Hello friend great work by the way . It turns out that calcium oxide converts back to calcium hydroxide , a deliquescent substance . I did not know this happens . When it converts from oxide to hydroxide it expands 75% . So it turns out its only good for a couple uses or maybe only a 1 time use heat shield . I have since bin suing zirconium oxide instead of lime . It makes a high emissivity paint that increases furnace performance . You can also make high temp glue with it
Helpful video - Thanks! I'm sure you have found a lot of new info since you posted, like oxy-acetelene flame is about 6000 deg F (no firebrick will handle that), but that what ilearning is all about, right?
@@mikesproject4704Thanks - I'm doing a couple of experiments now (thanks for the inspiration), using a combo of Type S mortar (which has lime and portland cement) and Aluminum Oxide and Perlite (because I need it to be rigid but somewhat shapeable and to have very good insulating properties), and the with/without the sodium silicate -- to see what happens. We shall see what happens - I will test it up to 3000°F or so.
@@AerialLensVideo the lime mixture i made would get soft when hot and would run. with other elements might make a great bonding agent. i used a mortar like substance called satinite i think that would make a good bonding agent and filling gaps... sounds interesting what you are experimenting with let me know how it works out.
Hello friend great work by the way . It turns out that calcium oxide converts back to calcium hydroxide , a deliquescent substance .
I did not know this happens . When it converts from oxide to hydroxide it expands 75% . So it turns out its only good for a couple uses or maybe only a 1 time use heat shield . I have since bin suing zirconium oxide instead of lime . It makes a high emissivity paint that increases furnace performance . You can also make high temp glue with it
yes watched the video interesting comment by Forsythemein
I think you need to cure it first with CO2 before applying heat.
Can’t believe i miss this video for 2 plus weeks also callab with me come down to Australia this year😂
that would be fantastic
Helpful video - Thanks!
I'm sure you have found a lot of new info since you posted, like oxy-acetelene flame is about 6000 deg F (no firebrick will handle that), but that what ilearning is all about, right?
correct.. the lime water glass might work for low temp applications. but not good for higher temp stuff.. the hard or heavy fire brick is the best
@@mikesproject4704Thanks - I'm doing a couple of experiments now (thanks for the inspiration), using a combo of Type S mortar (which has lime and portland cement) and Aluminum Oxide and Perlite (because I need it to be rigid but somewhat shapeable and to have very good insulating properties), and the with/without the sodium silicate -- to see what happens. We shall see what happens - I will test it up to 3000°F or so.
@@AerialLensVideo the lime mixture i made would get soft when hot and would run. with other elements might make a great bonding agent. i used a mortar like substance called satinite i think that would make a good bonding agent and filling gaps... sounds interesting what you are experimenting with let me know how it works out.
Did you try sand lime and waterglass? I am at the start of my build and really want to get it right first go.
no i didnt that could be work i will try