CN104086235B - A kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium - Google Patents
A kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium Download PDFInfo
- Publication number
- CN104086235B CN104086235B CN201410348161.XA CN201410348161A CN104086235B CN 104086235 B CN104086235 B CN 104086235B CN 201410348161 A CN201410348161 A CN 201410348161A CN 104086235 B CN104086235 B CN 104086235B
- Authority
- CN
- China
- Prior art keywords
- magnesium
- ammonium nitrate
- steel band
- tablets press
- solution
- 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.)
- Active
Links
Landscapes
- Fertilizers (AREA)
Abstract
The present invention relates to the production technique of chemical fertilizer field ammonium nitrate magnesium, be specially a kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium.Solve and easily lump for the magnesium nitrate of fertilizer at present and product purity technical problem on the low side.Utilize steel band tablets press to produce a method for full water-soluble ammonium nitrate magnesium, comprise the following steps: magnesium oxide and dust technology are added reactor and carries out neutralization reaction by (a), regulate reaction solution pH to 6.5 ~ 7.5 with magnesium oxide afterwards; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (); D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, carry out double evaporation-cooling and concentrate after stirring; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates round sheet ammonium nitrate magnesium finished product.The present invention is adjusted by production equipment and process, achieve product can not by effect of natural conditions and water-soluble and content obviously improve.
Description
Technical field
The present invention relates to the production technique of chemical fertilizer field ammonium nitrate magnesium, be specially a kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium.
Background technology
The magnesium nitrate hexahydrate crystal (or particle) for fertilizer trade that prior art is produced, in order to prevent soil acidification, require that product pH scope is 6 ~ 7, but under this pH condition, macroscopic white flock water-insoluble is there will be when product is water-soluble, spraying in process, very easily generation spray is stifled, and this just greatly limit this product and is spraying the application in establishing; Simultaneously because crystal (or particle) surface has a large amount of dissociating water molecules to exist, this just causes product in packed and transported, easily occur the plate that lumps, and is unfavorable for long-distance transport and lengthy warehousing; And be subject to the impact of water-insoluble and a large amount of dissociating water molecule of product surface, directly results in product purity on the low side.Therefore a kind of fertilizer product that can overcome above-mentioned technical problem is needed.
Summary of the invention
The present invention solves easily to lump for the magnesium nitrate of fertilizer at present and product purity technical problem on the low side, provides a kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium.
The present invention adopts following technical scheme to realize: a kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 40 ± 2%, temperature controls at 70 ~ 80 DEG C of stirring reaction 1.5 ~ 2h, regulates reaction solution pH to 6.5 ~ 7.5 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.080 ~ 1.400g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution accounts for 1 ~ 5.5% of the magnesium nitrate solution quality after concentrating, concentration of ammonium nitrate solution is 50 ± 2%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1.150 ~ 1.540g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product.
1, the present invention is by adjusting original magnesium nitrate products production equipment and process, thoroughly solves product poorly water-soluble, purity is on the low side, the problem of easy caking.
2, emphasis of the present invention with the addition of a certain proportion of solidifying agent (ammonium nitrate) in process of production.The major cause of product poorly water-soluble has the alkaline oxygenated magnesium do not reacted to exist, partially cured dose is decomposed at a certain temperature, discharge oxynitride, the oxynitride aqueous solution is equivalent to salpeter solution, can generate magnesium nitrate with unreacted alkaline oxygenated reactive magnesium, the shortcoming so both solving product poorly water-soluble turn improves product purity; And another part solidifying agent and magnesium nitrate generation physical adsorption, the mobility of material is strengthened, thus makes the intensity enhancing on material surface, greatly reduce the generation of caking phenomenon, so just solve the caking phenomenon that product occurs in long-distance transport and lengthy warehousing.
3, the magnesium nitrate that prior art is produced is white needle-like crystals (or particulate state), and the cotton-shaped water-insoluble of water-soluble adularescent, easily caking, content is on the low side 98 ~ 98.5%; The ammonium nitrate magnesium that the present invention produces is semisphere sheet (1 ~ 50mm, be particulate state in the market), product is water-soluble is limpid clear solution, and long-time storage and long-distance transport no longer occur caking phenomenon, and through secondary concentration, product content can reach 99 ~ 99.5%.
