formed by the reaction with the matte.2) Copper is removed as metallic copper when the solution is reduced to below-50 mV of oxidationreduction potential, while as Cu2S above 150mV.3) These types of copper removed from the solution change according to the R value, defined as ratio of content of metallic nickel and Ni3S2 to amount of copper ion in the solution.4) The reaction for metallic copper formation is faster than that for the formation of Cu2S. The difference between the reaction constants for both reactions at 75°C, is approximately ten times.5) Copper is removed to a lower concentration with addition of both matte and elemental sulfur.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"65 1","pages":"373-378"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91075075","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 : 1997-06-25DOI: 10.2473/SHIGENTOSOZAI.113.491
A. Ichiyanagi
{"title":"Recent advance in the resources and material technology. New application of zinc oxide. Ultraviolet absorber aand antibacterial agent.","authors":"A. Ichiyanagi","doi":"10.2473/SHIGENTOSOZAI.113.491","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.491","url":null,"abstract":"","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"23 1","pages":"491-495"},"PeriodicalIF":0.0,"publicationDate":"1997-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75172352","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 : 1997-04-01DOI: 10.2473/SHIGENTOSOZAI.113.247
Mitsugu Yamashita, Tsutomu Yamaguchi, M. Kuriyagawa, G. Zyvoloski
A hydraulic fracturing test was conducted in 1992 at the Hijiori hot dry rock test site. In this test, water was injected into injection well HDR-1. The depth of the injection well was about 2, 200m, and the maximum ternperature of the well was about 270 degC. The main fracture, which was extended along natural joints, was initiated from the bottom hole and a radius of the fracture was estimated to be about 500m from the acoustic emission observation. In this paper, the radius of the fracture, and the pressure, permeability and aperture distribution within the fracture was estimated by numerical simulation. The FEHM (Finite Element Heat and Mass transfer) code was used to estimate the radius of the growing fracture and a pressure distribution within the fracture. The Gangi bed-of-nails model was used to relate the fracture aperture to the fluid pressure. The permeability of the fracture was then calculated from the fracture aperture using Lomize's friction factor. A pressure history match between measured and calculated value was obtained. The simulation result shows that the radius of the fracture at the end of the experiment was about 500m, which agrees well with observations. The estimated apertures of the fracture at the vicinity of the well were 1.4mm and 2.6mm when the injection water rates were kept constant at 6kg/s and 20kg/s, respectively. In this simulation, three fitting parameters were used to match the pressure history. The sensitivities of three parameters on the simulation results were also examined.
{"title":"Estimation of the Fracture Aperture and Shape Created by Massive Hydraulic Fracturing Test","authors":"Mitsugu Yamashita, Tsutomu Yamaguchi, M. Kuriyagawa, G. Zyvoloski","doi":"10.2473/SHIGENTOSOZAI.113.247","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.247","url":null,"abstract":"A hydraulic fracturing test was conducted in 1992 at the Hijiori hot dry rock test site. In this test, water was injected into injection well HDR-1. The depth of the injection well was about 2, 200m, and the maximum ternperature of the well was about 270 degC. The main fracture, which was extended along natural joints, was initiated from the bottom hole and a radius of the fracture was estimated to be about 500m from the acoustic emission observation. In this paper, the radius of the fracture, and the pressure, permeability and aperture distribution within the fracture was estimated by numerical simulation. The FEHM (Finite Element Heat and Mass transfer) code was used to estimate the radius of the growing fracture and a pressure distribution within the fracture. The Gangi bed-of-nails model was used to relate the fracture aperture to the fluid pressure. The permeability of the fracture was then calculated from the fracture aperture using Lomize's friction factor. A pressure history match between measured and calculated value was obtained. The simulation result shows that the radius of the fracture at the end of the experiment was about 500m, which agrees well with observations. The estimated apertures of the fracture at the vicinity of the well were 1.4mm and 2.6mm when the injection water rates were kept constant at 6kg/s and 20kg/s, respectively. In this simulation, three fitting parameters were used to match the pressure history. The sensitivities of three parameters on the simulation results were also examined.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"140 1","pages":"247-253"},"PeriodicalIF":0.0,"publicationDate":"1997-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88740391","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 : 1997-04-01DOI: 10.2473/SHIGENTOSOZAI.113.261
Li Bingrui, Uchino Kenichi, 健一 内野, Inoue Masahiro, 雅弘 井上
There are many ventilation networks utilizing multiple fan system. Not only the airflow distribution analysis but also the optimization of such ventilation networks are affected by the interaction of these fans. This paper describes the influence of the interaction of fans on the optimization of the network.Firstly, fundamental procedures for the optimization of multiple fan network are explained. They are similar to those for a single fan network, the interaction of the fans interferes the convergence of the analysis to the optimum conditions depending on the configurations of the network and fans. The economical conditions of such a procedures will be deduced theoretically.An improved method for optimization of multiple fan network system in various condition is developed on the basis of the theory. Finally, criteria for checking the optimization of a multiple fan ventilation network is proposed and several examples of the application will be shown.
