Devcon Maintenance and Repair Solutions - Sintemar

Field Application Reports
Products:
Application Date:
Customer:
Industry:
Location 21
Ball Mill In-feed Shell /
Head Repair
Plastic Steel® B Liquid
2/5/94
Newmont Gold
Mining
Problem:
The mating area between the ball mill shell and the head would receive extreme wear from an abrasive
slurry washout. The wear was so severe that the metal was worn in excess of 1/8” deep.
Solution:
The complete repair area was roughened using a grinder and wire wheel attachment. Following
roughening the complete area was chemically cleaned using Cleaner Blend 300. Eight holes were drill
equally spaced around the diameter of the mating area. The mating area void was then sealed from the
outside using PorRok. Sealing the mating area void eliminated any migration or flowing of Plastic Steel
Liquid. Plastic Steel Liquid was then mixed using a drill and mixing tool. Following mixing, Plastic Steel
Liquid was poured into the mating area void using a funnel. The funnel improved flow rate. Pouring
started at the lowest point injection holes. A steel plate was welded over the holes when the Plastic steel
would reach the hole. This process continued until the void was completely filled. Replacement of the
Mill Head was estimated at $160K. Devcon cost of repair was only $10K!