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APPARATUS AND PROCESS FOR PRODUCING INDUSTRIAL SALT
[Subject] To provide a low price industrial salt by reducing facility and operation costs without electrodeposition and crystallization and through reduction in quantity of chemicals used. [Means for Solution] An industrial salt S obtained by the steps of: extracting a part of combustion gas from a kiln exhaust gas passage running from an inlet end 12b of a cement kiln 12 to a bottom cyclone 13; recovering dust D from the extracted gas G2 and washing recovered dust; and drying a filtrate L1 after the washing in a gas stream. The industrial salt can be obtained by removing a calcium component from the filtrate and drying the filtrate from which the calcium component is removed in a gas stream. Further, from the filtrate can be removed sulfate radical, and drying the filtrate from which the calcium component is removed in a gas stream to obtain the industrial salt. For the drying can be used an exhaust gas discharged from a clinker cooler 12a and a spray drier 43 may be used for the drying. Drying in a stream provides industrial salt whose particle size is larger or equal to 20µm and smaller or equal to 500µm.
APPARATUS AND PROCESS FOR PRODUCING INDUSTRIAL SALT
[Subject] To provide a low price industrial salt by reducing facility and operation costs without electrodeposition and crystallization and through reduction in quantity of chemicals used. [Means for Solution] An industrial salt S obtained by the steps of: extracting a part of combustion gas from a kiln exhaust gas passage running from an inlet end 12b of a cement kiln 12 to a bottom cyclone 13; recovering dust D from the extracted gas G2 and washing recovered dust; and drying a filtrate L1 after the washing in a gas stream. The industrial salt can be obtained by removing a calcium component from the filtrate and drying the filtrate from which the calcium component is removed in a gas stream. Further, from the filtrate can be removed sulfate radical, and drying the filtrate from which the calcium component is removed in a gas stream to obtain the industrial salt. For the drying can be used an exhaust gas discharged from a clinker cooler 12a and a spray drier 43 may be used for the drying. Drying in a stream provides industrial salt whose particle size is larger or equal to 20µm and smaller or equal to 500µm.
APPARATUS AND PROCESS FOR PRODUCING INDUSTRIAL SALT
VORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG DES INDUSTRIESALZES
APPAREIL ET PROCÉDÉ POUR LA FABRICATION DE SEL INDUSTRIEL
TAMURA NORITOSHI (author) / SAITO SHINICHIRO (author) / TATSUMI YOSHINOBU (author)
2019-10-16
Patent
Electronic Resource
English
INDUSTRIAL SALT AND APPARATUS AND PROCESS FOR PRODUCING INDUSTRIAL SALT
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