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Diagram showing the
operating principle of a
two chamber APIC jig.
A pilot scale APIC jig.
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APIC jig - leading jigging technology
The APIC jig is an air-pulsed gravity separator able to treat mineral
and metal particles up to 80 mm in size, depending on density, and coal
up to 150 mm. This significant advance in the capability of jigging
method to separate particles of different densities is the result of
a joint development by TITACO (a BATEMAN subsidiary) and MINTEK
Jigs apply continuous pulses to homogenous suspension of particles as
a result of which the more dense particles tend to sink to the bottom
of the bed and the less dense particles rise to the top, permitting
the separation of the density fractions. The pulses of standard jigs
are formed either by rubber diaphragms or by the whole jig bed being
moved up or down within a filled container to produce a sinusoidal pattern
which is capable of separating particles between 0,6 and 10 mm in size.
In the APIC jig, air chambers are fitted under the bed. Alternate inlet
and exhaust of the air in these chambers induces pulses through the
suspended bed of particles. This system has two main advantages over
the previous system. The first is that the pulses have sufficient energy
to raise large dense particles. The second is that airflow through the
chamber can be computer controlled to produce specific pulse patterns.
This control permits a greater variety of operating conditions, which
can be adjusted to separate more difficult feed materials efficiently.
The discharge mechanisms of the jig permit a smooth and accurate evacuation
of sinks (dense particles) and floats (less dense particles). These
mechanisms - and the pulse pattern required - are custom designed to
maximize performance for each application. The number of discharge gates
per jig is dependent on the number of products to be produced (metal,
middlings, etc.).
APIC jigs can be used for coal washing, recovery of ferro-alloys from
slag, upgrading metalic ores (e.g. Cr, Mn, Fe, Pt) and non metalics
(e.g. diamonds, garnet, corundum) and for washing of wastes.
The capacity of an APIC jig can be increased simply by increasing the
width of the bed, while the number of compartments are selected according
to the required separation efficiency. With widths of between 0,5 and
4 m, the jigs
20 t/h to 400 t/h and produce product size ranges of 0,1 mm
to 50 mm with recoveries of better than 95 % for the coarse material.
Coal washing and ore upgrading jigs with widths of 1 m to 7 m handle
feeds of 50 t/h to 800 t/h and product sizes from 0,2 mm to
150 mm.
For more information, please contact Vincent Dieudonné, General
Manager, Jigging, on +27-11-899-2343 or email jigging@batemanengineering.com.
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