News

Gravity Mining launches new Multi Gravity Separator

On the 25th April, Gravity Mining based in Blackwater launched their new innovative machine, the Multi Gravity Separator. With support from Innovate UK and Cornwall Council this innovative machine will be shipped all over the world. Up to 70% of the machine’s parts have been sourced from local manufacturing and engineering companies in Cornwall.

Suzie Doe
By Suzie Doe • April 30, 2025 • 2 min read

The MGS’ ability to recover and upgrade fine Hermatite or Goethite makes this a game changer for the upgrade of iron to acceptable levels for modern green iron furnaces.

The high mass pull machine has been specifically designed for bulk commodities such as Iron Ore or Chromite where fine metals are normally lost to tailing dams. These relatively high grade materials can often be upgraded to smelter grades in a single pass using MGS technology.

Gravity Mining's new MGS machine
One end of the new MGS machine

Hematite and goethite iron ores have a much higher commercial value if they can be upgraded to at least 62% Fe (the minimum acceptable grade for modern electric arc furnaces and next generation Green Iron Hydrogen furnaces). Steel production accounts for c.8% of the worlds C02 production ad the MGS could be a significant enabler for future CO2 reduction.

The increased capacity of this machine makes very large plants more practical, instead of forty smaller machines, ten C910 machines can be installed with a smaller footprint, less pipework, simpler controls and less maintenance requirements.

Originally developed for the Cornish Tin industry, the MGS’s subtle centrifugal force simulates enhanced gravity, pinning heavier materials to the wall of the drum to be dragged forward by scraper blades, while lighter tailings are agitated by the shaking motion and washed away.

The MGS can be used as a primary separator of fine materials, scavenging tailings and middling’s from spirals and shaking tables. All MGS machines work best where the material is fully liberated and below 70 microns; generally, the narrower the size band of material the better the performance.

The team at Gravity Mining

It was great to see so many local companies attend the launch event, visit the Gravity Mining website for more information: www.gravitymining.com

Share your Article

Join the Cornwall Mining Georesources Alliance to share your insights and stories—membership opens the door to collaboration and industry impact.