CAJ | 학술논문

采用 XRD 对钠化高钙高磷钒渣（11．48％V2 O3、13．71％CaO、0．78％P2 O 5）熟料的物相组成进行了分析，并研究了钒渣熟料提钒的最佳实验参数。结果表明：在 Na2 CO3加入量相对较少时（35％），V 存在于 Na4 V2 O 7、Na3 VO4、Na1．33 V2 O 5和 NaCaVO4中，随着 Na2 CO3加入量的增加， Na4 V2 O 7和 NaCaVO4会进一步与 Na2 CO3反应转化为 Na3 VO4；钒渣熟料中 P 存在于水溶性Na3 PO4中；当实验条件如下：Na2 CO3加入量为40％，液固比为5∶1 mL／g，浸出温度为90℃，浸出时间为4 min，搅拌速度为150 r／min，高钙高磷钒渣熟料浸出率可超过90％。可见，熔融态高钙高磷钒渣氧化钠化水浸提钒的方法可行。
채용 XRD 대납화고개고린범사（11．48％V2 O3、13．71％CaO、0．78％P2 O 5）숙료적물상조성진행료분석，병연구료범사숙료제범적최가실험삼수。결과표명：재 Na2 CO3가입량상대교소시（35％），V 존재우 Na4 V2 O 7、Na3 VO4、Na1．33 V2 O 5화 NaCaVO4중，수착 Na2 CO3가입량적증가， Na4 V2 O 7화 NaCaVO4회진일보여 Na2 CO3반응전화위 Na3 VO4；범사숙료중 P 존재우수용성Na3 PO4중；당실험조건여하：Na2 CO3가입량위40％，액고비위5∶1 mL／g，침출온도위90℃，침출시간위4 min，교반속도위150 r／min，고개고린범사숙료침출솔가초과90％。가견，용융태고개고린범사양화납화수침제범적방법가행。
The mineral phases of the clinker obtaining after oxidizing vanadium slag with high contents of Ca and P are analyzed by X‐ray diffraction (XRD),and the experimental parameters of vanadium extraction are also investigated in this paper.The results show that V exists in the form of Na4 V2 O 7 ,Na3 VO4 ,Na1 .33 V2 O 5 and NaCaVO4 when the amount of added Na2 CO3 is relatively small (35%).But,with the added Na2 CO3 amount increasing,Na4 V2 O 7 and NaCaVO4 react with Na2 CO3 ,then change into Na3 VO4 .P in the clinker exists in the form of Na3 PO4 .The leaching rate of vanadium can reach above 90% under the conditions:added Na2 CO3 amount of 40%,liquid to solid ratio of 5 ∶1 mL/g,leaching temperature of 90℃,leaching time of 4 min,stirring rate of 150 r/min.Therefore,the method of extracting vanadium from molten vanadium slag with high contents of Ca and P by direct oxidation and adding Na2 CO3 and water leaching is feasible.