Name of the Technology
A Process for production wear resistant cast iron by smelting reduction of waste products like red mud and de-silicated sand.
The Technology
This technology is about a process for producing wear resistant cast iron by
subjecting a metallic charge to smelting reduction in the presence of a flux
selected from red mud or desilicated sand as a source of titanium. The metallic
charge is melted under a flux cover of red mud, in a basic induction or electric
furnace, and it picks up a detectable quantity of Ti. The melt solidifies with a
mottled or white cast iron microstructure depending on the final carbon and
silicon contents. With added ferro-silicon it solidifies as grey cast iron.
USP
- Waste material is used as flux. Flux is selected from red mud or desilicated sand.
- Induction furnace smelting makes it economical.
Advantages
- Red mud is used as flux.
- Weight of flux is from 1 to 5 % of the metallic charge.
- The metallic charge is selected from cast iron or steel scrap, carbon and ferrosilicon.
- TiC particles are embedded in cast iron matrix that imparts wear resistance.
