D&G machinery‘s asphalt mixing plant burner can support multiple portfolio for energy solution: Single or integrated Heavy Oil/Diesel/Gas/Coal burner，customer can choose most economic way as practical need. If choose coal burning system, you must sure that you can purchase the specified coal. 1. The requirements of coal: 2. Heat value: 5000-6300kcal/kg 3. Volatile content: >37% 4. Water content: <2% 5. S content: <1% 6. The coal for use must be crushed by primary coalcrusher into powder with the grain size<5mm, no metal and other materials.