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Make kiln posts using kaolin, kiln mortar using kyanite
Super-duty refractories can be made using expensive materials and economy versions from common materials. Use the former where needed but the latter most often.
Plastic Refractory Alumina Body H1 Shelf Clay
Total:100.30 Notes *This has excellent plasticity. Use it for rolling refractory slabs (to make super-thin kiln shelves for our small test kilns) or forming other shapes. Dry pieces evenly to prevent warping during drying. Pictures XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Plastic Refractory Alumina Body H1" keywords="Shelf Clay" id="116162" key="8QRS3sKn" date="2022-09-19" codenum="L3693H1"> <recipelines> <recipeline material="Calcined Alumina" amount="48.000" tolerance=""/> <recipeline material="Bentonite" amount="4.000" tolerance=""/> <recipeline material="Kyanite 48 mesh" amount="18.000" tolerance=""/> <recipeline material="M23 Ball Clay" amount="30.000" tolerance=""/> <recipeline material="Barium Carbonate" amount="0.300" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2017-05-05, Modified: 2022-09-19 23:16:49 |
Plainsman Super Kiln Wash
Total:815.00 (R) Notes *This produces a super-refractory powder layer that stays in place and does not harden excessively after many firings, does not chip or cake, that does not shrink and crack. Because it contains gum it paints on very well, staying wet long enough to level and even out with a brush. Also useful as a refractory ceramic coating. Pictures L4001 Kiln wash (left) vs. typical kaolin:silica wash (right) The new wash has been fired on and is adhering well, not shrinking or cracking and is not powdery. The layer is much thinner. The other side has been fired many times and the flakes stick to the foot rings of every piece fired in the kiln. Super Kiln Wash XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Plainsman Super Kiln Wash" id="115132" key="dQMCWvcG" date="2021-12-19" codenum="L4001"> <recipelines> <recipeline material="Zircopax" amount="400.000" tolerance="" unitabbr="GM"/> <recipeline material="Calcined Kaolin" amount="100.000" tolerance="" unitabbr="GM"/> <recipeline material="Laguna Gum Solution" amount="113.000" unitabbr="GM" added="true"/> <recipeline material="Water" amount="200.000" unitabbr="GM" added="true"/> <recipeline material="Calcium Chloride" amount="2.000" unitabbr="GM" added="true"/> </recipelines> </recipe> </recipes> Born: 2017-08-03, Modified: 2021-12-19 22:21:32 |
Plastic Refractory (heavy duty)
Total:119.00 Notes *The original intent of this test was to make a super duty tapper clay (for the foundry industry). But, this is also be suitable as a general-purpose plastic refractory akin to a fireclay. This recipe employs alumina instead of the silica used in L4404A (the higher heat duty this will give obviously comes at higher expense). Pictures Testdata SHAB - Shrinkage/Absorption
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Plastic Refractory (heavy duty)" id="201083" key="QFtziT91" date="2024-11-19" codenum="L4404B"> <recipelines> <recipeline material="Tile #6 Kaolin" amount="33.000" tolerance=""/> <recipeline material="KT #1-4 Ball Clay" amount="33.000" tolerance=""/> <recipeline material="Calcined Alumina" amount="33.000" tolerance=""/> <recipeline material="Christy Minerals STKO 22 S Grog" amount="20.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2021-02-12, Modified: 2024-11-19 02:06:33 |
Refractory Casting Slip
Total:142.22 Notes *This is used to make melt flow testers. It is very refractory, still highly porous even at cone 10. We are able to cast pieces of very thin walls and they do not warp in firing even at cone 6. Pictures L4404A without and with L3693E liner These frit ingots have melted to cone 04 and slow cooled. We used cast crucibles made from L4404A refractory slip. The front one has an alumina oxide liner of L3693E. Without the liner, the ingot in the back is inseparable from the body. But with the liner (front), it easily breaks away. The alumina has remained as a powder and can be easily cleaned off the ingot leaving almost no residue. Frit manufacturers crash cool frit batches by quenching them in water, this one was slow-cooled, we are hoping that will make the difference to enable it to pass a lead leaching test. XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Refractory Casting Slip" id="194791" key="CgXGFHth" date="2024-11-19" codenum="L4404A"> <recipelines> <recipeline material="Pioneer Kaolin" amount="35.000" tolerance=""/> <recipeline material="KT #1-4 Ball Clay" amount="35.000" tolerance=""/> <recipeline material="Silica" amount="30.000" tolerance=""/> <recipeline material="Water" amount="41.580" tolerance=""/> <recipeline material="Darvan #7" amount="0.640" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2021-02-12, Modified: 2024-11-19 02:09:18 |
Alumina Wadding #2
Total:100.00 Notes *The objective of this recipe is a plastic material that is also refractory (for making wadding when loading kilns). This recipe was found to be better than one using hydrated alumina (lower firing shrinkage). Pictures Testdata SHAB - Shrinkage/Absorption
LDW - LOI/Density/Water Content
XML (to paste into Insight) <?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Alumina Wadding #2" id="210350" key="yq7eD8kQ" date="2023-01-06" codenum="L4482B"> <recipelines> <recipeline material="Calcined Alumina" amount="50.000" tolerance=""/> <recipeline material="EPK" amount="50.000" tolerance=""/> </recipelines> </recipe> </recipes> Born: 2021-12-22, Modified: 2023-01-06 19:20:13 |