黑龙江科技大学学报2025，Vol.35Issue(3)：429-434,6.DOI:10.3969/j.issn.2095-7262.2025.03.013
球形石墨尾料提纯的实验研究
Study on purification of spherical graphite tailing
摘要
Abstract
This paper seeks to improve the utilization rate and commercial value of graphite tallings.The study is enabled by using acid leaching alkali melting process to purify the graphite tallings;analy-zing the effects of the mixture ratio of hydrochloric acid and nitric acid,temperature,amount of NaOH,roasting temperature,concentration of hydrochloric acid and reaction time on the purification of graphite tailings;and characterizing these factors with SEM,XRD,XRF.The results show that in 2 g graphite tailing,the purity of graphite tailings increases from 92.79%to 98.8%,and the content of silica is 1.07%,under the conditions of the ratio of mixed acid and ionized water adjusted to 5∶2,the acid leac-hing temperature to 130°,1.6 g NaOH added,the roasting temperature to 500℃,the concentration of hydrochloric acid to 1.5 mol/L,and the leaching time to 2 h.关键词
石墨尾料/石墨提纯/混酸/二氧化硅Key words
graphite tail material/graphite purification/chlorohydrin/silicon dioxide引用本文复制引用
周国江,张秀阳,周扬..球形石墨尾料提纯的实验研究[J].黑龙江科技大学学报,2025,35(3):429-434,6.基金项目
黑龙江省"百千万"工程科技重大专项项目(SC2019ZX03A0034) （SC2019ZX03A0034）
