New tech. for production of alumina from alt. feedstock
Mar 5, 2016 12:35:19 GMT
sorlandet likes this
Post by pling on Mar 5, 2016 12:35:19 GMT
Fra nordicmining.com 26. februar 2014
New technology for production of alumina from alternative feedstock:
• New technology developed by Nordic Mining and Institute for Energy Technology (IFE)
• Builds on previous achievements and utilize new innovations in order to develop an improved production method
• The process is based on a acid solution and sparging technology with integrated use of CO2
• “The CO2 Utilization step” is a innovative process step for production of Precipitated Calcium Carbonate (PCC) and enhanced acid recovery
• The process concept includes production of commercial by-products from PCC and silica
Key financial figures for production of approx. 1 mill ton of alumina:
Conclusion: Future work needs to focus on improvements in acid and energy recovery, and production of saleable by-products
Advantages of the new technology:
• Availability of a new alumina source
• Sourcing from local mineral resources
• Potential for better infrastructure/less transportation
• Moderate process conditions (2-5 atm and 100-160ºC)
• Potentially close to total use of the mineral resource
• Production of commercial by-products
• Mining with little waste, processing with less tailings
• Reduced CO2 footprint, (consumption of 0.5 ton of CO2 per ton of alumina)
New technology for production of alumina from alternative feedstock:
• New technology developed by Nordic Mining and Institute for Energy Technology (IFE)
• Builds on previous achievements and utilize new innovations in order to develop an improved production method
• The process is based on a acid solution and sparging technology with integrated use of CO2
• “The CO2 Utilization step” is a innovative process step for production of Precipitated Calcium Carbonate (PCC) and enhanced acid recovery
• The process concept includes production of commercial by-products from PCC and silica
Key financial figures for production of approx. 1 mill ton of alumina:
| NPV Case 1 (25 years, 7,5%) | 100M USD (Excluding sales of by products) |
| NPV Case 2 (25 years, 7,5%) | 450M USD (Including sales of by products (220’ t/y silica, 100’ t/y PCC)) |
| CAPEX | 600M USD |
| Operational cost | 190M USD per year |
Conclusion: Future work needs to focus on improvements in acid and energy recovery, and production of saleable by-products
Advantages of the new technology:
• Availability of a new alumina source
• Sourcing from local mineral resources
• Potential for better infrastructure/less transportation
• Moderate process conditions (2-5 atm and 100-160ºC)
• Potentially close to total use of the mineral resource
• Production of commercial by-products
• Mining with little waste, processing with less tailings
• Reduced CO2 footprint, (consumption of 0.5 ton of CO2 per ton of alumina)