GB1064196A - Process for the manufacture of phosphate pellets - Google Patents

Process for the manufacture of phosphate pellets

Info

Publication number
GB1064196A
GB1064196A GB28135/64A GB2813564A GB1064196A GB 1064196 A GB1064196 A GB 1064196A GB 28135/64 A GB28135/64 A GB 28135/64A GB 2813564 A GB2813564 A GB 2813564A GB 1064196 A GB1064196 A GB 1064196A
Authority
GB
United Kingdom
Prior art keywords
phosphate
dust
suspension
sprayed
phosphates
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
GB28135/64A
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.)
Knapsack AG
Original Assignee
Knapsack AG
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
Priority claimed from DE1964K0052883 external-priority patent/DE1567611B2/en
Application filed by Knapsack AG filed Critical Knapsack AG
Publication of GB1064196A publication Critical patent/GB1064196A/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
    • C01B25/003—Phosphorus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/28—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using special binding agents
    • 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
    • C01B25/01—Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Glanulating (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

Phosphate pellets are produced by spraying crude phosphate powder placed on a granulating plate with an aqueous suspension or pulp which contains finely divided solid matter and also dissolved substances acting as a binder and then drying, hardening and baking the green pellets. The solid matter is e.g. electrofilter dust obtained in electrothermal production of phosphorus. The dust contains water-soluble alkali metal phosphates and from it an aqueous suspension containing 25 to 30% solid matter and up to 5% dissolved phosphate is produced and sprayed on to the crude phosphate. A bentonite suspension containing 25 to 30% bentonite and an added quantity of up to 2.5% soluble alkali metal phosphates may be sprayed on to the phosphate, simultaneously with the dust suspension, either mixed with the latter or sprayed on to the centre portion of the plate while the dust suspension is sprayed near to the rim. Similarly an aqueous phosphate suspension, of the type obtained from wet dust removal means used in phosphate dressing, containing about 30% phosphate and up to 2.5% added soluble phosphates may be sprayed simultaneously with the electrofilter dust suspension. In another embodiment, a working suspension containing electrofilter dust and the aforementioned bentonite and phosphate suspensions is used, optionally together with waste products from condensed phosphate manufacture. The water soluble alkali metal phosphates used, except those contained in the electrofilter dust, are sodium phosphates, metaphosphates, pyrophosphates, tri - polyphosphates or higher condensed phosphates.
GB28135/64A 1963-07-08 1964-07-08 Process for the manufacture of phosphate pellets Expired GB1064196A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1963K0050157 DE1300911C2 (en) 1963-07-08 1963-07-08 Process for the production of phosphate pellets
DE1964K0052883 DE1567611B2 (en) 1964-05-06 1964-05-06 METHOD OF MANUFACTURING PHOSPHATE PELLETS

Publications (1)

Publication Number Publication Date
GB1064196A true GB1064196A (en) 1967-04-05

Family

ID=25983751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28135/64A Expired GB1064196A (en) 1963-07-08 1964-07-08 Process for the manufacture of phosphate pellets

Country Status (3)

Country Link
US (2) US3345443A (en)
DE (1) DE1300911C2 (en)
GB (1) GB1064196A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522338A (en) * 1968-05-31 1970-07-28 Fmc Corp Method for hot briquetting calcium phosphate ore

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA958529A (en) * 1971-08-23 1974-12-03 National Research Council Of Canada Co-pelletizing salt mixtures
US4379108A (en) 1980-02-19 1983-04-05 Fmc Corporation Strengthening phosphate shale briquettes
US4867930A (en) * 1981-10-14 1989-09-19 Alfrey Norval K Priller method
US4397826A (en) * 1982-05-10 1983-08-09 Occidental Research Corporation Method of producing phosphorus pentoxide in a kiln with reduced carbon burnout
US4822581A (en) * 1982-11-16 1989-04-18 Stauffer Chemical Company Catenated phosphorus materials and their preparation
US4822583A (en) * 1987-08-17 1989-04-18 Fmc Corporation Phosphate feed material for phosphorus electric furnaces and production of same
US4806326A (en) * 1987-08-17 1989-02-21 Fmc Corporation Phosphate feed material for phosphorus electric furnace
US4783328A (en) * 1987-12-14 1988-11-08 Fmc Corporation Utilization of phosphourus containing by-products

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA617337A (en) * 1961-03-28 International Minerals And Chemical Corporation Process of pelletizing phosphate rock
DE1065823B (en) * 1959-09-24 International Minerals &. Chemi cal Corporation Skokie 111 (V St A) Process for granulating Phos phatgesttm
US2946112A (en) * 1956-07-10 1960-07-26 Koppers Co Inc Process of producing light weight aggregate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522338A (en) * 1968-05-31 1970-07-28 Fmc Corp Method for hot briquetting calcium phosphate ore

Also Published As

Publication number Publication date
DE1300911B (en) 1969-08-14
US3345443A (en) 1967-10-03
USRE26843E (en) 1970-03-31
DE1300911C2 (en) 1974-04-04

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