Output at OMW Stilfontein boosted by upgrades
The newly installed deep cone thickener which forms part of the sand reclaim section.
This article has been supplied as a media statement and is not written by Creamer Media. It may be available only for a limited time on this website.
A range of upgrades at OMV’s aggregate and sand plant at Stilfontein in North West province has led to a 40% capacity growth over just 18 months.
OMV’s plant processes quartzite rock dumps generated from shaft-sinking in the area to produce road construction material. While production capacity could previously be pushed to about 1,000 tonnes a day, the plant’s daily output now regularly reaches some 1,400 tonnes.
One of the first improvements was the installation of a 100 metre overland conveyor extension from the dump to the feed box. This improved productivity and overcame the loading constraints experienced previously with the use of front-end loaders. A new feed box was also installed – with its own six metre conveyor belt – to feed the overland conveyor. This addition reduced excessive wear and tear, improving uptime on that part of the plant.
Production has also been improved with the incorporation of a vibrating pan feeder on the secondary crushing plant, regulating the flow of material onto the conveyor belt. Supplied by Weir Minerals Africa and installed by the OMV team, the feeder was the first step in the automation of the secondary crushing process.
A programmable logic controller (PLC) and human machine interface (HMI) has been added to the circuit to automatically regulate the feed box. This allows the choke-feeding of the crusher, which is difficult to accomplish manually.
To raise sand production, a deep cone thickener was installed to extend fines separation. Among the benefits of the new fines separator is that it reduces the amount of saleable material discharged to tailings. It recovered about 10% of saleable product previously discarded into the tailings pond, and contributed to the plant’s sand production capacity rising from 25 to 33 tonnes per hour. This step also reduced the plant’s environmental impact by reducing the quantity of tailings.
Comments
Research Reports
Projects
Latest Multimedia
Latest News
Showroom
Education: Consulting with member companies to obtain the optimal benefits from their B-BBEE spending, skills resources as well as B-BBEE points
VISIT SHOWROOM
M and J Mining are leading suppliers of physical support systems as used by the underground mining industry. Our selection of products are not...
VISIT SHOWROOM
Press Office
Announcements
What's On
Subscribe to improve your user experience...
Option 1 (equivalent of R125 a month):
Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format
Option 2 (equivalent of R375 a month):
All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors
including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.
Already a subscriber?
Forgotten your password?
Receive weekly copy of Creamer Media's Engineering News & Mining Weekly magazine (print copy for those in South Africa and e-magazine for those outside of South Africa)
➕
Recieve daily email newsletters
➕
Access to full search results
➕
Access archive of magazine back copies
➕
Access to Projects in Progress
➕
Access to ONE Research Report of your choice in PDF format
RESEARCH CHANNEL AFRICA
R4500 (equivalent of R375 a month)
SUBSCRIBEAll benefits from Option 1
➕
Access to Creamer Media's Research Channel Africa for ALL Research Reports on various industrial and mining sectors, in PDF format, including on:
Electricity
➕
Water
➕
Energy Transition
➕
Hydrogen
➕
Roads, Rail and Ports
➕
Coal
➕
Gold
➕
Platinum
➕
Battery Metals
➕
etc.
Receive all benefits from Option 1 or Option 2 delivered to numerous people at your company
➕
Multiple User names and Passwords for simultaneous log-ins
➕
Intranet integration access to all in your organisation
