Dust emission occurs during the lime discharging process in the kiln roof of 150 m3 gas-burning  shaft kiln in Shaoguan Iron & Steel Group Co.,Ltd., the quantity of smoke and dust is large,the duration of time is long,the environmental protection is not up to the standard.In order to solve this problem,some measures were adopted,such as improving the parameters of induced draft fan,improving the dust accumulation in flue gas pipes and cleaning pipes,optimizing the parameters and process parameters of multi-pipe ceramic dust remover,pulse bag dust remover and kiln top seal.The dust emission from the kiln roof has been well controlled and has met the requirements of environmental protection.

"> Gas-buring lime shaft kiln, Dust emission, Cause analysis, Improvement