A method for removing Low Temperature Fischer-Tropsch (LTFT) catalyst fines and/or organometallic catalyst compounds from LTFT wax, downstream from the LTFT reactor, which includes more than one stage, each having the steps of: causing a differential pressure across two or more filter elements in the form of a hollow cylinder with a porous filter surface or wall by feeding the wax mixture under pressure into a filter vessel with the hollow filter elements extending into the vessel, with the filtrate moving through the filter elements out of the vessel; causing high mechanical shearing and/ or centrifugal forces along and/ or away from the surface of the filter on the high pressure side of the filter to cause the particles to be continuously removed from the filter surface by rotating the filter elements at a high rpm relative to a generally stationary wax mixture and wherein each hollow filter element further includes a plurality of circular discs extending perpendicularly from the cylinder and being axially aligned with the cylinder with each disc being hollow with the hollow extending from the hollow of the cylinder and wherein, each vessel includes two or more rotating filter elements arranged such that the discs of adjacent filter elements overlap and wherein the spinning direction of the shafts are preferably in the same direction such that overlapping regions of filter elements move in opposite direction relative to each other to maximise shearing forces and turbulent flow; wherein the differential pressure is selected to be sufficient to force flow of the wax across the filter to cause filtration; and wherein the stages are arranged in series with the concentrated wax and catalyst mixture or retentate flowing downstream from one stage to another and finally from the last stage to a catalyst regeneration or processing unit. causing a differential pressure across two or more filter elements in the form of a hollow cylinder with a porous filter surface or wall by feeding the wax mixture under pressure into a filter vessel with the hollow filter elements extending into the vessel, with the filtrate moving through the filter elements out of the vessel; causing high mechanical shearing and/ or centrifugal forces along and/ or away from the surface of the filter on the high pressure side of the filter to cause the particles to be continuously removed from the filter surface by rotating the filter elements at a high rpm relative to a generally stationary wax mixture and wherein each hollow filter element further includes a plurality of circular discs extending perpendicularly from the cylinder and being axially aligned with the cylinder with each disc being hollow with the hollow extending from the hollow of the cylinder and wherein, each vessel includes two or more rotating filter elements arranged such that the discs of adjacent filter elements overlap and wherein the spinning direction of the shafts are preferably in the same direction such that overlapping regions of filter elements move in opposite direction relative to each other to maximise shearing forces and turbulent flow; wherein the differential pressure is selected to be sufficient to force flow of the wax across the filter to cause filtration; and wherein the stages are arranged in series with the concentrated wax and catalyst mixture or retentate flowing downstream from one stage to another and finally from the last stage to a catalyst regeneration or processing unit.