CN1090053C - 生产颗粒的方法 - Google Patents
生产颗粒的方法 Download PDFInfo
- Publication number
- CN1090053C CN1090053C CN97111619A CN97111619A CN1090053C CN 1090053 C CN1090053 C CN 1090053C CN 97111619 A CN97111619 A CN 97111619A CN 97111619 A CN97111619 A CN 97111619A CN 1090053 C CN1090053 C CN 1090053C
- Authority
- CN
- China
- Prior art keywords
- particle
- solid
- grows
- stream
- urea
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000008187 granular material Substances 0.000 title claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 171
- 239000007787 solid Substances 0.000 claims abstract description 64
- 238000005469 granulation Methods 0.000 claims abstract description 41
- 230000003179 granulation Effects 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract 8
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 70
- 239000004202 carbamide Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 24
- 238000013467 fragmentation Methods 0.000 claims description 9
- 238000006062 fragmentation reaction Methods 0.000 claims description 9
- 239000003337 fertilizer Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 28
- 235000013877 carbamide Nutrition 0.000 description 24
- 239000007789 gas Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000035784 germination Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- NGLMYMJASOJOJY-UHFFFAOYSA-O azanium;calcium;nitrate Chemical compound [NH4+].[Ca].[O-][N+]([O-])=O NGLMYMJASOJOJY-UHFFFAOYSA-O 0.000 description 1
- INIZPXBLAMXMBJ-UHFFFAOYSA-O azanium;magnesium;nitrate Chemical compound [NH4+].[Mg].[O-][N+]([O-])=O INIZPXBLAMXMBJ-UHFFFAOYSA-O 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
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
- 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
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
-
- 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
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
-
- 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
-
- 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
- B01J2/12—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 drums
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/18—Nitrates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/3221—Corrugated sheets
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32213—Plurality of essentially parallel sheets
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32213—Plurality of essentially parallel sheets
- B01J2219/3222—Plurality of essentially parallel sheets with sheets having corrugations which intersect at an angle different from 90 degrees
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32224—Sheets characterised by the orientation of the sheet
- B01J2219/32227—Vertical orientation
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32255—Other details of the sheets
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32255—Other details of the sheets
- B01J2219/32258—Details relating to the extremities of the sheets, such as a change in corrugation geometry or sawtooth edges
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/326—Mathematical modelling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1002862A NL1002862C2 (nl) | 1996-04-15 | 1996-04-15 | Werkwijze voor het bereiden van granules. |
NL1002862 | 1996-04-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1167650A CN1167650A (zh) | 1997-12-17 |
CN1090053C true CN1090053C (zh) | 2002-09-04 |
Family
ID=19762676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN97111619A Expired - Fee Related CN1090053C (zh) | 1996-04-15 | 1997-04-14 | 生产颗粒的方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5779945A (zh) |
CN (1) | CN1090053C (zh) |
CA (1) | CA2202581C (zh) |
