CDE Global launch new Rotomax Logwasher

The new Rotomax RX150 logwasher has been launched by CDE Global offering increased levels of attrition to a range of materials as a result of a number of new design features.

The Rotomax logwasher was first introduced on washing projects within the quarrying and construction and demolition waste recycling sectors in 2003 and the completion of this latest product development program sees the introduction of the third generation Rotomax.

The Rotomax is a dual shaft system driven by a single motor, drive and gearbox which ensures lower ongoing maintenance costs, maximum attrition of materials within the system and easy synchronisation of the gears.

The most significant new development with the Rotomax RX150 relates to the construction and arrangement of the shafts and paddles within the unit. The paddles are constructed from high chrome cast iron. This is the same specification of material as used in impactor crushers and far exceeds the specification of paddles within other logwashers available on the global market.

"The specification of this high chrome cast iron for the Rotomax paddles ensures material within the system is subjected to the highest possible levels of attrition while also ensuring maximum resistance to abrasion" explains CDE Senior Design Engineer on the new Rotomax unit, Mr Kevin Vallelly. "Over the years we have conducted many tests on various materials and the high chrome cast iron also represents the lowest cost per ton processed. Other logwashers use a lower specification material for the paddles which leads to much higher wear, creating significant higher maintenance costs as they need to be replaced much more frequently."

Another design innovation within the new Rotomax system is the fan arrangement of the paddles on each of the shafts. Each paddle is off-set from the previous one and they are configured in such a way that the blades intermesh with each other as the shafts rotate.

According to CDE in addition to maximum attrition of the material within the system this also offers a new level of protection to the shafts, bearings and gearbox due to the subsequent reduction in intermittent shock loads.

"The fan arrangement of the paddles on the shafts ensures a consistent load on the bearings rather than intermittent high impact between all the paddles and the material being processed" says Mr Vallelly. "The new Rotomax has been built with the twin objectives of maximising attrition and minimising cost of ownership for operators requiring a system such as this."

The Rotomax RX150 has a capacity of 150 tons per hour and can be applied in the processing of a variety of material including sand and gravel, crushed rock, construction and demolition waste material and various mineral ores.

The new system is already operational on a number of projects including two construction and demolition waste recycling projects in England for Grundy & Co Excavations in Widnes and Jacksons in Preston. In addition to this the RX80 model has been successfully introduced to a project processing claybound waste from crushing processes at Gleeson Quarries in Ireland.

Two of the new Rotomax RX150 logwashers are also in operation on an iron ore washing project for Mineral Enterprise Ltd in Bangalore, India. The heavy attrition of the iron ore particles is effectively removing very plastic contamination from the surface of the iron ore, thus increasing the Fe value the direct result of which is greater efficiencies in the steel manufacturing process.

"The capacities of the two new Rotomax models are beyond question" says Mr Vallelly. "There are many systems out there whose claims regarding capacity have been proven to be greatly overstated in on-site trials resulting in problems with blockages during processing."

CDE will be displaying the new Rotomax RX150 logwasher on their stand at the upcoming International Mining Machinery Exhibition in Kolkata, India this November.

Further details of CDE's attendance at the show can be obtained by visiting their web site at www.cdeglobal.com or contacting the company by email at info@cdeglobal.com