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Ramming Material at the Bottom of Furnace

Chemical Composition/%			Product Type
Chemical Composition/%			JFF-DHL-78	JFF-DHL-83	JFF-ZDL-20	JFF-ZDL-25	JFF-HT70	JFF-D-M
MgO			≥78	≥81	≥81	≥80	63～69	≥94
CaO			12～16	8～12	11～14	13～16	24～29	≤2.0
Fe₂O₃			4～6	4～6	3～5	3～5	4～6	0.5～1.5
Al₂O₃			≤0.6	≤0.6	≤0.6	≤0.6	≤0.6	≤0.6
SiO₂			≤1.5	≤1.5	≤1.2	≤1.5	≤1.5	≤2.0
Particle Size/mm			0～6	0～6	0～6	0～6	0～6	0～6
Physical Property	Compression Strength under Normal Temperature after Burning/Mpa	1300℃,3h	≥10	≥10	≥8	≥8	≥8	≥8
		1600℃,3h	≥35	≥35	≥35	≥35	≥35	≥35
	Change Rate of Line after Burning/%	1300℃,3h	0～-0.5	0～-0.5	0～-0.5	0～-0.5	0～-0.5	0～-0.5
	Change Rate of Line after Burning/%	1600℃,3h	-1.0～-3.0	-1.0～-3.0	-1.0～-3.0	-1.0～-3.0	-1.0～-3.0	-0.5～-2.0
Combined Characteristic			Ceramic Combination
Production Introduction		This product uses synthesis process and is obtained from balling and burning in high temperature, which will form a solid and complete sintered layer in high temperature. It is widely used in building the bottom and slope of UHP, HP, RP and DC electric stove and open-hearth furnace.