MP DEWATER C7647 Viper filtration for gold tailings
Newmont have been successfully operating their 158m2 vacuum belt filter plant for washing and dewatering mill tailings since it was supplied by Jord in 2017.
The original scope included the modular filter, filtrate receivers, vacuum pump, vacuum pump seal water recirculation system, support structure, access platforms, walkways, piping and instrumentation.
Since the original installation, Jord have been awarded a contract to upgrade the system by retrofitting a Viper Filtration system. The Viper Filtration system will facilitate increased throughput, lower moisture content of a finer particle size distribution of tailings. Installation is scheduled for 2021.
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MP DEWATER C5120 Dewatering of iron ore fines
Efficient dewatering is the final process in production of high grade iron ore fines from the desands plant. Jord’s vacuum belt filter systems produce a low moisture content product for transport in one of the toughest industries and harshest outdoor environments.
Jord supplied three off 85m2 vacuum belt filters for filtration of iron ore fines. The scope included the modular filters with cantilevered walkways, filtrate receivers, vacuum pumps and vacuum pump seal water reuse system (tank & pumps). The three filters were assembled as single piece modules in South Korea and shipped to site via Port Hedland.
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MP DEWATER C7071 Spodumene dewatering
Two challenges needed to be met. First was to commission vacuum belt filters for the spodumene concentrate within 20 weeks, a critical path action. Second was the tight water balance for the project, which meant recovering water from the tailings for plant re-use.
Jord’s experience and relationships came to the fore to meet these challenges. We leveraged relationships with our long-term fabricators and component suppliers to plan to meet the schedule. We used modular delivery, including electrical installation in the workshop, as well as specialised site engineering support to fast-track the commissioning and ramp-up. The design for tailings dewatering allowed for maximum production across a wide process variability.
The combination of responsive design, timely commissioning and reliable performance of our equipment has led to further projects for Mineral Resources, and for the fast-emerging lithium processing industry.
Interested in Minerals beneficiation & dewatering?
SERVICE C7136 A matter of millimetres
This is one old plant. First built in 1883, the Jord filters being replaced were installed during a 1976 upgrade.
Project highlights are many. The centre slung agitator design is an industry first. It facilitates a swift lift-out of the tank for inspection and maintenance. So too is the modular agitator design, allowing for unbolting of sections for replacement as needed. This is to accommodate high sand loads anticipated in this particular sugar cane.
The replacement units also have the heaviest wall thickness pipe Jord has built (5mm); quite possibly the heaviest in any sugar drum in the world. This is again, to minimise the effect of sand erosion. Clean out & flooding ports on the side of the drums allowing access for internal cleaning is also an industry first.
Civil design was also complex. 8m piers had to be bored under the filters, inside the old building, to find solid ground below the soft mangrove mud.
Finally, these are the largest filters Jord has designed with a shaft mounted planetary drive. This eliminates the reliability issues associated with worm drive gearboxes.
Installation was a matter of millimetres. There was just 100mm clearance under a railway bridge & only 20mm clearance around live equipment in the plant. Relocation of a 15m tall bagacillo cyclone, mud mixer and lime tank were required.
A 400 ton crawler crane was used to lift the filter into the building. It needed a special pad to be built to minimise ground pressure. The drum then had to be re-rigged, turned & skated away to allow for the second filter to be lifted & manoeuvred into its final resting place. Such is the joy of brownfield projects is this one.
Interested in Minerals beneficiation & dewatering?