CASE STUDY - Whitepages...Case Study 1 - Conversion of a CrMo Steel Discharge Cone to a Bullnose®...
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Bullnose ® Discharge Cone CASE STUDY ©2014 BRADKEN ® Case Study_Bullnose Discharge Cone Date: 14/07/14 bradken.com The Challenge: Address high Wear Zones in Grinding Mill Discharge Cones In SAG and AG milling there are three main high wear zones in a standard discharge cone: 1. The nose and main vane 2. The pulp vane (bi-directional wear) 3. The centre deflection ring or nose cone ^Nose and main vane ^Vertical vane ^Centre deflection ring The Solution: Develop a Design to Mitigate High Wear Zones Bradken undertook substantial design analysis of the requirements of the pulp cavities (the dimensional cross sectional areas) of inservice discharge cones. This included both the nose discharge area and wear material thickness of both the vane and nose. This analysis resulted in the design of the Bullnose ® discharge cone. Attributes of the Bradken Bullnose ® discharge cone design include: • Adaptability - can be custom designed for your mill • Composite wear materials: • Cast White Iron nose cone and vanes for maximum wear life • Rubber top and bottom plates in low wear zones for overall weight reduction • Bolting and casting clamping ring • Maximum throat discharge cross sectional area • ‘Key’ system for quick and easy installation during relines requiring no surrounding mating parts to be removed BULLNOSE ® A newly installed Bullnose ® Discharge cone Bullnose ® model
Transcript of CASE STUDY - Whitepages...Case Study 1 - Conversion of a CrMo Steel Discharge Cone to a Bullnose®...
Bullnose® Discharge Cone
CASE STUDY
©2014 BRADKEN® Case Study_Bullnose Discharge Cone Date: 14/07/14 bradken.com
The Challenge: Address high Wear Zones in Grinding Mill Discharge ConesIn SAG and AG milling there are three main high wear zones in a standard discharge cone:
1. The nose and main vane2. The pulp vane (bi-directional wear)3. The centre deflection ring or nose cone
^Nose and main vane ^Vertical vane ^Centre deflection ring
The Solution: Develop a Design to Mitigate High Wear ZonesBradken undertook substantial design analysis of the requirements of the pulp cavities (the dimensional cross sectional areas) of inservice discharge cones. This included both the nose discharge area and wear material thickness of both the vane and nose. This analysis resulted in the design of the Bullnose® discharge cone.
Attributes of the Bradken Bullnose® discharge cone design include: • Adaptability - can be custom designed for your mill • Composite wear materials:
• Cast White Iron nose cone and vanes for maximum wear life • Rubber top and bottom plates in low wear zones for overall weight reduction
• Bolting and casting clamping ring • Maximum throat discharge cross sectional area • ‘Key’ system for quick and easy installation during relines requiring no surrounding mating parts to be removed
BULLNOSE®
A newly installed Bullnose® Discharge cone
Bullnose® model
©2014 BRADKEN® Case Study_Bullnose Discharge Cone Date: 11/07/14 bradken.com
Outcomes: • Life extension of 113% over the previous discharge cone • Mill liner mass reduction of 41% • Elimination of one reline cycle per year due to longer life of Bullnose • Increase of 95% on tonnes milled over the previous discharge cone, nearly double the tonnage throughput
using Bullnose®
Case Study 1 - Conversion of a CrMo Steel Discharge Cone to a Bullnose® 32ft x 16ft SAG (hard rock)
Tonnes (MT)
5.1
11.0
9.9
Tonnes Throughput (MT)
CrMo Bullnose Bullnose
Days
322
694 685
Life of Discharge Cone (in Days)
CrMo Bullnose Bullnose
CrMo Bu
lln
ose
A
Bu
lln
ose
B
Bu
lln
ose
A
Bu
lln
ose
B
CrMo Discharge Cone after 5 mths
Bullnose Discharge Cone after 5.5 mths. Remained in service for 22.5 mths.
Case Study 2 - Conversion of a Rubber Discharge Cone to a Bullnose® 38ft x 23ft SAG (hard rock)
Outcomes: • Life extension of 170% over rubber discharge cones • Elimination of 2 reline cycles per year due to longer life of Bullnose • Increase of 165% on tonnes milled over the previous discharge cone
Days
304241
821
Life of Discharge Cone (in Days)
Rubber Rubber Bullnose
Tonnes (MT)
11.38.9
29.9
Tonnes Throughput (MT)
Rubber Rubber Bullnose
Bu
lln
ose
Bu
lln
ose
CrMo
Rubber RubberRubber Rubber
Rubber Discharge Cone
after 10 mths
Bullnose Discharge Cone
after 9 mths. Remained in
service for 27 mths.
For more information and to find your local representative visit bradken.com
