期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 20, 期 -, 页码 S182-S186出版社
ELSEVIER
DOI: 10.1016/S1003-6326(10)60036-2
关键词
microwave pretreatment; spent catalyst; leaching rate; zinc
资金
- China International Science and Technology Cooperation Program [2008DFA91500]
- International Collaboration Project of Yunnan Provincial Science and Technology Department [2006GH01]
- Yunnan Provincial Natural Science Foundation [14051157]
A new technology for microwave pretreatment of spent catalyst on Zn extraction by HCl leaching was proposed and the temperature-change curve of spent catalyst under microwave irradiation was measured. The influence of microwave pretreatment temperature and microwave irradiation time on zinc extraction was investigated and the mechanism of microwave pretreatment for spent catalyst was analyzed. The results show that microwave pretreatment can greatly enhance the leaching rate of Zn. The Zn extraction reaches 96.58% under the conditions of microwave pretreatment temperature of 950 degrees C and the microwave irradiation time of 12 min. The blocked pores of spent catalyst can be opened through microwave pretreatment, increasing the contact area of leaching reagent and zinc.
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