Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine
Siderite is an important iron ore resource in China. Suspension magnetization roasting is an effective method to deal with complex refractory iron ores. In this paper, a small laboratory suspension magnetization roasting device is used to carry out the research on the optimization of suspension magn...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences
2022-08-01
|
| Series: | Kuangchan zonghe liyong |
| Subjects: | |
| Online Access: | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.04.014 |
| _version_ | 1811184961311473664 |
|---|---|
| author | Chao Chen Yuexin Han Yachuan Liu Jing Wang Yingzhi Liu |
| author_facet | Chao Chen Yuexin Han Yachuan Liu Jing Wang Yingzhi Liu |
| author_sort | Chao Chen |
| collection | DOAJ |
| description | Siderite is an important iron ore resource in China. Suspension magnetization roasting is an effective method to deal with complex refractory iron ores. In this paper, a small laboratory suspension magnetization roasting device is used to carry out the research on the optimization of suspension magnetization roasting process and the effect of roasting temperature on the performance of magnetized roasted products for Chongqing Jielong iron mine. The results show that under the conditions of roasting temperature of 500℃, roasting time of 3 min and CO dosage of 0.2 L/min, the iron concentrate grade of 56.31% and recovery rate of 92.05% were obtained. XRD analysis shows that in the range of 450~550℃, most hematite can be transformed into magnetite by reduction roasting for 3 min. Increasing the temperature is conducive to the more thorough reduction of hematite, and the reduction temperature has little effect on the magnetism of roasted products. After reduction roasting, the specific surface area of the pre oxidized sample decreases, and the pore structure collapses and is filled, resulting in the increase of pore size. The change of pore structure may have a certain impact on the subsequent grinding and magnetic separation. The research results have certain significance for understanding the law of suspension magnetization roasting. |
| first_indexed | 2024-04-11T13:21:18Z |
| format | Article |
| id | doaj.art-496b9ca8071a4532b822677ff0d2f4f1 |
| institution | Directory Open Access Journal |
| issn | 1000-6532 |
| language | zho |
| last_indexed | 2024-04-11T13:21:18Z |
| publishDate | 2022-08-01 |
| publisher | Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Kuangchan zonghe liyong |
| spelling | doaj.art-496b9ca8071a4532b822677ff0d2f4f12022-12-22T04:22:11ZzhoInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological SciencesKuangchan zonghe liyong1000-65322022-08-01434758110.3969/j.issn.1000-6532.2022.04.0142022-04chenchaoEffect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron MineChao Chen0Yuexin Han1Yachuan Liu2Jing Wang3Yingzhi Liu4College of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning, ChinaCollege of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu, Sichuan, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu, Sichuan, ChinaInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu, Sichuan, ChinaSiderite is an important iron ore resource in China. Suspension magnetization roasting is an effective method to deal with complex refractory iron ores. In this paper, a small laboratory suspension magnetization roasting device is used to carry out the research on the optimization of suspension magnetization roasting process and the effect of roasting temperature on the performance of magnetized roasted products for Chongqing Jielong iron mine. The results show that under the conditions of roasting temperature of 500℃, roasting time of 3 min and CO dosage of 0.2 L/min, the iron concentrate grade of 56.31% and recovery rate of 92.05% were obtained. XRD analysis shows that in the range of 450~550℃, most hematite can be transformed into magnetite by reduction roasting for 3 min. Increasing the temperature is conducive to the more thorough reduction of hematite, and the reduction temperature has little effect on the magnetism of roasted products. After reduction roasting, the specific surface area of the pre oxidized sample decreases, and the pore structure collapses and is filled, resulting in the increase of pore size. The change of pore structure may have a certain impact on the subsequent grinding and magnetic separation. The research results have certain significance for understanding the law of suspension magnetization roasting.http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.04.014suspension roastingproduct performancesideriteroasting temperature |
| spellingShingle | Chao Chen Yuexin Han Yachuan Liu Jing Wang Yingzhi Liu Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine Kuangchan zonghe liyong suspension roasting product performance siderite roasting temperature |
| title | Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine |
| title_full | Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine |
| title_fullStr | Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine |
| title_full_unstemmed | Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine |
| title_short | Effect of Suspension Magnetization Roasting Temperature on the Properties of Roasted Products of Chongqing Jielong Iron Mine |
| title_sort | effect of suspension magnetization roasting temperature on the properties of roasted products of chongqing jielong iron mine |
| topic | suspension roasting product performance siderite roasting temperature |
| url | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.04.014 |
| work_keys_str_mv | AT chaochen effectofsuspensionmagnetizationroastingtemperatureonthepropertiesofroastedproductsofchongqingjielongironmine AT yuexinhan effectofsuspensionmagnetizationroastingtemperatureonthepropertiesofroastedproductsofchongqingjielongironmine AT yachuanliu effectofsuspensionmagnetizationroastingtemperatureonthepropertiesofroastedproductsofchongqingjielongironmine AT jingwang effectofsuspensionmagnetizationroastingtemperatureonthepropertiesofroastedproductsofchongqingjielongironmine AT yingzhiliu effectofsuspensionmagnetizationroastingtemperatureonthepropertiesofroastedproductsofchongqingjielongironmine |