微细浸染型难处理金矿化学氧化-氰化提金试验研究

Experimental Study on Catalytic Chemical Oxidation Pretreatment for Fine Disseminated Refractory Gold Ores

对微细浸染型难处理金矿进行了碱性化学预氧化试验研究,并对影响浸出的几个因素:矿石粒度、碱用量、反应温度、矿浆浓度、反应时间等进行了试验研究,在矿样粒度为-0.044 mm占90%,X+NaOH用量为60 kg/t、矿浆浓度为35%、反应温度为70℃、反应时间为48 h的优化条件下,金的浸出率可达到91.2%。

Experimental studies of catalytic chemical oxidation pretreatment for fine disseminated refractory gold ores, and the factors that influence leaching such as ore size, alkali quantity, reaction temperature, pulp density and reaction were conducted. The leaching rate of gold can reach 91.2% under the optimum conditions that mine sampling with -0. 044 mm size holds 90% , X ＋ NaOH dosage is 60 kg/t, pulp density is 35% , reaction temperature is 70 ℃ and time is 48 h.