Hot mix plant for road construction or hot mix asphalt plant is called the HMA for short. It is generally equal to the asphalt mix plant. The asphalt hot mix plant is one that is used for mixing the dried and heated asphalt, aggregates and fillers (powders and cement) together to constitute the homogeneous mixture in the effect of asphalt at a certain temperature, which is common in these fields such as constructions of highway, urban road, grade highway, airport and port.
Hot Mix Plant Use
The hot mix plant use can be also described as the application of the hot mix plant, which depends on the use of asphalt to the utmost extent.
In civil engineering, asphalt is a widely used waterproof and anti-corrosion material, which is mainly used in the waterproof of roof, ground and underground structures, and the anti-corrosion of wood and steel.
In road engineering, it can be mixed with mineral materials of different composition in proportion to build asphalt pavements with different structures. Therefore, the hot mix plant for road construction has been playing a significant role with different structure such as motorway, grade highway and urban road.
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Hot Mix Plant with100-120tph
The hot mix plant for road construction with 100-120tph refers to the plant that the production of hot mix asphalt can reach 100t~120t per hour. Because the capacity of the hot mix plant 100-120tph lies between 100t/h~240t/h, it is categorized as medium-sized asphalt plant on the basis of production capacity.
And it is characterized by easy operation, modular design, low maintenance cost and high efficiency, itโs worth of owning.
Mini Hot Mix Plant For Road Construction
The mini hot mix plant for road construction refers to the small-size asphalt mixing plant. Based on the production capacity, the asphalt mixing plant is divided into: small-size, medium-size and large-size asphalt mixing plant.
The small-size asphalt mixing plant refers to the plant that the productivity is less than 80t per hour. And it has the characteristics of small module, fast installation and simple operation, and is suitable for road paving and maintenance.
Also Read: Mobile Asphalt Mixing Plant
Here is the parameters of LUTON hot mix plant for road construction.
| Model | LB500 | LB800 | LB1000 | LB1200 | LB1500 | LB2000 | LB2500 |
|---|---|---|---|---|---|---|---|
| Output | 40t/h | 60t/h | 80t/h | 100t/h | 120t/h | 160t/h | 200t/h |
| Hopper Capacity | 4ร4.5mยณ | 4ร6.5mยณ | 4ร7.5mยณ | 4ร7.5mยณ | 4ร7.5mยณ | 5ร12mยณ | 5ร12mยณ |
| Collect Belt Capacity | 60t/h | 80t/h | 100t/h | 120t/h | 140t/h | 200t/h | 220t/h |
| Dryer Size | ฯ1.2mร5.2m | ฯ1.5mร6m | ฯ1.5mร6.7m | ฯ1.65mร7m | ฯ1.8mร8m | ฯ2.2mร9m | ฯ2.6mร9m |
| Dryer Capacity | 60t/h | 80t/h | 100t/h | 120t/h | 140t/h | 180t/h | 240t/h |
| Vibrating Screen | 4 layer | 4 layer | 4 layer | 4 layer | 4 layer | 5 layer | 5 layer |
| Aggregate Metering hopper | 500kg | 800kg | 1000kg | 1300kg | 1500kg | 2000kg | 2500kg |
| Mineral Flour Metering Hopper | 120kg | 150kg | 200kg | 200kg | 300kg | 300kg | 320kg |
| Mixer Capacity | 500kg | 800kg | 1000kg | 1250kg | 1500kg | 2000kg | 2500kg |
| Cycle Time | 45s | 45s | 45s | 45s | 45s | 45s | 45s |
What is the difference between Hot Mix Plant and Drum Mix Plant
Drum mix plant works on similar principle as asphalt batch mix plant, but the main difference is that drum mix plant does not have tower consisting of vibrating screen, hot bin, pug mill mixer and hot aggregate elevator.
How Hot is Asphalt
When the temperature is 30 โ and the sun is direct, the surface temperature of the completed asphalt pavement can reach 60 โ, which will burn your feet. If the asphalt in construction has been heated and is ready for use, it is 130 to 180 degrees.
When the asphalt concrete leaves the factory, it is 150 to 180 degrees. Before paving, the temperature of asphalt is 130 โ to 170 โ. The temperature of asphalt just after rolling is 60 โ to 80 โ.
How does a Hot Mix Asphalt Plant Work?
After the central control room sends the boot command, the cold materials in the cold bin are first transported to the drum dryer through the belt conveyor. Then the aggregates dried are transported to the vibrating screen for screening via the hot material elevator, and the screened aggregates fall into each hot aggregate bin.
Next The powders and screened aggregates drop into the corresponding weighing hopper from the outlet of the respective storage bins, are measured by the electronic scale, and are dropped into the mixing tank. Last the weighed hot asphalt is also sprayed into the mixing tank.
After various mixtures are fully mixed, the finished asphalt mixture is produced and itโs unloaded into the hopper car. It is unloaded into the asphalt mixture storage bin through the track, and finally the finished materials are placed on the transport vehicle through the unloading gate.
