The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2014
Filed:
Apr. 15, 2009
Noritoshi Tamura, Kumagaya, JP;
Shinichiro Saito, Kumagaya, JP;
Yoshinobu Tatsumi, Kumagaya, JP;
Taiheiyo Cement Corporation, Tokyo, JP;
Abstract
To provide a low price industrial salt by reducing facility and operation costs without electro-deposition and crystallization and through reduction in quantity of chemicals used. 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 endof a cement kilnto a bottom cyclone; recovering dust D from the extracted gas Gand washing recovered dust; and drying a filtrate Lafter 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 coolerand a spray driermay be used for the drying. Drying in a stream provides industrial salt whose particle size is larger or equal to 20 μm and smaller or equal to 500 μm.