中南大学学报（自然科学版）2016，Vol.47Issue(7)：2181-2188,8.DOI:10.11817/j.issn.1672-7207.2016.07.001
煤沥青型焦制备与固结机理
Preparation and mechanism of formed coke with coal tar pitch as binder
摘要
Abstract
Preparation and mechanism of formed coke with coal tar pitch as binder were studied. The results show that assistant reagent BJ can excite the activity of aromatic compounds of coal tar pitch and make coal tar pitch have the cold state cohesiveness, which realizes briquetting of coke breeze at room temperature without heating process. The drop resistance of the wet briquette is 50 times per 2 m. Filling material of ultrafine particle can fill the pore produced by shrinkage of coal tar pitch, enrich the skeleton of coal tar pitch, intensify carbonization consolidation of formed coke, and improve the strength of formed coke. The best thermal decomposition rate and thermal decomposition rate of coal tar pitch appear at 336℃and 629℃, respectively. The compressive strength of formed coke volatilized at 370℃for 15 min and carbonized at 550℃for 30 min is 20 MPa. Through volatilization and carbonization, the molar rate of C and H in coal tar pitch increases from 1.69 to 2.80 and molar rate of C and O decreases from 91.77 to 67.23. The formed coke is composed of C and small amount of O. Carbonization skeleton is formed which makes coal tar pitch firmly bond particles of coke into briquette, which leads to compact structure and good uniformity of formed coke.关键词
煤沥青/型焦/炭化骨架/固结机理Key words
coal tar pitch/formed coke/carbonization skeleton/consolidation mechanism分类
矿业与冶金引用本文复制引用
杨永斌,钟强,姜涛,李骞,徐斌..煤沥青型焦制备与固结机理[J].中南大学学报（自然科学版）,2016,47(7):2181-2188,8.基金项目
Foundation item)国家自然科学基金资助项目(51074182，51234008)(Projects(51074182，51234008) supported by the National Natural Science Foundation of China) （51074182，51234008）
