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

Five 500 collection cased peristaltic pumps from Watson-Marlow Fluid Technology Solutions are taking half in an important role in an indication plant at Cornish Lithium’s Shallow Geothermal Test Site in the UK.
Originally constructed to check the concept of extracting lithium from geothermal waters, Cornish Lithium is now working on an upgraded model of the check plant as its drilling program expands, in the end with the goal of creating an efficient, sustainable and cost-effective lithium extraction provide chain.
The initial enquiry for pumps came from GeoCubed, a joint venture between Cornish Lithium and Geothermal Engineering Ltd (GEL). GEL owns a deep borehole website 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 test plant ahead of the G7, which would run on shallow geothermal waters extracted from Cornish Lithium’s own 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 special borehole pump [not Watson-Marlow] extracts the geothermal water [mildly saline, lithium-enriched water] and feeds into the demonstration processing plant.”
The five Watson-Marlow 530SN/R2 pumps serve two completely different parts of the test plant, the primary of which extracts lithium from the waters by pumping the brine from a container up through a column containing numerous beads.
“The beads have an energetic ingredient on their surface that is selective for lithium,” Paisley defined. “As water is pumped by way of the column, lithium ions connect to the beads. With the lithium separated, we use two Watson-Marlow 530s to pump an acidic solution in varied concentrations by way of the column. เกจวัดแก๊ส serves to remove lithium from the beads, which we then switch to a separate container.
“The pumps are peristaltic, so nothing however the tube comes into contact with the acid resolution.”
She added: “We’re utilizing the remaining 530 series pumps to help understand what different by-products we can make from the water. For instance, we are in a position to reuse the water for secondary processes in trade and agriculture. For this reason, we now have two different columns working in unison to strip all different parts from the water as we pump it via.”
According to Matthews, move rate was among the many major reasons for selecting Watson-Marlow pumps.
“The column needed a flow fee of 1-2 litres per minute to fit with our check scale, so the 530 pumps had been best,” he says. “The different consideration was selecting between guide or automated pumps. At the time, as a outcome of it was bench scale, we went for handbook, as we knew it will be straightforward to make changes while we have been nonetheless experimenting with course of parameters. However, any future commercial lithium extraction system would after all reap the advantages of full automation.
Paisley added: “The beauty of having these 5 pumps is that we will use them to assist evaluate other technologies moving ahead. Lithium extraction from the kind of waters we find in Cornwall just isn’t undertaken anywhere else on the planet on any scale – the water chemistry right here is exclusive.
“It is really important for us to undertake on-site check work with quite lots of totally different companies and applied sciences. We wish to devise the most environmentally responsible resolution using the optimum lithium recovery method, on the lowest potential working cost. Using native corporations is part of our technique, notably as continuity of supply is important.”
To assist fulfil the necessities of the subsequent check plant, Cornish Lithium has enquired after more 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 will add a sure amount of acid into the system and obtain pH balance,” Matthews says. “We’ll be doing extra drilling in the coming 12 months, which can permit us to check our technology on a number of sites.”

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