Watson-Marlow pumps carry out at Cornish Lithium Shallow Geothermal Test Site

Five 500 series cased peristaltic pumps from Watson-Marlow Fluid Technology Solutions are enjoying an important position in an illustration plant at Cornish Lithium’s Shallow Geothermal Test Site within the UK.
Originally constructed to check the idea of extracting lithium from geothermal waters, Cornish Lithium is now working on an upgraded model of the test plant as its drilling program expands, ultimately with the aim of creating an environment friendly, sustainable and cost-effective lithium extraction provide chain.
The preliminary enquiry for pumps came from GeoCubed, a three means partnership 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 fee a £4 million ($5.2 million) pilot plant.
“GeoCubed’s process engineers helped us to design and commission the take a look at plant ahead 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, said.
Adam Matthews, Exploration Geologist at Cornish Lithium, added: “Our shallow site 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 primary of which extracts lithium from the waters by pumping the brine from a container up via a column containing numerous beads.
“The beads have an lively ingredient on their surface that’s selective for lithium,” Paisley defined. “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 answer in varied concentrations by way of the column. เกจวัดความดันน้ำ serves to remove lithium from the beads, which we then transfer to a separate container.
“The pumps are peristaltic, so nothing but the tube comes into contact with the acid answer.”
She added: “We’re utilizing the remaining 530 collection pumps to help understand what other by-products we are ready to make from the water. For occasion, we are ready to reuse the water for secondary processes in business and agriculture. For this cause, we now have two other columns working in unison to strip all different elements from the water as we pump it by way of.”
According to Matthews, circulate rate was among the main reasons for selecting Watson-Marlow pumps.
“The column needed a circulate fee of 1-2 litres per minute to fit with our check scale, so the 530 pumps had been perfect,” he says. “The different consideration was selecting between manual or automated pumps. At the time, because it was bench scale, we went for guide, as we knew it might be straightforward to make changes whereas we had been nonetheless experimenting with course of parameters. However, any future business lithium extraction system would after all reap the advantages of full automation.
Paisley added: “The great factor about having these 5 pumps is that we will use them to help consider other applied sciences moving forward. Lithium extraction from the type of waters we find in Cornwall isn’t undertaken anyplace else on the earth on any scale – the water chemistry right here is exclusive.
“It is really important for us to undertake on-site take a look at work with a big selection of totally different corporations and applied sciences. We need to devise the most environmentally accountable answer utilizing the optimum lithium recovery methodology, on the lowest attainable working value. Using native firms is part of our strategy, notably as continuity of provide is vital.”
To assist fulfil the necessities of the subsequent take a look at plant, Cornish Lithium has enquired after extra 530SN/R2 pumps from Watson-Marlow.
“We’ve additionally 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 stability,” Matthews says. “We’ll be doing extra drilling in the coming 12 months, which will enable us to test our technology on a quantity of sites.”

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