Annular shaft kiln invented by authors is an achievement in scientific research of Wuhan University of Technology. The invention-patent technology has been applyed recently to a φ2.2×7.7m circular shaft kiln of ...Annular shaft kiln invented by authors is an achievement in scientific research of Wuhan University of Technology. The invention-patent technology has been applyed recently to a φ2.2×7.7m circular shaft kiln of semi-mechnization in Tangshan National Cement Plant. The circular shaft kiln became an annular shaft kiln after a core tube was added in it as an inner annulation. This kiln has been proved to be successful in practice. It’s output after firing on 9th october 1989 has increased by 50%. The average clinker mark of over 525 has展开更多
燃煤环形套筒窑在中国石灰窑行业首次成功运行,石灰的活性度为383.8 m L,氧化钙质量分数为93.08%,实现了燃煤环形套筒窑的高效清洁燃烧。针对项目试运行阶段原料与产品中的氧化镁存在收支不平衡问题,从热力学分析、实验验证、现场数据...燃煤环形套筒窑在中国石灰窑行业首次成功运行,石灰的活性度为383.8 m L,氧化钙质量分数为93.08%,实现了燃煤环形套筒窑的高效清洁燃烧。针对项目试运行阶段原料与产品中的氧化镁存在收支不平衡问题,从热力学分析、实验验证、现场数据分析等几个方面入手,分析验证了窑内氧化镁高温还原的可能性,并对窑内氧化镁的物料平衡、氧化镁还原挥发富集过程等进行了分析。根据燃煤套筒窑原料石灰石中高钙镁比条件进行了模拟煅烧实验,验证了氧化镁的还原现象。由窑底灰、收尘灰及下燃烧室灰渣成分判断,石灰石原料由于发生固相还原反应减少的氧化镁,在下燃烧室及窑底灰处进行了富集。展开更多
文摘Annular shaft kiln invented by authors is an achievement in scientific research of Wuhan University of Technology. The invention-patent technology has been applyed recently to a φ2.2×7.7m circular shaft kiln of semi-mechnization in Tangshan National Cement Plant. The circular shaft kiln became an annular shaft kiln after a core tube was added in it as an inner annulation. This kiln has been proved to be successful in practice. It’s output after firing on 9th october 1989 has increased by 50%. The average clinker mark of over 525 has
文摘燃煤环形套筒窑在中国石灰窑行业首次成功运行,石灰的活性度为383.8 m L,氧化钙质量分数为93.08%,实现了燃煤环形套筒窑的高效清洁燃烧。针对项目试运行阶段原料与产品中的氧化镁存在收支不平衡问题,从热力学分析、实验验证、现场数据分析等几个方面入手,分析验证了窑内氧化镁高温还原的可能性,并对窑内氧化镁的物料平衡、氧化镁还原挥发富集过程等进行了分析。根据燃煤套筒窑原料石灰石中高钙镁比条件进行了模拟煅烧实验,验证了氧化镁的还原现象。由窑底灰、收尘灰及下燃烧室灰渣成分判断,石灰石原料由于发生固相还原反应减少的氧化镁,在下燃烧室及窑底灰处进行了富集。