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:
Apr. 21, 2015
Filed:
May. 24, 2007
Syed Niaz Ahsan, Al-Jubail, SA;
Fazal-ur-rehman Awan, Al-Jubail, SA;
Ali Al-hazemi, Al-Jubail, SA;
Fawzi Al-dulaijan, Al-Jubail, SA;
Syed Niaz Ahsan, Al-Jubail, SA;
Fazal-Ur-Rehman Awan, Al-Jubail, SA;
Ali Al-Hazemi, Al-Jubail, SA;
Fawzi Al-Dulaijan, Al-Jubail, SA;
Saudi Basic Industries Corporation, Riyadh, SA;
Abstract
The present invention relates to a process for the recycling of steel industry iron bearing by-products into a shape suitable for feeding into a direct reduction furnace, comprising the steps of mixing and grinding 50 to 99 wt % of ore and pellet fines and 1 to 50 wt % of slurry, mill scale and/or bag house dust, pelletizing the mixture and indurating the pellets so obtained by heating for 5-60 minutes at a temperature in the range of 1100-1350° C.; and a pellet produced from Iron bearing waste material and having compression strength of at least 2.8 kN and/or a drop number of at least 3.