FLSMIDTH KNELSON CONCENTRATORS
FLSmidth Knelson Concentrators are the best gravity concentrators on the market, and are worth their weight in gold. Using centrifugal force and water injection processes, FLSmidth Knelson Concentrators create enhanced gravitational forces of up to 200 g’s to recover free gold, fine gold and any other precious metals or minerals with high specific gravities. As pioneers of the gravity concentration industry, FLSmidth Knelsons have been replicated and competed with since their inception. However, due to their superior design, lifespan and continuous R&D they have forever led the industry in both innovation and market share.
The original Batch Knelson Concentrators run for pre-defined cycle periods, after which the concentrate is harvested by means of an automated Centre-Discharge system. They are perfectly suited for the secure recovery of gravity recoverable gold (GRG) and other heavy metals and minerals from both alluvial and hard-rock plants.
Batch Knelsons are available with a variety of concentrating cone designs and with centrifugal fields of up to 200g, to provide wide choices to suit different site and machine feed conditions. Furthermore, concentrating cones are disposable wear parts, greatly reducing operating and stock-holding costs.
Continuous Variable Discharge (CVD) FLSmidth Knelson Concentrators deliver a continuous stream of concentrate by discharging the concentrate whilst simultaneously processing fresh feed. This makes the CVD model more suitable for situations where higher concentrate mass yield is desirable, including the recovery of minerals with high specific gravity such as as tantalum, cassiterite, chromite and iron ore; the pre-concentration of coarse sulphide minerals and the scavenging of tailings streams. In addition to this, the FLSmidth Knelson CVD affords all the benefits of the Batch models and more – secure hands-off operation, full automation, and 5 variables that can be instantly changed to adjust mass yield, grade and recovery.
Having worked with FLSmidth Knelson Concentrators for decades, we are able to advise our clients on exactly which models they need to suit their ore type, technical and financial needs.
Batch Knelson Concentrators
|Capacity (tph solids)||0.7||20||80/80||100/150/150||250/250||400/400||1000|
|Capacity (m3/hr slurry)||5.7||27||110/110||150/205/205||340/340||545/545||1360|
|Centrifugal field (g’s)||60||——————————————————-60-200——————————————————————–|
|Feed size (mm max)||4.7||———————————————————-6.0———————————————————————-|
|Feed size (mm recommended)||2||———————————————————-2.0———————————————————————-|
|Feed slurry density (% solids)||——————————————————————–0-75% solids by weight——————————————————–|
|Installed power (kW)||0.6||1.5||5.5||11||30||40||150|
|Installed mass (kg)||119||260||900/1045||1565/1725/1680||3980/3320||5680/5225||18460|
|Fluidising water (m3/hr)*||1.6-2.7||4-10||6-18||14-39||23-73||41-86||68-86|
|Concentrate mass (kg/purge)*||1.2-1.6||3-9||9-21||23-59||31-103||34-107||95-125|
|Recovery (%)||————————————————————-typically >90% of liberated metal————————————————–|
Continuous Variable Discharge (CVD) FLSmidth Knelson Concentrators
|Capacity (tph solids)||2||35||120||300|
|Capacity (m3/hr slurry)||4||75||250||635|
|Centrifugal field (g’s)||——————-30-90——————-|
|Feed size (mm max)*||——————-1.0——————-|
|Feed slurry density (% solids)||——————-0-75% solids by weight——————-|
|Installed power (kW)||1.5||11||30||75|
|Installed mass (kg)||230||2500||7000||18200|
|Fluidising water (m3/hr)*||1-2||3-9||11-23||9-27|
|Concentrate mass (%)||——————-0.5-50% of feed mass——————-|