Main Data

Bucket Capacity 380 ltrs
Monthly Throughput. 290,000 cu.m
Rated Bucket Speed 28 b.p.m.
Max. Dredging Depth 18.50 m
Hull Length 52.5 m
Hull Breadth 22.5 m
Hull Depth 3.3 m
Displacement 1800 t
Freedboard Loaded 1 m
Trommel Screen 2.75 m diameter
Dist. System 6 fold splitter
Primary Jigs 3 x 8 cell 7 m radial
Secondary Jigs 1 x 4 cell 7 m radial
Tertiary Jigs 1 x 2 cell 1.2 m x 1.1 m rect.
Gold Jig 1 x 2 cell 1.2 m x 1.1 m rect.
Test Jig 1 x 2 cell 1.1 m x 1.1 m rect.

Diamond Recovery Dredges

Designers: Alluvial Dredges


Andrade Gutierrez


Construction: Brazil Operation: Brazil

A.D.L. Diamond Recovery Dredges are designed to comply with the specific requirements of the client’s project. The onboard treatment plant is designed to maximise recovery efficiency in the radial and rectangular jig concentration circuits.

Bucket capacities can range from 85 to 1,000 litres maximum annual throughputs of 8,500,000 cubic metres when dredging to depths of 60 metres below the waterline.

Dredges can be supplied as turnkey projects or designed to maximise indigenous supply components if so required.

The A.D.L. designed dredge built in Brazil has a larger than normal primary jig bed area to ensure maximum recovery efficiency of diamonds in the 1mm to 19mm size range. Fine gold, which is also present in this property, is recovered by a separate jig circuit. 

Diamond Recovery Dredge Ghana Drawing