GB1321228A - Production of sodium tripolyphosphate - Google Patents

Production of sodium tripolyphosphate

Info

Publication number
GB1321228A
GB1321228A GB3705469A GB1321228DA GB1321228A GB 1321228 A GB1321228 A GB 1321228A GB 3705469 A GB3705469 A GB 3705469A GB 1321228D A GB1321228D A GB 1321228DA GB 1321228 A GB1321228 A GB 1321228A
Authority
GB
United Kingdom
Prior art keywords
sodium tripolyphosphate
hydrated
tripolyphosphate
granules
july
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
GB3705469A
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.)
Solvay Solutions UK Ltd
Original Assignee
Albright and Wilson Ltd
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 Albright and Wilson Ltd filed Critical Albright and Wilson Ltd
Publication of GB1321228A publication Critical patent/GB1321228A/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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

1321228 Sodium tripolyphosphate ALBRIGHT & WILSON Ltd 9 July 1970 [23 July 1969] 37054/69 Heading C1A Substantially anhydrous granular sodium tripolyphosphate is at least partially hydrated, thereby increasing its bulk density, by adding to the granules an aqueous solution of sodium tripolyphosphate. The hydrated sodium tripolyphosphate produced may have a bulk density in the range 0À60 to 0À74 grams./cc. The sodium tripolyphosphate solution, obtained for example by dissolution of fines obtained as waste products in the production of anhydrous granular sodium tripolyphosphate may contain 10 to 27% by weight of sodium tripolyphosphate. Methods of application include spraying on to a layer 1 granule thick or on to a fluidized bed of the granules or mixing. In an example tripolyphosphate (500 g.) is placed in mixers and sprayed with 15 weight per cent sodium tripolyphosphate solutions. In quantities to give 25-100% conversion to hexahydrate. Sieve analyses of initial and 75% hydrated materials are given.
GB3705469A 1969-07-23 1969-07-23 Production of sodium tripolyphosphate Expired GB1321228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3705469 1969-07-23

Publications (1)

Publication Number Publication Date
GB1321228A true GB1321228A (en) 1973-06-27

Family

ID=10393371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3705469A Expired GB1321228A (en) 1969-07-23 1969-07-23 Production of sodium tripolyphosphate

Country Status (3)

Country Link
CA (1) CA934129A (en)
GB (1) GB1321228A (en)
ZA (1) ZA704844B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048341A1 (en) * 1980-09-23 1982-03-31 Hoechst Aktiengesellschaft Process for the preparation of granulate alkali di- or triphosphates
EP0059280A1 (en) * 1981-03-03 1982-09-08 FMC Corporation Preparation of granular sodium tripolyphosphate products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048341A1 (en) * 1980-09-23 1982-03-31 Hoechst Aktiengesellschaft Process for the preparation of granulate alkali di- or triphosphates
EP0059280A1 (en) * 1981-03-03 1982-09-08 FMC Corporation Preparation of granular sodium tripolyphosphate products

Also Published As

Publication number Publication date
ZA704844B (en) 1971-04-28
CA934129A (en) 1973-09-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees