Prepn. of defluorinated phosphate by using coal as fuel in boiling furnace

Application Number: 00115684
Application Date: 2000.05.16
Publication Number: 1323736
Publication Date: 2001.11.28
Priority Information:
International: A23K1/00;C01B25/26
Applicant(s) Name: Shan Guangyu
Address:
Inventor(s) Name: Shan Guangyu;Cao Judi;Zhang Wenlong
Patent Agency Code: 00000
Patent Agent:
Abstract The present invention relates to manufacturing method of defluorinated phosphate in boiling kiln using phosphorus ore as main raw material and coal as fuel, said product is a high quality feedstuff containing phosphorus and calcium. The exhaust fluorine containing tail gas from boiling hiln can be continuously and cyclically absorbed by limd stone, not only can make the tail gas conform with discharging requirement, the by-product can be used as a commodity, no secondary pollution. The use of boiling kiln can save investment by more than 15% compared with rotary hiln, the use of coal as fuel can save more than 30% compared with using heavy oil or natural gas.