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硫脲作为矿石中金的溶剂近二十年来进行了比较深入地研究.本文着重阐述铁在酸性硫脲矿浆中的作用及H_S对沉淀溶金的影响.矿物的溶解及沉淀过程在酸性硫脲矿浆中是复杂的,当矿石中含有可溶性硫化物(如闪锌矿,磁黄铁矿、白铁矿)时,过程不仅有矿物的溶解反应,而且有金属离子的沉淀反应,尤其是当矿浆中有铁存在时,金属离子的沉淀速度迅速提高.本文从化学热力学角度讨论了酸性硫脲矿浆提金体系中矿物的溶解过程及由于硫化矿物的溶解而产生的H_2S和Fe—H_2对硫脲法提金过程的影响.
Thiourea as the gold in the ore solvent for nearly two decades to conduct a more in-depth study.This paper focuses on the role of iron in acidic thiourea slurry and H_S on the precipitation of the dissolution of gold mineral dissolution and precipitation process in acid thiourea Pulp is complex. When the ore contains soluble sulfides (eg, sphalerite, pyrrhotite, and white iron), the process not only dissolves the minerals, but also precipitates metal ions, especially when the slurry In the presence of iron, the precipitation rate of metal ions rapidly increased.This paper discussed the dissolution process of minerals in the acidic thiourea ore slurry gold-leaching system and the effects of H 2 S and Fe-H 2 on the thiourea formation due to the dissolution of sulfide minerals from the perspective of chemical thermodynamics The impact of the French leaching process.