There are many factors affecting the production efficiency and quality of asphalt mixing plant, the following are the nine factors, such as model, number of cold silos, aggregate heating method, dust removal efficiency, asphalt storage, weighing system, mixing time, storage of finished materials, as well as intelligent monitoring.
Product model
Today’s highways are mostly more than 6 lanes in both directions, and the unit output is high, generally requiring the configuration of 5000 types, and the output can reach 350-400 tons/hour.
The number of cold silos
It generally has 6 silos, which can be more subdivided into multiple ingredients and increase the stability of the mix ratio. more details of silos for small plant, visit: https://ltasphaltplant.com/small-asphalt-plant/
Aggregate heating method
The traditional heating method is heavy oil heating. Nowadays, in order to meet the environmental protection requirements, it generally requires the use of natural gas heating, which has the advantages of environmental protection and high thermal efficiency, but the production cost is the highest. In order to save cost, many projects use high calorific value pulverized coal to heat aggregate by vaporizing and re-burning in field vaporizer, which is low cost and high efficiency, but high safety requirements. When natural gas and pulverized coal are fueled by oil, production can be increased by about 20 tons/hour.
Dust removal efficiency
each asphalt station should meet environmental protection requirement, and the bag dust is clean, which can effectively improve the stability of the mix.
Asphalt storage
The asphalt is stored in the asphalt tank on site, and the mixing device should be installed in the asphalt tank to prevent the segregation of modified asphalt. The heat transfer oil is used to heat the asphalt and heat it to the temperature that meets the design requirements, so as to ensure the fluidity, coating and stability of the asphalt.
Weighing system
Weighing system includes aggregate weighing, powder weighing, asphalt weighing, accurate weighing, small error, in order to ensure the stable and uniform performance of each pot of asphalt mixture.
Mixing time
Each pot mixing time must be fully stirred according to the mix ratio design requirements, no knot unity, no white material, no segregation, etc.
Storage of finished materials
In order to ensure continuous production, about 200 tons of insulated finished products should be configured, which can be stored in advance in the case of discontinuous transport vehicles to avoid downtime, and the start-up process of the asphalt station is complicated, and the minimum waste of 30 minutes is wasted each time. The separation of the mixture can also be reduced after the short storage of the finished product bin and then into the transport vehicle.
Intelligent monitoring
Most project factory have introduced a smart system, which can monitor each production link of the asphalt mixing plant in real time, respond to abnormal problems, which is conducive to timely discovery and solution of problems.