Drying & Mixing Unit
The Drying and Mixing unit of the asphalt drum mix plant demands complex flight design and heat transfer technology.
With our passion to build the best asphalt plants, continuous R & D, and incorporation of the latest design up-gradations.
The SAPE thermodrum unit follows a triple heat transfer system that ensures a total transfer of heat to the aggregates, translating into higher productivity and lower fuel consumption.
The heat is transferred to the aggregates using the conductive, connective, and radiation techniques. The field-proven unique flight design ensures total heat transfer, a thorough mixing & coating, lower emissions, and prevention of bitumen oxidation.
Drum Mechanics
The 30-120 Tph asphalt drum mix plants are supplied with a low maintenance cradle type drum drive.
The auto lubrication system of the asphalt plant ensures proper and adequate lubrication on the chain drive thereby ensuring the long life of the machine with trouble-free service.
Optionally a four-wheel friction drive, which is a standard on the 120 Tph and higher models, can be supplied.
Specially treated sprockets, thrust wheels, trunion rings & trunnion rollers, engineered precisely for flawless and trouble-free dryer drum rotation, ensures unlimited productivity of the asphalt mixing plant.
Cold Aggregate Four Bin Feeder
At the bottom of bins, adjustable gates are provided to regulate the flow of aggregate with four auxiliary conveyors.
Gathering conveyor is equipped with a scraper and driven by A.C. Motor.
Aggregate from the Gathering conveyor is fed into the drum by a slinger conveyor through a vibrating screen.
Bitumen Tank (Direct Heating System)
Bitumen tanks are supplied of “U”-shaped horizontal in position with capacity range from 10 tons to 50 tons.
An oil-fired auto control pressure jet burner is mounted on each tank to heat the bitumen to achieve the desired temperature.
In this direct-heating type tanks, the bitumen is heated by firing the burner into a heating coil made of steel pipes. The tanks are fully insulated to minimize heat loss.
Burner
A high-pressure jet burner is capable of heating the aggregate to the required temperature without any unburnt fuel or carbon residue on the aggregate and to reduce the moisture content of the aggregate to a minimum.
The unit is also with a suitable type of thermometric instrument fitted at proper places so as to indicate the temperature of exhaust gases, bitumen, and mixture.
For pressure Jet burner a suitable Fuel storage tank with a fuel transfer pump is provided.
The low noise burner has sufficient capacity to cover the entire range of thermal energy required for drying the aggregates with various types of fuel.
Mineral Filler Unit
For addition of dust or mineral to the mix material in the mixing zone of the drying and mixing unit. It is provided with a rotary valve driven by A. C. /D. C. motor.
Filler material is conveyed to the drum through the drum through a pipe by suitable twin lobe compressor The inlet of mineral is adjacent to the bitumen line in the Drying drum.
Load Out Conveyor
The aggregate discharged from the drying drum is collected into a heat resistant belt supported by inclined load out conveyor equipped with GOB hopper with hydraulically operated cam shell gate to provide surge capacity when changing trucks and to control segregation in the hot mix.
Hydraulic Power Pack is for hydraulic opening and closing of the hopper gates. The storage capacity of GOB hopper ranges from 1 to 1.5 T depending on the model of plant.
Electrical Control Cabin
Fully computerized cabin with on board electric power console, distribution, switch board, fully automatic processes are a standard on SAPE DM Series plants.
User friendly software ensures top notch performance. Display of the entire process control parameters.
Provision to store, edit production details, mix proportions, etc is possible. Panel enables the plant to run in Auto & manual mode.
Technical Specification
