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| Study on process mineralogy of a lead-zinc-silver ore containing arsenic in Hulunbuir area |
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Received:November 08, 2023
Revised:December 19, 2023
Accepted:December 19, 2023
Published Online:March 24, 2025
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| DOI： |
| KeyWord:Arsenic-bearing lead-zinc-silver ore; Process mineralogy; Mineral composition; Embedded features |
| Author | Institution |
| CHEN Qiao-mei |
Changsha Institute of Mining Research Co LTD |
| ZHOU-hao |
Changsha Institute of Mining Research Co LTD |
| ZHU Zhi-wei |
Changsha Institute of Mining Research Co LTD |
| LI Zhao-wang |
Changsha Institute of Mining Research Co LTD |
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| Abstract: |
| The process mineralogy of an arsenic-bearing lead-zinc-silver ore in Hulunbuir was studied by means of chemical multi-element analysis, phase analysis, optical microscope and MLA. The results show that the main metallic minerals in the ore are pyrite, sphalerite, arsenopyrite, pyrrhotite and galena, while the gangue minerals are quartz, mica, feldspar, chlorite and calcite. The useful elements in the ore are Lead and zinc, the content is 1.63% and 1.72% respectively, the associated precious metal silver content is about 46.31g/t, and the harmful element As content is 0.34%. The proportion of +0.105mm galena and sphalerite is 73.56% and 79.2% respectively, which belong to the category of medium particle size distribution. As a whole, galena and sphalerite and other minerals are mainly inlay adjacent to each other, and a small amount of galena and sphalerite are replaced along the cracks or interparticle of pyrite, pyrrhotite, arsenopyrite, chalcopyrite and other minerals, forming a more complex inlay relationship, which may cause galenite-arsenopyrite and sphalerite-arsenopyrite congeners to enter lead concentrate or zinc concentrate. Lead concentrate and zinc concentrate contain high arsenic. |
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