2952 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
virtually eliminated. Most columns now use these cavita-
tion aerators.
JAMESON CELL
The Jameson cell was invented at the University of Newcastle
(Australia) and developed in conjunction with Mount Isa
Mines Limited. It was initially developed as a lower-cost
alternative to conventional columns, for recovering fine
particles, and was first used in the Mount Isa concentrator
in 1988 (Jameson 1988). In contrast to most types of flo-
tation machines, the feed and the air to the Jameson cell
are introduced in a combined stream through one or more
cylindrical columns called downcomers.
The Jameson cell produces high flotation rates, espe-
cially for very fine particles. Fast flotation of liberated par-
ticles produces a high-grade concentrate, often in a single
stage of flotation. The cell’s high carrying capacity is partic-
ularly beneficial when high yields are required, for example,
in recleaning in metals flotation and in the flotation of met-
allurgical coal. Tailings exit through a hole in the bottom
of the tank. The cell has no moving parts and requires no
sparging system, so energy and operating costs are lower
than for other, comparable machines (Jameson et al. 1988).
Changes to the original design have been made period-
ically. The Mark II model allowed higher throughput the
Mark III model had changes in downcomer design for eas-
ier cleaning and unblocking and increased slurry flow the
Mark IV model made additional changes in downcomer
design for easier assembly and maintenance. Jameson cells
are shown in Figure 8. They are now marketed by Glencore
Technologies, and are available in circular and rectangular
configurations.
Jameson cells have found widest use in recovery of fine
coal. They are also used in base metal processing to recover
fast-floating particles quickly, after which slower-floating
particles are recovered in conventional cells. Jameson cells
have replaced columns in many flowsheets, and are used
in cleaner and rougher circuits in some copper flowsheets.
IMHOFLOT CELL
The Imhoflot pneumatic flotation technology began with
research in Germany in the 1950s (Imhof 1988). Imhoflot
machines are currently offered by Maelgwyn Mineral
Services Limited (MMS) in the UK. The technology incor-
porates self-aspirating, ceramic aerators based on multi-jet
venturi principles, and operating at about 2.5 bar gauge
pressure (Imhof 2000). This provides a highly dispersed
Figure 8. Jameson Cells (Wikiwand 2024)
virtually eliminated. Most columns now use these cavita-
tion aerators.
JAMESON CELL
The Jameson cell was invented at the University of Newcastle
(Australia) and developed in conjunction with Mount Isa
Mines Limited. It was initially developed as a lower-cost
alternative to conventional columns, for recovering fine
particles, and was first used in the Mount Isa concentrator
in 1988 (Jameson 1988). In contrast to most types of flo-
tation machines, the feed and the air to the Jameson cell
are introduced in a combined stream through one or more
cylindrical columns called downcomers.
The Jameson cell produces high flotation rates, espe-
cially for very fine particles. Fast flotation of liberated par-
ticles produces a high-grade concentrate, often in a single
stage of flotation. The cell’s high carrying capacity is partic-
ularly beneficial when high yields are required, for example,
in recleaning in metals flotation and in the flotation of met-
allurgical coal. Tailings exit through a hole in the bottom
of the tank. The cell has no moving parts and requires no
sparging system, so energy and operating costs are lower
than for other, comparable machines (Jameson et al. 1988).
Changes to the original design have been made period-
ically. The Mark II model allowed higher throughput the
Mark III model had changes in downcomer design for eas-
ier cleaning and unblocking and increased slurry flow the
Mark IV model made additional changes in downcomer
design for easier assembly and maintenance. Jameson cells
are shown in Figure 8. They are now marketed by Glencore
Technologies, and are available in circular and rectangular
configurations.
Jameson cells have found widest use in recovery of fine
coal. They are also used in base metal processing to recover
fast-floating particles quickly, after which slower-floating
particles are recovered in conventional cells. Jameson cells
have replaced columns in many flowsheets, and are used
in cleaner and rougher circuits in some copper flowsheets.
IMHOFLOT CELL
The Imhoflot pneumatic flotation technology began with
research in Germany in the 1950s (Imhof 1988). Imhoflot
machines are currently offered by Maelgwyn Mineral
Services Limited (MMS) in the UK. The technology incor-
porates self-aspirating, ceramic aerators based on multi-jet
venturi principles, and operating at about 2.5 bar gauge
pressure (Imhof 2000). This provides a highly dispersed
Figure 8. Jameson Cells (Wikiwand 2024)