NL (1) | NL1002862C2 (zh) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19826570C2 (de) * | 1998-06-15 | 2002-10-31 | Piesteritz Stickstoff | Verfahren zur Herstellung von Harnstoff und Ammonsulfat enthaltenden Düngemittel-Granulaten |
EP1124937B1 (en) * | 1998-10-26 | 2002-12-11 | The Procter & Gamble Company | Processes for making granular detergent composition having improved appearance and solubility |
CN1183240C (zh) * | 1999-06-21 | 2005-01-05 | 宝洁公司 | 在不合格尺寸颗粒循环利用的流化床成粒机中制备粒状洗涤剂的方法 |
AR028064A1 (es) * | 2000-05-03 | 2003-04-23 | Omnia Fertilizer Ltd | Metodo para producir granulos de nitrato de calcio |
HRP20000441A2 (en) * | 2000-06-30 | 2002-06-30 | Basarić Iso | Manufacture of construction materials and products |
NO330729B1 (no) * | 2008-04-28 | 2011-06-27 | Yara Int Asa | Fremgangsmate og granulator for produksjon av granuler |
US20100117267A1 (en) * | 2008-11-13 | 2010-05-13 | Schworm Henry A | Process for pelletizing pet |
EP2192099A1 (en) * | 2008-11-28 | 2010-06-02 | Uhde Fertilizer Technology B.V. | Urea granulation process with an acidic scrubbing system and the subsequent integration of ammonium salt into urea granules |
EP2305371A1 (en) | 2009-09-10 | 2011-04-06 | Stamicarbon B.V. | Process for producing granules |
US8329072B2 (en) | 2010-11-24 | 2012-12-11 | Brimrock International Inc. | Method and system for generating sulfur seeds and granules |
EP2662349A1 (en) | 2012-05-08 | 2013-11-13 | Uhde Fertilizer Technology B.V. | Urea granulation process with scrubbing system |
EP2746244A1 (en) | 2012-12-21 | 2014-06-25 | Uhde Fertilizer Technology B.V. | Method for reducing the visible downwind detached plume opacity |
CN105013393A (zh) * | 2014-04-23 | 2015-11-04 | 无锡市阳光干燥设备有限公司 | 一种内置流化床的三流体喷枪再造粒装置 |
NL2013694B1 (en) | 2014-10-28 | 2016-10-04 | Green Granulation Tech Ltd | Fluidized bed granulation. |
DE102015108344A1 (de) * | 2015-05-27 | 2016-12-01 | Thyssenkrupp Ag | Granulation von Ammoniumsulfat |
EP3315192B1 (en) | 2016-10-27 | 2021-12-15 | YARA International ASA | Fluidized bed granulation |
KR102012038B1 (ko) * | 2017-11-30 | 2019-10-21 | 주식회사 지티씨엔에스 | 반도체와 플렉시블 디스플레이용 폴리이미드 필름 제조후 발생하는 유기용매의 연속 회수방법 |
KR101986367B1 (ko) * | 2017-11-30 | 2019-06-05 | 주식회사 지티씨엔에스 | 반도체와 플렉시블 디스플레이용 폴리이미드 필름 제조후 발생하는 유기용매의 회수방법 및 이에 적합한 회수 장치 |
US20210053884A1 (en) | 2018-05-08 | 2021-02-25 | Thyssenkrupp Fertilizer Technology Gmbh | Internal cooling system for fluid-bed granulation plants |
EP3593898B1 (en) * | 2018-07-13 | 2021-09-01 | thyssenkrupp Fertilizer Technology GmbH | Producing fertilizer granules with a defined size distribution |
CN108863446A (zh) * | 2018-09-29 | 2018-11-23 | 天津华景化工新技术开发有限公司 | 一种大颗粒硝硫铵的生产工艺及其生产系统 |
EP3656463A1 (en) * | 2018-11-22 | 2020-05-27 | Yara International ASA | Method for granulating a melt of a nitrate mineral salt-based composition, system and use thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8100517A (nl) * | 1981-02-04 | 1982-09-01 | Unie Van Kunstmestfab Bv | Werkwijze voor het bereiden van granules, alsmede granules verkregen volgens deze werkwijze. |
US4390483A (en) * | 1980-03-29 | 1983-06-28 | Unie Van Kunstmestfabrieken, B.V. | Method for making urea prills and urea prills obtained by applying this method |
CN86106504A (zh) * | 1985-10-02 | 1987-04-01 | 斯塔米卡本公司 | 颗粒制备技术及应用此技术所获得的颗粒 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3398191A (en) * | 1963-12-09 | 1968-08-20 | Cominco Ltd | Process for the production of granular nitrogenous compounds |
US3705794A (en) * | 1969-08-15 | 1972-12-12 | Scott & Sons Co O M | Foamed fertilizers and combination products |
US3989470A (en) * | 1969-08-15 | 1976-11-02 | O. M. Scott & Sons Company | Apparatus for the production of foamed fertilizers |
US3700461A (en) * | 1970-04-07 | 1972-10-24 | Reynolds Tobacco Co R | Gas suspersion agglomeration |
US4118524A (en) * | 1972-07-31 | 1978-10-03 | Olin Corporation | Granular calcium hypochlorite by spray graining |
