Specialist vibrating equipment supplier Joest has partnered with project house DRA in supplying screens and feeders to the Khumani iron-ore mine.
The company secured the supply of 23 linear motion-vibrating screens and 26 brute force feeders, used in the iron-ore beneficiation process. These units employ oil-splash lubricated geared
exciters and out-of-balance
motors, which are imported from the company’s licensor JöST, in Germany.
The applications include single-deck scalping and double-deck classification screens, with reverse slope dewatering. The units range from 0,9 m up to 3,66 m in width and 8,5m in length.
Being of a heavy duty design, the 2,44-m by 8,35-m scalping screen in particular, is capable of handling a peak tonnage of 3 000 t/h at 90% efficiency in fines removal.
The rubber panels were the preferred screen media for the production of the smaller-than- 80-mm product, for which the unit is declined at 10° to ensure performance.
The feeders range from 1 m to 3,8 m in width and from 2 m to 4,5 m in length with capacities of 250 t/h to 1 300 t/h. The high-sided units ensure spillage-free transit in the crusher and stockpile applications, while bunker loads and chute geometry were crucial to its design.
Joest sales manager for capital equipment Val Korzynski says that the contract further complements its large installation base in the Northern Cape’s manganese and iron-ore operations, which include Kumba Iron Ore’s Sishen expansion project incorporating 73 screens and nine feeders.
The after-market service is supported by the company’s field service representative based in Kuruman, in the Northern Cape.
Situated in Spartan, Kempton Park, the company is licensed to JöST, for the manufacture and distribution of vibration technology throughout sub- Saharan Africa.
The company has the ability to design and customise equipment to suit various industries. As a result of its licensing agreement with Jöst, the company has unlimited access to advanced finite element analysis that can be applied by the Jöst office to any designs in order to improve or enhance performance in the field.
Jöst is the largest vibrating equipment manufacturer in Europe and encompasses a team of specialist engineers to assist with local operations when required.