Five 500 collection cased peristaltic pumps from Watson-Marlow Fluid Technology Solutions are taking half in an important role in an illustration plant at Cornish Lithium’s Shallow Geothermal Test Site within the UK.
Originally built to check the idea of extracting lithium from geothermal waters, Cornish Lithium is now engaged on an upgraded version of the take a look at plant as its drilling program expands, finally with the goal of developing an efficient, sustainable and cost-effective lithium extraction provide chain.
The preliminary enquiry for pumps got here from GeoCubed, a joint venture between Cornish Lithium and Geothermal Engineering Ltd (GEL). GEL owns a deep borehole site at United Downs in Cornwall the place 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 forward of the G7, which would run on shallow geothermal waters extracted from Cornish Lithium’s own analysis boreholes,” Dr Rebecca Paisley, Exploration Geochemist at Cornish Lithium, stated.
เกจวัดแรงดันแก๊สหุงต้ม , 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 different parts of the test plant, the first 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’s 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 via the column. The acid serves to take away lithium from the beads, which we then transfer 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 sequence pumps to assist understand what other by-products we can make from the water. For occasion, we will reuse the water for secondary processes in business and agriculture. For this cause, we now have two different columns working in unison to strip all different parts from the water as we pump it by way of.”
According to Matthews, flow price was among the many main causes for choosing Watson-Marlow pumps.
“The column wanted a flow fee of 1-2 litres per minute to fit with our take a look at scale, so the 530 pumps have been ideal,” he says. “The other consideration was selecting between guide or automated pumps. At the time, as a end result of it was bench scale, we went for handbook, as we knew it might be straightforward to make adjustments whereas we had been nonetheless experimenting with course of parameters. However, any future business lithium extraction system would in fact benefit from full automation.
Paisley added: “The wonderful factor about having these five pumps is that we can use them to help consider different technologies shifting ahead. Lithium extraction from the sort of waters we find in Cornwall isn’t undertaken wherever else in the world on any scale – the water chemistry here is unique.
“It is really necessary for us to undertake on-site check work with a variety of totally different firms and technologies. We need to devise essentially the most environmentally accountable answer using the optimum lithium restoration technique, on the lowest attainable working cost. Using local corporations is a part of our strategy, notably as continuity of provide is significant.”
To help fulfil the requirements of the next take a look at plant, Cornish Lithium has enquired after more 530SN/R2 pumps from Watson-Marlow.
“We’ve additionally requested a quote for a Qdos 120 dosing pump from Watson-Marlow, so we are ready to add a particular amount of acid into the system and achieve pH steadiness,” Matthews says. “We’ll be doing extra drilling within the coming 12 months, which can permit us to test our technology on a quantity of websites.”