The amount of Asphalt emulsifier s31 is 6-8 ‰ of emulsified asphalt, that is 6-8kg emulsifier per ton of emulsified asphalt, the temperature of the emulsifier aqueous solution is controlled at 60-70 ℃. In the first use, the amount of emulsifier should be at the lower limit to ensure successful production. It is best to use 7 kg per ton of emulsified asphalt or add 14 kg per ton of water. After the production is successful, the dosage can be increased according to the actual situation. The temperature of the asphalt pump is controlled above 130 ℃ to ensure good mobility;