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针对某焙烧-磁选后的高磷铁精矿(铁品位54.92%,磷含量0.83%),采用超声波强化硫酸浸出其中的磷。试验结果表明:随着超声时间的延长,除磷率逐渐降低,当超声时间为60min时,矿石的铁品位有一定波动,但比原来都有一定程度的提高,可达到58%以上,而铁回收率会随着超声时间的延长呈下降趋势,但都在92%以上;随着矿浆浓度的增加,浸出后矿石中的磷含量也逐渐增加,当矿浆浓度低于6%时,超声波除磷效果显著,固体中磷含量都低于0.24%;铁品位呈下降的趋势,但相对铁精矿都有一定程度的提高,而铁回收率也呈波动增加趋势,从最低的91.89%上升至95.50%。
For a roasted - magnetic iron phosphate concentrate (54.92% iron grade, phosphorus content of 0.83%), ultrasonic leaching sulfuric acid leaching of phosphorus. The results showed that the phosphorus removal rate gradually decreased with the increase of ultrasonic time. When the ultrasonic time was 60min, the iron grade of the ore fluctuated somewhat, but increased to some extent than the original, reaching 58% The recovery rate will decrease with the increase of ultrasonic time, but both are above 92%. With the increase of pulp concentration, the content of phosphorus in ore increases gradually. When the pulp concentration is lower than 6% The results showed that the content of phosphorus in solid was lower than 0.24%, while the grade of iron showed a downward trend, but the iron concentrate had a certain degree of increase, while the iron recovery also increased with a rising trend from 91.89% to 95.50 %.