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
- 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
- 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
| 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 |
| 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.
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