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湖北省松木坪水泥厂所用原料中的Al_2O_3含量较高:粘土Al_2O_3含量为16％,煤灰中含39％,石灰石中为3％。因此在配料时,铝率总是较高,均在1.6～1.8。而烧成时,料子发粘、结块,十分难烧。为了降低fCaO含量,不得不降低石灰饱和系数,致使熟料强度标号上不去,强度增长率较低。 1993年6月起,该厂以新技术开发QC小组为主体,在本厂的高铝配料中,增加铁质含量以提高其C_4AF生成量,使之达到高铝高铁配料方案,达到提高熟料强度和强度增长率之目
The content of Al_2O_3 in raw materials used in Songmuping Cement Plant in Hubei Province is relatively high: clay Al_2O_3 content is 16%, coal ash content is 39%, limestone content is 3%. Therefore, in the ingredients, the aluminum rate is always higher, all in the 1.6 to 1.8. When fired, the material is sticky and agglomerated and it is very hard to burn. In order to reduce the fCaO content, the lime saturation coefficient had to be reduced, resulting in a failure to label the clinker strength and a low growth rate of strength. In June 1993, the plant focused on the development of new technology QC team, in the high alumina ingredients of the plant, increase the iron content to increase its C_4AF production, so that it can reach the high aluminum high-speed iron batching program, to improve the clinker Intensity and intensity growth rate