{"title":"氢基炼钢中从电弧炉炉渣中回收钒和钙的湿法冶金技术","authors":"","doi":"10.1016/j.mineng.2024.108966","DOIUrl":null,"url":null,"abstract":"<div><p>A two-stage direct leaching method has been applied to selectively recover calcium (Ca) and vanadium (V) from electric arc furnace slag obtained from pilot-scale smelting of hydrogen-reduced iron. Nitric acid-ammonium nitrate-water (HNO<sub>3</sub>-NH<sub>4</sub>NO<sub>3</sub>-H<sub>2</sub>O) medium was used in the first stage to produce leachate in which Ca and magnesium (Mg) composed over 99 wt% of the dissolved elements. Sodium carbonate-sodium hydroxide-water (Na<sub>2</sub>CO<sub>3</sub>-NaOH-H<sub>2</sub>O) and ammonium carbonate-water ((NH<sub>4</sub>)<sub>2</sub>CO<sub>3</sub>-H<sub>2</sub>O) were investigated as alternative media for the V leaching stage. The effects of the medium composition, temperature, and liquid-to-solid ratio on element recoveries and selectivity were studied for both stages with the aid of experimental designs. Regression models were fitted that could adequately reproduce the general trends in the data and allowed the optimization of the process within the studied variable space. Under optimum conditions, 55 % Ca was recovered with 91 % selectivity. In the subsequent V leaching stage, (NH<sub>4</sub>)<sub>2</sub>CO<sub>3</sub>-H<sub>2</sub>O proved to be a more promising medium, achieving V recovery of 39 % and selectivity of 90 % under the optimum conditions.</p></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0892687524003959/pdfft?md5=fdbd0dd89b67762ec1c73e196a58a3ea&pid=1-s2.0-S0892687524003959-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Hydrometallurgical recovery of vanadium and calcium from electric arc furnace slag in hydrogen based steelmaking\",\"authors\":\"\",\"doi\":\"10.1016/j.mineng.2024.108966\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A two-stage direct leaching method has been applied to selectively recover calcium (Ca) and vanadium (V) from electric arc furnace slag obtained from pilot-scale smelting of hydrogen-reduced iron. Nitric acid-ammonium nitrate-water (HNO<sub>3</sub>-NH<sub>4</sub>NO<sub>3</sub>-H<sub>2</sub>O) medium was used in the first stage to produce leachate in which Ca and magnesium (Mg) composed over 99 wt% of the dissolved elements. Sodium carbonate-sodium hydroxide-water (Na<sub>2</sub>CO<sub>3</sub>-NaOH-H<sub>2</sub>O) and ammonium carbonate-water ((NH<sub>4</sub>)<sub>2</sub>CO<sub>3</sub>-H<sub>2</sub>O) were investigated as alternative media for the V leaching stage. The effects of the medium composition, temperature, and liquid-to-solid ratio on element recoveries and selectivity were studied for both stages with the aid of experimental designs. Regression models were fitted that could adequately reproduce the general trends in the data and allowed the optimization of the process within the studied variable space. Under optimum conditions, 55 % Ca was recovered with 91 % selectivity. In the subsequent V leaching stage, (NH<sub>4</sub>)<sub>2</sub>CO<sub>3</sub>-H<sub>2</sub>O proved to be a more promising medium, achieving V recovery of 39 % and selectivity of 90 % under the optimum conditions.</p></div>\",\"PeriodicalId\":18594,\"journal\":{\"name\":\"Minerals Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0892687524003959/pdfft?md5=fdbd0dd89b67762ec1c73e196a58a3ea&pid=1-s2.0-S0892687524003959-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Minerals Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0892687524003959\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Minerals Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0892687524003959","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Hydrometallurgical recovery of vanadium and calcium from electric arc furnace slag in hydrogen based steelmaking
A two-stage direct leaching method has been applied to selectively recover calcium (Ca) and vanadium (V) from electric arc furnace slag obtained from pilot-scale smelting of hydrogen-reduced iron. Nitric acid-ammonium nitrate-water (HNO3-NH4NO3-H2O) medium was used in the first stage to produce leachate in which Ca and magnesium (Mg) composed over 99 wt% of the dissolved elements. Sodium carbonate-sodium hydroxide-water (Na2CO3-NaOH-H2O) and ammonium carbonate-water ((NH4)2CO3-H2O) were investigated as alternative media for the V leaching stage. The effects of the medium composition, temperature, and liquid-to-solid ratio on element recoveries and selectivity were studied for both stages with the aid of experimental designs. Regression models were fitted that could adequately reproduce the general trends in the data and allowed the optimization of the process within the studied variable space. Under optimum conditions, 55 % Ca was recovered with 91 % selectivity. In the subsequent V leaching stage, (NH4)2CO3-H2O proved to be a more promising medium, achieving V recovery of 39 % and selectivity of 90 % under the optimum conditions.
期刊介绍：
The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.
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