Significant indirect benefits which arise out of killed steel and reduced tapping temperatures are:
Reduction in casting related issues like blowholes and pinholes
Reduction in rebar losses from casting defects
Shorter heat time – Higher production
Longer lining life – Lower refractory cost – Larger melt size in the extra heats gained
Lower rolling mill rejections – Less split rebars
Vastly improved steel quality – Dramatic drop in blowholes and pinholes in the billet
Increased casting speed due to lower tapping temperatures – Lower rhombicity in billets and less casting defects
These will become evident after continued use of Remix 55 & INSUTAL 4A. The figures used are conservative and there should be further lowering of tapping temperatures (Approximately 20 – 40 C) after confidence build up on the shop floor.
1.Synthetic Slag Deoxidizer - Remix 55
REMIX 55, is a synthetic slag deoxidizer, tailor-made for controlling the [O] ppm, of steel through Induction furnace route.Some Advantages:
- Significantly improved % Mn recovery- i.e. 10 to 15% lower addition rate of ferroalloys
Ease of slag removal, as the slag agglomerate and becomes viscous.
Very low to nil, Mn drop in the ladle.
2.Ladle and tundish covering compound - Insutal 4 A
INSUTAL 4 A is an insulating refractory powder product used as a cover for molten steel. Some Advantages:
- Reduces radiation heat losses from the top surface of the Tundish & Ladle.
It helps to maintain consistent metal temperatures in the Tundish.
The material expands in volume 4 times on application and improves spreadability.