Community Research and Development Information Service - CORDIS


Carbosulcis S.p.A. has carried out nine tests of industrial flotation of the Sulcis sub-bituminous coal with deslimed feed. The technical results of the tests were very positive, having obtained a concentration index of about 0.55 with a consumption of reagents five times lower than the values registered in the laboratory with feed that had not been deslimed. Considering the physical-chemical characteristics of the Carbosulcis standard raw coal and the planned production of 2,600,000 t/y ROM, a recovery of washed coal in the flotation section equal to about 37,000 t can be calculated, but of a lower quality than the production target. As the quality of the coal is lower than the contractual specifications, it is necessary to produce coarse coal having a higher calorific value, with consequent loss of yield. It is therefore deemed unjustifiable from an economic point of view to build a flotation section into the new preparation plant.

Additional information

Authors: CARBOSULCIS, Miniera di Nuraxi Figus, Cortoghiana (IT)
Bibliographic Reference: EUR 14151 IT (1992) 41 pp., MF, ECU 4, blow-up copy ECU 7.50
Availability: (2)
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