Observations of the flow indicate that self clearance does not occur within the range of inclinations tested to any significant level over the vertical orientation. It would appear to have retained a high level of federate linearity with a doubling of rotation speed providing essentially a doubling of the mass flow rate for any of the tested inclinations.
When the feed chamber ‘runs dry’ the material within the elevator column essentially ceases transport and forms a plug of material within the column. This plug we expect to