Integrated refractory packages for rotary kilns, preheaters, precalciners and grate coolers.
Cement kilns run above 1450℃ with clinker coating, alkali-vapor attack and abrasion. The company supplies high-alumina and spalling-resistant bricks, SiC castables and precast blocks for transition and burning zones, preheater stages, precalciners and grate coolers — extending lining life and shortening overhaul time.
Typical kilns in this industry — click each to see its specific problems and solutions
The rotary kiln burning zone exceeds 1400°C; coating stability determines magnesia brick life, while the transition zone faces thermal shock and mechanical stress.
View Problems & Solutions →Preheater cyclones and the precalciner suffer build-up from alkali/chlorine/sulfur cycles; anti-build-up and wear-resistant linings are key.
View Problems & Solutions →The grate cooler hot end absorbs clinker drop impact and secondary-air abrasion; heavy-duty steel-fiber wear-resistant castables are widely used.
View Problems & Solutions →The kiln hood connects the rotary kiln and grate cooler; suspended roof structure and side-wall thermal shock resistance drive maintenance.
View Problems & Solutions →
Phosphate-bonded high-alumina brick (Al₂O₃≥75%, refractoriness ≥1770℃) avoids high-temperature firing for energy saving, hardening further in service as temperature rises. Cost-effective with good thermal-shock resistance.
Spalling-resistant high-alumina brick introduces ZrO₂ (3-6%) for transformation and microcrack toughening. Al₂O₃≥70%, thermal-shock stability ≥15 cycles, greatly improved resistance to structural spalling under frequent temperature cycling.
Micro-expansion high-alumina brick (Al₂O₃≥75%, PLC 0.2-0.6% at 1500℃) expands slightly at temperature to compensate joint shrinkage, improving lining integrity and preventing gas/slag leakage.
Fireclay brick (Al₂O₃≥40%, refractoriness ≥1710℃) offers good thermal-shock resistance, economy and easy installation—the classic general-purpose refractory brick.
Magnesia-alumina spinel brick (MgO≥88%, Al₂O₃ 6-10%) is a chrome-free, environmentally friendly alternative to magnesia-chrome. Thermal-shock stability ≥8 cycles, resistant to cement clinker and alkali condensation.
Silicon-mullite brick (Al₂O₃≥55%, SiC≥20%) combines mullite thermal-shock resistance with SiC high thermal conductivity and wear resistance, with low conductivity for energy saving.
Rotary activation furnaces, Shaft (Slep) furnaces and carbonization furnaces — with the refractory lining supplied and installed by the same team.
See activation furnaces →
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