石门磷精矿用于窑法磷酸生产原料的评价实验  

Evaluation Experiments for Shimen Phosphate Concentrate as Raw Material in Production of Kiln-Process Phosphoric Acid

作　　者：雷圣辉[1] 

机构地区：[1]长沙矿冶研究院有限责任公司,湖南长沙410012

出　　处：《矿冶工程》2017年第6期97-100,共4页Mining and Metallurgical Engineering

摘　　要：对采用焙烧-消化-分离得到的石门磷精矿进行了评价实验,结果表明,在钙硅比0.30、配碳量为理论量的1.5倍条件下配料、造球,生球抗压强度34.5 N、0.5 m落下强度大于22次,干球抗压强度203.5 N、1 m落下强度大于5.2次,球团性能良好。磷精矿在钙硅比0.37、配碳量为理论量的1.5倍、1 360℃下还原40 min,磷还原率达到96%,渣球软熔性好。实验表明,石门磷精矿是一种适合窑法磷酸工艺的生产原料。An evaluation experiment was conducted for a kind of Shimen phosphorus concentrate which was obtained after the process of roasting-digestion-solid/liquid separation. Results showed that pelletizing with calcium to silicon at a ratio of 0.30,addition of carbon at an amount of 1.5 times theoretical value,resulted in the green pellets with compressive strength at 34.5 N and drop strength over 22 times at 0.5 m,dry pellets with compressive strength at 203.5 N and drop strength at 1 m over 5.2 times,presenting a good pelletization. The reduction of phosphate concentrate at 1 360 ℃ for40 min,with calcium to silicon at a ratio of 0.37,carbon addition at an amount of 1.5 times theoretical value,led to the phosphorus reduction rate up to 96% and slag ball with good meltability. Test results indicate that Shimen phosphorus concentrate is a good raw material for kiln phosphoric acid production.

关 键 词：磷精矿 窑法磷酸 钙硅比 评价实验 还原 P2O5 

分 类 号：TF046[冶金工程—冶金物理化学]