Özet
Because of increasing production of fine coal during mining over the past century and because of inefficient fine-coal recovery technologies, a vast reserve of high-quality coal now exists in refuse ponds. A novel fine-coal circuit, consisting of a hindered-bed classifier, an enhanced gravity concentrator and a flotation column, was evaluated for the recovery of fine coal from refuse ponds. The treatment of a pond derived from Pittsburgh No. 8 seam coal resulted in the production of a premium fuel containing less than 5% ash and a calorific value of about 30,170 kJ/kg with 60% mass yield. Results from the treatment of two refuse pond materials are presented in this paper.
Orijinal dil | İngilizce |
---|---|
Sayfa (başlangıç-bitiş) | 177-183 |
Sayfa sayısı | 7 |
Dergi | Minerals and Metallurgical Processing |
Hacim | 18 |
Basın numarası | 4 |
DOI'lar | |
Yayın durumu | Yayınlandı - Kas 2001 |
Harici olarak yayınlandı | Evet |