US3969546A (en) * | 1974-11-06 | 1976-07-13 | Olin Corporation | Process for preparing granular calcium hypochlorite in a fluidized bed |
GB1581761A (en) * | 1977-06-09 | 1980-12-17 | Azote Sa Cie Neerlandaise | Urea granulation |
IE46841B1 (en) * | 1977-06-09 | 1983-10-05 | Azote Sa Cie Neerlandaise | Improvements in or relating to urea granulation |
JPS5855807B2 (ja) * | 1979-10-08 | 1983-12-12 | 三井東圧化学株式会社 | 造粒方法 |
NL8302999A (nl) * | 1983-08-27 | 1985-03-18 | Unie Van Kunstmestfab Bv | Werkwijze voor het bereiden van granules. |
US4954134A (en) * | 1989-07-31 | 1990-09-04 | Tennessee Valley Authority | Agglomeration of gypsum, limestone, or gypsum-limestone mix |
ZA937253B (en) * | 1992-09-30 | 1994-04-19 | North Broken Hill Ltd | A process for recovering alkali metal hydroxide from organic liquors |
-
1996
- 1996-04-15 NL NL1002862A patent/NL1002862C2/nl not_active IP Right Cessation
-
1997
- 1997-04-14 CA CA002202581A patent/CA2202581C/en not_active Expired - Fee Related
- 1997-04-14 CN CN97111619A patent/CN1090053C/zh not_active Expired - Fee Related
- 1997-04-15 US US08/838,131 patent/US5779945A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4390483A (en) * | 1980-03-29 | 1983-06-28 | Unie Van Kunstmestfabrieken, B.V. | Method for making urea prills and urea prills obtained by applying this method |
NL8100517A (nl) * | 1981-02-04 | 1982-09-01 | Unie Van Kunstmestfab Bv | Werkwijze voor het bereiden van granules, alsmede granules verkregen volgens deze werkwijze. |
CN86106504A (zh) * | 1985-10-02 | 1987-04-01 | 斯塔米卡本公司 | 颗粒制备技术及应用此技术所获得的颗粒 |
Also Published As
Publication number | Publication date |
---|---|
NL1002862C2 (nl) | 1997-10-17 |
CA2202581C (en) | 2005-03-08 |
CA2202581A1 (en) | 1997-10-15 |
US5779945A (en) | 1998-07-14 |
CN1167650A (zh) | 1997-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1090053C (zh) | 生产颗粒的方法 | |
CA1144771A (en) | Manufacture of urea sulfur fertilizer | |
CN102596383B (zh) | 用于生产粒料的方法 | |
US5120345A (en) | Process for producing fertilizer granules | |
EP0141437B1 (en) | Process for the preparation of granules | |
AU8302098A (en) | Method for granulation and granulator | |
US6454979B1 (en) | Wet granulation method for generating granules | |
MXPA00010124A (es) | Metodo de granulacion humeda para generar granulos de azufre. | |
EP2432581B1 (en) | Process for producing granules | |
US6805821B2 (en) | Wet granulation method for generating granules | |
US10512886B2 (en) | Granulating ammonium sulfate | |
EP0217477A1 (en) | Process for preparing granules and granules obtained by applying this process | |
RU2113276C1 (ru) | Способ гранулирования башенным методом минеральных удобрений из их расплавов, содержащих твердые частицы | |
MX2007006076A (es) | Proceso para la granulacion de sulfato de amonio con urea y sulfato de calcio hemihidratado. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: DSMIP PROPERTY CO., LTD. Free format text: FORMER OWNER: DSM N. V. Effective date: 20040618 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20040618 Address after: Holland Heerlen Patentee after: DSMIP Property N. V. Address before: Holland Heerlen Patentee before: DSM N. V. |
|
ASS | Succession or assignment of patent right |
Owner name: STAMICARBON CO., LTD. Free format text: FORMER OWNER: DSM IP PROPERTY CO., LTD. Effective date: 20101117 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: HEERLEN, HOLLAND TO: SITTARD, HOLLAND |
|
TR01 | Transfer of patent right |
Effective date of registration: 20101117 Address after: Holland Sittard Patentee after: DSM IP Assets BV Address before: Holland Heerlen Patentee before: DSM IP Property Limited |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020904 Termination date: 20160414 |
|
CF01 | Termination of patent right due to non-payment of annual fee |