Upstream process heat can be melted on the steel band of state material by the uniform thereunder at the uniform velocity movement of tablets press distributor by described steel band tablets press; continuous spray, refrigerating unit is provided with below steel band; force the material on steel band to be able to quick cooling, solidification at moving process, thus reach the object of granulating and forming.
The present invention is adjusted by production equipment and process, achieves product and can not be subject to effect of natural conditions (as: under Various Seasonal and temperature, product does not lump substantially), and water-soluble and content obviously improves; Simultaneously because product is simultaneously containing magnesium and ammonium, nutrient is more more comprehensive than ammonium nitrate, and plant can directly absorb, and agriculturally result of use is good.
Accompanying drawing explanation
Fig. 1 present invention process schema.
The structural representation of Fig. 2 equipment therefor of the present invention.
Fig. 3 steel band granulator structure schematic diagram.
1-dilute acid bath, 2-magnesium oxide groove, 3-reactor, 4-plate and frame(type)filter press; 5-clear liquid groove, 6-single vaporization device, 7-mixes liquid bath; 8-ammonium nitrate liquid bath, 9-second evaporator, 9a-second evaporator steam inlet; 9b-second evaporator vapour outlet, 10-steam boiler, 11-cooling reactor; 12-steel band tablets press, 13-feeding device, 14-chilled water tank; 14a-entrance of cooling water, 14b-cooling water outlet, 15-crusher.
Embodiment
Embodiment 1 one kinds utilizes steel band tablets press to produce the method for full water-soluble ammonium nitrate magnesium, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 40%, temperature controls at 72 DEG C of stirring reaction 1.5h, regulates reaction solution pH to 6.5 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.300g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution account for concentrated after magnesium nitrate solution quality 4.5%, concentration of ammonium nitrate solution is 48%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1.540g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product.
In described step (d) during concentrate, the Heating temperature of employing is 150 DEG C.
When entering steel band, temperature controls at 75 DEG C, and temperature is cooled to 30 DEG C and is solidified as semisphere sheet.
Embodiment 2 one kinds utilizes steel band tablets press to produce the method for full water-soluble ammonium nitrate magnesium, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 41%, temperature controls at 76 DEG C of stirring reaction 1.7h, regulates reaction solution pH to 7.0 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.080g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution account for concentrated after magnesium nitrate solution quality 5.5%, concentration of ammonium nitrate solution is 49%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1450g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product.
In described step (d) during concentrate, the Heating temperature of employing is 145 DEG C.
When entering steel band, temperature controls at 65 DEG C, and temperature is cooled to 26 DEG C and is solidified as semisphere sheet.
Embodiment 3 one kinds utilizes steel band tablets press to produce the method for full water-soluble ammonium nitrate magnesium, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 39%, temperature controls at 78 DEG C of stirring reaction 1.6h, regulates reaction solution pH to 7.5 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.200g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution account for concentrated after magnesium nitrate solution quality 3.5%, concentration of ammonium nitrate solution is 50%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1.300g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product.
In described step (d) during concentrate, the Heating temperature of employing is 140 DEG C.
When entering steel band, temperature controls at 85 DEG C, and temperature is cooled to 28 DEG C and is solidified as semisphere sheet.
Embodiment 4 one kinds utilizes steel band tablets press to produce the method for full water-soluble ammonium nitrate magnesium, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 38%, temperature controls at 70 DEG C of stirring reaction 1.8h, regulates reaction solution pH to 6.5 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.400g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution account for concentrated after magnesium nitrate solution quality 2.5%, concentration of ammonium nitrate solution is 52%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1.150g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product.
In described step (d) during concentrate, the Heating temperature of employing is 155 DEG C.
When entering steel band, temperature controls at 95 DEG C, and temperature is cooled to 24 DEG C and is solidified as semisphere sheet.
Embodiment 5 one kinds utilizes steel band tablets press to produce the method for full water-soluble ammonium nitrate magnesium, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 42%, temperature controls at 80 DEG C of stirring reaction 2h, regulates reaction solution pH to 7.5 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.350g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution account for concentrated after magnesium nitrate solution quality 1%, concentration of ammonium nitrate solution is 51%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1.250g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product.
In described step (d) during concentrate, the Heating temperature of employing is 160 DEG C.
