CONVEYOR trough impact rollers have been replaced with impact bars fitted to support cradles to improve operation at a Victoria-based gold mining operation.
Low friction K-Slider impact bars fitted onto six impact cradles fabricated by Quarry and Mining Engineering, were installed end to end to support 8.4 metres of the conveyor belt underneath the secondary crushers.
“The area in question was so difficult to access and maintain it specifically needed a solution to more or less take any prospective downtime out of the equation,” said Kinder & Co managing director Neil Kinder, whose company fitted the bars.
“In particular, along where the conveyor passes under the crushers is very tight and not accessible as there is only a matter of centimetres between the edge of the conveyor structure and the crusher foundations, therefore rollers are difficult to replace and maintain.”
K-Slider impact bars support the conveyor belt at high impact load points by cushioning the load, guiding the belt and protecting it from gouging, reducing overspill, eliminating the common problems of dust and spillage, and they obviate maintenance as there are no moving parts.
They provide a continuous flat surface on which the belt is supported.
Equal stress distribution reduces wear and tear on the belt. Rarely does the product require any maintenance over a long lifespan.
The product comprises three components: a top surface of moulded UHMWPE for smooth movement of the conveyor belt; a body of rubber to cushion load impact; and a base incorporating an aluminium <[etk]>
“T” Track for fastening impact bars onto the main support frame. These adaptable impact bars can be retrofitted to any conveyor with conventional impact rollers by any engineering contractor or an in-house mining or quarry engineering workshop team. General specifications include: dimensions: 1400mm long x 100mm wide x 75mm high; supplied with set of 4 x M16 “T” bolts, washers and Ny-loc nuts; aluminium
“T” track reinforcement for easy installation; 12mm UHMWPE top for smooth movement of the belt; rounded edges along the full length for improved belt protection; tapered leading edges for bi-directional belts: “Bars are the logical successor to impact rollers as the flat surface compared to conventional contact with a roller periphery offers far greater surface area to take impact and support a conveyor belt laden with crushed ore.”