Study on the Effect of Ultrasonic Cleaning on Quartz Sand Particle Size and Whiteness

The ultrasound machine was used to clean the wet quartz sand with different particle size from Fengyang county under different conditions. The result indicated that the particle size of quartz sand turned thinner,and whiteness turned whiter,the 80-100 mesh quartz sand changed most. During the laundering,the parameters of ultrasonic frequency,ultrasonic power,oxalic acid concentration,quartz sand particle size,cleaning time,cleaning temperature,stirring speed all had influences to the particle size and whiteness of quartz sand. Ultrasonic frequency and oxalic acid concentration had the most influence to experimental result. The SEM was used to analyze the morphology of the quartz sand before and after cleaning. The result showed that the impurity particles absorbed on the surface of quartz sand after cleaning was obviously decrease than before,Quartz sand particles which had cracks in was crushed. There are many micro pits on the surface of quartz sand after cleaning. These phenomena proved that ultrasonic cleaning had the crushing effect on quartz sand,which make the particle size and whiteness of quartz sand change. The experimental data showed,in the conditions of ultrasonic frequency( 20-40 kHz) and ultrasonic power( 180-300 W),particle size of quartz sand reduced 1. 15%-5. 69%,and its whiteness increased 2. 01%-6. 98% by ultrasound.