John S Thella has 7 years of experience in developing solutions for complex mineral processing projects. Key responsibilities in his previous positions include but were not limited to process flow sheet development for various ores and coal, metallurgical testing, business development, supply chain management, project management and sales.

John is presently working as a PhD research scholar at JKMRC in the area of complex double refractory Gold ores flotation, a flagship project of Barrick Gold Corporation, Canada.

Researcher biography

Industrial/Professional Experience:

2008-2012, Researcher, Tata Steel Limited, India

2012-2014, Mining manager-India subcontinent, Clariant Chemicals (India) Limited


  1. Patent filed on Hydro cyclone for iron ore slimes beneficiation (Application No: 520/KOL/2010/10.05.2010)
  2. Patent filed on Iron slime beneficiation for fraction below 45 microns (Application No: 816/KOL/2010/ 26.07.2010)


JKTech Mining Leaders’ Program: JKTech mining leaders’ program (2015-2016) graduate (executive management development program)

UQ-IPRS and UQ-Cent Scholarship: Recipient of The University of Queensland’s International Postgraduate Research Scholarship and Centennial Scholarship to pursue doctoral studies in mining/mineral engineering

Barrick Gold Corporation project fund: To support Ph.D. research cost

Tata Innovista-2010: Bagged with the prestigious Tata Innovista Award in promising innovations category for the project “Iron ore slime-A threat turned into Opportunity.”

Aspire Award 2010: Apex Aspire award 2010 by Tata Steel Limited for the project “Iron ore slime beneficiation.”

MHRD-GATE Scholarship: Awarded scholarship for M.Tech studies by Government of India

Research Interests

  • Flotation Surface Chemistry
  • Complex Refractory Gold Ores Flotation
  • Sulfidic Ores Flotation
  • Solution Chemistry
  • Process Mineralogy
  • Mineral Processing