1. Dr. Kuruvilla (Karl) Cherian
Independent Materials Scientist-Consultant
(Diamond and Advanced Materials Processing Technologies)
Home Office: 347 Rose Brier Drive, Rochester Hills, Michigan, USA
Email: kuruvilla.cherian@usa.net, amprayilusa@gmail.com
Excerpts from applied R&D work in:
Microwave Enhanced Ore Treatment R&D for
New/Economic Process Development
Examples
Mineral Rocks & Refractory Ores:
A. Mineral Rocks - Fracture/Breakage Induced by Microwave Irradiation
B. Refractory Ores - Physicochemical Changes Induced by Microwave
Irradiation
C. Noble Metal Sulfide Ores - Physicochemical Changes Induced Through
Microwave Irradiation Leading to Sulfur Evolution and Substantial*
Increase in Noble Metal Yield
*Precise data on gold and other noble metals yield increase in the
examples shown is confidential to client. If interested in similar
projects, contact: amprayilusa@gmail.com
3. Dr. K. Cherian-MWOT-1
Mineral Rocks & Refractory Ores:
A. Mineral Rocks - Fracture & Breakage Induced by
Microwave Irradiation
Microwave
Irradiation
Microwave
Irradiation
Microwave
Irradiation
4. Dr. K. Cherian-MWOT-2
Mineral Rocks & Refractory Ores (contd):
B. Refractory Ores - Physicochemical Changes Induced by
Microwave Irradiation
Ore sample as-received, before
microwave treatment
Same ore sample after microwave
treatment.
Ore sample as-received, before
microwave treatment
Same ore sample after microwave
treatment, 5min @ ~800C
Dr. K. Cherian-MWOT-3
5. Ore sample in mullite boat with susceptor blocks, before MW treatment.
Ore sample in mullite boat with susceptor blocks, after MW treatment:
Ramp-up to 1000C, 0 min hold
6. Dr. K. Cherian-MWOT-4
Mineral Rocks & Refractory Ores (contd):
C. Noble Metal Sulfide Ores - Physicochemical Changes
Induced Through Microwave Irradiation Leading to Sulfur
Evolution and Substantial* Increase in Noble Metal Yield
Microwave
irradiation
leads to
sulfur evolution
from the ore.
Processing Chamber Ore Processing
Chamber after
microwave treatment.
Sulfur evolved
deposits on the
processing
chamber parts
*Precise data on gold and other noble metals yield
increase is confidential to client.
If interested in similar projects, contact:
amprayilusa@gmail.com
7. Dr. K. Cherian-MWOT-4
Mineral Rocks & Refractory Ores (contd):
C. Noble Metal Sulfide Ores - Physicochemical Changes
Induced Through Microwave Irradiation Leading to Sulfur
Evolution and Substantial* Increase in Noble Metal Yield
Microwave
irradiation
leads to
sulfur evolution
from the ore.
Processing Chamber Ore Processing
Chamber after
microwave treatment.
Sulfur evolved
deposits on the
processing
chamber parts
*Precise data on gold and other noble metals yield
increase is confidential to client.
If interested in similar projects, contact:
amprayilusa@gmail.com