摘要
针对某冶炼厂现有硫酸镍系统受现场设备、设施条件的制约,处理能力及产能没有办法进一步提高的问题,提出了以下改进措施:新增浓缩后液地池,提前对浓缩后液进行杂质过滤及初步降温;增加盐水循环管道局部截面积,以增加泵出口处的流量及压力;增加压滤机数量,优化生产组织方式。优化改进后,硫酸镍产能由412 t/a提高到629 t/a,直收率由55%提升到62%,电单耗由13 056 kWh/t-NiSO4·7H2O下降到10 294 kWh/t-NiSO4·7H2O。
In view of the problem that treatment capacity and productivity of existing nickel sulfate system in a smelter could not be improved further due to restrict of the field equipment and facility, the following improvement measures were proposed: adding the ground tank of solution after concentration to carry out impurity filtration and preliminary cooling in advance;increasing the local section area of the saline circulating pipeline to increase the flow and pressure at the pump outlet;increasing the number of filter press to optimize the production organization mode. After optimization, the productivity of nickel sulfate was increased from 412 t/a to 629 t/a, the direct recovery was increased from 55% to 62%, and the unit consumption of power was reduced from 13 056 kWh/t-NiSO4·7 H2O to 10 294 kWh/t-NiSO4·7 H2O.
作者
范翔
曹昌盛
刘建新
董博
高玉利
FAN Xiang;CAO Chang-sheng;LIU Jian-xin;DONG Bo;GAO Yu-li
出处
《有色冶金节能》
2019年第6期29-32,共4页
Energy Saving of Nonferrous Metallurgy
关键词
硫酸镍
产能
电单耗
制冷工序
nickel sulfate
productivity
unit consumption of power
refrigeration process
