Open AccessStudy on plasma spraying graphite purification device
Author(s) -
Jinmao Li,
Chen Song,
Dandan Lu,
Huang Rui,
Zhang Hao-bo
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/772/1/012070
Subject(s) - graphite , reagent , impurity , plasma , materials science , carbon fibers , chromatography , chemistry , metallurgy , composite material , organic chemistry , composite number , physics , quantum mechanics
Given the problems in traditional graphite purification methods, such as low impurity removal efficiency; Using chemical purification method, the reagent is toxic and contaminated, which does not meet the environmental protection requirements; The physical purification method has the disadvantages of high energy consumption and high cost. The plasma spraying graphite purification method is proposed and its mechanism is studied. A prototype of the plasma spraying graphite purification device was assembled and developed. With the built purification device prototype as the research object, the state monitoring and comprehensive evaluation of the working gas flow, system working current, working voltage, carbon powder quantity, and other indicators are carried out. The change of impurity content in graphite was analyzed by the plasma spraying method under different index conditions. Experiments show that the graphite can be effectively purified by plasma spraying graphite purification method, and the carbon content is increased from 94.18% to 97.23%.