Title of Invention	SELECTIVE SEPARATION OF PHOSPHATE MINERALS FROM OTHER MINERALS, USING AMINOTRIS (METHYLENEPHOSPHONIC ACID), AND DIETHYLENETRIAMINEPENTAKIS (METHYLENEPHOSPHONIC ACID) AS DEPRESSANTS
Abstract	Separation of phosphate minerals from other minerals present problems because of the nature of phosphate containing ores and presence of impurities in such ores. An improved method is disclosed for separation of phosphate minerals from other minerals, particularly from high dolomite containing phosphate ores. The method consists of conditioning the aqueous pulp of the mineral mixture with the depressant at an acidic pH of 5.5 to 7.0. The aqueous pulp is further conditioned with a collector and is subjected to froth flotation. The impurities or unwanted minerals are collected in the froth phase, which are removed. The phosphate bearing minerals are retained in the flotation tailings. The depressant molecules used are Aminotris (methyelephosphonic acid) and Diethylenetriaminepentakis (methylenephosphonic acid).

Title of Invention

SELECTIVE SEPARATION OF PHOSPHATE MINERALS FROM OTHER MINERALS, USING AMINOTRIS (METHYLENEPHOSPHONIC ACID), AND DIETHYLENETRIAMINEPENTAKIS (METHYLENEPHOSPHONIC ACID) AS DEPRESSANTS

Abstract

Separation of phosphate minerals from other minerals present problems because of the nature of phosphate containing ores and presence of impurities in such ores. An improved method is disclosed for separation of phosphate minerals from other minerals, particularly from high dolomite containing phosphate ores. The method consists of conditioning the aqueous pulp of the mineral mixture with the depressant at an acidic pH of 5.5 to 7.0. The aqueous pulp is further conditioned with a collector and is subjected to froth flotation. The impurities or unwanted minerals are collected in the froth phase, which are removed. The phosphate bearing minerals are retained in the flotation tailings. The depressant molecules used are Aminotris (methyelephosphonic acid) and Diethylenetriaminepentakis (methylenephosphonic acid).

Full Text	N/A

Documents:

132-MUM-2005-ABSTRACT(4-9-2008).pdf

132-mum-2005-abstract(8-2-2005).doc

132-mum-2005-abstract(8-2-2005).pdf

132-MUM-2005-CANCELLED PAGES(8-2-2005).pdf

132-MUM-2005-CLAIMS(4-9-2008).pdf

132-mum-2005-claims(granted)-(8-2-2005).doc

132-mum-2005-claims(granted)-(8-2-2005).pdf

132-MUM-2005-CORRESPONDENCE(11-11-2008).pdf

132-mum-2005-correspondence(ipo)-(12-1-2009).pdf

132-mum-2005-correspondence1(11-11-2008).pdf

132-mum-2005-correspondence2(09-02-2005).pdf

132-mum-2005-correspondence3(26-12-2006).pdf

132-MUM-2005-DESCRIPTION(COMPLETE)-(4-9-2008).pdf

132-mum-2005-drawing(8-2-2005).pdf

132-MUM-2005-FORM 1(4-9-2008).pdf

132-mum-2005-form 13(1)(4-9-2008).pdf

132-mum-2005-form 13(2)(4-9-2008).pdf

132-mum-2005-form 13(4-9-2008).pdf

132-mum-2005-form 18(27-12-2006).pdf

132-mum-2005-form 2(8-2-2005).pdf

132-mum-2005-form 2(granted)-(8-2-2005).doc

132-mum-2005-form 2(granted)-(8-2-2005).pdf

132-MUM-2005-FORM 2(TITLE PAGE)-(8-2-2005).pdf

132-mum-2005-form 26(11-3-2008).pdf

132-MUM-2005-FORM 26(4-9-2008).pdf

132-mum-2005-form 26(8-2-2005).pdf

132-mum-2005-form 3(23-10-2008).pdf

132-MUM-2005-FORM 3(4-9-2008).pdf

132-MUM-2005-FORM 5(4-9-2008).pdf

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Patent Number

227499

Indian Patent Application Number

132/MUM/2005

PG Journal Number

10/2009

Publication Date

06-Mar-2009

Grant Date

12-Jan-2009

Date of Filing

08-Feb-2005

Name of Patentee

TATA CONSULTANCY SERVICES LTD.

Applicant Address

TCS HOUSE, RAVELINE STREET, 21DS MARG, FORT,MUMBAI-400 001

Inventors:

#	Inventor's Name	Inventor's Address
1	PRADIP (DR)	Tata Research Development And Design Centre, A Division of Tata Consultancy Services 54, Hadapsar Industrial Estate, Pune 411 013
2	RAI BEENA (Dr)	Tata Research Development And Design Centre, A Division of Tata Consultancy Services 54, Hadapsar Industrial Estate, Pune 411 013 Maharashtra state, India
3	PONNURANGAM SATISH	Tata Research Development And Design Centre, A Division of Tata Consultancy Services 54, Hadapsar Industrial Estate, Pune 411 013 Maharashtra state, India
4	KOKIL SANDHYA AVINASH	Tata Research Development And Design Centre, A Division of Tata Consultancy Services 54, Hadapsar Industrial Estate, Pune 411 013 Maharashtra state, India

PCT International Classification Number

B03D5/30 B03D5/44 B03C1/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA