Mono-T-9 Issue
(Replace with AP Green "Super G 3000 Heat Set Plastic")
One major problem area for my book is when I published it in late 1998, Mono-T-9 was manufactured by National Refractories. But today Mono-T-9 is no longer being produced. The producer of Mono-T-9, NATIONAL REFRACTORIES CORP., went out of business. That is the end result of the litigation against the asbestos producers. So this has produced a huge gap in the refractories industries. All the deep pockets were searched and emptied. So to find good refractories today is much more of a chalange. But there are still a good number of refractory companies that make ram plastics. Here is what you are looking for, a product that has these qualities:
Facts about Mono-T-9 HS
(Super Duty Plastic Refractory, Heat Setting):
| Recommended Service Temperature |
3100†F |
| Workability Index |
25-35% |
| Material required per cubic foot |
145-150 lb/cu. ft. |
| Packaging |
100 lb ctn |
CHEMICAL ANALYSIS (IGNITED) |
| Al2O3 |
46.1% |
| SiO2 |
49.4% |
| Fe2O3 |
1.5% |
| TiO2 |
1.8% |
| CaO |
.3% |
| MgO |
.2% |
| Alkalies |
.7% |
I am advised by Jack Brennan of Hunter Refractories that the AP Green product called "Super G 3000 Heat Set Plastic"
is a full replacement for the Mono-T-9. Please send feedback on any suitable substitutes you may find out there in the refractory world.