Ceramic Chute, Bin and Hopper Linings

The storage, conveyance, processing, separation and screening of abrasive bulk materials typically results in the need for regular patching and replacement of chutes and wear liners.

Saint-Gobain Performance Ceramics & Refractories’ pioneering Durafrax® material was employed in some of the first ceramic linings the late 1960s and early 1970s.

Durafrax® was first used as a lining material to handle abrasive bulk materials across a range of industries, rapidly becoming the industry standard for abrasive material handling.

Saint-Gobain Performance Ceramics & Refractories’ portfolio of materials – including the Durafrax®, Durastrike® and Corguard® lining systems – can help equipment withstand any type of wear, from erosion to heavy impact by dense abrasive materials.

Features and Benefits

Benefits
  • Extraordinary wear life versus metals, rubbers, plastics and rubber/ceramic composites
  • Smooth surface finish ensures minimal COF – ideal for sticky materials
  • No moisture absorption, helpful in avoiding material hang-ups
Application
  • Bins, hoppers and storage silos
  • Flop gates, head boxes and divertors
  • Skirt and bang boards
  • Chutes, transfer points, pantlegs and spoons
  • Weirs and rock boxes
Physical Properties
  Aluminum Oxide (Al2O3) Silicon Carbide (SiC) Zirconium Monolithic Castables
  Alpha Al2O3 Nitride Bonded SiC Reaction Bonded SiC Reaction Bonded SiC Sintered Alpha SiC Zirconia Toughned Alumina Fused Cast AZS Silicon Carbide
  Durafrax® Cryston® Cryston® TW Cast Refrax® 20 Refrax® 20 Norfrax® RB Silit® SKD HAMMERfrax® Hexoloy® Durastrike® ZTA ZAC - Corguard® Wearfrax® RS58
Properties                
Density, g/cm3 3,52 2,77 2,77 2,77 2,62 3,05 3 3,04 3,1 4,2 3,72 2,45
Porosity, % 0 8 <1 15 16 0 0 1 0 0 1.15 (Skin) -
Thermal Conductivity, W/m·K 18 16,3 23,7 13,8 16,3 125 35 125 125,6 - - -
Thermal Expansion, x10-6/°C 8,3 3,2 4,3 - 4,7 4,3 4,5 4,3 4,02 - -

-

Vickers Hardness, Gpa 9 23 11,6 - - 22 - 22 - - 19,6 -
Abrasion Resistance C704 1 1,6 1,5 1,9 2,5 0,7 0,7 0,7 0,4 0,6 1,1 8,2
Max Use Temp, °C 1,250 1,590 1,450 1,450

1,590

1,350 - 1,350 1,900 1,500 1,650 500
Abrasion Resistance
  Aluminum Oxide (Al2O3) Silicon Carbide (SiC) Zirconium Monolithic Castables
  Alpha Al2O3 Nitride Bonded SiC Reaction Bonded SiC Reaction Bonded SiC Sintered Alpha SiC Zirconia Toughned Alumina Fused Cast AZS Silicon Carbide
  Durafrax® Cryston® Cryston® TW Cast Refrax® 20 Refrax® 20 Norfrax® RB Silit® SKD HAMMERfrax® Hexoloy® Durastrike® ZTA ZAC - Corguard® Wearfrax® RS58
Sliding Abrasion +++ + ++ + + +++ +++ ++++ ++++ ++++ ++ +
Erosion +++ + + + + ++ ++ +++ ++++ ++++ ++ +
Impact + ++ + + + + + ++ + +++ +++ +
Corrosion Resistance ++ ++ ++ ++ ++ +++ +++ ++ ++++ ++ ++

+

Thermal Shock + + ++ ++ ++ ++ ++ ++ ++ ++ ++ ++
Thermal Insulation + ++ ++ ++ +++ + + + + + ++ ++
Electrical Insulation ++++ NA NA NA

NA

NA NA NA NA +++ ++ NA

FAQ

AR400 in chutes typically lasts around a year before requiring replacement – how does the service life of ceramics compare to this?

Ceramics have been found to perform 8-12 times better than AR400 in terms of chute service life, depending on the application.

How do ceramics perform against chrome carbide overlay in terms of wear-resistance?

Ceramics have been found to perform 3-5 times better than chrome carbide overlay in terms of wear resistance, depending on the application.

Will ceramics help reduce operational noise?

Yes. Ceramics can drastically reduce noise in chute work.

Documents

Brochures & Flyers
Wear Resistant Technologies - Brochure

Saint-Gobain’s Wear Resistance strength is in custom engineering shapes in their pre-fired state. Our objective is to improve the performance, efficiency

PDF | 453.43 KB
Wear-Resistant-Technoloies-brochure-Eng-web-202306