摘要
研究了碱浸出过程中的影响因素,考察了浸出温度,NaOH溶液的浓度,以及物料粒度和液固比等因素对于浸出效果和回收率的影响.得到了碱浸阶段适宜的工艺条件为:溶液中NaOH的质量分数为15%、浸出温度100℃、浸出时间6 h、液固比20 mL/g、钛渣粒度小于38μm,搅拌速度500 r/min.采用三段浸出的方法获得了品位为91.42%,回收率为78.47%的人造金红石产品.
The effects of concentration,temperature,reaction time,particle size,liquid-solid ratio and stirring speed on the TiO2 content and the recovery ratio were studied in the alkali leaching process.The authors obtained the appropriate conditions： the concentration of NaOH is 15%,the leaching temperature is 100 ℃,the leaching time is 6 h,the liquid-solid ratio is 20,titanium particle is 38 μm,stirring speed is 500 r/min.The synthetic rutile products were obtained through the three-stage leaching method.The grade is 91.42%,the recovery ratio is 78.4%.
出处
《材料与冶金学报》
CAS
2011年第3期184-188,共5页
Journal of Materials and Metallurgy
关键词
改性钛渣
碱浸酸洗
浸出
氢氧化钠
金红石
modified titanium slag
alkali leaching and acid washing
leaching
NaOH
rutile
