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Removal of chromate from tannery wastewater: the applicability of sulfate-green rust in real coprecipitation processes 从制革废水中去除铬酸盐:硫酸盐-绿锈在实际共沉淀过程中的适用性

Resources Processing Pub Date : 2018-01-01 DOI: 10.4144/RPSJ.65.67

A. Mamun, M. M. Khin, G. Granata, C. Tokoro

引用次数: 3

Evaluation of Microstructure by Precise Measurement of Resistivity in Pure Ti 用电阻率精确测量纯钛微结构的评价

Resources Processing Pub Date : 2018-01-01 DOI: 10.4144/RPSJ.65.74

M. Ueda, T. Sakamoto, M. Ikeda

引用次数: 0

Synthesis and Evaluation of LTA Type Zeolite from Waste Perlite 废珍珠岩中LTA型沸石的合成及评价

Resources Processing Pub Date : 2017-01-01 DOI: 10.4144/RPSJ.64.69

Makoto Kasai, Y. Kobayashi, Mitsunori Kondo, M. Kamitani, Masakazu Togo, A. Nakahira

引用次数: 1

Copper Recovery from Silicate-Containing Low-Grade Copper Ore Using Flotation Followed by High-Pressure Oxidative Leaching 浮选-高压氧化浸出法回收含硅酸盐低品位铜矿石中的铜

Resources Processing Pub Date : 2017-01-01 DOI: 10.4144/RPSJ.64.3

Baisui Han, B. Altansukh, Kazutoshi Haga, Y. Takasaki, A. Shibayama

{"title":"Copper Recovery from Silicate-Containing Low-Grade Copper Ore Using Flotation Followed by High-Pressure Oxidative Leaching","authors":"Baisui Han, B. Altansukh, Kazutoshi Haga, Y. Takasaki, A. Shibayama","doi":"10.4144/RPSJ.64.3","DOIUrl":"https://doi.org/10.4144/RPSJ.64.3","url":null,"abstract":"In this paper, we present the results for recovery of copper from silicate-containing low-grade copper ore using flotation followed by atmospheric and high-pressure oxidative leaching. The effects of various flotation parameters, such as flotation time, PAX dosage, slurry pH and air injection rate on beneficiation of copper from the low-grade copper ore were studied. The recovery of copper reached 93.1% and the grade of copper improved to 18.2 mass% from 0.4 mass% under collector-less optimum flotation conditions. The enrichment ratio of copper in the concentrate was 45. The copper concentrate obtained from flotation of the low-grade copper ore was treated by atmospheric leaching and high-pressure oxidative leaching processes. A maximum recovery (>93.0%) of copper was obtained by high-pressure oxidative leaching in the water, whereas the copper recovery was lower than 12% in the sulfuric acid solution under atmospheric leaching conditions. The copper concentration in a pregnant leach solution enriched up to 15.0 g/L under the optimized leaching conditions. The effect of impurity such as iron in the sample on the froth flotation and both leaching processes is also considered. A process flow for the recovery of copper from silicate-containing low-grade copper ores is proposed as a result of these studies.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"39 1","pages":"3-14"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77434832","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}

引用次数: 5

Effect of Carbon Black on Copper Ore Leaching in Sulfuric Acid Media at 50°C 炭黑对50℃硫酸介质中铜矿浸出的影响

Resources Processing Pub Date : 2017-01-01 DOI: 10.4144/RPSJ.64.90

H. Nakazawa, Hidekazu Yamamoto

引用次数: 0

Shape Specificity of Crystal of Hydroxyapatite Synthesized by Sol-Gel Method from Scallop Shell 溶胶-凝胶法制备扇贝壳羟基磷灰石晶体的形状特异性研究

Resources Processing Pub Date : 2017-01-01 DOI: 10.4144/RPSJ.64.75

J. Kobayashi, Kelvin Ng Wijaya

引用次数: 1

Effect of Grinding on Sulfuric Acid Leaching Efficiency of Nickel and Aluminum from Oxidative Roasted Alkaline Leaching Residue of Spent Hydrodesulphurization Catalysts 磨矿对废加氢脱硫催化剂氧化焙烧碱浸渣中镍和铝硫酸浸出效率的影响

