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Dispersion Mechanism of Sodium Hexametaphosphate on Potassium Feldspar and Hematite
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Youshun SHU, Haipeng ZENG, Hongjun HUANG
Mining and Metallurgical Engineering | 2023, 43(2) : 61 - 65
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Mining and Metallurgical Engineering | 2023, 43(2): 61-65
• MINERAL PROCESSING •
Dispersion Mechanism of Sodium Hexametaphosphate on Potassium Feldspar and Hematite
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Youshun SHU, Haipeng ZENG, Hongjun HUANG
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  • School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
Published: 2023-04-01 doi: 10.3969/j.issn.0253-6099.2023.02.014
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By performing settling rate test, turbidity test, zeta potential measurements, solution chemistry study and extended DLVO theoretical analysis, the mechanism for sodium hexametaphosphate (SHMP) to disperse ultrafine potassium feldspar and hematite was investigated. It is shown that, Nam (PO3)nm-n (m<n) anions derived from SHMP ionization can wrap around mineral grains in a form of spiral long-chain polymers, forming thick hydrophilic macromolecule protective films. Meanwhile, HPO42-formed by hydrolysis can be adsorbed onto ore grains, leading to decrease of the surface potential and increase of the interparticle electrostatic and steric repulsions. In this case, mineral particles need to overcome a higher potential barrier to reach a stable condensed state. Therewith, the non-selective agglomeration of ore particles weakens, resulting in a significant improvement in dispersion stability.

dispersion  /  sodium hexametaphosphate  /  potassium feldspar  /  hematite  /  extended DLVO theory
Youshun SHU, Haipeng ZENG, Hongjun HUANG. Dispersion Mechanism of Sodium Hexametaphosphate on Potassium Feldspar and Hematite[J]. Mining and Metallurgical Engineering, 2023 , 43 (2) : 61 -65 . DOI: 10.3969/j.issn.0253-6099.2023.02.014
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Year 2023 volume 43 Issue 2
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doi: 10.3969/j.issn.0253-6099.2023.02.014
  • Receive Date：2022-10-17
  • Online Date：2026-03-05
  • Published：2023-04-01
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  • Received：2022-10-17
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    School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, 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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