Carbon Cycle has created a breakthrough process for the purification of calcium based minerals such as chalk (calcium carbonate) and gypsum (calcium sulphate), two minerals with significant industrial application.

The cleaning capability of our process.

Waste Chalk and Gypsum

There are many waste sources of chalk and gypsum in the world from numerous industrial processes, which we believe our process can remediate to provide useful feedstocks and reduce disposal costs.


  • Waste chalk (lime mud)
  • Low quality natural chalk


  • Phosphogypsum
  • Mine tailings
  • Flue-gas desulphurisation (FGD) gypsum
  • Waste incineration gypsum
  • Low quality natural gypsum
  • Water treatment sludge

Uses for Clean Chalk and Gypsum

Chalk and gypsum from our process could be used in a wide variety of industrial applications, including:


  • Paper
  • Plastics
  • Paints
  • Toothpaste
  • Agriculture
  • Foods
  • Pharmaceuticals


  • Wallboard
  • Cement
  • Plaster
  • Cosmetics
  • Foods

Benefits of Our Process

Our process has the potential to provide significant benefits to the calcium carbonate and calcium sulphate industries as well as to create a stream of potentially valuable by-products. The potential benefits to our customers includes:

Increased raw material resources

Improved process efficiency

Lower environmental impact

Reduced carbon footprint

New products and markets

Increased revenue and savings