chemical name coal gangue

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Mar 01, 2021 As for pretreating the coal gangue, 600–800 C for 2 h were appropriate condition to activate kaolin for zeolite NaA synthesized , meantime, the carbon can also be burned out completely in 800 C for 2 h, as reported by Don et al. .Furthermore, the fabrication of high-quality zeolite requires proper alkalinity of the Na 2 O–Al 2 O 3 –SiO 2 –H 2 O system for generating pure zeolite ...

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