硫铁矿和磷石膏反应过程的熔融特性研究  

Research on melting characteristics of pyrite and phosphogypsum reaction process

作　　者：王俊哲[1] 邓少刚[1] 张志业[1] 杨林[1] 钟本和[1] 杨秀山[1] 孔行健[1] 王辛龙[1] 周学克 阮永刚 

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]云南云天化股份有限公司云峰分公司,云南宣威655413

出　　处：《磷肥与复肥》2015年第3期11-13,共3页Phosphate & Compound Fertilizer

基　　金：国家高技术研究发展计划(2011AA06A106)

摘　　要：为探讨硫铁矿还原磷石膏制酸生产中回转窑内结圈和粘结堵塞等问题的主要因素,以硫铁矿和CaSO_4为原料,采用微机灰熔融性测定仪研究了不同添加剂对FeS_2与CaSO_4固-固反应中熔融特性温度的影响。结果表明,要提高硫铁矿与磷石膏反应的熔触特性温度,应降低原料中SiO_2、AiPO_4、FePO_4·2H_2O、K_2SiF_6的含量。In order to explore the main factors of the problems such as bonding and blocking ect.in rotary kiln for sulfuric acid production with pyrite and phosphogypsum as raw materials,the effects of additives on the melting softening temperature in the FeS_2 and CaSO_4 solid-solid reaction are investigated by ash melting point measuring instrument.The results show that,the contents of SiO_2,A1PO_4,FePO_4 · 2H_2O,K_2SiF_6 in material should be decreased to improve the melting temperature of pyrite and reaction process phosphogypsum.

关 键 词：硫铁矿 磷石膏 熔融特性 添加剂 软化温度 

分 类 号：TQ126.35[化学工程—无机化工]