To facilitate fines crushing of manganese and oxide zinc ore at
Sable Zinc Kabwe Limited in Zambia, minerals processing spcialist
IMS Engineering recently supplied the operation with a Haze-mag
hammer mill.
The Hazemag Unirotor 650/500 single-rotor hammer mill, delivered in
September, and installed in October, replaces an older hammer mill
at the manganese and oxide-zinc-ore processing plant.
As with its predecessor, it will serve at the final stage of
crushing to produce fine material suitable for leaching.
IMS Engineering marketing man- ager Shannon McEwan explains that
the hammer mill will be fed atelectric circuit mobile crusher two tons an hour, reducing –25
mm feed to a high percentage passing –3 mm.
The Hazemag Unirotor hammer mill operates on the principle of
retention grinding by the action of a high-speed rotor with
free-swinging hammers, which impact crushes and grinds material
over impact beams and discharge grids locatelibya gypsum process equipmentd in the housing
surrounding the rotor, to produce a very fine product.
In addition to building and supplying the hammer mill in the format
to meet the production requirements at Sable Zinc, IMS Engineering
has supplied it mounted on a base frame, complete with the drive
and fitted with a manual Vogel centralised grease-lubricatiogrinding ball size formulan
system. Although the hammer mill for Sable Zinc is a small unit,
fitting a centralised lubrication system reduces the chances of
over- or under-greasing and ensures that all points that require
lubrication, in this case bearings and labyrinth seals, are greased
in the right proportion with the correct quantity per dose, and
from one central point.
lead zinc ore mining equipment in nigeria
“Many of our customers opt for Vogel centralised-lubrication
systems on their machines; it is the most effective way to maintain
and optimise lubrication on this type of equipment, especially when
automated,” McEwan notes.
To reassure themselves of their decision to use Hazemag
materials-processing equjaw crusher stone made americanipment supplied by IMS Engineering, the
Sable Zinc process engineering team visited another IMS Engineering
customer in Zambia, namely JV Civils. This company is contracted to
Mopani Copper Mines to run some on-site crushing operations and is
successfully running several Haze-mag impact crushers at the
group’s Mufulira Mine Malachite and East Ore crushing
operations. In addition to supplying Hazemag hammer mills to Sable
Zinc, IMS Engineering has, in recent months, supplied hammer mills
to PPC Lime, in Danielskuil, and Henning Crushers, in
Namibia.
“These models supplied recently by IMS Engineering are small
in comparison to the models that Haze-mag has to offer. Hazemag
manufactures hammer mills that in some applications can process up
to 175 t/h and receive feed of up to 200 mm,” says
McEwan.
Hazemag hammer mills are suited to processing medium to low
abrasive materials where high reductions are required to produce
fine products. To help ensure that the Hazemag hammer mills
supplied by IMS Engineering are suitably configured for its
customers in Southern Africa, IMS Engineering operates one of these
machines at its test plant. This test facility helps to ensure an
understanding of the grinding characteristics of a material and
assists with predicting the performance of the machines and
determining the correct equipment selection.