COMMINUTION
comminution circuit , replacing five tertiary crushers , six screens and conveyor belts with an ENDURON HPGR . As a result , Tuprag was able to process 4,200 t / h and increase their gold recovery by 4 %.”
Weir also has a retrofit solution for capacityconstrained HPGRs called ENDURON Reframe that is designed to allow miners to increase production yields without making any significant modifications to their existing civil works . “ In other words , it doesn ’ t require a time-consuming and capital intensive expansion project ,” Dierx said . “ Instead , it combines all the bespoke and proven ENDURON HPGR features – the bearing arrangement , the hydraulic pressing arrangement that enables durable roll skew and self-adjusting cheek plates , etc – with longer rollers ( eg 1.85 m versus 1.65 m ).”
This solution also avoids adding complex and operating cost-increasing componentry , while still allowing the machine to naturally skew , which improves grinding efficiency and reduces loads on the bearings , according to Dierx . “ The results of this upgrade are always obviously going to be site-dependent , but it can deliver up to 25 % increase in capacity ,” he added .
The company ’ s ENDURON HPGRs are also set to benefit from the advances Weir has made with its NEXT Intelligent Solutions , which harness AIdriven technology to optimise mineral processing and maximise efficiency .
“ The NEXT platform acts as an AI-based Intelligent Assistant for HPGRs that offers automated advice and recommendations ,” Dierx said . “ The operator can choose to receive recommendations on equipment set points , or they can empower our solution to make changes autonomously . For example , adapting to changes in ore feed characteristics .”
These adjustments are made based on the process data and Weir AI models , which are built to maximise throughput , while maintaining consistent product size .
“ NEXT intelligent solutions can adjust the equipment or alert the operator when there are relevant drifts from the expected operational
Weir ’ s double line HPGR and air classification system developed for a brownfield operation
parameters so that corrective action can be taken ,” Dierx said . “ It also provides alerts if there ’ s a disturbance in the process ; for instance , if there ’ s unexpected equipment failure or unanticipated process behaviour .”
Alongside this , Weir continues to develop innovative flowsheets , with its process engineers working with miners to test and develop solutions tailored to their specific challenges and operating conditions .
Dierx added : “ We ’ re also deploying existing technologies in new ways . For instance , when the
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Fine Grind Mill
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