A Concise Overview of the Asphalt Hot Mix Plant
The Asphalt Hot Mix Plant, often referred to as an asphalt batch mix plant, primarily serves the purpose of producing Hot Mix Asphalt (HMA). HMA is a crucial material used in the construction of roads and various related surfaces. Let's delve into the inner workings of this plant.
Before delving into the operational aspects, it's essential to understand the key components of the hot mix plant, which include:
The process begins with the introduction of raw aggregates into feeder bins, each equipped with a feed gate for regulating the aggregate flow. The aggregates then progress to drying drums, which feature burners to facilitate the drying process. Subsequently, a bucket elevator conveys the heated aggregates to the top of the tower.
领英推荐
At the tower's summit, screening occurs through layers of screens, segregating the aggregates into different bins based on their sizes. These aggregates undergo weight measurement before being introduced into a mixing unit, where filler components and bitumen are added. Bitumen is supplied from heated storage tanks via pumping mechanisms and is weighed before integration into the mixer.
Mixing ensues for a predetermined duration, following which the resulting asphalt mix is either directed to waiting transport or stored temporarily in silos. The mixers are typically well-insulated to maintain the mix's temperature.
Hot mix plants are designed with environmental friendliness in mind, employing bag filter and pre-separator units. Pre-separator units are crucial for containing heavy dust, while the bag filter comprises closely arranged bags within a closed chamber. As gas is drawn from the heating drums and passes through this chamber, a significant portion of pollutants is trapped within the bags, thereby filtering the air of many harmful agents.
The entire plant's operations are overseen by an operator using a control panel. While most operations are automated, occasional human intervention may be necessary. The unit is highly advanced, requiring qualified personnel for proper interpretation and operation. All asphalt manufacturing plant operations are laid out in an easy-to-interpret format.