不同添加剂对某铝土矿拜耳法溶出性能的研究  

Effect of Dissolution Performance of Bauxite by Different Additives in Bayer Process

作　　者：杨帆 张涛[1] 谢刚[1,2] 史淯升 史春阳 俞小花 YANG Fan;ZHANG Tao;XIE Gang;SHI Yusheng;SHI Chunyang;YU Xiaohua(Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology, Kunming 650093,China;State Key Laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]共伴生有色金属资源加压湿法冶金技术国家重点实验室,昆明650500

出　　处：《有色金属工程》2018年第6期51-55,共5页Nonferrous Metals Engineering

基　　金：共伴生有色金属资源加压湿法冶金技术国家重点实验室开放基金项目(yy2016003);云南省选冶新技术重点实验室开放基金项目(xy2015kf03)

摘　　要：对不同添加剂(铁酸二钙、氧化镁、水化铁酸钙、赤泥磁选氧化铁的水化铁酸钙)替代石灰对国内某铝土矿的拜耳法溶出性能影响进行了研究。结果表明,水化铁酸钙完全替代石灰效果最佳,当按C/S=1. 3添加时,赤泥中N/S降至0. 31,A/S降至1. 2,溶出率提升至96. 91%。根据其研究结果,优化生产工艺,为生产氧化铝的企业提供节能减排增产参考。The effect of different additives(dicalcium ferrite,magnesium oxide,calcium ferrite hydrate,calcium ferrite hydrate with red mud magnetic iron oxide)on the dissolution properties of a domestic bauxite by Bayer process was studied.The results show that calcium ferrite hydrate is the best substitute for lime.When C/S=1.3,the red mud N/S decreases to 0.31,the A/S drops to 1.2,and the dissolution rate increases to 96.91%.According to the results of its research,it can optimize the production process and provide a reference for the alumina production enterprises to realize energy saving and emission reducing.

关 键 词：石灰拜耳法 添加剂 水化铁酸钙 钠硅比 

分 类 号：TF821[冶金工程—有色金属冶金]