Watson-Marlow pumps perform at Cornish Lithium Shallow Geothermal Test Site

Five 500 sequence cased peristaltic pumps from Watson-Marlow Fluid Technology Solutions are enjoying an necessary role in an illustration plant at Cornish Lithium’s Shallow Geothermal Test Site in the UK.
Originally constructed to test the concept of extracting lithium from geothermal waters, Cornish Lithium is now engaged on an upgraded model of the test plant as its drilling program expands, finally with the purpose of growing an efficient, sustainable and cost-effective lithium extraction provide chain.
The preliminary enquiry for pumps came from GeoCubed, a joint venture between Cornish Lithium and Geothermal Engineering Ltd (GEL). GEL owns a deep borehole site at United Downs in Cornwall where plans are in place to commission a £4 million ($5.2 million) pilot plant.
“GeoCubed’s process engineers helped us to design and fee the check plant forward of the G7, which might run on shallow geothermal waters extracted from Cornish Lithium’s personal research boreholes,” Dr Rebecca Paisley, Exploration Geochemist at Cornish Lithium, stated.
Adam Matthews, Exploration Geologist at Cornish Lithium, added: “Our shallow website centres on a borehole that we drilled in 2019. A particular borehole pump [not Watson-Marlow] extracts the geothermal water [mildly saline, lithium-enriched water] and feeds into the demonstration processing plant.”
The 5 Watson-Marlow 530SN/R2 pumps serve two different components of the test plant, the first of which extracts lithium from the waters by pumping the brine from a container up by way of a column containing a giant quantity of beads.
“The beads have an active ingredient on their surface that is selective for lithium,” Paisley explained. “As water is pumped by way of the column, lithium ions attach to the beads. With the lithium separated, we use two Watson-Marlow 530s to pump an acidic resolution in varied concentrations by way of the column. The acid serves to take away lithium from the beads, which we then switch to a separate container.
“The pumps are peristaltic, so nothing but the tube comes into contact with the acid answer.”
She added: “We’re using the remaining 530 series pumps to assist perceive what other by-products we are in a position to make from the water. For occasion, we are ready to reuse the water for secondary processes in trade and agriculture. For this cause, we now have two other columns working in unison to strip all other components from the water as we pump it through.”
According to Matthews, circulate price was among the many major causes for selecting Watson-Marlow pumps.
“The column needed a circulate price of 1-2 litres per minute to fit with our test scale, so the 530 pumps have been perfect,” he says. “The different consideration was selecting between handbook or automated pumps. At nuova fima pressure gauge ราคา , as a result of it was bench scale, we went for handbook, as we knew it might be simple to make changes whereas we had been still experimenting with process parameters. However, any future commercial lithium extraction system would after all take advantage of full automation.
Paisley added: “The beauty of having these five pumps is that we can use them to help evaluate different applied sciences shifting forward. Lithium extraction from the type of waters we find in Cornwall is not undertaken anywhere else on the planet on any scale – the water chemistry right here is exclusive.
“It is actually necessary for us to undertake on-site check work with a variety of completely different companies and technologies. We want to devise the most environmentally responsible solution utilizing the optimum lithium recovery technique, at the lowest potential working price. Using local corporations is part of our strategy, particularly as continuity of supply is significant.”
To help fulfil the requirements of the next check plant, Cornish Lithium has enquired after extra 530SN/R2 pumps from Watson-Marlow.
“We’ve also requested a quote for a Qdos a hundred and twenty dosing pump from Watson-Marlow, so we can add a sure amount of acid into the system and achieve pH steadiness,” Matthews says. “We’ll be doing more drilling within the coming 12 months, which will enable us to check our technology on multiple websites.”

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