The present invention relates to a method of purifying flue gas desulfurization gypsum. The method is characterized by comprising the steps of a) providing an aqueous slurry containing said FGD gypsum, b) passing said aqueous slurry to a magnetic separator, and c) contacting the FGD gypsum to be purified with a solution containing an acid and having pH below 5 in an acid washing step.
A method of purifying flue gas desulfurization gypsum. The method includes the steps of a) providing an aqueous slurry containing said FGD gypsum, b) passing the aqueous slurry to a magnetic separator, and c) contacting the FGD gypsum to be purified with a solution containing an acid and having pH below 5 in an acid washing step.
Technically, flotation can be used in almost all of the mineral separation. It is especially efficient to process metal and non metal minerals like copper, pyrite, iron, gold, quartz, etc. Magnetic separation: Magnetic separation takes advantage of the magnetic difference of different minerals and veins and separate under magnetic effect.
Gypsum processing equipment differs significantly in scale and level of technology. some plants produce one or two tonnes per day using low cost manual technologies, some other plants of a thousand tonnes per day that are highly mechanized and capable of producing different types and grades of gypsum plaster or plaster boards.
gypsum magnetic separation gypsum powder magnetic separator Desulfurization Gypsum Dryer,Desulfurization Gypsum Drying Fote is the first to adopt three cylinder .... Know More Gypsum Beneficiation and processing methods, Gypsum ,
materials and semi fi nished products are called magnetic separation. Kanetec off ers a wide variety of magnetic separators for use with lump materials, bulk materials, clay like materials and liquids. A magnetic separator to select must be suitable for the purpose of use and have a sufficient capacity.
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EP2279151A1 Method of purifying gypsum Google Patents
The present invention relates to a method of purifying flue gas desulfurization gypsum. The method is characterized by comprising the steps of a) providing an aqueous slurry containing said FGD gypsum, b) passing said aqueous slurry to a magnetic separator, and c) contacting the FGD gypsum to be purified with a solution containing an acid and having pH below 5 in an acid washing step.