"A sugar refinery is a refinery which processes raw sugar into white refined sugar or that processes sugar beet to refined sugar.
Many cane sugar mills produce raw sugar, which is sugar that still contains molasses, giving it more colour (and impurities) than the white sugar which is normally consumed in households and used as an ingredient in soft drinks and foods. While cane sugar does not need refining to be palatable, sugar from sugar beet is almost always refined to remove the strong, usually unwanted, taste of beets from it. The refined sugar produced is more than 99 percent pure sucrose." - (en.wikipedia.org 26.01.2020)
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