I first wrote about Seratech in Carbon-Neutral Concrete Prototype Wins €100k Architecture Prize For UK Scientists, after reading about this carbon-neutral concrete in the Architect's Journal.
I have just received Seratech's October 2023 Newsletter, which contains two must-read articles.
Olivine In The Age Of Climate Crisis
I'd never heard of olivine until I read about the architecture prize, that was won by Seratech.
This is the Wikipedia entry for olivine.
These are the first three paragraphs of Seratech's article.
On the west coast of Norway, a few kilometres from the village of Åheim, is an open excavation pit – home to the largest commercial olivine deposit in the world.
This seaside quarry, run by Belgian industrial minerals company, Sibelco, works to extract olivine from the earth's crust by drilling, blasting and crushing. A single blast (used to break up the rocks) removes up to 40,000 tonnes of olivine.
The site is predominantly powered by hydroelectricity and boasts a 4km conveyor system for transport which limits the need for heavy vehicle or double-handling of materials in a bid to reduce emissions.
This is Sibelco's video of their impressive mining process.
Note.
The mining operation is fully-integrated with its own ort.
- The video does the mining operation justice.
- Sibelco aim to make the mining of olivine carbon-neutral.
Olivine has this Wikipedia entry, which gives more information.
This Google Map shows the port complex at Åheim.
It looks like mine, processing and port all on one site.
The Big Interview With Mike Eberlin
This is the sub-heading.
Former Managing Director of Tarmac Cement & Lime and chair of MPA Cement, Mike Eberlin, became Seratech's business advisor in June this year. He was intrigued by the novel technology Sam Draper and Barney Shanks had uncovered
These paragraphs are a summary of what Mike Eberlin said.
As we begin to talk, Mike is quick to point out there are two big advantages to Seratech: "They are using magnesium silicate as a starting material which produces silica as a cement replacement and magnesium oxide which can then absorb CO2".
The CO2 absorption is what fascinates Mike as the type of magnesium carbonate Seratech produces is a "slightly unstable" version which when cured, becomes stable and reverts to the rock-like substance you would find in nature. "This came as a surprise because the chemistry wouldn't indicate that was possible," he explains.
Following this discovery, and as Seratech's research progressed, it soon became apparent that the magnesium carbonate lends itself well as a binder and can be used in applications like building blocks and plasterboard: "It's effectively carbon capture and use, not carbon capture and storage because you are mineralising the CO2 into a product.
"We end up in this clever situation whereby it's not that we don't emit the CO2, it's better than that, we absorb CO2 and create two binders that replace cement".
That's what I call an endorsement.
Conclusion
I have this feeling that Seratech will be a very significant company in a couple of years.
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