GB458478A - Improvements in or relating to the manufacture of super-phosphates or mixed fertilizers - Google Patents

Improvements in or relating to the manufacture of super-phosphates or mixed fertilizers

Info

Publication number
GB458478A
GB458478A GB17804/35A GB1780435A GB458478A GB 458478 A GB458478 A GB 458478A GB 17804/35 A GB17804/35 A GB 17804/35A GB 1780435 A GB1780435 A GB 1780435A GB 458478 A GB458478 A GB 458478A
Authority
GB
United Kingdom
Prior art keywords
vat
pict
partition
iii
air
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
GB17804/35A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB458478A publication Critical patent/GB458478A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/10—Apparatus for the manufacture of superphosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

<PICT:0458478/III/1> <PICT:0458478/III/2> <PICT:0458478/III/3> Apparatus for the continuous manufacture of superphosphate or mixed fertilizers comprises a malaxator-evaporator 1 divided transversely of its length into two parts, a first part into which the raw material, e.g. calcium phosphate or cyanamide, is introduced together with acid, e.g. sulphuric acid with, if desired, phosphoric or other acids, which is separated from the second part 4 by a partition 23 dipping into the reacting materials to form a hydraulic seal so that gases liberated in the first part escape without dilution with air, which is circulated in the second part so as to assist evaporation of water, the said second part being provided with two shafts carrying mixing blades. A preliminary mixer 4a forces the reactants through the second part 4 into which air that has served for cooling and drying the finished product enters by nozzle 2 and is exhausted through passage 5. The level in the mixer is regulated by a sluice gate 34. The product flows into a rotary vat 6, mounted on a circular rail 19 toothed at 37 and turning on rollers 18, which vat contains a dividing device. The vat, divider, and malaxator are actuated for example by a motor 33, Fig. 3, through suitable reduction gear. The fixed roof of the vat supports a partition 7 having a semi-cylindrical portion 8 terminating in a tubular outlet 11 through which the finished product falls on to a conveyer 17, and through which the current of air is drawn in. Sealing devices such as 14 are provided between the partition and the wall and floor of the vat. The divider comprises a rotary shaft with arms 9 carrying knives 12 which cut and divide the advancing mass of fertilizer. Scrapers 15 direct the powder to the exit 11. A modified device comprises a vertical caterpillar mounted on rollers 40, 41, Fig. 5, and carrying the knives 12 and scrapers. This may be mounted on a frame so that it can be raised for repair.
GB17804/35A 1934-06-20 1935-06-20 Improvements in or relating to the manufacture of super-phosphates or mixed fertilizers Expired GB458478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR458478X 1934-06-20

Publications (1)

Publication Number Publication Date
GB458478A true GB458478A (en) 1936-12-21

Family

ID=8901502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17804/35A Expired GB458478A (en) 1934-06-20 1935-06-20 Improvements in or relating to the manufacture of super-phosphates or mixed fertilizers

Country Status (1)

Country Link
GB (1) GB458478A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713534A (en) * 1947-05-14 1955-07-19 Saint Gobain Apparatus for fertilizer manufacture
US2730432A (en) * 1950-08-09 1956-01-10 Moritz Jean Apparatus for the manufacture of superphosphate and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713534A (en) * 1947-05-14 1955-07-19 Saint Gobain Apparatus for fertilizer manufacture
US2730432A (en) * 1950-08-09 1956-01-10 Moritz Jean Apparatus for the manufacture of superphosphate and the like

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