Magnesium Calcium Iron Dry Ramming Mass

Magnesium calcium iron dry ramming material is a dry material made of magnesium calcium iron sand and magnesia sand with reasonable grade, which is mainly used for building steel making and ferroalloy electric furnaces.

Technical parameter of magnesium calcium Iron dry ramming mass

Item		Índice
Item		MGT-1	MGT-2	MGT-3	MGT-4
MgO %		≥78	≥81	≥82	≥85
Cao %		12~15	6~9	8~11	6~8
Fe2o3 %		4~5	5~9	3~5	4~5
SiO2 %		≤1,3	≤1.5	≤1.1	≤1,3
Al2O3 %		≤0,6	≤0,6	≤0,6	≤0,6
Grain size composition mm		0~ 6	0~ 6	0~ 6	0~ 6
Bonding Method		Ceramic Bonded	Ceramic Bonded	Ceramic Bonded	Ceramic Bonded
Fired Cold Crush Strength MPa	1300℃×3h	≥10	≥10	≥8	≥10
Fired Cold Crush Strength MPa	1600℃×3h	≥30	≥30	≥30	≥30
Permanent Linear Change%	1300℃×3h	-0.2~-0.5	-0.2~-0.5	-0.2~-0.5	-0.2~-0.5
Permanent Linear Change%	1600℃×3h	-1.5~-2.5	-2.0~-3.0	-0.1~-0.2	-1.5~-2.5
Particle bulk density,g/cm3		≥3.25	≥3.25	≥3.25	≥3.25
Usage		Electric steelmaking furnace	Electric steelmaking furnace	Electric steelmaking furnace	Ferroalloy electric furnace