IE40823L - Calcium phosphates - Google Patents
Calcium phosphatesInfo
- Publication number
- IE40823L IE40823L IE750526A IE52675A IE40823L IE 40823 L IE40823 L IE 40823L IE 750526 A IE750526 A IE 750526A IE 52675 A IE52675 A IE 52675A IE 40823 L IE40823 L IE 40823L
- Authority
- IE
- Ireland
- Prior art keywords
- chamber
- reactor
- reaction
- mixture
- gas
- Prior art date
Links
Classifications
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2405—Stationary reactors without moving elements inside provoking a turbulent flow of the reactants, such as in cyclones, or having a high Reynolds-number
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/26—Compounds containing phosphorus
-
- 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
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
- C01B25/322—Preparation by neutralisation of orthophosphoric acid
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00159—Controlling the temperature controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00162—Controlling or regulating processes controlling the pressure
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00182—Controlling or regulating processes controlling the level of reactants in the reactor vessel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Animal Husbandry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fodder In General (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Photoreceptors In Electrophotography (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Materials For Medical Uses (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Fertilizers (AREA)
Abstract
1497716 Calcium phosphates NORSK HYDRO AS 11 March 1975 [19 March 1974] 10093/75 Heading C1A Calcium phosphates such as mono-calcium phosphate, di-calcium phosphate or mixtures thereof are produced by direct reaction between phosphoric acid and calcium carbonate, wherein a preheated aqueous suspension of finely grained (as defined below) calcium carbonate is brought to react with preheated phosphoric acid by introducing the reactants into a short, open ended, tubular reactor (as defined below), whereby evolution of gas and intensive mixing of the reactants in the reaction zone take place, the gas formed expelling or ejecting the foaming mixture from the reaction zone, the reaction being substantially completed while the individual particles in the mixture are freely suspended in air or gas, whereafter the particles are collected. The expression "fine grain" is used to define a substantially homogeneous particulate material which when used in the method of the invention gives a product which is non- sticky and free-flowing. The "short tubular reactor" has a tubular reaction chamber of only sufficient length in relation to its capacity to enable a thorough mixing of the reactants and optimum build up of pressure before ejection thereof, and which is not so long, in relation to the normal throughput of the mixture, to enable the reactions to be completed or substantially completed before ejection of the mixture. The reactor (Fig. 2) may have three sections arranged one after the other, these being a mixing chamber 55, a reaction or pressure chamber 56 and discharger tube 53. The reactant feed lines 51, 52 may be connected tangentially with the mixing chamber. A rod 54 may be arranged at the rear of the reactor for use if the reactor becomes clogged. Apparatus (Fig. 1) for carrying out the process comprises a housing 7, defining a gas-filled free-fall chamber, the short tubular reactor 5, open at one end and having discharge means 53 (Fig. 2) for discharging the reacting mixture into the top of the chamber, and means 8 at the base of the chamber for collecting the resultant reaction product after its discharge from the reactor, the reactor having a pair of feed lines 51, 52 for the supply of calcium carbonate suspension and phosphoric acid respectively and the collecting means including a reaction product discharging device 10 for discharging the product from the chamber. The discharging device may discharge the product to a press 11, granulating device 12, dryer 13 and screen 14 The upper end of the chamber may be fitted with a gas outlet which is connected to a cyclone separator 9a and exhaust fan 9.
[GB1497716A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO740984A NO132685C (en) | 1974-03-19 | 1974-03-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
IE40823L true IE40823L (en) | 1975-09-19 |
IE40823B1 IE40823B1 (en) | 1979-08-29 |
Family
ID=19881520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE526/75A IE40823B1 (en) | 1974-03-19 | 1975-03-11 | Method and apparatus for producing calcium phosphates |