When entering steel band, temperature controls at 100 DEG C, and temperature is cooled to 20 DEG C and is solidified as semisphere sheet.
The production equipment that the present invention adopts as shown in Figure 2, dust technology is filled in dilute acid bath 1 in Fig. 2, magnesium oxide is filled in magnesium oxide groove 2, the two is connected with reactor 3 by pipeline, the bottom discharge mouth of reactor 3 is connected with plate and frame(type)filter press 4 by pipeline, for filtering magnesium nitrate neutralizer, plate and frame(type)filter press 4 discharge port is connected with clear liquid groove 5, clear liquid groove 5 discharge port is connected with single vaporization device 6, single vaporization device 6 is also connected with steam boiler 10, the bottom discharge mouth of single vaporization device 6 is connected with mixed liquid bath 7 by pipeline, mixed another opening for feed of liquid bath 7 is connected with ammonium nitrate liquid bath 8, the bottom discharge mouth of mixed liquid bath 7 is connected with second evaporator 9, second evaporator 9 is also connected with steam boiler 10, second evaporator 9 discharge port is connected with two cooling reactors 11 simultaneously simultaneously, two cooling reactors 11 are connected with steel band tablets press 12 jointly, two cooling reactors 11 are connected with the entrance of the feeding device 13 of steel band tablets press, steam boiler 10 to once, second evaporator provides steam.The pipeline connecting each container is equipped with pump for pumping solution.In Fig. 2, arrow direction is the flow direction of solution or material.
Second evaporator is offered steam inlet and outlet.Steel band tablets press 12 is offered entrance of cooling water and outlet, wherein steam inlet, vapour outlet adopts upper entering and lower leaving, and entrance of cooling water 14a, cooling water outlet 14b adopt bottom in and top out.Single steel band granulation flaker that steel band tablets press adopts upper Nereid's great waves steel band Science and Technology Ltd. to produce, device numbering: JT3000-1.5-17.5.
Claims (2)
1. the method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium, it is characterized in that, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor and carry out neutralization reaction, salpeter solution concentration is 40 ± 2%, temperature controls at 70 ~ 80 DEG C of stirring reaction 1.5 ~ 2h, regulates reaction solution pH to 6.5 ~ 7.5 afterwards with magnesium oxide; B magnesium nitrate neutralizer that () obtains enters plate and frame(type)filter press and filters, and obtains clear filtrate; C filtrate is pumped into single vaporization device and carries out evaporation concentration by (), being evaporated to proportion is 1.080 ~ 1.400g/cm
3; D () adds ammonium nitrate solution to the magnesium nitrate solution after concentrated, described ammonium nitrate solution accounts for 1 ~ 5.5% of the magnesium nitrate solution quality after concentrating, concentration of ammonium nitrate solution is 50 ± 2%, and carry out double evaporation-cooling after stirring and concentrate, concentrate to proportion is 1.150 ~ 1.540g/cm
3; E () concentrated solution enters steel band tablets press, the granulation through steel band tablets press generates semisphere sheet ammonium nitrate magnesium finished product; When concentrated solution enters steel band, temperature controls at 65 ~ 100 DEG C, and temperature is cooled to 20 ~ 30 DEG C and is solidified as semisphere sheet finished product.
