In stone crushing line, crusher crushes materials with squeezing that may produce dust and pollute environment and do harm to health. Thus we should pay attention to this over dust condition. The measures are as follows.

1. Source governance; transforming unreasonable production technology, eliminating pollutant machine with new technology, machine, and simple screen technology.

2. As to the features of dust production, we should firstly seal the feeding and loading material places and then purify dust air with pulse bag filter. Wet crushing and screening technology is an effective way in reducing dust pollution.

3. In stone crushing line process, huge crushing ratio crusher can replace the traditional multi-stage crushing process with heavy hammer crusher. In screening, screen times are reduced with multi-level and huge capacity screener.

4. In stone transportation, better sealing performance transportation should be adopted to reduce dust overflow and increase the flexibility of the entire configuration.

5. In loading material, you should consider its angle and height and try to set a separation levee to ensure smooth material flow and less dust to protect environment and human health.