Kiln Hood · Roof
The kiln hood sits above the cement kiln outlet, gathering secondary air and protecting the outlet zone. The hood roof endures long-term radiant heating (from flame and hot clinker) and dust-laden gas scouring, with complex hanging and inspection structures. The castable cracks and detaches as a whole—a high-frequency repair zone of the kiln system.
High-temperature radiation: flame and hot clinker continuously radiate onto the roof; the roof lining runs hot with a heavy thermal load. Gas scouring: secondary air carrying dust scours roof and walls. Thermal shock: kiln swings and start/stop cause rapid temperature changes; thermal-shock stress cracks the castable. Structural stress: the large roof span creates expansion mismatch between hanging structure and lining. Hanger/anchor failure: after hangers and anchors fail at high temperature, the lining loses restraint and detaches in blocks.
After roof fall-out, the hood overheats and deforms, and secondary-air temperature and kiln stability drop; fallen blocks may enter the kiln mouth or grate cooler and damage equipment; forced shutdown for repair reduces availability.
Select the kiln hood roof for "thermal-shock resistance + radiation resistance + structural reliability":
Hanging installation: hang bricks/blocks by number with tight joints. On-site casting: form and vibrate complex zones fully. Water control: follow the datasheet. Bake-out: follow the curve and complete dehydration before commissioning.
Inspect roof lining and shell temperature regularly; treat cracking or fall-out signs promptly. At maintenance, focus on hanger/anchor corrosion and replace failed parts; record roof repair history to optimize hanging structure and grade selection.
Steel-fiber reinforced castable with 2-3 vol% heat-resistant stainless fibers provides random reinforcement and toughening. Al₂O₃≥65%, 1400℃ max service, greatly improved flexural and thermal-shock spalling resistance.
Learn More →
Castable precast blocks are factory-cast, cured and fired to drawings with ±2mm dimensional accuracy, 1700℃ max service. Uniform quality with crane-installed placement that eliminates formwork, casting and curing—dramatically shortening outage time.
Learn More →
LA-60 high-alumina castable uses bauxite clinker aggregate with Al₂O₃≥60% and a max service temperature of 1600℃. Its low-cement bond gives high density and good thermal-shock resistance.
Learn More →Contact Us
WeChat · 17513376789