ZrO_2配加料引入方式对熔铸AZS-36制品使用性能的影响

Effects of ZrO_2 compensating materials adding methods on properties of fused cast AZS-36 products

以w（Al2O3）≥98．5％的工业氧化铝粉（≤0．088mm），w（ZrO2）〉65．5％的锆英砂（≤0．25mm），W（ZrO2）〉85．0％的脱硅锆（3～5mm），w（ZrO2）〉39％的熔铸AZS-41熟料（4～20mm）为原料，助熔剂为训（Na2CO3）≥99．0％的纯碱（≤0．088mm），采用脱硅锆原料或熔铸AZS-41熟料补充ZrO2的两种配加料引入方式配料后混匀，分批加入电弧炉中，在高于1800℃的温度下熔融后浇注到铸模中，铸件再经过冷凝、退火、切割、磨削和预组装后，制成熔铸AZS-36耐火材料制品，研究了两种配加料引入方式对熔铸AZS-36耐火材料制品抗玻璃液侵蚀、玻璃相渗出量及气泡析出率的影响。结果表明：添加熔铸AZS-41熟料或较多的脱硅锆，可以改善制品的抗玻璃液侵蚀性及玻璃相的渗出量；进一步提高配料的纯度，控制其Fe2O3、TiO2等杂质成分的含量，有助于减少制品高温下玻璃相的渗出量。

Industrial alumina powder（ ≤0. 088 mm and w（Al2O3 ）≥98.5% ） ,zircon sand（ ≤0.25 mm and w（ZrO2） 〉 65.5% ）,desilicated zirconia（3 -5 mm and w（ZrO2 ） 〉8.5.0% ）,fused cast AZS-41 chamotte （4-20 mm and w（ZrO2） 〉39%） were used as the starting materials and sodium carbonate （≤0. 088 mm and w（ Na2CO3 ）≥99.0% ） was used as the fluxing agent. Fused cast AZS -36 refractory products were made by adding desilicated zirconia or fused cast AZS -41 chamotte to compensate ZrO2,mixing all the materials well,adding in the arc furnace by batch,melting at over 1 800 ℃,pouring into the moulds,condensing, annealing,cutting,grinding and pre-assembling. The corrosion resistance to molten glass,glass phase exudation quantity and bubble separation ratio of fused cast AZS -36 products with two kinds of ZrO2 compensating materials were researched. The results showed that ： （ 1 ） Adding fused cast AZS -41 chamotte or some more desilicated zirconia could improve the corrosion resistance to molten glass and glass phase exudation quantity; （2）The glass phase exudation quantity at high temperature could be reduced by increasing the purity of batch and controlling the content of impurities,such as Fe2O3 and TiO2.