Burning system of asphalt mixing plant occupies a pivotal position in the asphalt mixing plant, its performance directly affects the economy of asphalt mixing equipment, stability and safety. At present, Europe and other developed countries, gas-fired combustion system is often used, but often expensive and cannot achieve higher economic efficiency. At present, form, combustion system of asphalt mixing plant in China there are three: using coal as fuel, with fuel as fuel and gas as fuel.

Coal as fuel for combustion system of asphalt mixing plant, the problem is: coal ash is a non flammable material contained in, the heating system of asphalt mixing plant, most of the ash into asphalt mixture. But ash is acidic and will directly reduce the quality of asphalt mixture, this does not guarantee the service life of the asphalt. Meanwhile, slower pulverized coal combustion, burning within a short time difficult, resulting in fuel and energy utilization remains relatively low. Secondly, mill equipment, traditional crafts, coal-fired heating system through the regulation of coal to control the size of the flame, can't achieve a high precision temperature control, directly reducing the quality of asphalt mixture. Combustion of pulverized coal requires a large combustion chamber, refractory materials belonging to vulnerable devices and combustion chamber, it is necessary to regularly change, require higher maintenance costs.

For gas as a fuel burning system of asphalt mixing station, due to burning of combustible gas faster and burn very well, so energy efficiency is high. However, using gas as fuel combustion system for asphalt mixing plant also has its disadvantages, for example, it needs to be connected with the gas pipeline, it is suitable for relatively stationary asphalt mixing plant, does not apply to mobile or regular removal of asphalt mixing plant. If the gas pipe farther away from the asphalt mixing station, set valves and ancillary equipment such as pipelines requires a higher fee. For fuel as fuel combustion system for asphalt mixing plant and its comparative advantages. First reduce cost, improve economic efficiency, followed by regulating the flow of oil, and achieve the objective of stability of fuel oil temperature. Once again controlled by throttle motor return valve opening, namely the control (increase or decrease) in fuel oil, so as to receive the burning capability.