THPAL Process Flashcards
H2S gas is commonly found in _.
sewers, swamps, septic tanks, polluted water
It is a colorless, flammable gas with a sweet taste.
Hydrogen Sulfide (H2S)
H2S occurs naturally in _.
Crude petroleum, natural gas, and hit springs
At lower concentration, H2S gas has a _ odor, while at higher concentration, _.
“rotten egg”, a person loses his/her ability to smell the gas even though it is still present
Target organs of H2S
Nose, lungs, brain, eyes
Main equipment for HPAL process
Autoclave
Company established in 1987 focused on saprolite mining
Taganito Mining Corporation
Chemical used to dissolve ore in HPAL process
H2SO4
Temperature and Pressure range for HPAL Process
245 - 250 °C and 4.0 - 4.5 bar
Processes involve in Impurity Removal
P-NTRL, CCD, NTRL, De-ZINC
Process in CCD
Recover dissolved Nickel and Copper by washing
Process of De-ZINC
Zinc-sulfide precipitation with the addition of Hydrogen Sulfide
Process in MS
Sulfide precipitation with the use of H2 as reactant
MS is stored in _ as an _
Flexible bag, intermediate product
Purpose of Final NTRL
To neutralize and precipitate heavy products/metals before discharge to tailings dam
Percentage of Nickel and Cobalt in MS
Nickel - 57%, Cobalt -5%
Air Pollution Control Facilities
- HPAL Scrubber
- Mist Eliminator
- MS Scrubber
- H2S Scrubber
- NaOH Scrubber
- Flocculation Dust Catcher
Water Pollution Control Facilities
- Wastewater Control Facilities
- Tailings Storage Facility
- Supernatant Water Disposal Point
Summarizes essential health and safety information
Safety Card
regulatory limits on the amount or
concentration of a substance in the air
Permissible Exposure Limit
