Ceramic impellers for slurry pumping applications from Multotec promote longer wear and are growing in popularity.
Multotec’s ceramic design impellers, in which alumina ceramic components are bonded mechanically and chemically onto a stainless steel impeller skeleton, is growing in popularity. Multotec Wear Linings has supplied ceramic impellers into the market for many years and some 300 ceramic impellers have already been exported by Multotec Wear Linings into the African market during the past four years.
Recently, a large order of 24 ceramic impellers destined for pumping equipment in a copper mine in the Democratic Republic of Congo (DRC), which signals the value this technology brings through longer wear life and less plant downtime.
Designed and manufactured in South Africa by Multotec Wear Linings, part of the Multotec Group, the ceramic impellers can be a viable alternative to conventional pump impellers and in the right application are expected to last up to five times longer.
“The impellers will be used in slurry pumping applications where particle sizes are less than 6mm in size,” says Mark Jarrett, business development manager at Multotec Wear Linings. “The ceramic solution is particularly effective in resisting abrasion, and also deals well with high levels of either acidity or alkalinity.”
“The key advantage of our ceramic technology is to lengthen the replacement intervals for these wear parts,” says Jarrett. “This, in turn, reduces downtime at the plant and raises productivity, invariably delivering positive impact to the bottom line.”
To further enhance the ceramic value-add, Multotec also offers ceramic components on certain other strategic pump components.
Available in various standard sizes, there is scope for the development of custom solutions to suit the customers’ needs. They have been successfully applied in mainly gold and copper operations, primarily in the tailings and leaching circuits, as well as other aggressive environments.
Jarrett highlights that all applications of ceramic solutions must be thoroughly investigated first before the best option is finalised.
“Our experienced Multotec technical professionals will conduct a detailed and methodical assessment of the customer’s plant conditions before recommending the appropriate solution,” he says. “We consider the key characteristics of the plant process to confirm if the ceramic solution is the optimal one. This includes understanding the total wear conditions of the plant system.”