CONDENSATION AND ABSORPTION KINETICS OF THE CEMENT RAW MEAL ON LEAD AND
CADMIUM AT LOW-TEMPERATURES DURING CO-PROCESSING IN CEMENT KILNS

Cong Jing 
Yan Dahai  Li Li  Jiang Xuguang  Zhou Yingnan  He Jie  Wang Qi

doi:10.13205/j.hjgc.201504022

Volume 33 Issue 4

Sep. 2015

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2015 > 33(4): 103-107

Zhang Rusheng, Sun Biao, Sun Rong. EFFECT ANALYSIS OF DISCHARGED MINING WATER FOR BASIN WATER ENVIRONMENT[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(8): 143-146. doi: 10.13205/j.hjgc.201508033

Citation:

Cong Jing Yan Dahai Li Li Jiang Xuguang Zhou Yingnan He Jie Wang Qi, . CONDENSATION AND ABSORPTION KINETICS OF THE CEMENT RAW MEAL ON LEAD AND CADMIUM AT LOW-TEMPERATURES DURING CO-PROCESSING IN CEMENT KILNS[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(4): 103-107. doi: 10.13205/j.hjgc.201504022

Zhang Rusheng, Sun Biao, Sun Rong. EFFECT ANALYSIS OF DISCHARGED MINING WATER FOR BASIN WATER ENVIRONMENT[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(8): 143-146. doi: 10.13205/j.hjgc.201508033

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CONDENSATION AND ABSORPTION KINETICS OF THE CEMENT RAW MEAL ON LEAD AND CADMIUM AT LOW-TEMPERATURES DURING CO-PROCESSING IN CEMENT KILNS

doi: 10.13205/j.hjgc.201504022

Cong Jing Yan Dahai Li Li Jiang Xuguang Zhou Yingnan He Jie Wang Qi,

Publish Date: 2015-04-22

Abstract

Abstract

This paper studied the condensation and absorption characteristic of the cement raw meal for Pb and Cd in lead and cadmium chloride through a coupling device of a rotary tube furnace and a vertical furnace with automatic temperature control．Ｒesults showed that heavy metal vapor in the flue gas mainly condensated on the surface of cement raw meal at lowtemperatures during co-processing in cement kilns． Heavy metals ( Pb、Cd) into the experimental furnace could be divided into three parts: Condensation on the wall of the vertical furnace，occupying approximately 60% for Pb，and 60% for Cd; condensation and absorption on the cement raw meal，occupying lower than 30% for Pb，and 20% ～ 30% for Cd; releasing into the atmosphere，which occupies less than 20% for Pb，and approximately 10% for Cd． The condensation and absorption of the cement raw meal for Pb and Cd both increased with time，but decreased as the temperature increase． The condensation and absorption kinetics could be well described by the double constant rate equation，and the apparent activation energy of Pb was 5. 013 kJ /mol，and Cd was 5. 071 kJ /mol．
- co-processing,
- Pb,
- Cd,
- kinetic,
- condensation and absorption

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