CR Minerals confirms plant expansion tripling natural pozzolan output

Sources: CR Minerals Co., Fort Worth, Texas; CP staff  

The largest processor of raw natural pozzolans for performance mixes and Class F fly ash substitution will invest more than $10 million over a three-year period to increase capacity at a Pueblo, Colo. operation dedicated to concrete and oil & gas grades. CR Minerals aims to more than triple production capabilities of its Tephra NP, OG and (remediated fly ash) RFA pumiceous materials. 

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Charah lands 2M-ton ash processing contract in Southeast

Sources: Charah Solutions Inc., Louisville, Ky.; CP staff

A Southeastern utility has tapped Charah Solutions for a Closure by Removal impoundment project encompassing upward of 100 acres of ash deposits at a coal-fired power station that was retired in 2015. Work will include installation of environmental controls plus rail infrastructure improvements and extension, along with loadout area construction. Over a multi-year contract, Charah anticipates processing of 2 million-plus tons of impounded material for beneficial use as concrete-grade fly ash, while preparing the former pond acreage to be restored as usable property. 

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Chemists pinpoint green method to separate coal ash minerals, elements

Source: Elixsys Inc., Aiken, S.C. 

Chemical specialist Elixsys reports successful laboratory extraction of industrial-grade compounds from power generating stations’ coal combustion products (CCP). Through methods exhibiting “zero waste and environmental impact” and marketing agreements in place or progress, the company plans to bring finished materials to construction and industrial supply chains.

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Utility weighs 2 million ton fly ash processing project

Sources: Georgia Power, Atlanta; CP staff

Georgia Power is reviewing beneficial reuse prospects for upwards of 2 million tons of coal ash at Plant Mitchell, a retired generating station near Albany, Ga. A forthcoming contract will mark the first time in the state where coal combustion residuals from existing ponds are excavated and converted to ASTM C 618-grade fly ash.

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Entergy ash contracts hold 2 million tons’ potential for Charah Solutions

Sources: Charah Solutions Inc., Louisville, Ky.; CP staff

Charah Solutions has secured a multi-year marketing contract for fly ash and bottom ash from Entergy Louisiana’s Nelson Power Plant in Westlake, plus Entergy Arkansas’ Independence and White Bluff Power Plants in Newark and Redfield. Over the next five years, the combined scope of work is anticipated to include over 2 million tons of ash sales for beneficial use, transported via truck or railcar to regional markets. The coal combustion products will be distributed throughout Charah Solutions’ MultiSource materials network of 40-plus nationwide locations, with international sourcing and distribution. A unique distribution system of terminals and processing facilities, the network provides a continuous and reliable supply of supplementary cementitious materials for concrete producers and other customers. 

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Shifting production, use patterns temper fly ash, CCP recycling rates

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Supply dynamics in key regional markets, paralleling coal-fueled power plant closures, spurred an 11 percent year over year decline in fly ash consumption in concrete, according to the American Coal Ash Association’s (ACAA) just-released “Production and Use Survey” for 2018. Concrete-grade ash accounted for 12.5 million of the 59.4 million tons of coal combustion products (CCP) beneficially used last year, the latter figure down 8 percent or 9.1 million tons from the 2017 ACAA survey. Use of all grades of CCP in cement production declined 26 percent in 2018, to 6.4 million tons.

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Logistics challenges temper fly ash consumption, CCP recycling rates

Sources: American Coal Ash Association, Farmington Hills, Mich.; CP staff

Supply dynamics in key regional markets, primarily linked to coal-fueled power plant closures, spurred an 11 percent year-over-year decline in fly ash consumption in concrete, according to the American Coal Ash Association’s (ACAA) just-released “Production and Use Survey” for 2018. Concrete-grade ash accounted for 12.5 million of the 59.4 million tons of coal combustion products (CCP) beneficially used last year; use of all CCP grades in cement production dropped to 6.4 million tons, off 26 percent from 2017 levels.

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Charah, utility extend ash management contract for two Ohio power plants

Source: Charah Solutions Inc., Louisville, Ky.

Charah Solutions has secured a byproduct sales and material handling contract extension for the Luminant Miami Fort and Zimmer power plants in southern Ohio. It will continue to manage and market the facilities’ coal combustion products, including all specification grade Class F fly ash. 

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New test stands to increase fly ash marketers’ raw feed sources

Penn State University Department of Civil and Environmental Engineering researchers’ “Evaluation of Two-Atmosphere Thermogravimetric Analysis for Determining the Unburned Carbon Content in Fly Ash” has received the 2019 Outstanding Article Award by the ASTM International Journal of Advances in Civil Engineering Materials.

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Researchers’ new LOI measurement increases fly ash supply

Sources: Penn State University, State College; CP staff

Penn State University Department of Civil and Environmental Engineering researchers’ “Evaluation of Two-Atmosphere Thermogravimetric Analysis for Determining the Unburned Carbon Content in Fly Ash” has received the 2019 Outstanding Article Award by the ASTM International’s Advances in Civil Engineering Materials journal.

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