不同分解率物料与碱、氯、硫融体的黏结特性及其对生料高温流动性的影响

Study on cohesive properties of kiln feeding raw meal of different rate of decomposition with single or complex melt of alkali, chlorine and sulphur and their influence on fluidity of high temperature materials in kiln

采用化学试剂和生产原料,研究了预分解系统内不同分解率物料与碱、氯、硫等单一或复合低温融体之间的黏结特性。结果表明:混合融体KCl+K2SO4+CaSO4黏结物料的能力最强。分解率高的生料不容易被融体黏结,物料的高温流动性能更好,分解率低的生料较容易被黏结形成结皮。因此,提高入窑生料分解率可以减少结皮堵塞的几率。

The cohesive properties of kiln feeding raw meal of different rate of decomposition with single or complex low temperature melt formed by alkali, chlorine and sulphur in preheating-decomposition system were studied with industry raw meal and chemical reagent. The results showed that the cohesive material of KCI＋K：,S04＋CaS04 composite melts had the most powerful cohesive ability. The raw meal with higher rate of decomposition was difficult to be adhered by melts, and had bet- ter fluidity at high temperature. The raw meal with lower rate of decomposition was easily to be adhered by melts. Therefore, keeping a higher rate of decomposition of raw meal would reduce the risk of buildups jam.