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Change Law of Apparent Density of Calcite in Sulfuric Acid Solution and Its Influence on Separation
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Ruiqi ZHAO1, 2, Rongdong DENG1, 2, Jialin CHEN1, Zhidong MAO1, Xiangjie WEI1, Chenye FANG1, Huaiyi LI1
Mining and Metallurgical Engineering | 2024, 44(6) : 54 - 59
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Mining and Metallurgical Engineering | 2024, 44(6): 54-59
• MINERAL PROCESSING •
Change Law of Apparent Density of Calcite in Sulfuric Acid Solution and Its Influence on Separation
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Ruiqi ZHAO1, 2, Rongdong DENG1, 2, Jialin CHEN1, Zhidong MAO1, Xiangjie WEI1, Chenye FANG1, Huaiyi LI1
Affiliations
  • 1.Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
  • 2.Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, Fujian, China
Published: 2024-12-01 doi: 10.3969/j.issn.0253-6099.2024.06.012
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The effects of sulfuric acid concentration, calcite particle size, sodium dodecyl sulfate (SDS) dosage and flow rate of dynamic fluid on the apparent density of calcite particles during acid reaction were studied. The results show that when the sulfuric acid concentration is 1%, calcite can sustain at the low apparent density state, and the smaller the calcite sizes, the lower the apparent densities. SDS with a concentration of 300 mg/L can enhance the hydrophobicity of calcite, increase effectively the adsorption density and residence time of CO2 bubbles on calcite, and prolong the duration of low apparent density of calcite. Dynamic fluids may accelerate desorption of gas bubbles from calcite, which is detrimental to the reduction of apparent density of calcite during acid reaction process, but the SDS treatment can significantly reduce this detrimental effect. Settling tests show that acid reaction can prolong the settling time of calcite particles, creating favorable conditions for the separation of calcite and non-carbonate minerals by gravity concentration.

calcite  /  apparent density  /  CO2 bubbles  /  sodium dodecyl sulfate (SDS)  /  dynamic fluid  /  fluorite  /  fluidized bed separation  /  sulfuric acid
Ruiqi ZHAO, Rongdong DENG, Jialin CHEN, Zhidong MAO, Xiangjie WEI, Chenye FANG, Huaiyi LI. Change Law of Apparent Density of Calcite in Sulfuric Acid Solution and Its Influence on Separation[J]. Mining and Metallurgical Engineering, 2024 , 44 (6) : 54 -59 . DOI: 10.3969/j.issn.0253-6099.2024.06.012
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Year 2024 volume 44 Issue 6
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doi: 10.3969/j.issn.0253-6099.2024.06.012
  • Receive Date：2024-06-16
  • Online Date：2026-03-19
  • Published：2024-12-01
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  • Received：2024-06-16
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Affiliations
    1.Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
    2.Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou 350108, Fujian, 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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