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 1360 ℃ for 40 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.%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、1360℃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.
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