I can’t access the full article because it’s protected. Based on the title and typical Chemical Engineering coverage, it likely explains how pilot and demo rotary kiln testing is used to validate thermal-chemistry processes at scale—de‑risking scale-up by proving reaction kinetics, residence time and heat-transfer needs, product quality, and emissions—while outlining test design, instrumentation and data capture, and how results inform full-scale kiln specification and operation.

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