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Smelting Steel Without Fossil Fuels: Solar Power Shatters the 1,000°C Barrier for Industrial Heating

The main component of the thermal trap is a cylinder made of quartz. In the experiments, it reached a temperature of 1050 degrees Celsius and glowed at this heat. Credit: ETH Zurich / Emiliano Casati Swiss researchers have developed a solar energy method using synthetic quartz to achieve temperatures above 1,000°C for industrial processes, potentially

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