Harvested Fly Ash Beneficiation Using a Triboelectric Belt Separator

Kyle Flynn, ST Equipment & Technology LLC
Kamal Ghazi, ST Equipment & Technology LLC
Doug Widener, ST Equipment & Technology LLC
Abhishek Gupta, ST Equipment & Technology LLC

Description

Tribo-electrostatic separation has been used for the commercial beneficiation of coal combustion fly ash to produce a low carbon product for use as a cement replacement in concrete for over twenty-five years. With 24 separators in 18 coal-fired power plants and cement plants across the world, ST Equipment & Technology LLC’s (STET) patented electrostatic separator has been used to produce over 20 million tons of low carbon product that has been recycled for use in concrete or cement production. STET has developed and commercialized a new process for beneficiation of reclaimed fly ash from landfills and ponds that utilizes fly ash drying and deagglomeration technology together with carbon separation technology using their tribo-electrostatic separator. This fly ash beneficiation process offers both electric utility and cementitious materials customers an environmentally friendly, low-carbon emission, fly ash recycling technology which enables cost effective landfill and pond reclamation. STET has conducted pilot-scale studies using this novel process beneficiating ash from various landfills and pond sources in the US and Europe. In addition, STET has installed a demonstration plant at the Talen Energy Brunner Island power station near York PA. The authors have presented data from these studies to demonstrate the effectiveness of tribo-electrostatic process for fly ash reclamation, and the concrete performance for the low-carbon fly ash produced from this process.

 
May 15th, 9:30 AM May 15th, 10:00 AM

Harvested Fly Ash Beneficiation Using a Triboelectric Belt Separator

Grand Rapids, Michigan

Tribo-electrostatic separation has been used for the commercial beneficiation of coal combustion fly ash to produce a low carbon product for use as a cement replacement in concrete for over twenty-five years. With 24 separators in 18 coal-fired power plants and cement plants across the world, ST Equipment & Technology LLC’s (STET) patented electrostatic separator has been used to produce over 20 million tons of low carbon product that has been recycled for use in concrete or cement production. STET has developed and commercialized a new process for beneficiation of reclaimed fly ash from landfills and ponds that utilizes fly ash drying and deagglomeration technology together with carbon separation technology using their tribo-electrostatic separator. This fly ash beneficiation process offers both electric utility and cementitious materials customers an environmentally friendly, low-carbon emission, fly ash recycling technology which enables cost effective landfill and pond reclamation. STET has conducted pilot-scale studies using this novel process beneficiating ash from various landfills and pond sources in the US and Europe. In addition, STET has installed a demonstration plant at the Talen Energy Brunner Island power station near York PA. The authors have presented data from these studies to demonstrate the effectiveness of tribo-electrostatic process for fly ash reclamation, and the concrete performance for the low-carbon fly ash produced from this process.