{"title":"The Optimization of A Multiple Fan Ventilation Network. A study on the optimum control of a mine ventilation system (3 rd Report).","authors":"Li Bingrui, Uchino Kenichi, 健一 内野, Inoue Masahiro, 雅弘 井上","doi":"10.2473/SHIGENTOSOZAI.113.261","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.261","url":null,"abstract":"There are many ventilation networks utilizing multiple fan system. Not only the airflow distribution analysis but also the optimization of such ventilation networks are affected by the interaction of these fans. This paper describes the influence of the interaction of fans on the optimization of the network.Firstly, fundamental procedures for the optimization of multiple fan network are explained. They are similar to those for a single fan network, the interaction of the fans interferes the convergence of the analysis to the optimum conditions depending on the configurations of the network and fans. The economical conditions of such a procedures will be deduced theoretically.An improved method for optimization of multiple fan network system in various condition is developed on the basis of the theory. Finally, criteria for checking the optimization of a multiple fan ventilation network is proposed and several examples of the application will be shown.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"517 1","pages":"261-267"},"PeriodicalIF":0.0,"publicationDate":"1997-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72906381","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 : 1997-02-25DOI: 10.2473/SHIGENTOSOZAI.113.140
泰 渡辺, 康史 鈴木
The extraction of rhodium (III) chloro species has been investigated by using a trioctylmethylammonium chloride (R3R'NCl) in various diluents. The extraction isotherm decreasesThe extraction isotherm decreases with increasing the acid concentration. The stoichiometric composition of the complex formed in the organic phase deduced to be (R3R'N) RhCl4(H2O)2. Therefore, the following mechanism is proposed for the extraction of rhodium (III) chloro species.R3R'NCl (org) +RhCl4(H2O)2-(aq)⇔(R3R'N) RhCl4(H2O)2 (org)+Cl-(aq).These results are also confirmed by visible and infrared spectral measurements.In the examination of diluents effects, nitrobenzene and benzene most promoted the extraction of Rh (III) at 0.1 and 7 mol dm-3 hydrochloric acids, respectively.The distribution ratio increases with increasing temperature.
