Addressing recovery and production challenges
HZL had to deal with the issue of fluctuating ore recovery, which is a common challenge in the mining industry these days. And when the companies are trying to improve the recovery of several minerals being mined from one site, the issues get even more challenging and becomes a tall task. Large fluctuations in ore type also make the process even more problematic and expensive.
To achieve better end-product quality, HZL needed to focus on improving their recovery process. This included major investments in RCS flotation cells, Visio Froth™ automation systems and froth pumps. With the new flotation system in place, the company is now achieving more than 89.5% lead and 91.5% zinc recovery with concentrate grades of +55% lead & +51% zinc, respectively. In addition to lead and zinc, the mine is also able to achieve close to 84% recovery for silver, which is a major improvement for the producer. According to HZL, the plants at Sindesar Khurd 2 and 3, where the new flotation cells were installed, are delivering good results and matching the expectations of the company.
In addition, the plant is now operating at a higher capacity than its original design levels. The design capacity was originally 1.5 million tonnes, but the company is now achieving 2 million tonnes per annum and for next year, the aim is to reach 2.1 million tons per annum.