Title: Ceramic coatings for valves in HPAL and other mining applications

Ceramic coatings extend the in-service life of equipment by enhancing the corrosion and wear resistance of the base material. Because of this, they are often applied to protect metal-seated ball valves (MSBVs) used for tough chemical applications like turning rock into gold or nickel using processes such as hydrometallurgy. Ceramic coatings such as chrome oxide (Cr2O3) and titanium dioxide (TiO2) applied by thermal spray are frequently used in energy-efficient, highly-corrosive chemical processes including mining and ore extraction. Driven by the industry requirement for low total cost of ownership, lead engineering firms have been and continue to develop innovative solutions such as 1) a nanostructured TiO2 coating, and 2) a ceramic blend of TiO2 and Cr2O3. Most recent results indicate that an optimized balance between the hard and brittle Cr2O3phases and the soft and ductile n-TiO2 phases results in higher abrasion, sliding wear and galling resistance.

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Company  Product  Process  Other  Subjects  Event  Event  Date  Location  Publication  Publication  Date Text  Descriptor
  • Velan

  • Coating

  • Valve

  • Coating







  • Article