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1747231 
Journal Article 
High temperature dephosphorization behavior of monazite concentrate with charred coal 
Xing Peng-fei; Zhuang Yan-xin; Tu Gan-feng; Guo Jing 
2010 
1 
Transactions of Nonferrous Metals Society of China
ISSN: 1003-6326 
20 
12 
2392-2396 
WOS:000285966700031 
Dephosphorization behavior of monazite concentrate with charred coal at high temperature was investigated. It is found that the roast temperature is the main factor for the dephosphorization of the monazite. The high dephosphorization efficiency can be reached at the temperatures ranging from 1 200 to 1 400 degrees C. When the monazite pellets, made by pressing mixture of the monazite, charred coal and water into mould, were roasted at 1 400 degrees C for 2 h, 98% of phosphorus was removed from the monazite pellets. The roast time has little effect on the dephosphorization efficiency. Meanwhile, the particle size of the charred coal also has great influence on the dephosphorization efficiency of the monazite, and it is better to control particle size around 150 mu m, while Fe and Fe(2)O(3) have neglectable effect on the dephosphorization of the monazite. 
dephosphorization; monazite concentrate; charred coal; high temperature