Five 500 sequence cased peristaltic pumps from Watson-Marlow Fluid Technology Solutions are enjoying an important position in a demonstration 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 working on an upgraded model of the test plant as its drilling program expands, finally with the purpose of developing an efficient, sustainable and cost-effective lithium extraction supply 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 website 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 take a look at plant forward 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, said.
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 completely different elements 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 a massive quantity of beads.
“The beads have an active ingredient on their surface that is selective for lithium,” Paisley explained. “As water is pumped through the column, lithium ions connect 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. The acid serves to remove 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 collection pumps to assist perceive what other by-products we can make from the water. For instance, we are ready to reuse the water for secondary processes in business and agriculture. For this reason, we’ve two other columns working in unison to strip all other components from the water as we pump it through.”
According to Matthews, flow fee was among the main causes for choosing Watson-Marlow pumps.
“The column wanted a move fee of 1-2 litres per minute to suit with our check scale, so the 530 pumps were perfect,” he says. “The other consideration was choosing between handbook or automated pumps. At the time, because it was bench scale, we went for guide, as we knew it would be straightforward to make changes whereas we had been nonetheless experimenting with process parameters. However, any future business lithium extraction system would in fact take benefit of full automation.
เกจวัดความดันpressuregauge added: “The great factor about having these 5 pumps is that we will use them to assist consider other applied sciences transferring forward. Lithium extraction from the type of waters we discover in Cornwall just isn’t undertaken wherever else on the planet on any scale – the water chemistry here is exclusive.
“It is basically necessary for us to undertake on-site test work with a selection of different corporations and applied sciences. We want to devise probably the most environmentally accountable solution using the optimum lithium recovery methodology, at the lowest attainable working value. Using local firms is part of our technique, significantly as continuity of provide is vital.”
To assist fulfil the requirements of the next test plant, Cornish Lithium has enquired after more 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 are ready to add a certain amount of acid into the system and obtain pH steadiness,” Matthews says. “We’ll be doing more drilling in the coming 12 months, which can enable us to test our technology on multiple sites.”