Astec Double-Barrel XHR plant processes more RAP, addresses future admissions concerns

Astec’s Double-Barrel XHR plant provides more use of recycled asphalt planings (RAP) today – and helps meet emissions standards of the future. The Double-Barrel XHR is built on previous technology, said Malcolm Swanson, President of Astec, a subsidiary of Astec Industries Inc. But the Double-Barrel XHR plant also features new improvements, including a stainless steel drum and combustion flighting, that withstand the higher temperatures associated with RAP.
January 6, 2017 Read time: 2 mins
The Double-Barrel XHR plant does not require a separate RAP dryer.

Astec’s Double-Barrel XHR plant provides more use of recycled asphalt planings (RAP)  today – and helps meet emissions standards of the future.

The Double-Barrel XHR is built on previous technology, said Malcolm Swanson, President of Astec, a subsidiary of 681 Astec Industries Inc. But the Double-Barrel XHR plant also features new improvements, including a stainless steel drum and combustion flighting, that withstand the higher temperatures associated with RAP.

“The biggest benefits to the plant are its flexibility and emissions,” said Malcolm Swanson, president of Astec, a subsidiary of Astec Industries Inc.

The potential emissions reductions result from Astec’s elimination of a separate dryer for RAP. Swanson said that is significant because emissions that come from those dryers are increasingly facing scrutiny. The Double-Barrel XHR does not require that separate dryer, and therefore does not have the resulting emissions.

“Separate RAP dryers likely will need more pollution controls in the future,” Swanson said. “With this plant, you don’t have those emissions.”

V flights and their efficient heating of materials are among the key factors enabling elimination of the separate RAP dryer, he said.
The flexibility, meanwhile, means plant use of RAP can range from none to 65 per cent, Swanson said.

For more information on companies in this article

Related Content

  • It's all about profit, people and the planet
    February 18, 2025
    Sit in on our latest roundtable discussion on sustainability in the construction and aggregates industries, brought to you by Global Highways and Aggregates Business. AB editor Guy Woodford has been talking to two world-class experts: Jeremy Harsin from Cummins and Michael Gomes from Topcon. Make your planning, your workflows, your contract tenders, and your sites as sustainable as possible. “Sustainability is really about profit, people and the planet,” say our experts. “Being able to drive that is the work that matters.”
    Read More
  • Future-proofing construction & quarrying equipment sustainability
    February 16, 2023
    Sustainability is a huge topic across the construction and quarrying industry – not just in terms of what can be achieved tomorrow via carbon-free hydrogen fuel cells and hydrogen internal combustion engines of machine fleets, but today, through the use of smart technology to make jobsites more efficient and sustainable by getting work done right first time, every time
    Read More
  • Meeting engine emission regulations challenges
    February 16, 2012
    New engine emission regulations pose major challenges for engine manufacturers - Geoff Ashcroft reports. The arrival of emissions regulations in January for engines over 130kW has meant that engine makers have adopted varied technologies to meet and exceed those goals. For the end user though, buying new kit that complies with Tier 4 Interim/Stage IIIB emissions regulations is likely to carry additional costs.
    Read More
  • Plant retrofit reducing odours
    September 1, 2022
    A retrofit to an Ammann asphalt-mixing plant is helping to lower odour emissions and is proving popular with those in the vicinity of the facility. An Ammann RAH100 dryer has replaced the existing component on a decades-old plant owned by Asfalt Productie Limburg (APL) in Heusden-Zolder, Belgium. The retrofit is of note as this is the first RAH100 to be employed in the country.
    Read More

Highlighted Content