COMMINUTION AND CRUSHING
The new Weir Minerals Trio ® TP1400 cone crusher
gyratory crusher include top service maintenance , bar type spider and high horsepower capability . The design is at the ‘ ultraduty ’ level that is the current benchmark for primary gyratory crushers specified in many of today ’ s most demanding primary crushing applications ,” states Kurt O ’ Bryan , Global Product Manager for Crushing and Screening at Weir Minerals .
Last year , Weir Minerals announced the global launch of their Trio ® TP cone crusher range and the latest addition to this product line is the Trio ® TP1400 cone crusher . The Trio ® TP1400 cone crusher is the latest in cone crusher technology from Weir Minerals ’ North American Engineering team . The machine is based on proven technology well known to the industry , such as hydraulic functions of adjustment and clearing and crushing force application .
“ The design basis of our new Trio TP1400 cone crusher is the pedestal shaft with rotating bowl to enable consistent crushing performance over the wear life of the liners . The internal design allows removal of all assemblies without the obstruction of difficult to remove interference fit components . Other design features include direct drive with optional VFD and 1,000 kilowatt motor , large diameter main shaft , and improved bearing and head design ,” states O ’ Bryan .
In addition to its Trio ® product range , Weir Minerals is also a recognised leader in HPGR its partnership agreement with KHD Humboldt Wedag in 2013 . The Weir Minerals ’ European Engineering team introduced larger units to their product portfolio such as the Enduron ® RPM 32 280 / 280 HPGR units . These larger HPGR units will accept feed sizes up to 90 mm and produce a -3 mm product .
“ We manufacture all of our HPGRs in-house out of our DCO in the Netherlands and offer a full product range from small HPGRs through to large scale HPGRs and , as a result , can cover a wide variety of tonnages in the marketplace ,” states Stuart Hayton , Sales and Marketing Director for Weir Minerals Netherlands . Weir Minerals says its innovative HPGR technology enables it to carry out quick roll changes , paving the way for uptime , efficiency and , most importantly , increases in customers ’ return on investment .
“ We offer industry leading wear technology with advanced stud technology and can offer some of the longest wear guarantees in the market ,” says Hayton . Weir Minerals told
IM it will continue its aggressive product development and expansion to enhance its comminution offering .
MMD updates on Mineral Sizer evolution
From Mineral Sizers to the world ’ s most advanced Fully Mobile Sizer , for nearly 40 years MMD has been at the forefront of mineral sizing and In-Pit
Sizing & Conveying ( IPSC ) technology . Established in 1978 , MMD designed and patented the Twin Shaft MINERAL SIZER™ for the underground coal industry . “ Today , the Mineral Sizer handles over 80 different minerals in more than 70 countries worldwide , with the ability to process both wet sticky material and hard dry rock , or a combination of both through the same machine .”
The basic design concept behind Mineral Sizer technology involves the use of two rotors with large teeth , on small-diameter shafts , driven at a low speed by a high torque drive system . Mineral Sizers exploit the already inherent weakness in rocks . The patented tooth geometry and configuration subjects the material to stress , bending , tension and shear forces in an effective and quick three-stage breaking action .
A breaker bar , located beneath and between the twin shafts , provides the final stage of breaking in the centre of the machine for maximum control of the finished product size in all three dimensions . The Mineral Sizer is designed to accept minerals without the need for pre-screening . The scroll formation of the teeth draws larger lumps evenly along the shafts , whilst creating space for undersized material to pass through freely without further wear or degradation . It is also capable of handling foreign material without suffering severe damage . “ The agitating action of its twin shafts also makes it ideal for blending material at high
The MMD Mineral Sizer has been well proven in China
throughput rates , whilst minimising the generation of dust and fine material in primary , secondary or tertiary applications .”
MMD states that when a Mineral Sizer is used in a primary application , the highest possible reduction ratio is used to get the material as small as possible , as quickly as possible ; therefore , the sizing effort needs to be at its maximum at the first stage , where a sizer ’ s larger wear components translate into extended operating throughput . In the secondary sizing stage , the machine is geared towards final product size , or ‘ finishing .’ This typically allows for lower reduction ratios with minimal wear and the hardest work to be done by the primary unit .
A full range of MMD Mineral Sizers are available , depending on the application and requirements of the customer . The machine ’ s compact dimensions make it ideal for mobile installations or retrofitting in underground operations where space is limited . A key design benefit is that all the breaking forces are fully contained within the frame , with the machine requiring minimal support structure . “ In both underground and surface applications , MMD ’ s Sizer technology delivers high capacity , versatile and compact machines that size as well as crush material . Shaft dimensions and teeth designs can be customised for each application .”
First exhibited at IMME 2016 in India , MMD ’ s latest generation of light duty 625 Series Sizers are specifically optimised for coal processing “ and are perfectly suited for reducing ROM coal to a conveyable size for the preparation plant . Increased wear life and low-level power consumption enable operators to attain their efficiency and productivity goals .”
Elsewhere , the MMD flagship Fully Mobile Sizer in China “ has been truly tried and tested ” says the group . “ This cost-effective solution can process at an average capacity of 9,000 t / h – with peaks of 14,000 t / h demonstrated – eliminating the need for trucks altogether .” MMD has also deployed successful modular semimobile sizing stations worldwide to take
International Mining | MARCH 2017