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Modern Mining ›› 2026, Vol. 42 ›› Issue (04): 80-84.

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Experimental Study on the Coordinated Recovery of Silver and Vanadium from a Low-grade Silver-vanadium Ore in Hubei

  

  1. 1 .School of Resources &Safety Engineering,Wuhan Institute of Technology;2.State Key Laboratory of Green and Efficient Development of Phosphorus Resources;3.Hubei Three Gorges Laboratory
  • Online:2026-04-25 Published:2026-05-22

Abstract: For the low utilization rate and difficult separation of a low-grade silver-vanadium ore re ⁃ source in Yichang,Hubei,copper and vanadium separation tests were conducted based on systematic pro ⁃ cess mineralogical analysis.The results showed that the ore has an Ag grade of 65.57 g/t,mainly occurring in pyrite,and a V2O5 grade of 0.65%,primarily hosted in potassium feldspar.Shaking table and spiral chute gravity separation tests indicated that gravity separation could not achieve the separation and enrich ⁃ ment of silver.Flotation condition tests revealed that at the grinding fineness of -0.074 mm accounting for 77.19%,using butyl xanthate +butyl ammonium aerofloat as the combined collectors and No.2 oil as the frother,closed-circuit test consisting of one roughing,two cleanings,and two scavenging stages with mid ⁃ dlings returned in sequence,silver concentrate with Ag grade of 675.25 g/t and recovery rate of 16.89% was obtained.Meanwhile,the recovery rate of vanadium in the tailings reached 98.86%,achieving partial recovery of silver from the silver-vanadium ore.The research results provide technical reference for the subsequent development and utilization of this silver-vanadium ore.

Key words: low-grade silver-vanadium ore, gravity separation, flotation