黑白钨混合矿的苏打连续浸出工艺研究  

Continuous Leaching of Mixed Wolframite⁃Scheelite Concentrate with Soda

作　　者：李军 LI Jun(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,Hunan,China;Hunan Shizhuyuan Non-ferrous Metals Co Ltd,Chenzhou 423037,Hunan,China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]湖南柿竹园有色金属有限责任公司,湖南郴州423037

出　　处：《矿冶工程》2024年第3期106-110,共5页Mining and Metallurgical Engineering

基　　金：国家重点研发计划(2022YFC2905105)。

摘　　要：采用卧式连续加压浸出釜进行了苏打连续分解黑白钨混合矿的实验研究,考察了各工艺参数对混合矿分解率的影响。结果表明,在黑白钨混合矿磨矿细度-0.050 mm、浸出温度200℃、液固比2.1∶1、苏打用量为理论量4倍、氢氧化钠用量25 kg/t矿、进料速度10 m^(3)/h条件下,钨分解率达99.55%,渣中WO_(3)含量仅0.28%。连续浸出方式相对间歇浸出方式具有操作简单、生产效率高、综合能耗低、分解率稳定、自动化程度高等优点。Experimental study was carried out on continuous leaching of mixed wolframite-scheelite concentrate with soda in a horizontal continuous autoclave reactor,and the effects of various processing parameters on the decomposition rate of the mixed ore were investigated.Under the processing conditions,including grinding fineness of-0.050 mm for the mixed ore,leaching temperature of 200℃,liquid-to-solid ratio of 2.1∶1,soda usage at four times of the theoretical dosage,addition of NaOH at 25 kg/t of ore,and feeding rate of 10 m^(3)/h,the decomposition rate of tungsten in the mixed wolframite-scheelite concentrate reaches 99.55%,with only WO_(3) content of 0.28%in the slag.It is found that the continuous leaching with soda offers the advantages of easy operation,higher production efficiency,lower energy consumption,stable decomposition rate,as well as higher automation.

关 键 词：黑钨矿 白钨矿 黑白钨混合矿 苏打压煮 连续浸出 钨矿 

分 类 号：TF111[冶金工程—冶金物理化学]