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

Five 500 collection cased peristaltic pumps from Watson-Marlow Fluid Technology Solutions are playing an necessary role in an indication plant at Cornish Lithium’s Shallow Geothermal Test Site in the UK.
Originally built to test the concept of extracting lithium from geothermal waters, Cornish Lithium is now working on an upgraded model of the test plant as its drilling program expands, in the end with the aim of growing an efficient, sustainable and cost-effective lithium extraction supply chain.
The preliminary enquiry for pumps came from GeoCubed, a joint venture between Cornish Lithium and Geothermal Engineering Ltd (GEL). ขนาดpressuregauge 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 commission 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, mentioned.
Adam Matthews, Exploration Geologist at Cornish Lithium, added: “Our shallow site centres on a borehole that we drilled in 2019. A special 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 totally different elements of the take a look at 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 floor that is 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 resolution in numerous concentrations through 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 solution.”
She added: “We’re utilizing the remaining 530 series pumps to help perceive what different by-products we can make from the water. For occasion, we can reuse the water for secondary processes in trade and agriculture. For this reason, 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 rate was among the major causes for selecting Watson-Marlow pumps.
“The column needed a circulate rate of 1-2 litres per minute to suit with our take a look at scale, so the 530 pumps had been perfect,” he says. “The different consideration was choosing between guide or automated pumps. At the time, because it was bench scale, we went for handbook, as we knew it would be straightforward to make changes while we have been nonetheless experimenting with process parameters. However, any future industrial lithium extraction system would in fact take advantage of full automation.
Paisley added: “The beauty of having these five pumps is that we will use them to assist evaluate other applied sciences shifting ahead. Lithium extraction from the kind of waters we find in Cornwall isn’t undertaken wherever else on the planet on any scale – the water chemistry here is exclusive.
“It is actually necessary for us to undertake on-site test work with a wide selection of different corporations and technologies. We wish to devise probably the most environmentally accountable resolution using the optimum lithium recovery method, at the lowest potential working price. Using native companies is a part of our strategy, notably as continuity of supply is significant.”
To help fulfil the necessities of the following check plant, Cornish Lithium has enquired after extra 530SN/R2 pumps from Watson-Marlow.
“We’ve also requested a quote for a Qdos one hundred twenty dosing pump from Watson-Marlow, so we are ready to add a certain quantity of acid into the system and achieve pH stability,” Matthews says. “We’ll be doing more drilling within the coming 12 months, which will enable us to test our expertise on a quantity of websites.”

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