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42

MODERN MINING

April 2016

COMPANIES

Tenova TAKRAF Africa has

consolidated operations in

these modern premises in

Spartan.

material flow test work to determine the flow

of solid material through chutes and into stor-

age vessels.

Commenting on the current business envi-

ronment, Späth says conditions are extremely

tight but notes that Tenova TAKRAF Africa

still has considerable forward momentum from

ongoing projects, one of them being Eskom’s

Kusile Power Station. “Our work at Kusile

comprises three separate materials handling

work packages covering the terrace handling

system, the stockyard handling system and the

limestone handling facility,” he states. “The

scope of the three packages is considerable and

includes 79 conveyors adding up to distance

of more than 16 km, as well as the supply and

installation of stackers, reclaimers and feeders.”

Other current contracts include a boiler

emissions abatement plant at Impala Platinum’s

Springs refinery – reportedly the first of its type

in Africa – and also a load out station for a coal

mine in Mozambique presently undergoing

commissioning. This is the second installation

of this type for the client and the order was

secured on the basis of the excellent perfor-

mance of the system supplied for the first phase

of the project. Tenova TAKRAF Africa’s rapid

rail loading systems feature a flask-loading

design and can load particulate material into

moving trains at rates of up to 8 000 t/h.

A recently completed project of which

Tenova TAKRAF Africa is particularly proud

is the materials handling portion of Sasol

Mining’s Tweedraai expansion near Secunda.

This involved the design and installation (on

an LSTK basis) of three conveyors totalling

3 km to convey coal at a rate of up to 4 800 t/h.

The system comprises a 1 000 m long incline

conveyor with a lift of 83 m, a 1 518 m over-

land conveyor with a lift of minus 9,3 m and

a 434 m tripper conveyor with a lift of 30,3 m.

The scope included the bulk earthworks and

civils foundations for the conveyors, as well as

the transfer towers and the E&I system.

Späth says that with the current dearth of

large-scale mining projects, the demand for

Tenova TAKRAF Africa’s ultra-heavy materials

handling equipment – bucket wheel excavators,

for example, or ship loading and unloading sys-

tems – is limited. “This market will return but

in the meantime we are putting additional focus

on the junior mining market, where there is still

a reasonable level of activity,” he observes. “We

have developed a number of solutions for the

juniors and are also offering some attractive

financing packages.”

One development Späth points to is an

ingenious modular overland conveyor consist-

ing of concrete modules precast at the project

site and fitted with idler frames and brackets.

The system – which reduces on-site work by

as much as 80 % and is also relocatable – is

easily and quickly installed after the conveyor

line has been surveyed, with only a prepared

terrace required and no concrete footings.

“The beauty of the system is not only its cost

effectiveness but also the fact that it can maxi-

mise local community involvement – which is