Joint venture bauxite mining and alumina operations in northwest Guinea historically provide about 80% of Guinea's foreign exchange. Bauxite is refined into alumina, which is later smelted into aluminium. The Compagnie des Bauxites de Guinea (CBG), which exports about 14 million tonnes of high-grade bauxite annually, is the main player in the bauxite industry. CBG is a joint venture, 49% owned by the Guinean Government and 51% by an international consortium known as Halco Mining Inc., a joint venture of Dadco Mining and Rio Tinto Alcan The Compagnie des Bauxites de Kindia (CBK), a joint venture between the Government of Guinea and Russki Alumina, produces some 2.5 million tonnes annually, nearly all of which is exported to Russia and Eastern Europe. Dian Dian, a Guinean/Ukrainian joint bauxite venture, has a projected production rate of 1,000,000 t (1,102,311 short tons; 984,207 long tons) per year, but is not expected to begin operations for several years. The Alumina Compagnie de Guinée (ACG), which took over the former Friguia Consortium, produced about 2.4 million tonnes in 2004 as raw material for its alumina refinery. The refinery exports about 750,000 tonnes of alumina. Both Global Alumina and Alcoa-Alcan have signed conventions with the Government of Guinea to build large alumina refineries with a combined capacity of about 4 million tonnes per year.Papua New Guinea Gold Mine Project Brief Introduction
The Lihir gold mine is on the island of Lihir, in Papua New Guinea's (PNG) New Ireland Province, about 700km north east of Port Moresby. The gold deposit is mined using conventional open-pit mining methods. Papua New Guinea milling process includes gold ore crushing, grinding, pyrite flotation and re-grinding of flotation concentrate.
In the gold ore crushing process, DSMAC offered gold ore crushers and screening equipment. PE series jaw crushers are used in the primary gold crushing stage and CS series CS cone crushers are adopted as secondary gold crushing equipment. Crushed gold are screened into different products through our vibrating screen. In the gold grinding process, you can choose our ball mills which are of higher efficiency and lower cost.