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PATENT APPLICATION PUBLICATION
INDIA
Date of filing of Application: 28/09/2001
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Application No.: 1009/DEL/2001
Publication Date:09/06/2006
(54) Title of the Invention: “ A process for preparation of ferronickel from spent nickel catalyst”
(51) International Classification : C 22 B 23/02
(31) Priority Document No.
NA
:
(32) Priority Date : NA
(33) Name of priority country NA
(86) International application No. : NA
Filing Date : NA
(87) International Publication No. : NA
(61) Patent of Addition to
Application No.
: N.A.
(62) Divisional to Application No. : NIL
Filed On : N.A.
Total No. of pages : 09
(71) Name of Applicant :
Council of Scientific &Industrial
Research.
Address of the Applicant: Rafi Marg, new
Delhi – 110001.
(72) Name of the Inventor:
Kamala Kanta Sahu,
Zahid Husain Khan,
Shailendra Kumar,
Banshi Dhar Pandey
Premchand.
(57) Abstract: The present invention relates to a process for preparation ferronickel from spent nickel catalyst.
This invention particularly relates to a process for recovery of nickel as ferronickel from spent nickel catalyst by
electrothermic smelting route.
The present invention provides a process preparation of ferronickel from spent nickel catalyst which comprises.
(a) mixing carbon powder and lime with ground spent nickel catalyst.
(b) Adding water in the above mixture and making pallets of 5-20 mm size.
(c) Allowing the said pallets to dry in the range of 110-120 0 C for a period of 12-24 h to remove moisture
completely,
(d) Melting the iron scrap or ferronickel by known process to make a pool for proper conduction,
(e) Charging the dried pallets as obtained in step(iii) by adding this slowly into the above said iron scrap or
ferronickel melt for complete smelting to obtain the iron to nickel ratio in the range of 8:2 to 1:9 and
(f) Cooling and separating the metal and slag by the known process.
The Patent Office Journal 09/06/2006 11104
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