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<p>White carbon black was effectively synthesized from vanadium tailings, a byproduct of clay vanadium ore, using a sulfuric acid precipitation method. The product achieved a purity of 98%, a specific surface area of 231.34 m<sup>2</sup>/g, and a DBP oil absorption value of 2.80 mL/g, all meeting the GB/T 10722 standards. To enhance its hydrophobic properties, an in situ grafting modification was employed, utilizing cationic hexadecyltrimethylammonium bromide (CATB) and anionic sodium dodecyl sulfate (SDS) as surfactant modifiers. Both CATB and SDS, being water-soluble, eliminated the need for organic solvents, ensuring uniform dispersion of the modifying agents and promoting stronger interactions with silica particles during the modification process. The modified white carbon black exhibited a notably smaller median particle size and a significant increase in contact angle, confirming the successful hydrophobic modification. The successful industrialization of this approach has the potential to significantly enhance the economic feasibility of vanadium acid leaching tailings, while fostering the development of high-value materials from industrial waste, thus supporting the principles of circular economy and sustainable manufacturing.</p>

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A Novel Approach for the High-Value Reclamation of Acid Leaching Residues from Clay Vanadium Ores: Synthesis and Functionalization of White Carbon Black

  • 期刊论文

  • 发表日期：

    2025年5月5日

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  • Xuanxiong Kang,
  • Guohua Ye,
  • Siqin Zhu,
  • Yiyang Rong,
  • Changxu Song,
  • Xinyue Xiang,
  • Yun Zhang

摘要

White carbon black was effectively synthesized from vanadium tailings, a byproduct of clay vanadium ore, using a sulfuric acid precipitation method. The product achieved a purity of 98%, a specific surface area of 231.34 m2/g, and a DBP oil absorption value of 2.80 mL/g, all meeting the GB/T 10722 standards. To enhance its hydrophobic properties, an in situ grafting modification was employed, utilizing cationic hexadecyltrimethylammonium bromide (CATB) and anionic sodium dodecyl sulfate (SDS) as surfactant modifiers. Both CATB and SDS, being water-soluble, eliminated the need for organic solvents, ensuring uniform dispersion of the modifying agents and promoting stronger interactions with silica particles during the modification process. The modified white carbon black exhibited a notably smaller median particle size and a significant increase in contact angle, confirming the successful hydrophobic modification. The successful industrialization of this approach has the potential to significantly enhance the economic feasibility of vanadium acid leaching tailings, while fostering the development of high-value materials from industrial waste, thus supporting the principles of circular economy and sustainable manufacturing.