Panorama Press Releases

Press Releases

Hot pellet conveyors commissioned in Oman

The first investment project outside Brazil for Vale, the Brazilian mining concern, is now being commissioned in Oman.

The iron-ore pellet factory in the port of Sohar, Oman has a capacity to produce 10Mt of iron-ore pellets annually to supply the steel industry in the Middle East.

Four Aumund deep-drawn pan conveyors, drag chain conveyors and bucket-elevators convey the pellets around the plant. These were designed and assembled by Aumund’s Metallurgy Division for the specific requirements in Sohar and have now been successfully commissioned.

The deep-drawn pan conveyors have an axis distance of 64m and receive around 760t/h of hot pellets at up to 300°C from vibratory troughs. The conveyors are designed for a capacity of up to 1125t/h. At a conveyor speed of 0.24m/sec the pellets are conveyed to a grizzly feeder for further processing. Below the deep-drawn pan conveyors the drag chains run concurrently (axis distance 47m). They accept potential free-flowing material and thus permit almost maintenance-free operation.

In addition, two belt bucket-elevators or chain bucket-elevators with an axis distance of 23.5m and a conveying capacity of up to 800t/h are employed for iron ore transport. Both the chain bucket-elevators are employed for the transport of pellets with a size of up to 16mm and a temperature of up to 400° C. They have a conveying capacity of between 10 to 50t/h.

Similar recent projects were successfully commissioned in Bahrain (for the expansion of the GIIC pellet plant ) and in Iran, at Ardakan Pelletizing.

Aumund hot-material transport solutions are employed particularly where special emphasis is put on continuously high quality of the conveyed material. The conveyors from Rheinberg can convey solid material at a temperature of up to 1100°C. For cooling of hot material the company supplies cooling belts with air or evaporative cooling or a combination of the two.

Also in Mauretania, Aumund are supplying two arched-plate apron feeders, each with a conveying capacity of 6000t/h. They will be employed there for bunker unloading of iron-sinter, crushed and ground iron-ore as well as iron-ore pellets. Delivery is planned for June this year.

With their arched-shaped plates the apron feeders form a surface which makes cleaning possible with a scraper. The task of regulating unloading capacity is performed by a speed-controlled drive. The lighter versions of these feeders can be equipped with a weighing rail and frequency-controlled drive so as to be employed as a weigh-feeder.

Aumund Fördertechnik, Division Metallurgy