Perissinotto Spa – world leader in the design and manufacture of centrifugal pumps for industrial use active in Vimodrone (MI) since 1947 – announces the implementation of its Pemo Pumps in the Huaron Mining District in Peru.
Huaron Mining District is one of the richest polymetallic deposits in South America. Located in the Pasco region and belonging to the Central Andes belt, the district develops between 4500 and 4700 meters above sea level.
The Huaron mine extracts silver-rich zinc, lead and copper concentrates using the liquid flotation technique to separate the aerophilic components from the hydrophilic ones, so that the latter, sedimenting on the bottom, can be filtered more easily.
Huaron Mining District has planned a series of million-dollar investments to improve the site’s productivity and expand the plant’s processing capacity from 3,200 tons per day of ore to 4,500 tons per day. In Huaron, the installation of a new extraction sludge filtration plant and the replacement of the dry storage plant were planned to reduce the moisture of the mining residues (tailing) to improve the management of the residues themselves and the efficiency of the process.
After a careful analysis of the needs, the supplier Diemme Filtration – a specialist in the production of filter presses and thickeners – identified Pemo Pumps as the most suitable solution for the treatment of zinc residues.
In particular, the choice fell on three Pemo M280 double-body metal “superalloy” pumps (AO/AB/DC/AS-B20 MINE version) that reach 1000 m3/h in the filter filling phase. The models can feed two Diemme Filtration GHT 2500 F model filter presses with a guaranteed productivity of about 4000 tds (Total Dissolved Solids) per day.
Pemo Pumps have proven to be the ideal solution thanks to their reliability, strong wear resistance and ability to operate at high pressures. In particular, the choice of material in contact with the mud fell on Hardollay Pemo, currently the hardest and most resistant pump material on the market (750-800 HB).
The use of Pemo Pumps to feed Diemme Filtration filter presses has led to excellent results. A final residual moisture of 16% was achieved, fully satisfying the customer’s operational needs. In addition, thanks to the double mechanical seal, Pemo Pumps guarantee zero leaks into the environment and do not contaminate the extraction in any way.
The Diemme Filtration & Perissinotto case study for Huaron Mining District is available here.