Thi Nhan Hau Nguyen, Thi Thu Huong Nguyen, Man-Seung Lee
{"title":"含氯酸钠的盐酸溶液浸出辉钼矿","authors":"Thi Nhan Hau Nguyen, Thi Thu Huong Nguyen, Man-Seung Lee","doi":"10.7844/kirr.2022.31.5.26","DOIUrl":null,"url":null,"abstract":"Molybdenum is widely used in many materials; thus, its recovery from ores and secondary resources has attracted considerable attention. In this study, the leaching of molybdenite ore using hydrochloric acid containing sodium chlorate as an oxidizing agent was studied. The effects of several variables, such as the concentrations of HCl and NaClO 3 , reaction temperature and time, and pulp density, on the leaching of the ore were investigated. Under strong acidic and oxidizing conditions, the sulfide in the ore was dissolved as a sulfate ion, which formed gypsum with Ca(II), leading to a decrease in the leaching percentage of Mo(VI) from the ore. The leaching percentage of molybdenum was greater than 90%, while those of iron, calcium, and silicon were 38, 29, and 67%, respectively, under the optimum conditions: 2.0 M HCl, 0.5 M NaClO 3 , pulp density of 5 g/L, temperature of 90 °C, and treatment time of 60 min.","PeriodicalId":20967,"journal":{"name":"Resources Recycling","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Leaching of Molybdenite by Hydrochloric Acid Solution Containing Sodium Chlorate\",\"authors\":\"Thi Nhan Hau Nguyen, Thi Thu Huong Nguyen, Man-Seung Lee\",\"doi\":\"10.7844/kirr.2022.31.5.26\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Molybdenum is widely used in many materials; thus, its recovery from ores and secondary resources has attracted considerable attention. In this study, the leaching of molybdenite ore using hydrochloric acid containing sodium chlorate as an oxidizing agent was studied. The effects of several variables, such as the concentrations of HCl and NaClO 3 , reaction temperature and time, and pulp density, on the leaching of the ore were investigated. Under strong acidic and oxidizing conditions, the sulfide in the ore was dissolved as a sulfate ion, which formed gypsum with Ca(II), leading to a decrease in the leaching percentage of Mo(VI) from the ore. The leaching percentage of molybdenum was greater than 90%, while those of iron, calcium, and silicon were 38, 29, and 67%, respectively, under the optimum conditions: 2.0 M HCl, 0.5 M NaClO 3 , pulp density of 5 g/L, temperature of 90 °C, and treatment time of 60 min.\",\"PeriodicalId\":20967,\"journal\":{\"name\":\"Resources Recycling\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-10-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Resources Recycling\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.7844/kirr.2022.31.5.26\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Resources Recycling","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.7844/kirr.2022.31.5.26","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
摘要
钼广泛应用于许多材料中;因此，从矿石和二次资源中回收它已经引起了相当大的关注。研究了用含氯酸钠的盐酸作为氧化剂浸出辉钼矿的工艺。考察了盐酸、氯化钠浓度、反应温度、反应时间、矿浆密度等因素对矿石浸出率的影响。在强酸性和氧化条件下,矿石中的硫化硫酸离子溶解,形成石膏与Ca (II),导致减少浸出钼的百分比(VI)从矿石浸出钼的比例大于90%,而铁、钙和硅是38岁,29岁,和67%,分别在最优条件下:HCl 2.0米,0.5米NaClO 3,纸浆密度5 g / L, 90°C的温度,处理时间为60分钟。
Leaching of Molybdenite by Hydrochloric Acid Solution Containing Sodium Chlorate
Molybdenum is widely used in many materials; thus, its recovery from ores and secondary resources has attracted considerable attention. In this study, the leaching of molybdenite ore using hydrochloric acid containing sodium chlorate as an oxidizing agent was studied. The effects of several variables, such as the concentrations of HCl and NaClO 3 , reaction temperature and time, and pulp density, on the leaching of the ore were investigated. Under strong acidic and oxidizing conditions, the sulfide in the ore was dissolved as a sulfate ion, which formed gypsum with Ca(II), leading to a decrease in the leaching percentage of Mo(VI) from the ore. The leaching percentage of molybdenum was greater than 90%, while those of iron, calcium, and silicon were 38, 29, and 67%, respectively, under the optimum conditions: 2.0 M HCl, 0.5 M NaClO 3 , pulp density of 5 g/L, temperature of 90 °C, and treatment time of 60 min.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
