进料浓度对红土镍矿加压酸浸效果的影响  

Influence of Feed Concentration on the Effect of Pressure Acid Leaching of Nickel Laterite

作　　者：苗壮 刘涛涛 任甲林 孙宁磊[2] 李少龙 MIAO Zhuang;LIU Tao-tao;REN Jia-lin;SUN Ning-lei;LI Shao-long

机构地区：[1]北京友鸿永盛科技有限公司,北京100041 [2]中国恩菲工程技术有限公司,北京100038

出　　处：《有色冶金节能》2021年第6期15-18,共4页Energy Saving of Nonferrous Metallurgy

摘　　要：进料浓度是红土镍矿加压酸浸工艺的重要指标之一。本文系统研究分析了某镍钴项目中进料浓度对矿浆流动性、用水消耗、蒸汽消耗、镍钴产量、加压釜单向阀寿命等的影响。研究表明:进料浓度的提高既可以节约用水消耗,又可以减少蒸汽消耗量,还能提高产能,延长加压釜给料泵单向阀的使用寿命,提高设备运转率,降低单位生产成本,但是浓度的提高会加速提高屈服应力,降低矿浆流动性。因此,在矿浆流动性及设备性能允许的条件下,应尽可能地提高矿浆底流浓度。Feed concentration is one of the critical indicators for the nickel laterite pressure acid leaching process.This paper systematically studied and analyzed the influence of feed concentration in one Nickel-cobalt Project on slurry fluidity,water consumption,steam consumption,nickel and cobalt output,and the life of the check valve of the autoclave.The studies show that the increase in feed concentration can not only save water consumption,but also reduce steam consumption,raise output,extend the service life of the check valve of the feed pump of the autoclave,increase the operational availability of the equipment,and reduce the unit production cost,while it will accelerate the yield stress increase and reduce the slurry fluidity.Therefore,the slurry underflow concentration should be increased as much as possible under the conditions allowed by the slurry fluidity and the equipment performance.

关 键 词：红土镍矿 矿浆浓度 加压酸浸 矿浆流动性 用水消耗 镍钴产量 湿法工艺 

分 类 号：TF815[冶金工程—有色金属冶金]