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Effect of Depressant on Surface Properties of Marmatite During Dry Grinding
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Kaibin FU1, 2, 3, He LI2, Zeming LIU1, 2, 3, Yunlong KONG1, 2, 3, Leming ZHU1, 2, 3
Mining and Metallurgical Engineering | 2025, 45(3) : 104 - 109
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Mining and Metallurgical Engineering | 2025, 45(3): 104-109
• MINERAL PROCESSING •
Effect of Depressant on Surface Properties of Marmatite During Dry Grinding
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Kaibin FU1, 2, 3, He LI2, Zeming LIU1, 2, 3, Yunlong KONG1, 2, 3, Leming ZHU1, 2, 3
Affiliations
  • 1.School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
  • 2.SWUST-Liwu Copper Industry Innovation Institute, Sichuan Liwu Copper Industry Co., Ltd., Ganzi 626000, Sichuan, China
  • 3.Sichuan Tianfu Innovation Research Institute, Southwest University of Science and Technology, Chengdu 610299, Sichuan, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.017
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The effects of common depressants, including calcium oxide and calcium polysulfide, on the surface zeta potential of marmatite were studied by using dry grinding, and the influence of active ions such as Cu2+, Pb2+ and Ag+ on the surface atomic composition and chemical state of marcasite was explored by using XPS. It is found that after depression by calcium oxide and calcium polysulfide, the marmatite has its surface zeta potential shifted to varying degrees. After the marmatite interacts with calcium oxide, its surface zeta potential shifts positively, with point of zero charge at pH of 6.43；after the marmatite interacts with calcium polysulfide, its surface zeta potential shifts negatively at low amplitude. Both calcium oxide and calcium polysulfide exhibit weak depression for marmatite. After activation by ions like Cu2+, Pb2+ and Ag+, the marmatite has sulfur atoms and metallic atoms on the surface at a ratio of 2.07, 1.34 and 1.07, respectively, all higher than the theoretical value (1.0) of sphalerite. Due to Cu2+ with its ionic radius similar to Zn2+ and Fe2+, facilitating strong ion substitution, marmatite presents a metal-deficient mineral phase on the surface, being bound to the surface S2-；while Pb2+ and Ag+ have their ionic radius quite different from Zn2+ and Fe2+, which can alter the surface phase composition of marmatite by adsorption and precipitation, but bring less impact to the ratio of sulfur and metallic atoms. As a result, polysulfides and sulfates exist on the surface of marmatite.

dry grinding  /  marmatite  /  surface property  /  zeta potential  /  binding energy  /  calcium oxide  /  calcium polysulfide  /  depressant  /  activator
Kaibin FU, He LI, Zeming LIU, Yunlong KONG, Leming ZHU. Effect of Depressant on Surface Properties of Marmatite During Dry Grinding[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 104 -109 . DOI: 10.3969/j.issn.0253-6099.2025.03.017
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Year 2025 volume 45 Issue 3
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doi: 10.3969/j.issn.0253-6099.2025.03.017
  • Receive Date：2024-12-15
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-15
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Affiliations
    1.School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
    2.SWUST-Liwu Copper Industry Innovation Institute, Sichuan Liwu Copper Industry Co., Ltd., Ganzi 626000, Sichuan, China
    3.Sichuan Tianfu Innovation Research Institute, Southwest University of Science and Technology, Chengdu 610299, Sichuan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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