High Thermal Resistance Phosphate Castable for the Bottom of the Heating Furnace

Phosphate Castable is a castable that phosphoric acid or phosphate is used as bonding agent, aluminum sole calcium cement and magnesia is used as coagulant.

Phosphate Castable Characteristics:

1. High thermal resistance;
2. Good thermal shock resistance;
3. High compressive strength;
4. Strong erosion and impact resistance;
5. Good wear resistance.

Phosphate Castable Application:

Phosphate Castable is suitable for the bottom of the heating furnace and other parts which corrosion more serious by material friction and hot air scour, the mixing temperature is between 1000~1600℃

Phosphate Castable Technical Data Sheet:

Items		Al(H2PO4)3 Combined		H2PO4 Combined
		GPL75	GPL60	GPL75
Al2O3 (%)		≥75	≥60	≥75
Bulk Density (g/m3)		≥2.60	≥2.23	≥2.70
Compression Strength (MPa)	110℃x24h	34.9	28.1	32.5
	1000℃x3h	28.6	26.3	37.0
	1200℃x3h	46.5	35.4	48.0
	1400℃x3h	41.3	30.4	39.0
Thermal Compressive Strength (MPa)	1000℃x3h	29.2	30.8	33.0
	1200℃x1h	8.5	9.0	11.0
Permanent Linear Change (%)	1400℃x3h	0-0.65	0-0.92	0-1.07
Refractoriness Under Load at 0.20Mpa (℃)	Distortion 0.6%	1250	1190	1310
	Distortion 4%	1455	1470	1480
Thermal Shock Resistance (cycle)	800℃, water cooling	≥50	≥50	≥50