高磷铁矿球团气化脱磷影响因素研究  

Influencing Factors for Gasification Dephosphorization of High-Phosphate Iron Ore Pellets

作　　者：郭园征 李杰 李飞 李大亮 刘文强 程扬 GUO Yuan-zheng;LI Jie;LI Fei;LI Da-liang;LIU Wen-qiang;CHENG Yang(College of Metallurgy&Energy,Key Laboratory of Modern Metallurgy Technology,Ministry of Education,North China University of Science and Technology,Tangshan 063210,Hebei,China;Shanxi Jianlong Industry Co Ltd,Yuncheng 043801,Shanxi,China)

机构地区：[1]华北理工大学冶金与能源学院教育部现代冶金技术重点实验室,河北唐山063210 [2]山西建龙实业有限公司,山西运城043801

出　　处：《矿冶工程》2020年第6期71-74,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51974131);河北省优秀青年科学基金(E2018209248)。

摘　　要：通过XRD衍射仪分析了高磷铁矿中磷的赋存状态,并结合FactSage 7.2热力学分析结果,采用配料造球、球团焙烧等手段,探究了不同配碳量、温度和焦粉粒度对高磷铁矿球团气化脱磷的影响规律。结果表明:高磷铁矿中磷的存在形式为Ca5(PO4)3F,加入0.8%SiO2和1.6%CaCl2作为混合脱磷剂,在焙烧温度1 250℃、配碳量8%、焦粉粒度0.074~0.15 mm时,气化脱磷率达24.1%。The occurrence state of phosphorus in high-phosphorus iron ores was analyzed by X-ray diffractometer based on the FactSage 7.2 thermodynamic analysis results, and effects of different carbon content, temperature and particle size of coke powder on the gasification dephosphorization of phosphate iron pellets were explored by using methods of batching, pelletizing and pellet roasting. Results show that phosphorus in the high-phosphorus iron ore exists in the form of Ca5(PO4)3F. It is shown that by adding 0.8% SiO2 and 1.6% CaCl2 as a mixed dephosphorizer, the roasting process at 1 250 ℃ with carbon content of 8% and particle size of coke powder at 0.074~0.15 mm can lead to the gasification dephosphorization rate reaching 24.1%.

关 键 词：高磷铁矿 球团 烧结 气化脱磷 配碳量 温度 焦粉粒度 碳热还原 

分 类 号：TF046[冶金工程—冶金物理化学]