Patent ID: 6073775
Filing Date: 2000-06-13
Classification: B03B,B03D,B04C

Abstract:
A cyclonic static micro-bubble floatation apparatus, comprising:a column separator; anda foam collecting device and a feed distribution device both installed at the upper portion of the column separator;the said column separator includes a column and packing media within it; the column comprises an upper shell, a lower shell, a horn shaped linking section connecting with the upper shell and the lower shell, and a bottom plate;the said foam collecting device includes a foam collecting tank, a foam storage tank and at least one linking and supporting pipe between the two tanks;the said feed distribution device includes a feed distribution tank and at least one feed pipe connecting with the column separator, the feed distribution tank is installed at the upper portion of the column separator;two kinds of fillers are used for the said packing media of the column separator, wherein corrugated plate fillers used in the upper space above the feed pipe and tray plate fillers of at least one layer used in the lower space under the feed pipe, and on the tray plate fillers have at least two regions with different operture sizes and opening factors, which are disposed in the way of alternating arrangement;the floatation apparatus further comprises a cyclonic separation device provided on the bottom plate; the said cyclonic separation device includes a cylindrical cyclonic shell and a horn shaped section fixed on the upper of the cyclonic shell; the inside of the horn shaped section forms a passage connecting the cyclonic separation device with the column separator, and the circular section between its outside and the inner wall of the lower shell forms an entrance of a discharge passage M-2;a hole is provided at the center of the bottom plate, and a cyclonic reverse cone is installed on the bottom plate to divide the said hole into two discharge passages, a lower density material discharge passage M-1 and a higher density material discharge passage T; on the inner wall of the cyclonic shell at least one spiral leading plate is provided;on the outside of the lower shell a jet pipe floatation device is provided, which includes a circulating pulp distribution tank, at least one auto-suction micro-bubble generator and at least one mineralization pipe segment connected with the said generator; the circulating pulp distribution tank is installed at the upper-middle portion of the outside of the lower shell; the upper ends of the auto-suction micro-bubble generator and the mineralization pipe segment are connected with the circulating pulp distribution tank, and the lower ends are horizontally passed through the lower shell and tangentially connected with the cylindrical cyclonic shell; an air pipe of the auto-suction micro-bubble generator is connected with a leading pipe lengthened to the upper end of the column separator, forming the air suction passage G; two discharge passages M-1 and M-2 are connected with the circulating pulp distribution tank of the jet pipe floatation device, and the outlet of the jet pipe floatation device is tangentially connected with the cyclonic separation device, forming the circulating passage of middlings' pipe floatation.