Spotlight Feature Articles WEAR PARTS & GET

WEAR PARTS & GET H-E Parts, like Bradken now part of Hitachi, recently provided a solution to Lihir gold mine in PNG which would extend the liner life of their primary Krupp 16-12N jaw crusher liners New Guinea, recently approached H-E Parts to provide a solution which would extend the liner life of their primary Krupp 16-12N jaw crusher liners. The OEM supplied liners were experiencing excessive wear and only lasting 12 weeks before requiring change-out, putting a strain on maintenance resources and increasing processing costs. Additionally the customer also requested that the new liner solution incorporated tightening of the crusher’s closed side setting (CSS) to further reduce costs associated with milling. H-E Parts recommended travelling to site and adopting a liner development program that utilises state-of-the- art laser scanning in conjunction with H-E Parts proprietary ChamberVision™ and CrusherVision™ software, “allowing H-E Parts dedicated engineering specialists to offer a solution to extend liner life and reduce total cost of ownership.” Following the analysis of worn liner profiles, a new set of liner profiles were offered to the customer that: n Increased liner life by better utilising the adjustment parameters of the crusher n Balanced the teeth volumes of the liner to ensure maximum material utilisation n Accounted for higher fixed jaw wear throughout the life of the liner set n Maintained a more consistent gap across the discharge area of the chamber The proposed profiles were accepted by the customer and a set of CME™ liners installed into the crusher. The result far exceeded the original OEM life of 12 weeks, achieving 30 weeks of production before being removed. International Mining | SEPTEMBER 2019 FLSmidth looks to 3D printing future with Titomic Australian Digital Manufacturing Solutions company, Titomic Ltd has announced that it has entered into an agreement with mining and mineral processing equipment major FLSmidth, headquartered in Copenhagen, Denmark. Under this production trial, Titomic will utilise its proprietary Titomic Kinetic Fusion™ (TKF) additive manufacturing process to build high- wear resistant parts at a preliminary cost of A$12,275 per part. The aim of this prototype is to validate improvements for high-wear resistant mining equipment using Titomic Kinetic Fusion™. Titomic has the exclusive rights to commercialise CSIRO’s proprietary and patented process for the application of cold-gas dynamic spraying of titanium or titanium alloy particles onto a scaffold to produce a load-bearing structure. This technology forms part of what is being marketed by Titomic as Titomic Kinetic Fusion™. It is described as “within the industry of 3D printing” but is more broadly described as additive manufacturing, and the company says there are some key differentiators to Titomic’s technology. “All 3D printing processes involving titanium must be conducted in an inert gas environment to mitigate oxidation which occurs FLSmidth goes composite with PulpMax™ Earlier this year, FLSmidth launched PulpMax™ Composite Mill Liners, lightweight, high- performance SAG and ball mill liners for all minerals processing applications. PulpMax™ Mill Liners are constructed with a rubber-ceramic matrix, and reinforced with carefully selected high- hardness steel inserts and are customisable to fit the specifications of any SAG or ball mill. This allows for improved throughput, safer maintenance, and additional uptime which ultimately creates enhanced productivity for customers. The company focused on the light weight of the PulpMax Composite Mill Liners, which they say makes installation is faster and safer, as each liner is easier to manipulate. The composite nature of the liner also reduces its weight by almost 50%, allowing the plant to increase its ball charge level without increasing the total weight of the mill. This higher ball charge further contributes to the higher throughput. Each liner can now be larger – subject to the size of the mill opening – and the mill can be lined with fewer of them, reducing the downtime required to conduct replacement. A lighter liner also means fewer bolts to hold it in place – a factor that further reduces installation time. The liners are also easy to handle as they have around 50% fewer parts, meaning fewer movements are required to perform a reline, while the composite material can be removed without torching. “Mines recognise the positive financial impact derived from just a few more percentage points in throughput improvement, so many are looking beyond conventional steel cast liners for their mills. PulpMax mean liners are more efficient at discharging slurry, by The lighter weight of FLSmidth PulpMax Composite Mill Liners the company says makes installation is faster and reducing restrictions and safer, as each liner is easier to manipulate recirculation, in addition to extending wear life,” comments Brent Stokes, Global Director Service Line Management Wear & Consumables at FLSmidth. “The results have been positive. One of our customers in South America replaced a chromoly liner in a 40 ft Ø SAG mill with a rubber ceramic composite liner which improved the slurry discharge by six percent. Another customer in North America with a 38ft Ø SAG mill made a similar change to rubber ceramic composite liners and improved the slurry discharge by seven percent and processed more than 19 Mt during a 12-month campaign,” adds Stokes.

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