A technology enterprise integrating the R&D, manufacturing, sales, and application of ceramic fiber products (including equipment).

Ceramic fiber castable

Ceramic fiber castable is a paste‑like, amorphous refractory material. It uses low‑slag‑ball‑content blown fiber wool as the aggregate, combined with appropriate amounts of binders, refractory fillers, and additives. This product features low bulk density, low thermal capacity, low thermal conductivity, high strength, and excellent gas tightness, making it widely used for linings in medium‑ and low‑temperature thermal equipment and for movable furnace covers. It can also serve as an insulating material in high‑temperature kilns, offering superior thermal insulation performance. The material exhibits excellent workability, and after application, it provides a monolithic furnace wall with enhanced structural integrity, making it particularly well suited for complex‑shaped linings.

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Product Description

Product Description:
◎ Ceramic fiber castable: This product is a plastic, amorphous refractory material formulated with low‑slag‑ball‑content blown fiber wool as the aggregate, combined with appropriate amounts of binders, refractory fillers, and additives. It features low bulk density, low thermal capacity, low thermal conductivity, high strength, and excellent gas tightness, making it widely used for linings in medium- and low‑temperature thermal equipment and for movable furnace covers. It can also serve as an insulating material in high‑temperature kilns, offering superior thermal insulation performance. The product exhibits excellent workability, resulting in a monolithic furnace wall after application, and is particularly well suited for complex‑shaped linings.

Product Categories:
◎ 1260 Fiber Castable HZGX-297
◎ 1400 Fiber Castable HZGX-497

Product Features:
◎Low heat capacity
◎Low thermal conductivity
◎High compressive strength
◎ Excellent dimensional stability
◎ Excellent construction performance

Typical applications:
◎ Insulation layer for industrial kiln linings or backings in high-temperature industrial kilns, including smelting furnaces and tunnel kilns.
Steel rolling soaking furnace, continuous heating furnace, heat‑treatment annealing furnace, pit furnace, and bell‑type furnace
◎ Electric heating furnace for ladle covers: furnace door, observation port, and burner bricks

Technical Indicators:

Product Name	Ceramic fiber castable
Product code		HZGS-297	HZGS-397	HZGS-497	HZGS-597
Maximum operating temperature		1050	1150	1250	1350
Long-term operating temperature		1000	1100	1200	1300
Chemical Composition (%)	AL ₂ O ₃	≥ 30	≥ 35	≥ 40	≥ 40
Chemical Composition (%)	SiO ₂	≥ 30	≥ 40	≥ 35	≥ 35
Bulk density (kg/m³)	Wet state	1150-1250	1150-1250	1250-1350	1250-1350
	110℃ for 24 hours, dry	550	600	600	700
	After burning	500 (1000℃ × 3 h)	550 (1000*3h)	550 (1200*3h)	550 (1300*3h)
Thermal conductivity (W/m·K)	Average temperature 400℃	0.115	0.118	0.150	0.171
	Average temperature 600℃	0.116	0.155	0.175	0.195
	Average temperature 800℃		0.185	0.195	0.221
Cold flexural strength (MPa) ≥	After drying at 110℃ for 24 hours	0.4	0.4	0.5	0.5
Cold flexural strength (MPa) ≥	After burning	0.4 (1000℃ × 3 h)	0.4 (1100℃ × 3 h)	0.4 (1200℃ × 3 h)	0.4 (1300℃ × 3 h)
Cold compressive strength (MPa) ≥	After drying at 110℃ for 24 hours	0.5	0.5	0.6	0.6
Cold compressive strength (MPa) ≥	After burning	0.4 (1000℃ × 3 h)	0.5 (1100℃ × 3 h)	0.5 (1200℃ × 3 h)	0.6 (1300℃ × 3 h)
Heat shrinkage (%) ≤	3 (1000℃ × 24 h)	3 (1100℃ × 24 h)	3 (1200℃ × 24 h)		3 (1300℃ × 24 h)
Initial setting time (min) ≥	60	60	60	60	60
Demolding time (h)	3-8	3-8	3-8	3-8	3-8
Shelf life	When not exposed to freezing temperatures and during high-temperature drying: three months
Packaging	Bagged, 25 kg/bag

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