セメントキルン燃焼ガス抽気ダストの処理システム及び処理方法

Title:

セメントキルン燃焼ガス抽気ダストの処理システム及び処理方法

Document Type and Number:

Japanese Patent JP5180476

Kind Code:

B2

Abstract:

[Problems] To efficiently remove lead from dust contained in extracted cement kiln combustion gas while reducing facility and running costs. [Means for Solving Problems] A treatment system 1 comprising: a probe 3 for extracting a part of combustion gas, while cooling it, from a kiln exhaust gas passage, which runs from an inlet end of a cement kiln to a bottom cyclone; a classifier 5 for separating coarse powder from dust contained in the combustion gas extracted by the probe 3; a wet dust collector 6 for collecting dust from the extracted gas containing fine powder discharged from the classifier 5; and devices 12, 13 for feeding sulfurizing agent for sulfurizing lead contained in the kiln exhaust gas to the wet dust collector 6, and others. From the sulfurizing-agent feeders 12, 13 are preferably added the sulfurizing agents to a circulation liquid tank 7 or a pump 9 for circulating slurry. The slurry obtained by the wet dust collector 6 is separated into froth including lead and tail side slurry including gypsum by a flotation facility 14, 17, 18.

Inventors:

Shinichiro Saito
Soichiro Okamura
Go Matsura

Application Number:

JP2006537685A

Publication Date:

April 10, 2013

Filing Date:

September 20, 2005

Export Citation:

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