High quality asphalt production from Ammann

First published in CONEXPO-CON/AGG Preview News - January 27, 2020

Ammann is offering a new continuous plant designed for the North American market

Ammann claims that its ACP 300 ContiHRT continuous asphalt plant offers high-quality production. Designed to meet the needs of the North American market, the ContiHRT is capable of producing high-quality mix with more than 60% recycled asphalt (RAP). The new plant features Ammann’s novel recycling technology, already proven worldwide, which maximises RAP utilisation and meets the world’s most stringent emissions guidelines. The gentle pre-heating of the RAP, compared to traditional cold feed to superheated virgin aggregates, prevents thermal stress on the asphalt concrete (AC) content and ensures a highly homogenous final mix. That process also minimises fuel burn and reduces the levels of CO2 and other pollutants.

The plant incorporates a RAP dryer for the addition of recycled materials and a separate cold recycling feed. The plant is capable of incorporating shingles, liquid additives, fiber granulate and foam AC. It can access a recycling system for RAP utilisation up to 60%; a separate cold recycling system for 30%; or a combination of the two. The ACP 300 ContiHRT can also produce high amounts of mix without any RAP. Warm mix can be produced with or without RAP. Continuous production capacity is 300tonnes/hour.

The system utilises proven technology and is also said to address the need to reduce emissions. Additional plant innovations include the proprietary as1 Control System. This advanced system provides data that enables high production while optimising the use of fuel and aggregates.

The proprietary as1 Control System, the brains of the ACP 300 ContiHRT, is operating in hundreds of plants around the world.

A unified service platform and stairway concept allows access to the major asphalt components, including core parts such as burners, drums, filters and the twin-shaft mixer.

Installation and relocation is said to be quick and uncomplicated. The horizontal design ensures fast and easy assembly and disassembly. Optional quick cabling and steel skids further speed the relocation process.

A wide range of optional equipment is available. It includes burners for light oil, natural gas and LPG; storage silos of 330tonnes in two compartments or 660tonnes in four compartments, which are available as long-term storage solutions; and AC tanks with superior insulation, a filling pump and tank-to-tank pumping and circulation. Cold feed system options include additional feeders, vibrators and gravimetric dosing.