I'm performing an experiment based on slag corrosion behavior of the refractory material. I need to store molten metal at $\approx$ 1600-1700 K for that.

Specifically, I'm working on slag corrosion and penetration behaviour of refractory (MgO-MgAl2O4). I'm going to use immersion method, so in this method "Cylindrical or square pillar shaped samples are held in the corrosive liquid(slag) in a furnace. Immersion time, temperature and atmosphere can be varied" So, for storing slag+molten metal, I need to use a crucible.

Please suggest what would be the best choice of material for crucible. What is a crucible material?

  • 1
    $\begingroup$ What have you found so far? What gets used in foundries? $\endgroup$
    – Solar Mike
    Jan 15 '18 at 8:30
  • $\begingroup$ Have you looked at any table of element melting points (and/or alloys)? $\endgroup$ Jan 15 '18 at 16:08
  • $\begingroup$ Refractory lined steel crucible. $\endgroup$ Jan 15 '18 at 17:28

I would suggest a silicon carbide crucible. The melting point is like 3000k which should serve your purposes. Also as I recall, it is inert to most molten metals.

You say you are testing slag with molten metal. What is the metal? Do you know what the slag is composed of?

  • $\begingroup$ mostly molten steel slag CaO-Al2O3-SiO2 basicity approx 1.7-1.8 $\endgroup$ Jan 16 '18 at 14:21
  • $\begingroup$ If you check literature , I think you will find small amount of " bad actors" like Fl and Zn cause most of the refractory deterioration. Not my area, but I have read that "acid" slag or "basic" slag is important. Look at " Making and Shaping of Steel" by USSteel. $\endgroup$ Feb 15 '18 at 16:46

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.