Removal of Phosphorus From High Phosphorus Iron Ores by Selective HCl Leaching Method
Removal of Phosphorus From High Phosphorus Iron Ores by Selective HCl Leaching Method
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DOI：
10.1016/s1006-706x(11)60055-1
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发表时间：
2011-05
影响因子：
2.5
通讯作者：
Wen-tang Xia;Zheng-de Ren;Y. Gao
中科院分区：
文献类型：
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作者：
Wen-tang Xia;Zheng-de Ren;Y. Gao
采用选择性HCl浸出法去除高磷铁矿石中的磷。高磷铁矿石中的羟基磷灰石在HCl浸出过程中转化为可溶性磷酸盐。研究了反应时间、粒度、盐酸浓度、反应温度、液固比和搅拌强度对脱磷率的影响。结果表明，反应时间30~45 min、粒径<0. 147 mm、盐酸浓度2. 5 mol/L、反应温度25 ℃、液固比5:1、搅拌强度5. 02~12条件下，脱磷率可超过98%。 76 s− 1、经过脱磷反应，铁矿石中磷含量完全符合钢铁生产要求。
The selective HCl leaching method was used to remove phosphorus from high phosphorus iron ores. The hydroxyapatite in high phosphorus iron ores was converted into soluble phosphate during the process of HCl leaching. The effects of reaction time, particle size, hydrochloric acid concentration, reaction temperature, liquid-solid ratio and stirring strength on the dephosphorization ratio were studied. The results showed that the dephosphorization ratio can exceed 98% under the conditions of reaction time 30–45 min, particle size< 0. 147 mm, hydrochloric acid concentration 2. 5 mol/L, reaction temperature 25 C, liquid-solid ratio 5: 1 and stirring strength 5. 02–12. 76 s− 1. After dephosphorization reaction, the content of phosphorus in iron ore complied completely with the requirements of steel production.