What is the difference between high calcium quicklime, dolomite quicklime and magnesian quicklime for the steel maker?
The chemistry of these limes are related to the natural stone from which they are processed. High calcium quicklime has approximately 97% CaO with MgO less than 3%. High Calcium lime is utilized in the furnace for slag production and in the secondary steelmaking process to promote desulfurization, inclusion entrapment, and insulation against air and to prevent temperature losses. Dolomitic quicklime contains natural combinations of CaO and MgO, with CaO content as low as 60% with a corresponding MgO content of up to 40%. This is used primarily for meeting the MgO requirements of the EAF slag to prevent refractory wear and promote good foaming properties to protect the sidewalls of the furnace. A specific Magnesian quicklime called SteelCal is available from Carmeuse. This product provides natural combinations of Calcium and Magnesium Oxides, ranging from of 5% to 12% of MgO. This product is utilized in the furnace to promote early dissolution of MgO with additional dolomitic lime added
Related Questions
- Why does the price of quicklime increase when I know that there are still enormous deposits of high calcium limestone available to be produced into quicklime?
- What is the difference between high calcium quicklime, dolomite quicklime and magnesian quicklime for the steel maker?
- How does the availability and quality of high calcium limestone deposits affect the price of quicklime?
