Jin WANG, Shaodong WANG
Calcification roasting has emerged as an effective and environmentally friendly method for extracting vanadium from vanadium slag. This study aims to examine the industrial application of a calcium roasting process in a large rotary kiln, emphasizing the role of manganese vanadate (MnVO4) in enhancing vanadium recovery. Methodologically, the research outlines the optimal conditions that enable recovery rates of vanadium (V) between 87.48% and 89.65%, achieved through specific concentrations of MnVO4 (50-55%), metal-iron (M·Fe) at 1 ±0.5%, a CaO to V2O5 ratio of 0.58–0.64, and a feed rate of 4.44 ±0.56 kg/s. Critical parameters, including rotary speed (87-90 s/r) and temperature control (T2 at 865 ±10°C), were also analyzed, with negative pressure maintained at −10±5 Pa and a combustion air to coke oven gas flow ratio of 5–5.5. The findings suggest that MnVO4 serves not only as an additive but also facilitates significant auxiliary effects for the calcium in the oxidation reaction, resulting in the conversion of vanadium (V) to Ca2V2O7. Overall, this research provides valuable insights into optimizing the recovery of vanadium while mitigating environmental impacts.
@article{ad79bf0f-d2a1-4c8e-8193-b57e86237532,
title={Industrial Application of Large Rotary Kiln for Recovery of Vanadium from Vanadium Slag Added MnVO4 in Calcium Roasting Process},
author={Jin WANG and Shaodong WANG},
year={2017},
language={en}
}TY - JOUR TI - Industrial Application of Large Rotary Kiln for Recovery of Vanadium from Vanadium Slag Added MnVO4 in Calcium Roasting Process AU - Jin WANG AU - Shaodong WANG PY - 2017 LA - en ER -
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