The Asia Miner

SEP-OCT 2014

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

Issue link:

Contents of this Issue


Page 67 of 91

66 | ASIA Miner | September/October 2014 A NEW generation of coal and ore materials handling technology is being introduced to the mining industry by a group that engineers chutes and complementary systems to permit faster conveyor belt speeds, greater throughputs, few- er breakdowns and enhanced safety. Chute Technology engineering group targets problems common to many coal and ore plants and loading systems by addressing them with a combination of three skill sets - advanced engi- neering analysis of fow, upscaleable 3D Discrete Element Method design processes and custom manufacturing to individual plant needs. The combined technologies are applicable to existing and new projects, and are comple- mented by the practical experience of each of Chute's three principal partners, who have com- bined experience of more than 80 years in a vari- ety of resource industries across Australia, USA, South America and South Africa. Major benefts of the chute design technolo- gies have been demonstrated by a Western Australian iron ore producer which increased production 50%. Several Hunter Valley coal mines are also beneftting from less wear and fewer breakdowns because of practical individu- alized designs produced by one of the partners, long-established Hunter Valley mining industry supplier TW Woods. Chute Technology combines the manufactur- ing experience of TW Woods, represented by director Tom Woods, with the similarly broad engineering and technology experience of en- gineering consultant Dennis Pomfret of Dennis Pomfret Engineering, and design engineer Gary Telford of McKajj Services, which contributes extensive project management, engineering and drafting experience. All are Newcastle based. "We believe Chute Technology brings together a combination of skills unique in the marketplace - proven skill sets vital to solving typical mineral processing issues," says Tom Woods. These include reducing wear, removing bottlenecks caused by clogging, minimizing damaging im- pacts on belts, and optimizing operational safe- ty and effciency by curbing breakdowns and clean-ups. "Existing designs have fundamentally been stuck in the past, because few companies have seen the need to take advantage of innovations now available with advancing technology and knowledge. As producers aim to double and treble outputs, the under- lying problems are becoming starkly apparent through breakdowns, downtime, problems with sticky material throughput and spillage, creating clean-up and safety issues. "Supervisors on sites or loading facilities are often painfully aware that they have got the problem but the issues have become so prevalent that they sometimes think of it as inevitable. It's not inevitable, just ineffcient and a matter of rectifying the problem with focused design and smarter manufacturing," says Tom Woods. Through a specialist company focused on de- sign, manufacture and optimization of materials handling systems, the partners aim to deliver benefts by applying rigorous design skills and practical know-how gained by experience in mines, ports and industrial plants. "In addition to a proven capability to design new chutes, the new organization will specialize in retroftting existing plants. A principal aim will be to eliminate reliability problems and produc- tion obstacles to bring handling systems up to their full potential," says Dennis Pomfret. "The three parties involved in Chute Technol- ogy have worked together on transfer chutes and have identifed an opportunity to combine resources to form a company that focuses on chutes. We are focusing our capabilities to pro- vide a superior service and product that can be delivered to customers by dedicated ef- fort rather than a generalized engineering ap- proach," he says. FLOLEVEL Technologies, an innovator of level measurement products, has launched a new self-cleaning acoustic density interface trans- mitter for mining and applications that suffer from build-up issues. This new technology ac- curately measures most liquid/slurry solutions where an interface of up to two densities exists and that need to be monitored continuously. The level interface transmitter tracks liquid to liquid interface, liquid to paste interface and liquid to granular interface. It is a hi-powered ultrasonic self-cleaning transmitter that is not affected by changes in the conductivity and dielectric of the solution. The pulse amplitude is great enough to cause a phenomenon called 'rarefaction', which causes cavitation to be produced from the array transducer diaphragms as they pulse. The cavitation bubbles oscillate in front of the diaphragm, which cause implosions that generate high energy levels, removing scale and other build-up problems. "With more than 30 years of experience from many different applications in the min- ing industry, we have developed a density interface transmitter that will significantly improve automation control in very diffi- cult interface applications and significant- ly cut costs for the mining industry", says FloLevel Technologies' owner and inventor Robert Stirling. The FloLevel system is easy to install from the top of the tank and is easy to calibrate. It comes with adjustable 316SS bracket, with fange mounting options and a colour dis- play controller mounted in a stainless steel enclosure. They can measure the density interface, with a maximum control range of 6400mm and resolution accuracy options available are 15mm and 25mm. Various output capability options are available, like 3 x 4-20Ma, Modbus, ProfBus, Founda- tion FieldBus, DeviceNet and Ethernet. The FloLevel Array is suitable for all mineral slurry applications. FloLevel Technologies develops and manu- factures level density and fow analysers for Flotation Cells. The FloLevel products opti- mize the mineral recovery process in fotation cells and signifcantly cut costs for the mining industry. New acoustic density interface transmitter Introducing technology to chute systems Dennis Pomfret, Gary Telford and Tom Woods bring practical hands-on experience as well as technolog- ical expertise to their designs

Articles in this issue

Archives of this issue

view archives of The Asia Miner - SEP-OCT 2014