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Method of recycling chlorine bypass dust generated in cement manufacturing process
Disclosed is a method of recycling chlorine bypass dust (CBD) discharged from a firing furnace during a cement manufacturing process which comprises the steps as claimed in claims 1 and 2. According to the present invention, the recycling method recovers and recycles chlorine and potassium, which are a main component of the CBD, in a form of potassium chloride from the CBD which is a waste generated in the cement manufacturing process to be mostly buried, and precipitates and filters heavy metal containing lead so as to recover and recycle the heavy metal as lead smelting raw materials. Dechlorinated sludge of which a main component is gypsum and other heavy materials such as chlorine and lead can be recycled as cement material.
청구항 제1항 및 제2항에 기재된 단계를 포함하는 것을 특징으로 하는 시멘트 제조 공정 중의 소성로에서 배출되는 염소 바이패스 더스트(CBD)의 재활용 방법이 개시된다. 이 재활용 방법에 따르면, 시멘트 제조 공정에서 발생되어 대부분 매립되고 있는 폐기물인 CBD로부터 그 주성분인 염소와 칼륨을 염화칼륨의 형태로 회수하여 재활용하며, 납을 포함하는 중금속을 침전, 여과하여 납 제련 원료로 회수하여 재활용하며, 염소 및 납 등의 중금속이 제거된 석고를 주성분으로 하는 탈염소 슬러지는 시멘트 원료로 재활용할 수 있다.
Method of recycling chlorine bypass dust generated in cement manufacturing process
Disclosed is a method of recycling chlorine bypass dust (CBD) discharged from a firing furnace during a cement manufacturing process which comprises the steps as claimed in claims 1 and 2. According to the present invention, the recycling method recovers and recycles chlorine and potassium, which are a main component of the CBD, in a form of potassium chloride from the CBD which is a waste generated in the cement manufacturing process to be mostly buried, and precipitates and filters heavy metal containing lead so as to recover and recycle the heavy metal as lead smelting raw materials. Dechlorinated sludge of which a main component is gypsum and other heavy materials such as chlorine and lead can be recycled as cement material.
청구항 제1항 및 제2항에 기재된 단계를 포함하는 것을 특징으로 하는 시멘트 제조 공정 중의 소성로에서 배출되는 염소 바이패스 더스트(CBD)의 재활용 방법이 개시된다. 이 재활용 방법에 따르면, 시멘트 제조 공정에서 발생되어 대부분 매립되고 있는 폐기물인 CBD로부터 그 주성분인 염소와 칼륨을 염화칼륨의 형태로 회수하여 재활용하며, 납을 포함하는 중금속을 침전, 여과하여 납 제련 원료로 회수하여 재활용하며, 염소 및 납 등의 중금속이 제거된 석고를 주성분으로 하는 탈염소 슬러지는 시멘트 원료로 재활용할 수 있다.
Method of recycling chlorine bypass dust generated in cement manufacturing process
시멘트 제조 공정에서 발생되는 염소 바이패스 더스트의 재활용 방법
CHOI YOON JIN (author)
2019-12-04
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
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