SCREEN ASSEMBLY, VIBRATORY SEPARATOR AND METHOD OF SCREENING

摘要

A screen assembly for a vibratory separator, the screen assembly comprising at least two ridge-valley series of screening material (14, 16) each of which comprises a plurality of alternating ridges (18) and valleys (20) of screening material, wherein at least one of the ridge-valley series of screening material (14) is offset from at least one other ridge-valley series of screening material (16). A screen comprising screening material (43) formed with ridges characterised in that said ridges are of at least two different sizes. A screen comprising screening material having a plurality of ridges and at least two sides, characterised in that said ridges are arranged at an acute angle to one of said sides. A screen comprising screening material having at least one elongate ridge and valley, characterised in that said ridge differs in shape therealong. Vibratory separators provided with a screen of the invention and methods of using same.