Rock Products

MAY 2019

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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66 • ROCK products • May 2019 Cemex's Clinchfield Plant Earns ISO 14001 Certification Cemex USA's Clinchfield, Ga., plant recently earned ISO 14001:2015 Certification for its environmental management system (EMS), making the plant the first Cemex cement oper- ation in the United States to reach the high achievement. "At Cemex, we operate with environmental excellence in mind, and we are always striving to improve," said Cemex USA President Ignacio Madridejos. "An effective environmental management system can help our operations build on their successes while following well-established standards. With the ISO 14001:2015 certification, our Clinchfield cement plant is setting a level of excellence that could inspire many other operations across the U.S." The International Organization of Standardization (ISO) developed ISO 14001:2015 as a standard of processes for organizations to use when setting up, improving or main- taining their environmental management systems to follow established environmental policies and requirements. The guidelines are designed to help organizations improve effi- ciency, reduce waste, improve overall environmental impact and manage environmental obligations. "Our environmental management system at Clinchfield helps drive a culture of continuous improvement and operational excellence," said Cemex USA Executive Vice President— Cement Operations & Technology Dr. Hugo Bolio. "At all our cement plants, our teams work together to operate responsi- bly, striving to perform better than environmental standards as we are building a better future." In addition to the ISO 14001:2015 certification, the Clinch- field plant is one of several Cemex sites to achieve certification from the Wildlife Habitat Council. The plant is also active in the Georgia Black Bear Project. Cemex is currently in the process of achieving ISO 14001:2015 Certification at its eight other active cement plants in the U.S. When a global cement company was experiencing a high-pressure drop across the clinker cooler baghouse as well as ineffective cooling in the clin- ker cooler heat exchanger at one of its North American plants, it reached out to Scheuch for help. The customer was familiar with Scheuch EMC technology, as it utilized the technology at other plants globally, but previous to this project, none in North America. Scheuch's engineering team developed a two-year project implementation plan that fit within the plant's operating schedule and capital budgeting pro- cess. In the first year, a new Scheuch EMC baghouse would be installed, tackling the immediate need to reduce the elevated pressure drop. The long- bag filter technology would be used to provide the maximum filtration area in a smaller footprint; making installation in the existing plant easier. In year two, the heat exchanger would be retrofitted with new Scheuch heat exchanger com- ponents, including bundled, staggered row heat exchanger tubes and Variable Speed Drive (VSD) controlled axial-flow fans for more effective cooling. Ultimately, the customer purchased an EMC baghouse for the clinker cooler exhaust, heat exchanger and auxiliary material handling equipment, including Scheuch screw conveyors. In fact, the customer was so impressed with the Scheuch screw conveyors, they were purchased for applications outside of the baghouse scope of work. Immediately following the installation of the baghouse, the customer realized an improvement in pressure drop of nearly 12 mb. In the following year, after the heat exchanger was installed, water injection volume in the downstream process was significantly reduced, thus resolving processing issues. Another EMC collector and heat exchanger were purchased for the main baghouse at the same facility a few years later. The customer now has a total of seven Scheuch EMC baghouses in two facilities in the southeastern United States. PRODUCTS Scheuch EMC Technology Improves Plant Operations Scheuch long-bag filter technology provides maximum filtration in a small footprint.

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