熟料包心料的产生原因及解决措施

通过熟料岩相分析及热工标定诊断,熟料包心料产生的主要原因为烧成系统风量严重不足,窑炉煤粉燃烧不完全致使还原气氛较浓。通过采取将冲板流量计改为转子秤、将普通翻板阀更换为微动翻板阀、在三次风管入分解炉口加做导风墙、更换新的喷煤管等措施,回转窑工艺故障率大幅降低,熟料质量及性能显著提高,生产能耗下降明显。

The Cause and Solution of Core Material in Clinker

Based on the analysis of clinker petrography and the diagnosis of thermal calibration,the main reason of core material in clinker is the lack of air flow in the pyro-system and the dense reduction atmosphere caused by incomplete combustion of pulverized coal in the kiln.The technical failure rate of rotary kiln has been greatly reduced by changing the punching plate flowmeter into a rotor scale,replacing the ordinary tilting plate valve with a fretting tilting plate valve,adding an air guide wall at the entrance of the tertiary air duct to the calciner,and replacing a new coal injection pipe,the quality and performance of clinker are improved significantly,and the energy consumption is decreased obviously.