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Title: Bubble injected hydrocyclone flotation cell

Abstract

This patent describes an apparatus for selective separation of a mixture of hydrophobic and hydrophilic mineral particles. It comprises: a bubble-injected hydrocyclone flotation cell and a bubble slurry. The cell comprises an enclosed body section; a mineral pulp feed port; a bubble slurry feed port; and a vortex finder.

Inventors:
;
Publication Date:
OSTI Identifier:
5241021
Patent Number(s):
US 4971685; A
Application Number:
PPN: US 7-336168
Assignee:
Secretary of the Interior, Washington, DC (USA) NOV; NOV-91-015232; EDB-91-150095
Resource Type:
Patent
Resource Relation:
Patent File Date: 11 Apr 1989
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; CYCLONE SEPARATORS; DESIGN; MINERALS; FLOTATION; OPERATION; SLURRIES; CONCENTRATORS; DISPERSIONS; EQUIPMENT; INERTIAL SEPARATORS; MIXTURES; POLLUTION CONTROL EQUIPMENT; SEPARATION EQUIPMENT; SEPARATION PROCESSES; SUSPENSIONS; 010300* - Coal, Lignite, & Peat- Preparation- (1987-)

Citation Formats

Stanley, D.A., and Jordon, C.E. Bubble injected hydrocyclone flotation cell. United States: N. p., 1990. Web.
Stanley, D.A., & Jordon, C.E. Bubble injected hydrocyclone flotation cell. United States.
Stanley, D.A., and Jordon, C.E. 1990. "Bubble injected hydrocyclone flotation cell". United States. doi:.
@article{osti_5241021,
title = {Bubble injected hydrocyclone flotation cell},
author = {Stanley, D.A. and Jordon, C.E.},
abstractNote = {This patent describes an apparatus for selective separation of a mixture of hydrophobic and hydrophilic mineral particles. It comprises: a bubble-injected hydrocyclone flotation cell and a bubble slurry. The cell comprises an enclosed body section; a mineral pulp feed port; a bubble slurry feed port; and a vortex finder.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1990,
month =
}
  • This patent describes a system apparatus for automatically controlling the recovery of solids from a feed slurry passing into a froth flotation cell to which additives are supplied to separate the solids from impurities with the solids and impurities having different light reflective characteristics and the impurities passing from the floatation cell as tailings. It comprises: a flotation cell apparatus; a first means coacting with the feed slurry; a second means coacting with the feed slurry; the first and second detectors each have opaque barriers; and a third means coacting with the tailings.
  • A fuel cell system including a dry compressor for pressurizing air supplied to the cathode side of the fuel cell. An injector sprays a controlled amount of water on to the compressor's rotor(s) to improve the energy efficiency of the compressor. The amount of water sprayed out the rotor(s) is controlled relative to the mass flow rate of air inputted to the compressor.
  • The calculated potential energies of interaction between hydrophobic particle of three minerals (rhodochrosite, quartz and talc) and air bubble show that the energy of hydrophobic interaction is the dominant factor for their attachment. An attachment rate equation, integrating particle-bubble collision and adhesion by introducing a capture efficiency, has been put forward. It was found that the hydrophobic particle-bubble aggregates can not be disconnected in the bulk zone of flotation cell, whereas in the impeller zone the breakup may occur, particularly for the coarser particles captured by bubble. Finally, the flotation rate constant was estimated theoretically and verified by experiments.
  • A molten carbonate fuel cell matrix material is described made up of a matrix tape portion and a bubble barrier portion. The matrix tape portion comprises particles inert to molten carbonate electrolyte, ceramic particles and a polymeric binder, the matrix tape being flexible, pliable and having rubber-like compliance at room temperature. The bubble barrier is a solid material having fine porosity preferably being bonded to the matrix tape. In operation in a fuel cell, the polymer binder burns off leaving the matrix and bubble barrier providing superior sealing, stability and performance properties to the fuel cell stack.
  • A molten carbonate fuel cell matrix material is described made up of a matrix tape portion and a bubble barrier portion. The matrix tape portion comprises particles inert to molten carbonate electrolyte, ceramic particles and a polymeric binder, the matrix tape being flexible, pliable and having rubber-like compliance at room temperature. The bubble barrier is a solid material having fine porosity up to about 50% by volume, optionally being bonded to the matrix tape. In operation in a fuel cell, the polymer binder burns off leaving the matrix and bubble barrier providing superior sealing, stability and performance properties to themore » fuel cell stack.« less