Hot Mix Plant

Hot mix bitumen is used primarily as paving material and consists of a mixture of aggregate and liquid bitumen, which are heated and mixed in measured quantities. Hot mix asphalt facilities can be broadly classified as either drum mix plants or batch mix plants, according to the process by which the raw materials are mixed. In a batch mix plant, the aggregate is dried first, and then transferred to a mixer where it is mixed with the liquid bitumen. In a drum mix plant, a rotary dryer serves to dry the aggregate and mix it with the liquid bitumen. The use of drum mix plants in bitumen paving industry has gained wide spread acceptance. Drum mix plants can produce uniform bitumen mixtures when operated properly. The Purpose or function of a bitumen hot mix plant is to blend together aggregates and binder, normally bitumen emulsion, to produce a hot mixed homogeneous bitumen paving mixture. The aggregate can be a single material or can be a combination of coarse and fine particles with or without mineral filler. The bitumen hot mix plant is mainly composed of cold aggregate supply system, drum dryer, LDO burner, dust collector, hot aggregate elevator, vibrating screen, filler supply system, weighing and mixing system, asphalt storage, bitumen supply system.