Stationary Asphalt Plant

The CONSTMACH Stationary Asphalt Plant is a fixed batch-type hot-mix asphalt facility designed for permanent installation at sites with long-term, high-volume production requirements. It is part of the Asphalt Plant product group and is intended for road construction, highway maintenance, and infrastructure projects supplied from a central production point. Because it is installed on a permanent foundation, the plant can be configured at full scale with large storage and high-capacity equipment, prioritising sustained output and consistent mix quality over relocation.

As a batch-type (tower) plant, it produces asphalt in measured batches through a controlled, repeatable cycle. Cold aggregate of several sizes is stored in cold-feed bins and metered onto a feed conveyor in the proportions required by the recipe. The aggregate then passes through a rotary dryer drum, where a burner heats it to the target temperature and removes moisture, which is essential for proper bitumen adhesion in the finished mix.

The heated aggregate is carried by a hot elevator to the top of the batch tower, where a multi-deck vibrating screen separates it into size fractions that are held in hot-aggregate storage bins. For each batch, the required quantity of each fraction is drawn into a weigh hopper and weighed, while mineral filler from the filler silo and hot bitumen from the bitumen system are weighed separately. The weighed materials are discharged into a twin-shaft pugmill mixer, which blends them into a uniform hot mix in a short cycle before the batch is released.

The finished asphalt is delivered to a hot-mix storage silo or loaded directly into trucks. Supporting systems include the bitumen tanks with heating, the mineral-filler supply, and a dust-collection (baghouse) system that captures fines from the dryer exhaust gases and returns them to the process or to a reject silo, helping to control emissions. An automated control system manages the feeding, drying, screening, weighing, and mixing sequence and monitors mix temperature and component proportions so that each batch conforms to the specified recipe.

The plant processes mineral aggregate, mineral filler, and bitumen into hot-mix asphalt. CONSTMACH manufactures batch-type asphalt plants across a broad range of hourly capacities to match different project sizes, and stationary configurations are typically selected where a high, steady output is required from a single location. Exact capacity, the number of cold-feed and hot bins, screen decks, mixer size, and silo volume are configured to the production target for the site.

Core components include the cold-feed bins and feeders, the rotary dryer drum and burner, the hot elevator, the screening unit and hot-aggregate bins, the weigh hoppers for aggregate, filler, and bitumen, the twin-shaft pugmill mixer, the bitumen tanks and heating system, the mineral-filler silo, the dust-collection system, and the hot-mix storage silo, integrated with the control room. Each component is sized for continuous, high-capacity operation.

Compared with a mobile plant, the Stationary Asphalt Plant trades transportability for scale and permanence: it is fixed to a prepared foundation and is intended to remain in place, supplying asphalt to a region or a series of projects over a long period. It provides the same accurate, recipe-driven batch production as the mobile version, with the larger storage and equipment typical of a permanent central facility.