稀盐酸溶液还原浸出大洋多金属结核的研究  

REDUCTION LEACHING OF OCEAN POLYMETALLIC NODULES BY DILUTE HYDROCHLORIC ACID SOLUTION

作　　者：李先柏[1] 周勤俭[1] 杨静[1] 姜小平[1] 

机构地区：[1]长沙矿冶研究院化环所

出　　处：《矿冶工程》1997年第2期50-52,共3页Mining and Metallurgical Engineering

基　　金：国家"八五"攻关课题

摘　　要：用亚硫酸铵作还原剂，在常温常压下用稀盐酸溶液浸出大洋多金属结核，探索了结核矿粒度、还原剂亚硫酸铵加入量、ＨＣｌ浓度、浸出温度、时间及液固比等因素对大洋多金属结核浸出率的影响。当浸出液中ＨＣｌ为２０ｍｏｌ／Ｌ、亚硫酸铵为理论量、１０～４０℃下浸出３０ｍｉｎ，有价金属浸出率分别为（％）：Ｃｕ９４８，Ｎｉ９５３，Ｃｏ９３７，Ｍｎ９６２。Ocean polymetallic nodules was leached with (NH 4) 2SO 3· H 2O as reductant in dilute hydrochloric acid solution at ambient temperature and pressure. The influence of various parameters,such as (NH 4) 2SO 3·H 2O dosage, HCl concentration, leaching temperature and time, particle size and liquid to solid ratio, on the leaching ratio of ocean polymetallic nodules has been studied. At a HCl Concentration of 0 2 mol/L, an appropriate stoichiometric amout of (NH 4) 2SO 3·H 2O, leaching temperatures of 10～40 ℃ and leaching time of 30 min, the leaching ratios of 94 8% Cu, 95 3%Ni, 93 7%Co, 96 2%Mn and 92 1Fe can be obtained, respectively.

关 键 词：大洋 多金属结核 稀稀盐酸 还原 浸出 锰 铁 

分 类 号：P744.3[天文地球—海洋科学]