Complex material

Because I am creating a foundry, I some point I am going to have to create a molten metal material so I decided to starting trying to create one now, rather than having to rush it at the end of the project.
Below is my current version of my molten metal material.

The material also aniamtes whitch adds to the affect.

From the final version I hope to improve the glow. As well as tweeking the colour so it is much yellow than orange. To complete the look I also hope to create a heat haze from the material if possible, as I am unsure at this stage whether I could achieve in the time.