DesuIfurization and deashing of fine coaI through magnetic separation-fIotation
WANG Yunyan
ZHU Shenhong
MA Xianjun
WANG Heng
Abstract：In order to improve desulfurization and deashing efficiency of fine coal,taking the fine coal which was prepared by jigging medi-um-sulfur Gansu coal as research object,the grinding-magnetic separation test,high precision magnetic separation test and clean coal re-flotation test were conducted. The results showed that,when magnetic flux density was 1. 57 T,pulse strength was 25 times in one minute, fine mesh wasnˊt added copper sleeve poly magnetic medium,the flotation effects was the best. The sulfur content and yield of clean coal was 1. 25% and 95% ,the loss of coal samples was the least. The reflotation test on clean coal was conducted under optimum condition, when the dosage of CaO and kerosene was 1 kg/ t and 1360 g/ t,the sulfur and ash content of clean coal could decreased to 1. 09% and 7. 54% . The desulfurization and deashing efficiency was 32. 05% and 45. 63% ,the removal efficiency of pyrite was 50. 55% . The experi-mental results showed that,the jigging-breaking-screening-magnetic separation- flotation process could reduce the sulfur and ash content of clean coal to 1. 09% and 7. 54% and improve the yield of clean coal to 86. 03% .
Keywords：fine coalmagnetic separationflotationdesulfurizationdeashing
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 36-39 )