Country Status (22)
Country | Link |
---|---|
JP (1) | JPS50157299A (en) |
BE (1) | BE826881A (en) |
BR (1) | BR7501598A (en) |
CA (1) | CA1060631A (en) |
DD (1) | DD116205A5 (en) |
DE (1) | DE2512099B2 (en) |
DK (1) | DK109575A (en) |
EG (1) | EG11653A (en) |
ES (1) | ES435726A1 (en) |
FI (1) | FI58110C (en) |
FR (1) | FR2264775B1 (en) |
GB (1) | GB1497716A (en) |
HU (1) | HU170874B (en) |
IE (1) | IE40823B1 (en) |
IL (1) | IL46825A (en) |
IN (1) | IN140563B (en) |
IT (1) | IT1032330B (en) |
NL (1) | NL7503212A (en) |
NO (1) | NO132685C (en) |
SE (1) | SE406191C (en) |
TR (1) | TR18505A (en) |
YU (1) | YU61675A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK137180B (en) * | 1975-10-10 | 1978-01-30 | Dansk Ind Syndikat | Process for the preparation of a powder or granular, non-dusting mineral mixture containing calcium phosphates. |
JPS6182841A (en) * | 1984-09-29 | 1986-04-26 | Agency Of Ind Science & Technol | Phosphorus removing agent |
DE3510694A1 (en) * | 1985-03-23 | 1986-09-25 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PRODUCING CALCIUM HYDROGEN PHOSPHATE |
DE3515695C2 (en) * | 1985-05-02 | 1987-03-05 | Benckiser-Knapsack Gmbh, 6802 Ladenburg | Process for the preparation of coarse-grained dicalcium phosphate dihydrate |
JPS6258958A (en) * | 1985-09-10 | 1987-03-14 | Sanraku Inc | Granular feed mixed with mineral |
DE4006734C1 (en) * | 1990-03-03 | 1991-07-25 | Benckiser-Knapsack Gmbh, 6802 Ladenburg, De | |
DE19623082C1 (en) * | 1996-06-10 | 1998-04-16 | Axel Bruckert | High solubility mono:calcium phosphate mono:hydrate, used in animal feed |
AU3451997A (en) * | 1997-07-08 | 1999-02-08 | S A Feed Phosphates (Proprietary) Limited | A method for the production of a mono-calcium phosphate product |
NL1007622C2 (en) * | 1997-11-26 | 1999-05-27 | Axel Bruckert | High solubility mono:calcium phosphate mono:hydrate, used in animal feed |
DE102012215421B4 (en) | 2012-08-30 | 2019-08-29 | Centrum Für Angewandte Nanotechnologie (Can) Gmbh | Process for the preparation of core / shell nanoparticles |
-
1974
- 1974-03-19 NO NO740984A patent/NO132685C/no unknown
-
1975
- 1975-03-11 GB GB10093/75A patent/GB1497716A/en not_active Expired
- 1975-03-11 IE IE526/75A patent/IE40823B1/en unknown
- 1975-03-12 IN IN478/CAL/1975A patent/IN140563B/en unknown
- 1975-03-13 IL IL46825A patent/IL46825A/en unknown
- 1975-03-13 YU YU00616/75A patent/YU61675A/en unknown
- 1975-03-17 EG EG138/75A patent/EG11653A/en active
- 1975-03-17 SE SE7502984A patent/SE406191C/en not_active IP Right Cessation
- 1975-03-17 IT IT48634/75A patent/IT1032330B/en active
- 1975-03-18 CA CA222,335A patent/CA1060631A/en not_active Expired
- 1975-03-18 DK DK109575A patent/DK109575A/da not_active Application Discontinuation
- 1975-03-18 FI FI750784A patent/FI58110C/en not_active IP Right Cessation
- 1975-03-18 BR BR1598/75A patent/BR7501598A/en unknown
- 1975-03-18 HU HU75NO00000190A patent/HU170874B/en unknown
- 1975-03-18 ES ES435726A patent/ES435726A1/en not_active Expired
- 1975-03-18 FR FR7508457A patent/FR2264775B1/fr not_active Expired
- 1975-03-18 NL NL7503212A patent/NL7503212A/en not_active Application Discontinuation
- 1975-03-18 TR TR18505A patent/TR18505A/en unknown
- 1975-03-19 JP JP50032497A patent/JPS50157299A/ja active Pending
- 1975-03-19 BE BE154503A patent/BE826881A/en unknown
- 1975-03-19 DD DD184872A patent/DD116205A5/xx unknown
- 1975-03-19 DE DE2512099A patent/DE2512099B2/en active Granted
Also Published As
Publication number | Publication date |
---|---|
SE7502984L (en) | 1975-09-22 |
CA1060631A (en) | 1979-08-21 |
SE406191B (en) | 1979-01-29 |
GB1497716A (en) | 1978-01-12 |
NO132685B (en) | 1975-09-08 |
AU7910575A (en) | 1976-09-16 |
IE40823B1 (en) | 1979-08-29 |
DK109575A (en) | 1975-09-20 |
FR2264775A1 (en) | 1975-10-17 |
TR18505A (en) | 1977-03-04 |
DE2512099A1 (en) | 1975-09-25 |
IL46825A (en) | 1977-03-31 |
FI750784A (en) | 1975-09-20 |
IT1032330B (en) | 1979-05-30 |
IN140563B (en) | 1976-11-27 |
JPS50157299A (en) | 1975-12-19 |
YU61675A (en) | 1982-05-31 |
DD116205A5 (en) | 1975-11-12 |
NO132685C (en) | 1977-05-24 |
SE406191C (en) | 1986-06-09 |
DE2512099B2 (en) | 1978-07-13 |
FR2264775B1 (en) | 1977-07-22 |
DE2512099C3 (en) | 1979-03-15 |
BR7501598A (en) | 1975-12-16 |
FI58110C (en) | 1980-12-10 |
EG11653A (en) | 1977-12-31 |
NL7503212A (en) | 1975-09-23 |
HU170874B (en) | 1977-09-28 |
IL46825A0 (en) | 1975-05-22 |
FI58110B (en) | 1980-08-29 |
BE826881A (en) | 1975-07-16 |
ES435726A1 (en) | 1977-01-16 |
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