Boral adds PMI Ash beneficiation technology

Sources: Boral North America, Atlanta; CP staff

The leading manager and marketer of coal combustion products has acquired the Carbon Burn-Out (CBO) technology of PMI Ash Technologies LLC in Raleigh, N.C. The CBO process brings the quality of fly ash produced at coal-fueled electric generating stations to ASTM C618 grade, and can also be used to cost-effectively convert impounded ash to high quality pozzolan for concrete applications.

“This acquisition demonstrates Boral’s commitment to maintaining the largest and most robust fly ash supply chain in the United States,” says Boral Coal Combustion Products Vice President of Business Development Steve Benza. “CBO helps us continue to provide utility clients with effective tools for ensuring beneficial use of their coal ash, while providing concrete producer customers with high quality, reliable sources of pozzolans.”

“The CBO technology is an ideal addition to our portfolio of solutions for expanding the national supply of high quality ash,” adds Vice President of Technology Rafic Minkara, Ph.D., P.E. “No other company is able to offer the range of technologies and strategies that Boral can deploy, ensuring that our clients each receive the best solution for their unique ash management challenges.”

PMI’s technology has been fully commercial since 1999, with four installations that boasted a combined processing capacity of approximately 1 million tons per year. CBO combusts residual carbon in fly ash, producing a very consistent, low carbon, high-quality pozzolan. The process is continuous, fueled by the residual carbon in the ash, and returns recovered heat to the power plant. It joins these Boral ash quality improvement technologies: ASM Ammonia Slip Mitigation; RestoreAir/PACT Passivation of Carbon in Ash; SorbSensor Instrumentation for Ash Quality; and, P2 Performance Pozzolan (blended ash product).


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