This paper described a refractory cement kiln in supporting applications. With the cement industry in the continuous advancement of technology, Cement production line as part of the heart to the kiln is the size of short kiln development process more complicated, Cement kiln refractories are increasingly high requirements. Now, refractories in a cement kiln supporting an analysis done, for reference. Generally divided into the kiln feed zone (preheating zone), under the transition zone, on the transition zone, firing zone, Unloading zone (cooling zone) in several regions, length of the regional distribution of the ratio shown in Table 1 (D kiln shell plate for the effective diameter). Table 1 Kiln length ratio of the regional feed vaginal discharge zone on the firing zone with unloading zone 5D ~ ~ ~ 3D - 2D 4 D-1D all regions of the working conditions and material selection described below. Feed zone : The zone generally use the combination of high alumina bricks at elevated phosphate, Antistripping high alumina bricks at elevated, are still using alkali - resistant bricks, Kiln feed using mouth-to the crust SiC castable. Under the transitional zone : the relatively low temperature zone, requested brick lining of the small thermal conductivity, wear; Generally used Antistripping high alumina bricks at elevated, Silicon MO brick superior in performance Antistripping high alumina bricks at elevated, life than Antistripping about a high alumina bricks at elevated high times high alumina bricks at elevated prices of 1.5 times. On the transitional zone : the instability brought kiln Paper require kiln lining ability to resist changes in a good atmosphere, good thermal shock resistance, thermal conductivity small, wearable; Foreign recommended MgAl2O4 bricks, but the brick thermal conductivity and domestic slabs of silicon MO small thermal conductivity, wear, Performance certain degree, comparable to imported materials. Burning zone : The zone of high temperature, chemical reaction intense demands clinker brick lining erosion resistant, anti SO3, CO2 ability, No environmental hazards of chromium, magnesium - chromium SO3 products, the ability of poor CO2, and clinker reaction CrO3. have a shorter life expectancy, foreign generally use MgAl2O4 bricks, but the brick kiln Paper pegged more difficult, Dolomite brick and thermal shock resistance bad, Yishui; Rail abroad magnesium spinel brick kiln linked to the effects on the skin better, but the cost is too high, the new domestic low chromium compound magnesia spinel better use of brick. Unloading zone : the instability brought kiln Paper, temperature fluctuations, and the linings of the requirements of thermal conductivity coefficient, wear and thermal shock resistance; abroad recommends spinel bricks, but the brick spinel large thermal conductivity and poor wear resistance. In recent years, domestic mill use silicon slabs and slabs Antistripping wear; kiln sites using thermal shock resistance of castable. Materials used the technical specifications in Table 2. Table 2 common physical and chemical properties of materials technology indicators Antistripping high alumina bricks at elevated magnesia brick compound of silicon MO spinel MgAl2O4 brick brick mafic spinel blocks directly with magnesium-chrome brick main components Ceramics ≥ 70 6 ~ 9 ≥ 63 1 14 4 ~ ~ MgO ≥ 6 78 82 ~ 87 ~ 92 ≥ 80 0.8 3 Fe2O3 Cr2O3 2 ~ ~ 5 4 8 refractoriness (℃ ) 1780 1790 0.2Mh load ≥ softening point ≥ ≥ 1470 1600 1700 ≥ ≥ 1700 ≥ ≥ 1,650 1,700 temperature pressure (MPa) ≥ 45 ≥ ≥ 50 65 50 90 ≥ ≥ 45 bulk density (y) 2.5 ~ 2.6 ≥ ≥ 3 3.0 2.6 2.85 - 2.85 2.9 - 3.0-resistant ≥ Grinding coefficients (CC) 8.2 thermal conductivity (W mk) 1.4 2.5 2.8 2.6 Based on the above analysis, We can look at what loan allocation, but each item of raw materials, The fuel will combine their different characteristics of the appropriate adjustments. If the foreign projects using petroleum coke for the production of fuel, petroleum coke which contains large amounts of S, a higher heat value, combustion is not fully, if used directly with magnesium chrome bricks, slabs of Cr and S will be a combination of R2 (Cr, S) O4, they permeate the brick lining within, or even in the kiln shell plate occurred deposition, for the deposition site of the kiln plate corrosion metamorphism. In a cement kiln, CaO with SO3 reaction, generating the volumetric expansion CaSO4 and CaS, compared with CaO. Generation after the volume effect were 275% and 155%, leading to the slabs crack, thereby undermining the entire brick lining. Therefore, in the distribution of materials should also consider the production of materials used and fuel composition.