求翻译：本机械是普遍使用的建议铸砂处理机械，利用高速回转下的梳状钢片抛射铸砂，同时分解烧结砂块，去除夹杂物，而给新铸砂适当的通气性。是什么意思？

This machinery is generally recommended to use casting sand processing machinery, comb-like steel under high-speed rotary projectile casting sand and decomposition of burning sand, removal of inclusions, and give new casting sand appropriate ventilation.