Modern Mining May 2016

PRODUCT News

TAKRAF awarded contract for ore transport system

TAKRAF has recently been awarded the supply of the principal ore transpor- tation system for the Chuquicamata underground mine project by Chile´s state-owned copper mining company, CODELCO. Chuquicamata is one of the largest open-pit copper mines and the second deepest open-pit mine in the world and is located 650 km north of Santiago.

being developed to access the orebody sit- uated beneath the present open-pit mine and aims to extend mining operations for a further 40 years. It is scheduled to be in operation in 2019. TAKRAF’s innovative belt conveyor sys- tem will overcome a number of technical challenges including significant elevation change from the underground mine to the surface, and will comprise a variety of uphill tunnel conveyors that transport cop- per ore from underground storage bins. The system will also include a number of feeder conveyors as well as an overland conveyor feeding into the existing convey- ing system. The conveyor system will be installed with advanced gearless drive technology with the uphill tunnel conveyors boast- ing the highest drive power ever to be installed on a belt conveyor. In fact, total installed drive power for the entire system particles that are capable of entering the lungs and becoming a health hazard. It is therefore important to have control over the silica dust generated from the crushing units. I-CAT‘s water mist technology is used to capture the dust and ensure a visible environment. I-CAT Technical Manager Morne vanWyk explains the project was secured by the Phumla Group, which is I-CAT Zimbabwe’s agent. “Although not a large project, the installation consisted of a dosing unit and surfactant tank, an in-house manufactured control panel with filter and hydraulic flow control valves, some stainless steel piping and GTK nozzles.”

will be around 55 MW. Gearless drives elim- inate the need for a gearbox, significantly reducing the number of main wear parts. TAKRAF’s innovative chute mainte- nance solution will allow for all regular chute maintenance to be conducted from outside the chute, with no person having to enter the chute. Another significant achievement will be the installation of a newly developed steel cord belt, ST10000, on the uphill tun- nel conveyors. This will mark the world’s very first conveyor system to employ this premier steel cord belt technology. The conveyor systemwill boast a design capac- ity of more than 10 000 t/h and, in order to manage and dissipate intense heat gen- erated by the system, a complex cooling system has been included in the project scope, which requires that no heat be dis- sipated to the underground environment. TAKRAF, website: www.takraf.com As part of the process, a bracket was installed on site to facilitate the installation of nozzles on one of the conveyor transfer points. After the installation, testing was conducted on the system before it was commissioned. It has since been running at optimal efficiency. VanWyk says the mine was so impressed with the installation that it has decided to expand on its current system and intends to use I-CAT’s technology at its primary crusher plant and stockpile transfer points. “The solutions that I-CAT offers will be used by the mine above ground and there is a possibility of assisting the operation with road dust solutions underground in future,” he concludes. I-CAT, website: www.i-cat.co.za

Popularly referred to as ‘Chuqui’, the mine has been operating since 1910. The underground project is

Direct drive assembly with TAKRAF designed motor base frame.

Misting system installed at Zimbabwean mine Zimbabwe’s first-ever misting system has been installed at Caledonian Mining’s Blanket gold mine in Gwanda by I-CAT. The installation was on the mine’s primary crusher and screening plant and will open opportunities for more misting projects in the region. The crush-

i ng p r o c e s s at mines pro- d u c e s d u s t

The misting system serves the mine’s primary crusher and

screening plant.

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64  MODERN MINING  May 2016