Resources Processing Pub Date : 2017-01-01 DOI: 10.4144/RPSJ.64.85

Naoya Kaneko, M. Ohno, Tasuma Suzuki, Masakazu Niinae

{"title":"Effect of Grinding on Sulfuric Acid Leaching Efficiency of Nickel and Aluminum from Oxidative Roasted Alkaline Leaching Residue of Spent Hydrodesulphurization Catalysts","authors":"Naoya Kaneko, M. Ohno, Tasuma Suzuki, Masakazu Niinae","doi":"10.4144/RPSJ.64.85","DOIUrl":"https://doi.org/10.4144/RPSJ.64.85","url":null,"abstract":"Spent hydrodesulphurization (HDS) catalysts are treated with hydrometallurgical leaching processes such as caustic leaching and acid leaching with roasting as a pre-treatment step. In the alkaline leaching processes such as sodium carbonate roasting followed by water leaching, most of the molybdenum and vanadium are selectively leached and most of nickel is left in the residue after the alkaline leaching of spent HDS catalysts. Therefore, it is important to recover nickel from the alkaline leaching residue. The main form of nickel in the alkaline leaching residue is spinel, therefore, it is difficult to extract nickel from the residue using mineral acids. In the present study, the effect of grinding conditions on the leaching efficiency of nickel and aluminum from the oxidative roasted alkaline leaching residue was investigated. The dry and wet grinding, grinding speed, grinding time and the amount of roasted product in grinding significantly affected the leaching efficiency of nickel and aluminum. The leaching efficiency of nickel and aluminum from dry ground roasted product was high compared with wet ground roasted product. And also, the leaching efficiency of nickel and aluminum was low in the low amount of the roasted product fed in dry grinding and high grinding speed, because the particles were aggregated again.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"94 1","pages":"85-89"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76430582","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}

引用次数: 0

Galvanic Leaching of Chalcopyrite Using Manganese Oxides in Spent Zinc-Carbon Batteries 废锌碳电池中锰氧化物电浸黄铜矿研究

Resources Processing Pub Date : 2016-01-01 DOI: 10.4144/RPSJ.63.3

H. Nakazawa, Wataru Hareyama

引用次数: 6

Effect of Oxidative Roasting and Grinding on Sulfuric Acid Leaching Efficiency of Nickel and Aluminum from Alkaline Leaching Residue of Spent Hydrodesulphurization Catalysts 氧化焙烧和磨矿对废加氢脱硫催化剂碱浸渣中镍和铝硫酸浸出效率的影响

Resources Processing Pub Date : 2016-01-01 DOI: 10.4144/RPSJ.63.93

K. Manabe, Naoya Kaneko, Tasuma Suzuki, Masakazu Niinae

{"title":"Effect of Oxidative Roasting and Grinding on Sulfuric Acid Leaching Efficiency of Nickel and Aluminum from Alkaline Leaching Residue of Spent Hydrodesulphurization Catalysts","authors":"K. Manabe, Naoya Kaneko, Tasuma Suzuki, Masakazu Niinae","doi":"10.4144/RPSJ.63.93","DOIUrl":"https://doi.org/10.4144/RPSJ.63.93","url":null,"abstract":"Spent hydrodesulphurization (HDS) catalysts are treated with hydrometallurgical leaching processes such as caus tic leaching and acid leaching with roasting as a pre-treatment step. In the alkaline leaching processes such as sodium carbonate roasting followed by water leaching, most of the molybdenum and vanadium are selectively leached and most of nickel is left in the residue after the alkaline leaching of spent HDS catalysts. Therefore, it is important to re cover nickel from the residue. The main form of nickel in the residue is spinel, therefore, it is difficult to extract nickel from the residue using mineral acids. In the present study, the effect of oxidative roasting and grinding conditions on the leaching efficiency of nickel and aluminum from the residue after sodium carbonate roasting followed by water leaching of spent HDS catalysts with sulfuric acid was investigated. The roasting temperature, grinding speed, grinding time and the amount of residue in grinding significantly affected the leaching efficiency of nickel and aluminum. The extraction of aluminum from roast ed residue was low compared with unroasted residue. And also, the extraction of aluminum was low in the low amount of the roasted residue fed in grinding, because the particles were aggregated again. Meanwhile, the extraction of nickel was not affected significantly by the oxidative roasting. Then, the extraction of nickel was not affected by the reaggre - gation of particles under the conditions below 650 rpm of grinding speed and 180 min of grinding time. Therefore, the possibility of preferential leaching of nickel from aluminum was suggested.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"49 1","pages":"93-98"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85573384","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}

引用次数: 0

A Novel Anion Exchanger Composed of Formate Hydrotalcite for Sorptive Recovery of Phosphorus 由甲酸氢滑石组成的新型阴离子交换剂吸附回收磷

Resources Processing Pub Date : 2016-01-01 DOI: 10.4144/RPSJ.63.99

Toshiyuki Tanaka, Ryo Tsukane, T. Matsuda, M. Imaoka, Hiroyasu Tamai

引用次数: 2