An apparatus for producing a low-soda alumina, comprising a calciner forcalcining aluminum hydroxide in the presence of a soda-removal agent, by which alumina dust is produced;
Cement clinker calcining plant with large granularity fluidized bed has been developed for further upgrading clinker quality, reducing heat consumption in calcining and minimizing pollutions.
为进一步提高熟料质量，降低煅烧热耗，减小污染，开发了大颗粒流化床水泥熟料煅烧装置。
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The low-temperature superheated steam is a low-energy-level heat source of electric power plant and it is an efficient clean energy for drying and calcining desulfurization gypsum.