GB1060375A - Process for the production of a sodium tripolyphosphate - Google Patents

Process for the production of a sodium tripolyphosphate

Info

Publication number
GB1060375A
GB1060375A GB22217/64A GB2221764A GB1060375A GB 1060375 A GB1060375 A GB 1060375A GB 22217/64 A GB22217/64 A GB 22217/64A GB 2221764 A GB2221764 A GB 2221764A GB 1060375 A GB1060375 A GB 1060375A
Authority
GB
United Kingdom
Prior art keywords
sodium tripolyphosphate
mesh
particles
stage
size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB22217/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FMC Corp
Original Assignee
FMC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FMC Corp filed Critical FMC Corp
Publication of GB1060375A publication Critical patent/GB1060375A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/41—Polyphosphates of alkali metals
    • C01B25/418—After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Glanulating (AREA)
  • Detergent Compositions (AREA)

Abstract

Sodium tripolyphosphate of bulk density 0.4 to 1.2 g./c.c. and of relatively long hydration time is compacted at below 350 DEG C. to form non-friable particles and the particles are ground to yield sodium tripolyphosphate of bulk density between 1.0 and 1.15 g./c.c. having a hydration time of less than 3 minutes. The starting material may be that obtained by spray drying or rotary kiln drying an aqueous solution and preferably has a U.S.A. mesh size from -14 to +270. The compacted particles may be briquettes of size about 1 1/4 X 3/4 X 1/2 inch. Fines removed after the compacting stage and after the grinding stage are recycled to the compacting stage, and a fraction coarser than +20 mesh from the grinding stage is recycled to the grinder. The product preferably has a particle size of -20 to +100 mesh.
GB22217/64A 1963-06-20 1964-05-29 Process for the production of a sodium tripolyphosphate Expired GB1060375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US289315A US3338671A (en) 1963-06-20 1963-06-20 Sodium tripolyphosphate granular product

Publications (1)

Publication Number Publication Date
GB1060375A true GB1060375A (en) 1967-03-01

Family

ID=23110997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22217/64A Expired GB1060375A (en) 1963-06-20 1964-05-29 Process for the production of a sodium tripolyphosphate

Country Status (2)

Country Link
US (1) US3338671A (en)
GB (1) GB1060375A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195307A2 (en) * 1985-03-18 1986-09-24 Hoechst Aktiengesellschaft Process for the preparation of a granular product containing sodium triphosphate

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446580A (en) * 1965-06-07 1969-05-27 Fmc Corp Non-caking sodium tripolyphosphate
US3397947A (en) * 1965-10-01 1968-08-20 Monsanto Co Stabilized polyphosphate products
US3639284A (en) * 1969-08-14 1972-02-01 Olin Corp Bleaching composition
US3852212A (en) * 1972-11-29 1974-12-03 Fmc Corp Method of producing hydrated sodium tripolyphosphate composition
US4255274A (en) * 1979-01-02 1981-03-10 Fmc Corporation Preparation of granular sodium tripolyphosphate products
US4251498A (en) * 1979-01-02 1981-02-17 Fmc Corporation Preparation of granular sodium tripolyphosphate products from screen undersize sodium tripolyphosphate particles
JPH02274799A (en) * 1989-04-17 1990-11-08 Nippon T-Paul:Kk Solid detergent composition and its manufacture
US5004589A (en) * 1989-11-29 1991-04-02 Monsanto Company Process for preparing sodium tripolyphosphate
US5215731A (en) * 1992-04-08 1993-06-01 Monsanto Company Process for preparing medium density granular sodium tripolyphosphate
US5660808A (en) * 1995-06-14 1997-08-26 Monsanto Company Salt compatible sodium tripolyphosphate
CN115626621B (en) * 2022-10-20 2024-01-09 贵州开阳青利天盟化工有限公司 Production method of instant sodium tripolyphosphate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444837A (en) * 1948-07-06 Detergent briquette
US2622068A (en) * 1948-06-04 1952-12-16 Procter & Gamble Process of making heat dried detergent compositions containing form ii sodium triphosphate
US2712529A (en) * 1948-10-21 1955-07-05 Procter & Gamble Detergent composition
US2904513A (en) * 1954-04-16 1959-09-15 Monsanto Chemicals Inorganic phosphate compositions, and methods for the preparation and utilization thereof
US3094382A (en) * 1957-12-04 1963-06-18 Saint Gobain Preparation of sodium tripolyphosphate
US3174934A (en) * 1961-04-24 1965-03-23 Monsanto Co Hydration of sodium tripolyphosphate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195307A2 (en) * 1985-03-18 1986-09-24 Hoechst Aktiengesellschaft Process for the preparation of a granular product containing sodium triphosphate
EP0195307A3 (en) * 1985-03-18 1989-07-12 Hoechst Aktiengesellschaft Process for the preparation of a granular product containing sodium triphosphate

Also Published As

Publication number Publication date
US3338671A (en) 1967-08-29

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