Twelve Belt Feeders to Convey Filter Cake

Twelve Belt Feeders to Convey Filter Cake
A major producer of alumina in WA decided to embark upon a program of reclaiming material from their red mud tailing ponds.

The Scope

The decision to do so was driven by environmental factors plus valuable residual material that could be recovered from the previous waste material.

Stage 1 took place at a facility close to Perth and involved the construction of a new filtration facility coupled with a new stockyard for the recovered material prior to it being shipped for further processing.

A filtration hall was built containing 6 large plate type filter presses designed to reduce the moisture in the resultant cake to 30% or less. The material is pumped into the filter presses as a slurry with the moisture then being squeezed out of the slurry in a series of plate membranes. Once the initial process is complete the resulting ‘cakes’ of solid material are discharged one by one as the system retracts.

Stage 2 took place at a second plant in the southwest of WA and essentially repeated the plant initially installed closer to Perth.

The Solution

For both Stages 1 & 2, cakes each approximately 2m x 2m and weighing 285kg, fall from the filter presses as they open up onto 6 Transmin heavy duty belt feeders each 2.4m wide and approximately 25m long. Each of the belt feeders discharges the material onto a yard conveyor and then to a stacker belt for storage prior to shipment or re-processing.

The Transmin belt feeders incorporate a specially designed ‘cake breaker’ device at the point of discharge to ensure no material exits the belt feeders larger than 75mm. It is important to have a consistent sizing to the recovered material, which is achieved by the cake breakers. When the cakes fall from the filters initially they may not break up sufficiently simply due to gravity, so need assistance from the cake breakers.

The client specified that each feeder should be capable of being reversed under a fully loaded condition to enable off-spec material to be discharged at the back end. This was achieved by Transmin’s engineers due to extensive experience and knowledge of such systems built up over 30 years.

Transmin has been supplying belt feeders for many applications globally which means its experience can be applied to many applications throughout the mining and minerals processing industries with confidence. All Transmin feeder designs are heavy-duty to operate under heavy workloads and are fitted with the ConveyorPro range of high-quality components including pulleys, belts, idlers and rollers, load supports, and a range of sensors and material analysis systems.

Key Features

Head Enclosures
Fully enclosed for safety and dust control, with access doors and mounting points for belt cleaners.

Compact, shaft mounted drives with either planetary helical bevel combinations or hydraulic units.

Take Up
Manual screw or semi-automatic belt tensioning systems as standard.

To Australian standards and easily removable in manageable sections.

Various widths to suit most applications, with belt widths up to 3.0m.

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Transmin is a world-class provider of innovative engineered equipment, supplies and services to the mining-resources and bulk materials handling industries. Established in Perth, Western Australia in 1987, Transmin sets the standard for mechanical equipment design and application, led by our specialist Engineering division and backed by our dedicated ...