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:
Jun. 16, 2015
Filed:
Jun. 16, 2010
Jean Marie Wilhelmus Cuypers, Linne, NL;
Jean Marie Wilhelmus Cuypers, Linne, NL;
ROCKWELL INTERNATIONAL A/S, Hedehusene, DK;
Abstract
The present invention provides a method of producing a granular product, the method comprising providing waste stone wool product of which at least 90% is in coherent form having minimum dimension at least 50 mm and which has a content of at least 10% water, by weight of the waste stone wool product; producing a base material from the stone wool by reducing the coherent stone wool to particulate form such that at least 80% by weight of the base material is in the form of particles having size not more than 40 mm, and has water content not more than 50 wt % based on the particulate base material; forming the particulate base material into granules, wherein at least 80% by weight of the granules have size not more than 40 mm, and subjecting the granules to sintering at a temperature in the range 900 to 1050° C. to form a granular product wherein at least 80% by weight of the granular product is in the form of granules having size not more than 40 mm, and during the operation of the method no binder is added. The present invention also relates to a product obtainable by the method described above.