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A method and apparatus for roast of finely granular sulfur ores, drying and calcination of other feinkoerniger materials, for evaporation of solutions and for saturate of such with gases or mute or absorbing the latter by means of an agent feinkoerniger or flue
A method and apparatus for roast of finely granular sulfur ores, drying and calcination of other feinkoerniger materials, for evaporation of solutions and for saturate of such with gases or mute or absorbing the latter by means of an agent feinkoerniger or flue