Potash or potassium salts are produced through two primary sources; brines and evaporite deposits. The two most common and economically important potassium sources are sulfate of potash (K2SO4 – SOP) and muriate of potash (KCl – MOP). Evaporite deposits are usually quite deep, and are either mined through underground mining or in-situ solution mining. The processing thus depends on the mining method but can consist of leaching of impurities, flotation and crystallisation. Brine potash sources are harvested by depositing the brine in solar evaporation ponds, different salts crystallise at different times depending on their solubility and the initial composition of the brine. Brines can be processed this way, or through bulk evaporation and flotation of the combined salt mixture.

MOP and SOP are both used as fertiliser with SOP being a premium product due to not containing chlorides and hence is suitable for chloride sensitive crops such as tobacco, fruits and vegetables. MOP is cheaper and hence is used as a broad acreage fertiliser.

Range of Potash Capabilities:

  • Metallurgical testplans
  • Project management
  • Metallurgical summary reports
  • Flowsheets
  • Mass balances
  • P&IDs
  • Vendor evaluation
  • Project implementation
  • Engineering studies
  • Environmental studies
  • Process description/Equipment lists
  • Detailed design

Please send through your enquiry today via email to info@metsengineering.com and we will call you to discuss your project.

Potash Project Experience:

Errawarra Resources LtdBurkeys FeldsparScoping Study
Errawarra Resources LtdErrawarra Potash ProjectPre-Feasibility Study
Ord River Diamonds LtdCombined Sulphuric Acid/PotashMetallurgical Consulting
ActivEX LtdLake Chandler PotashFlowsheet
METSPotash ExtractionIn-House R&D
ConfidentialVariousProcess Review Finding

Sharing Our Knowledge:

Mineral Processing Course

We offer a course that gives participants in-depth knowledge of the broader aspects of mineral processing. Covering a wide range of topics, participants will gain an understanding of the fundamental unit processes, equipment and flowsheets as well as physical and chemical mineral processing principles. Read more about our course here.