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- Title
Process Mineralogy Characteristics and Exploratory Experimental on Resource Utliization of Tailings from JISCO.
- Authors
YUE Yuanxing; GAO Peng; ZHANG Xiaolong; SUN Yongsheng
- Abstract
The tailings of JISCO have a large amount of resources and high iron grade, with BaO content of about 8%. It is a secondary resource with important recovery value. In order to realize the efficient recovery and utilization of iron and barium in the tailings of JISCO, a systematic process mineralogy study was carried out on the tailings, and the recovery of iron minerals and barium resources was explored. The results show that the grade of TFe is 23.56%, the grade of Ba is 6.68%, and the content of SiO2 is 20.86%. The main metal minerals are hematite (speculate, limonite) and siderite, with contents of 22.23% and 16.17% respectively, and a magnetite content of 7.72%. The main non-metallic minerals are quartz and barite, with contents of 21.85% and 13.18% respectively. The particle size of hematite (speculate, limonite), siderite and barite in the tailings is coarse, and the distribution rate of +75 µm is greater than 60%. The liberation degree of hematite (specularite, limonite) and siderite is not high, mainly in form of rich intergrowths, and the liberation degree of barite is as high as 72.85%. Magnetite/hematite is associated with siderite and quartz in the form of adjoining and wrapping. Nearly half of siderite is closely associated with magnetite/hematite, followed by intercalating with quartz. Barite is mainly adjacent to quartz and magnetite/hematite. The iron minerals and barite were preliminarily separated from the tailings of JISCO by low-intensity magnetic separation and high-intensity magnetic separation. The mixed magnetic separation concentrate was subjected to hydrogen-based mineral phase transformation and low-intensity magnetic separation to obtain an iron concentrate with a TFe grade of 58.77% and an operating recovery of 78. 46%. The barite concentrate with BaSO4 grade of 91. 30% and operation recovery of 90.28% was obtained from the magnetic separation tailings by shaking table gravity separation and flotation roughing. The research provides a reference for the formulation of beneficiation process and comprehensive utilization of iron and barium resources in the tailings of JISCO.
- Subjects
MINERALOGY; MINES &; mineral resources; MAGNETIC separation; HEMATITE; SIDERITE; WASTE recycling
- Publication
Nonferrous Metals (Mineral Processing Section), 2024, Issue 5, p73
- ISSN
1671-9492
- Publication type
Article
- DOI
10.3969/j.issn.1671-9492.2024.05.008