Do you know the structure of the asphalt plant? Or do you really know the specific functions of asphalt plant components? To sum up, the asphalt plant is a complete set of equipment used to produce asphalt mixture. The asphalt plant is mainly composed of batching system, drying system, combustion system, hot material lifting, vibrating screen, hot material storage bin, weighing and mixing system, asphalt supply system, powder supply system, dust removal system, finished material bin and control system. Next, this article introduces the asphalt plant components and functions of the different components by taking the stationary asphalt batch plant.
Related: Types of Asphalt Plant, What is an Asphalt Plant
Batching System
The batching system consists of cold material hopper, cold material feeder, cold aggregate conveyor (including flat belt conveyor and inclined belt conveyor). Carry out the batching and the volume metering of aggregates with different particle size and convey them to the drum dryer.
Drying Drum
For the asphalt drum plant, the drying drum is the place where the cold aggregate is dried and heated and the mixture is mixed. For the asphalt batch plant, the drying drum is only used to dry and heat the cold aggregate. According to the difference between the inlet direction of the cold aggregate, the direction of the exhaust port and the flame direction of the burner, the drum can be divided into flame cocurrent flow drum and flame counter current drum.
The size of the drying drum is generally configured according to the standard asphalt plant, or it can be larger than the drying drum in the standard configuration. If the drying drum is larger or smaller than the standard configuration, it will affect the working efficiency of the entire asphalt mixing plant. Therefore, the customer is recommended to select a suitable one according to the standard configuration.
Combustion System
The type of burners can be selected by the customer. There are three types of burners: coal, oil and gas. The prices of the three combustion types are different, and they are selected according to the convenience of local fuel procurement.
The combustion system mainly includes drum burner, asphalt heat transfer oil pipe and heat conducting oil boiler. The burner is used to heat the cold aggregate and remove water, and the heat transfer oil pipe is used to heat the liquid asphalt to a certain temperature. And the heat conducting oil boiler provides heat for the whole combustion system.
The fuel tank can be shared with the heat transfer oil furnace or equipped separately.