Known to some as the asphalt hot mix plant, the primary operation of an asphalt batch mix plant is to make HMA, an abbreviation for hot mix asphalt (I guess now you see where the initial name is derived). Asphalt is necessary for the construction of roads and related surfaces. But have you ever wondered where it comes from or how it is created? Aggregates and bitumen are blended together inside the plant to give rise to the hot mix substance that is asphalt. This article, however, goes into a bit more detail, offering some brief insight into how the hot mix asphalt plant for sale works.
hot mix asphalt plant for sale
Components of Hot Mix Asphalt Plant
Before we get in to the whole process however, it is important to note the components of the hot mix plant, which include: cold feed bins; primary vibrating screen; charging conveyor; drying drums plus burner; bucket elevator; pre-separator with bag filter; vibrating screens; hot bins; mixing unit; bitumen tanks; weighing bins; storage silo; control panel.
Initially, raw aggregates are fed into what are known as feeder bins, which is the same as asphalt mobile plant. Each bin comes equipped with a feed gate that control the flow of aggregates. From the bin, aggregates are conveyed into drying drums that are fitted with burners that facilitate the drying of aggregates. From the heating drums, aggregates are moved to the tower unit via a bucket elevator.
asphalt mobile plant
At the towers top, screening takes place, which is done via layers of screen that separate the aggregate into different bins depending on their sizes. If it is large size asphalt plant, it should be equipped with over 3 bins. Small portable asphalt plants for sale should be equipped bins lee than large. The aggregates then have their weight taken after which they are deposited into a mixing unit with filler components and bitumen. Where does the bitumen come from you wonder? From the bitumen tanks that heat and store it up. They are equipped with pumping mechanisms that pump the bitumen to a weighing station where it weighed before discharge into the mixer.
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Filler components are then added in a separate unit, pumped to where they are also weighed then added to the mixer. Mixing normally takes place for a prescribed period after which the asphalt is deposited into waiting transportation or into silos for temporary storage. The mixers are normally thoroughly insulated to ensure the contents retain their heat. More information: https://medium.com/@concretemixerandpump/brief-introduction-about-the-asphalt-hot-mix-plant-a330bc7806d7.
Hot mix plant are constructed to be as environmental friendly as possible. This is done via bag filter and pre-separator units. The pre-separator units are necessary for the containment of heavy dust. The bag filter on the other hand consists of bags within close proximity of each other within a chamber that is closed. As gas gets sucked from the heating drums, and is passed through the chamber, most of the pollutants will get trapped within the bags thus to an extent, filtering the air of a majority of polluting agents.
asphalt mixing plant
All the operations within the plant are controlled by an operator via the control panel. Most of the operations are autonomous just like asphalt mixing plant, but human intervention may still be required every now and then. The unit is highly advanced, which means only qualified personal can interpret and use it. All the operations are present in a lay out that is easy to interpret.