(昆明理工大學(xué) 冶金與能源工程學(xué)院，昆明 650093)
摘 要: 通過(guò)對(duì)廣西某地高硅氧化鋅礦礦物分析可知，礦物中的鋅主要以硅鋅礦和異極礦的形式存在。采用加壓酸浸技術(shù)對(duì)該高硅氧化鋅礦進(jìn)行處理，條件試驗(yàn)研究得出最佳工藝條件為：礦物粒度0.104 mm，硫酸濃度120 g/L，釜內(nèi)壓力1.0 MPa，浸出時(shí)間90 min，反應(yīng)溫度120 ℃，液固比3׃1。綜合性試驗(yàn)研究得出：在最佳工藝條件下，鋅浸出率可達(dá)97%以上，SiO2截留率大于99.2%，浸出礦漿過(guò)濾速率大于880 L/(m2·h)，浸出礦漿具有良好的過(guò)濾性能。
關(guān)鍵字: 高硅氧化鋅礦；加壓酸浸；鋅浸出率；SiO2截留率；礦漿過(guò)濾性能
（College of Metallurgical and Energy Engineering, Kunming University of Science and Technology,
Kunming 650093, China）
Abstract:According to the mineral analysis of high silicon zinc oxide ore from Guangxi province, most of zinc exists in matters of zinc silicate and calamine. The ore was treated by oxygen pressure acid leaching. The best technology conditions are obtained by condition experiments, which are particle size 0.104 mm, sulfuric acid 120 g/L, oxygen pressure 1.0 MPa, leaching time 90 min, reacting temperature 120 ℃ and liquid solid ratio of 3:1. It can be concluded that under the best technology conditions, the leaching rate of zinc is 97% and the rate of SiO2 in solid form is above 99.2%, the slurry filtration rate is over 880 L/(m2·h) and the leaching slurry is in good filtration property.
Key words: high silicon zinc oxide ore; pressure acid leaching; leaching rate of zinc; rate of SiO2 in solid form; filtration property of slurry
