The leaching kinetics of antimony from refractory gold ore in alkaline sodium sulfide was investigated under ultrasound. The influence of factors such as stirring speed, temperature, the concentration of sodium hydroxide and sodium sulfide and particle size, was studied. The leaching kinetics has also been studied under convention and ultrasound. The experimental data are consistent with the shrinkage core model and the leaching rate is controlled by surface chemical reaction for both ultrasonic and the conventional method. Ultrasound increases the leaching rate of antimony from 81.2% to 93.1%. It can be seen that the rate constant k_r of ultrasonic method at various temperatures is larger than that of the conventional method. The ultrasound reduces the apparent activation energy from 48.39 kJ/mol to 33.88 kJ/mol and reduces the apparent response series of sodium sulfide concentration from1.3 to 1.1. Comparing with conventional method, the ultrasound can greatly improve the antimony leaching rate, accelerate the leaching process and lower temperature and the concentration of sodium hydroxide and sodium sulfide. These advantages of ultrasonic method were also confirmed by the SEM analysis of the leached solid.

在超声波作用下研究了难处理金矿石中锑在碱性硫化钠中的浸出动力学。研究了搅拌速度，温度，氢氧化钠和硫化钠的浓度以及粒径等因素的影响。还已经在常规和超声下研究了浸出动力学。实验数据与收缩核模型相吻合，浸出速率由超声和常规方法的表面化学反应控制。超声波将锑的浸出率从81.2％提高到93.1％。可以看出，速率常数k _r在各种温度下超声方法的测量值大于常规方法。超声将表观活化能从48.39 kJ / mol降低到33.88 kJ / mol，并将硫化钠浓度的表观响应系列从1.3降低到1.1。与常规方法相比，超声可以大大提高锑的浸出率，加快浸出过程，降低温度，降低氢氧化钠和硫化钠的浓度。超声波方法的这些优点也通过浸出固体的SEM分析得到了证实。