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1. (WO2018104576) SPARGER DEVICE FOR SPARGING A FLUID INTO A SLURRY TANK, FLOTATION APPARATUS AND SYSTEM HAVING SUCH SPARGER DEVICE, AND METHOD FOR SETTING CONTROL FLUID PRESSURE OF A SPARGER DEVICE

Pub. No.:    WO/2018/104576    International Application No.:    PCT/FI2016/050860
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 10 00:59:59 CET 2016
IPC: B03D 1/24
F16K 31/122
B01J 4/00
B01F 15/02
C02F 1/24
Applicants: OUTOTEC (FINLAND) OY
Inventors: NEPOMUCENO DO VALLE, Thiago Antonio
Title: SPARGER DEVICE FOR SPARGING A FLUID INTO A SLURRY TANK, FLOTATION APPARATUS AND SYSTEM HAVING SUCH SPARGER DEVICE, AND METHOD FOR SETTING CONTROL FLUID PRESSURE OF A SPARGER DEVICE
Abstract:
A sparger device (1) for sparging fluid into a slurry tank (10), said sparger device (1) comprising a hollow elongated body (2) having a nozzle opening (2a) for sparging a sparging fluid flow to a slurry tank (10). The device further comprises a needle (3) for opening and closing the nozzle opening (2a), and a control device (4) being arranged to actuate the needle (3). The control device (4) comprises a control chamber (5) partitioned into a first portion (5a) and second portion (5b) such that a pressure differential between the first portion (5a) and the second portion (5b) closes or opens the nozzle opening (2a). The second portion (5b) may be provided with a control fluid pressure preventing slurry backflow from the slurry tank (10). A flotation apparatus comprising a sparger device and a flotation system comprising a flotation apparatus are also discussed.