{"title":"塩化トリオクチルメチルアンモニウムによるロジウム(III)クロロ化学種の抽出","authors":"泰 渡辺, 康史 鈴木","doi":"10.2473/SHIGENTOSOZAI.113.140","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.140","url":null,"abstract":"The extraction of rhodium (III) chloro species has been investigated by using a trioctylmethylammonium chloride (R3R'NCl) in various diluents. The extraction isotherm decreasesThe extraction isotherm decreases with increasing the acid concentration. The stoichiometric composition of the complex formed in the organic phase deduced to be (R3R'N) RhCl4(H2O)2. Therefore, the following mechanism is proposed for the extraction of rhodium (III) chloro species.R3R'NCl (org) +RhCl4(H2O)2-(aq)⇔(R3R'N) RhCl4(H2O)2 (org)+Cl-(aq).These results are also confirmed by visible and infrared spectral measurements.In the examination of diluents effects, nitrobenzene and benzene most promoted the extraction of Rh (III) at 0.1 and 7 mol dm-3 hydrochloric acids, respectively.The distribution ratio increases with increasing temperature.","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"66 1","pages":"140-144"},"PeriodicalIF":0.0,"publicationDate":"1997-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80074056","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.113.413
Mutsuji Nanami
{"title":"Recent advance in the resources and material technology. Improvement on the high-temperature bedrock drilling by the practical application of a one-boom hydraulic pressure drill jumbo cum cabin.","authors":"Mutsuji Nanami","doi":"10.2473/SHIGENTOSOZAI.113.413","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.413","url":null,"abstract":"","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"192 1","pages":"413-419"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74193338","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.113.431
T. Taki
{"title":"Recent advance in the resources and material technology. Separation and recovery method of uranium and impurities by adsorption.","authors":"T. Taki","doi":"10.2473/SHIGENTOSOZAI.113.431","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.431","url":null,"abstract":"","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"30 1","pages":"431-435"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74588065","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.113.155
K. Hongo, K. Matsuki, K. Sakaguchi
Based upon the results of finite element analysis for an axisymmetric rock mass with a long HQ core, which is subjected to nonaxisymmetric far-field stresses, tensile stress near the base of the core was analysed to obtain a criterion on core disking in the general state of stresses. The stress conditions of all 77 cases in this study were divided clearly into two groups by the direction of the maximum tensile stress in the central part of the core. In one of the groups the tensile stress is nearly in the direction of the core axis and in the other the tensile stress is nearly perpendicular to the core axis. Only 26 cases in the total 77 cases gave the stress conditions necessary for core disking. In these cases, the difference in the magnitude of the maximum tensile stress between in the central part and in the outer part of the core was small, which suggests that the stress conditions enable a crack initiated at the outer part of the core to penetrate through the entire core. These cases included the stress conditions where the far field minimum principal stress is not in the direction of the core axis. To produce a through crack in the core by tensile stress, the stress contour plane of the tensile stress must exist throughout the cross section of the core. Therefore, it is assumed that core disking occurs if the tensile stress whose upper and lower contour planes just touch each other reaches the tensile strength of the rock. This tensile stress, called the critical tensile stress in this study, is given by the minimum principal tensile stress among the maximum principal tensile stresses which are determined by searching the maximum value along the core axis for a set of the coordinates in the core cross section. Thus, we have proposed the following criterion on core disking:
{"title":"A Criterion on Core Disking in the General State of In-Situ Stresses.","authors":"K. Hongo, K. Matsuki, K. Sakaguchi","doi":"10.2473/SHIGENTOSOZAI.113.155","DOIUrl":"https://doi.org/10.2473/SHIGENTOSOZAI.113.155","url":null,"abstract":"Based upon the results of finite element analysis for an axisymmetric rock mass with a long HQ core, which is subjected to nonaxisymmetric far-field stresses, tensile stress near the base of the core was analysed to obtain a criterion on core disking in the general state of stresses. The stress conditions of all 77 cases in this study were divided clearly into two groups by the direction of the maximum tensile stress in the central part of the core. In one of the groups the tensile stress is nearly in the direction of the core axis and in the other the tensile stress is nearly perpendicular to the core axis. Only 26 cases in the total 77 cases gave the stress conditions necessary for core disking. In these cases, the difference in the magnitude of the maximum tensile stress between in the central part and in the outer part of the core was small, which suggests that the stress conditions enable a crack initiated at the outer part of the core to penetrate through the entire core. These cases included the stress conditions where the far field minimum principal stress is not in the direction of the core axis. To produce a through crack in the core by tensile stress, the stress contour plane of the tensile stress must exist throughout the cross section of the core. Therefore, it is assumed that core disking occurs if the tensile stress whose upper and lower contour planes just touch each other reaches the tensile strength of the rock. This tensile stress, called the critical tensile stress in this study, is given by the minimum principal tensile stress among the maximum principal tensile stresses which are determined by searching the maximum value along the core axis for a set of the coordinates in the core cross section. Thus, we have proposed the following criterion on core disking:","PeriodicalId":22754,"journal":{"name":"The Mining and Materials Processing Institute of Japan","volume":"3 1","pages":"155-161"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76477303","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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