CAJ | 학술논문

针对难分解钨钽铌粗精矿的冶炼问题，采用了高压碱分解工艺，成功地实现了钨钽铌精矿中钨难分解的问题。研究针对江西某大型钨、钽铌矿床矿石重选矿泥，经选矿试验获得的钨钽铌粗精矿，探讨了NaOH加入量、Na3PO4·12H2O加入量、液固比、分解温度、分解压力、分解时间对钨分解率的影响。结果表明，NaOH加入量为理论量的1.70倍，Na3PO4·12H2O加入量为理论量的1.26倍，液固比为3，分解温度200℃，分解压力1.5 MPa，分解时间5 h，钨的分解率能达到99.84%，分解渣中WO3含量为0.16%。
침대난분해오단니조정광적야련문제，채용료고압감분해공예，성공지실현료오단니정광중오난분해적문제。연구침대강서모대형오、단니광상광석중선광니，경선광시험획득적오단니조정광，탐토료NaOH가입량、Na3PO4·12H2O가입량、액고비、분해온도、분해압력、분해시간대오분해솔적영향。결과표명，NaOH가입량위이론량적1.70배，Na3PO4·12H2O가입량위이론량적1.26배，액고비위3，분해온도200℃，분해압력1.5 MPa，분해시간5 h，오적분해솔능체도99.84%，분해사중WO3함량위0.16%。
A mechano-chemical technology was developed for the refractory tantalum-niobium-tungsten coarse concentrate adopting high pressure alkali decomposition process. Using the tungsten-tantalum-niobium rough concentrate out of the beneficiation tests in a large sized tungsten-tantalum-niobium ore, this paper studies the effects of adding amounts of NaOH and Na3PO4 ·12H2O, liquid to solid ratio, decomposition temperature, decomposition pressure and decomposition time on tungsten decomposition rate. The results show that, the decomposition rate of tungsten can reach 99.84%, 0.16%WO3 content in slag (the theoretical amount of NaOH content is 1.7 times of the theoretical amount, the theoretical amount of Na3PO4·12H2O content is 1.26 times of the theoretical amount, ratio of liquid to solid 3, decomposition temperature 200℃, decomposition pressure of 1.5 MPa, the decomposition time is 5 h).