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Mechanism for Depressing Calcite with Esterified Starch
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Bangqi WEI1, Jie LI2, Zhao CAO1, Saisai MA1, Yuhan ZHANG3
Mining and Metallurgical Engineering | 2025, 45(1) : 46 - 50
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Mining and Metallurgical Engineering | 2025, 45(1): 46-50
• MINERAL PROCESSING •
Mechanism for Depressing Calcite with Esterified Starch
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Bangqi WEI1, Jie LI2, Zhao CAO1, Saisai MA1, Yuhan ZHANG3
Affiliations
  • 1.School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014000, Inner Mongolia, China
  • 2.School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou 014000, Inner Mongolia, China
  • 3.School of Energy Science and Environment, Inner Mongolia University of Science and Technology, Baotou 014000, Inner Mongolia, China
Published: 2025-02-01 doi: 10.3969/j.issn.0253-6099.2025.01.008
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The mechanism for calcite depression with esterified starch was investigated by performing flotation test, surface tension test, zeta potential measurement and infrared spectroscopy analysis. The results show that, compared with ordinary starches, the esterified starch serves as a significantly stronger depressant for calcite. The esterified starch with bipolar functional groups can be chemisorbed onto calcite, reducing the contact angle of calcite surface and increasing its hydrophilicity. It also causes a negative shift of zeta potential of calcite, therewith, enhancing dispersion of calcite particles and effectively reducing hydrous entrainments in flotation products. In the flotation system using sodium oleate as the collector, esterified starch, possessing greater steric hindrance than sodium oleate, can prevail in their competitive adsorption and hinder the adsorption of sodium oleate.

esterified starch  /  calcite  /  flotation  /  sodium oleate  /  depressant  /  chemisorption  /  contact angle
Bangqi WEI, Jie LI, Zhao CAO, Saisai MA, Yuhan ZHANG. Mechanism for Depressing Calcite with Esterified Starch[J]. Mining and Metallurgical Engineering, 2025 , 45 (1) : 46 -50 . DOI: 10.3969/j.issn.0253-6099.2025.01.008
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doi: 10.3969/j.issn.0253-6099.2025.01.008
  • Receive Date：2024-08-12
  • Online Date：2026-03-17
  • Published：2025-02-01
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  • Received：2024-08-12
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Affiliations
    1.School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014000, Inner Mongolia, China
    2.School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou 014000, Inner Mongolia, China
    3.School of Energy Science and Environment, Inner Mongolia University of Science and Technology, Baotou 014000, Inner Mongolia, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.01.008
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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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