Engineering & Mining Journal

APR 2019

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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WASTE MANAGEMENT APRIL 2019 • E&MJ 37 www.e-mj.com products such as crumb rubber and steel scrap, several companies have or are in the process of implementing other physical or thermal conversion technologies to recover even more useful materials. Titan Tire Reclamation, a subsidiary of Titan Tire International, opened a thermal vacuum pyrolysis recovery plant in Fort McMurray, Alberta, in 2016. The plant was damaged by a fire in 2017, but at the plant's inauguration event, a company ex- ecutive estimated that on a daily basis the operation would be capable of converting 240,000 lb of scrap tires to approximately 13,600 gallons of oil, 52,800 lb of steel and 76,800 lb of carbon black. The system uses 85% of the gas it generates to heat up the vessel containing the scrap tires. Kal Tire has been actively involved in tire recycling, first partnering with another company to shred up to 6,000 tires annu- ally, including mining-class tires up to 63 in. in diameter, at a facility in Alberta near oil sands mining operations. In Chile, the company is working toward completion of a thermal conversion plant that will reduce tires to their original components — carbon black, steel, fuel oil and gas — with the latter also being used to fuel the process. It also provides comprehensive tire repair services. Most notably, its proprietary Ultra Repair technology, which was developed to patch and return deeply damaged but expensive OTR tires to service instead of consigning them to the scrap pile. In some cases, the technology doesn't require size reduction of large tires prior to intake. In Australia, a collaboration be- tween the Tytec Group and Green Distilla- tion Technologies Corp. is working toward commercialization of a thermal process that is claimed to reduce earthmover tires to their basic components in a single step, without need of cutting or shredding. In an interview with an Australian trade publication in early 2018, CEO of GDT Trevor Bayley said the privately held company was finalizing arrangements to build a commercial plant at a site in Queensland that would be capable of handling 19,000 mt of tires annually to produce about 7.3 million gallons of oil derived from the process. Although the actual technical details of the process are skimpy, Bayley explained that during processing, heat is applied in a controlled manner to induce a reaction that reduces the rubber and other non- steel compounds in the tire to their mo- lecular state. Some of these molecules interreact and form new hydrocarbon com- pounds, which are extracted as vapor and condensed into crude oil. Once all the sus- ceptible molecules have recombined, the process ceases and the remaining carbon is extracted together with the steel skele- ton of the tire, which is unchanged. And in Belgium, an enterprise called Big Tyre Recycling Co. (BTRC) report- edly has developed an Ultra High Pres- sure (UHP) water jet system capable of demolishing tires up to 4 m diameter. The patent-pending process, which slic- es and pulverizes the tires using only UHP jets, does not require any form of mechanical shredding or grinding, and produces rubber powder, clean steel and textile fluff for other industrial uses, ac- cording to the company. Don't let downtime cost you. Choose GIW's RAMSL technology to extend your pump's wear life with just the push of a button. NO TIME IS A GOOD TIME FOR DOWNTIME. Learn more at the CIM Convention, Booth 2416 www.giwminerals.com

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