Cake detection device

Feed Mechanism. A cake detection device, pneumatic in some designs, activates the feed valve closure when the desired cake depth is reached. This cake depth is monitored by a proximity switch. This device can also act as a cake distributor to level the load during feeding. Alternative feed designs are available depending upon the vendor. 

The KDF filter was first tested in prototype on a coal mine in northern Germany. It was installed in parallel with existing vacuum filters and it produced filter cakes consistendy lower in moisture content by 5 to 7% than the vacuum filters. Two production models have been installed and operated on a coal mine in Belgium. The filter is controlled by a specially developed computer system this consists of two computers, one monitoring the function of the filter and all of the detection devices installed, and the other controlling the filtration process. The system allows optimization of the performance, automatic start-up or shut-down, and can be integrated into the control system of the whole coal washing plant. 

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