Studies on pinched sluice concentration. Part 1: The effects of operating variables and sluice geometry on the performance of pinched sluices

Recovery of Ultra-Fine Tungsten and Tin from Slimes Using Large-Scale SLon-2400 Centrifugal Separator

“…It was reported that 30-40% of Chinese tungsten and tin were practically lost in slimes and tailings, and they were not effectively recovered. In practice, the efficiency for recovering such ultra-fine values, especially for those with particle size below 20 µm, would be very low even unpractical [4][5][6]. Enhanced gravity separation, i.e., centrifugal separation, has provided a potential method for the recovery of such ultra-fine heavy minerals [7][8][9][10].…”

A wet belt permanent high gradient magnetic separator for purification of non-metallic ores

“…As the length is increased, more sufficient separation time is available for particles to be separated, and the capture probability of magnetic force to the particles is greatly improved. From Fig.2, the iron removal rate and Fe 2 O 3 grade approach the maximum and minimum, respectively, after the magnet length with 5°inclination angle is increased to 0.9 m. For the magnet of 8°inclination angle, the lowest Fe 2 O 3 grade is not observed even the magnet length is increased to the maximum of 1.0 m in the pilot-scale separator; this is due to the fact that particles are subjected to a stronger hydrodynamic resistance in an inclined slurry flow of larger inclination angle (Ergün and Ersayin, 2002).…”

Experimental study on performance of a continuous centrifugal concentrator in reconcentrating fine hematite

“…SLon-400 × 300 pilot continuous centrifugal concentrator: 1 = reciprocating mechanism, 2 = high pressure water sprays, 3 = concentrate collecting box, 4 = guard, 5 = drum, 6 = tailings discharging channel. separation performance (Ergün and Ersayin, 2002a). Upgrade ratio (UGR) and separation efficiency (E) were calculated using the following equations:…”

“…The use of centrifugal concentration has been resurging worldwide in recent decades. The renewed interest in centrifugal concentration resulted from the recognition of the benefits of low cost, simple operation and high efficiency of centrifugal separation on one hand (Burt, 1999;Richards and Palmer, 1997), and from the increasingly stringent environmental protection requirements on the other hand (Ergün and Ersayin, 2002a). Centrifugal separation was found to be useful in satisfying these requirements (Chen et al, 2006;Chernet et al, 1999;Coulter and Subasinghe, 2005;Honaker et al, 1996Honaker et al, , 2000Liu et al, 2006).…”