(Replace with AP Green "Super G 3000 Heat Set Plastic")
One major problem area for my book is when I published in late 1998, Mono-T-9 was manufactured by National Refractories and readily available. But today Mono-T-9 is no longer being produced. The company, NATIONAL REFRACTORIES CORP., went out of business as a result of litigation against asbestos producers. This created a huge gap in the refractories industries and all the deep pockets were searched and emptied. To find good refractories today is a big challenge. Nevertheless, 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 | 3100ºF |
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 (recently absorbed by ANACHEMIA MINING LLC) 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.
Some of the old AP Green product line is currently made by Harbison-Walker Refractories which can be found on-line.
Their contact number is 808-428-1760
HARBISON-WALKER INTERNATIONAL
868 ELSTON STREET
RAHWAY, NJ 07065