for SERIOUS MINERS who require heavy duty solutions.....
RMS-Ross Circular Jigs
also known as mineral jigs, are one of the most widely applied gravity
concentrating devices used in the world. They are widely used as
concentrators for recovery of tin, diamonds and gold.
The development of the circular jigs for tin in the 1960's has led to
the development of one of the most significant advances in modern high
capacity gravity concentration equipment.
RMS-ROSS CORPORATION has taken the concept of the circular jig and
redesigned all elements to produce one of the most efficient, high
capacity jigs available in the world today.
- Reliable and cost effective
- High capacity and surge resistant
- Excellent recovery
- Electronic frequency control
- Easy stroke adjustment
- Greater particulate retention time
In conventional square jigs, the feed accelerates toward the
discharge. However, in circular jigs the feed decelerates as it
approaches the discharge because the cross sectional area of the flow
channel increases dramatically as the feed approaches the discharge.
Therefore the particulate retention time is substantially longer in the
RMS-Ross CIRCULAR JIG compared to any traditional jig, enhancing the
capture of fine gold.
The primary function of the RMS Circular Jigs is stratification and the secondary function is the separation
of the stratified layers into two discrete products - tailings and
concentrate. The stratification and separation are affected by the jig cycle.
jig cycle consists of an upstroke, or 'propulsion stroke', and a
downstroke, or 'suction stroke'. The upstroke results in the creation of
a very 'soft' bed (dilation) where the lighter particles are lifted
into the tailings stream and the heavier particles can readily sink and
be sucked through the screen in the downstroke or the suction stroke.
The inflow of water is restricted to the downstroke so that the suction
in the bed can be modified to suit the highly variable conditions on
jigs are more efficient than trapezoidal or square configurations where
interference patterns result in zones of pulse disruption, negatively
affecting feed flow. Whereas pulsations occurring in a concentric round
chamber, working at a tuned frequency, will give rise to balanced nodal
pulse patterns providing even vertical sorting of the jig bed.
Therefore, the RMS Circular Jigs are more efficient by inherent physical
The RMS Circular Jig has a simple harmonic motion cycle where the up
and down strokes are of equal duration and intensity, but both length of
stroke and frequency are independent and easily adjustable.
The same is true of hutch water; there are individual tanks and
adequate valving for absolute control of water pressure. The higher the
hutch water pressure, the less the suction, the higher the grade of
concentrate. Inversely, the lower the hutch water pressure, the greater
the suction, resulting in more concentrate but lesser grade.
|Description||Jig Bed Diameter (ft)|
|Area of Bed (sq. ft)||7||28.3||63.6|
|Feed Rate per cell (cy/hr)||10||42||95|
|Feed Rate per cell (TPH)||15||63||143|
|Lip Length (ft)||9.4||18.8||28.3|
|Hutch Water Consumption (gal)||30||90+||300+|