2. a kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium as claimed in claim 1, it is characterized in that, in described step (d) during concentrate, the Heating temperature of employing is 140 ~ 160 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348161.XA CN104086235B (en) | 2014-07-22 | 2014-07-22 | A kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348161.XA CN104086235B (en) | 2014-07-22 | 2014-07-22 | A kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104086235A CN104086235A (en) | 2014-10-08 |
| CN104086235B true CN104086235B (en) | 2016-02-24 |
Family
ID=51634028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410348161.XA Active CN104086235B (en) | 2014-07-22 | 2014-07-22 | A kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104086235B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725097B (en) * | 2015-03-20 | 2017-09-26 | 路永宽 | The method of steel band granulation production full water-soluble potassium ammonium nitrate magnesium |
| CN104725098B (en) * | 2015-03-20 | 2017-08-29 | 路永宽 | The method of steel band granulation production full water-soluble ammonium nitrate calcium and magnesium |
| CN104744100B (en) * | 2015-03-20 | 2017-08-11 | 路永宽 | The method that disc granulation produces full water-soluble ammonium nitrate calcium and magnesium |
| CN106517266B (en) * | 2016-12-08 | 2018-11-02 | 大连百傲化学股份有限公司 | A method of producing magnesium nitrate hexahydrate |
| CN110668847B (en) * | 2019-11-04 | 2022-05-17 | 山西华鑫肥业股份有限公司 | Production method of large-particle magnesium nitrate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173756A (en) * | 1960-11-16 | 1965-03-16 | Monsanto Co | Double nitrate salts and methods for their preparation |
| EP0075354A1 (en) * | 1981-09-17 | 1983-03-30 | Unie Van Kunstmestfabrieken B.V. | Process for the preparation of magnesium nitrate hexahydrate |
| EP0107870A1 (en) * | 1982-10-01 | 1984-05-09 | Stamicarbon B.V. | Production of magnesium nitrate solutions |
| EP0229421A2 (en) * | 1985-12-13 | 1987-07-22 | Hydro Agri Sluiskil B.V. | A process for the production of a magnesium nitrate containing solution suitable for use in making thermally stable ammonium nitrate containing fertilizers |
| CN101348401A (en) * | 2008-09-03 | 2009-01-21 | 山西省交城红星化工有限公司 | Preparation of calcium ammonium nitrate coated fertilizer |
| CN102951933A (en) * | 2011-08-19 | 2013-03-06 | 交城县三喜化工有限公司 | Production method of granulated calcium ammonium nitrate |
| CN102992920A (en) * | 2013-01-06 | 2013-03-27 | 河北萌帮水溶肥料有限公司 | Granulating forming process of secondary element water soluble fertilizer |
-
2014
- 2014-07-22 CN CN201410348161.XA patent/CN104086235B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173756A (en) * | 1960-11-16 | 1965-03-16 | Monsanto Co | Double nitrate salts and methods for their preparation |
| EP0075354A1 (en) * | 1981-09-17 | 1983-03-30 | Unie Van Kunstmestfabrieken B.V. | Process for the preparation of magnesium nitrate hexahydrate |
| EP0107870A1 (en) * | 1982-10-01 | 1984-05-09 | Stamicarbon B.V. | Production of magnesium nitrate solutions |
| EP0229421A2 (en) * | 1985-12-13 | 1987-07-22 | Hydro Agri Sluiskil B.V. | A process for the production of a magnesium nitrate containing solution suitable for use in making thermally stable ammonium nitrate containing fertilizers |
| CN101348401A (en) * | 2008-09-03 | 2009-01-21 | 山西省交城红星化工有限公司 | Preparation of calcium ammonium nitrate coated fertilizer |
| CN102951933A (en) * | 2011-08-19 | 2013-03-06 | 交城县三喜化工有限公司 | Production method of granulated calcium ammonium nitrate |
| CN102992920A (en) * | 2013-01-06 | 2013-03-27 | 河北萌帮水溶肥料有限公司 | Granulating forming process of secondary element water soluble fertilizer |
Non-Patent Citations (2)
| Title |
|---|
| 硝酸铵钙的生产技术;唐文骞 等;《化肥工业》;20101231;第37卷(第6期);15-17 * |
| 粒状硝酸铵钙造粒工艺的探讨;谷守玉 等;《磷肥与复肥》;20050531;第20卷(第3期);16-17 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104086235A (en) | 2014-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104086235B (en) | A kind of method utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium | |
| CN104098115B (en) | A kind of method utilizing steel band tablets press to produce full water-soluble sheet magnesium nitrate | |
| CN103804092B (en) | Sugarcane special-purpose fertilizer material and preparation method thereof | |
| CN105294469B (en) | A kind of preparation method of sodium iron ethylene diamine tetra acetate | |
| CN104744100B (en) | The method that disc granulation produces full water-soluble ammonium nitrate calcium and magnesium | |
| CN203998985U (en) | A kind of device of producing full water-soluble sheet magnesium nitrate | |
| CN103833444A (en) | Magnesium nitrate-calcium nitrate complex salt type compound fertilizer and preparation method thereof | |
| CN110817912A (en) | Process for directly treating and utilizing hydrogen chloride gas | |
| CN103130205A (en) | Method for producing industrial monoammonium phosphate and coproducing water-soluble ammonium sulfate phosphate | |
| CN110668875B (en) | Production method of high-sulfur full-water-soluble nitro-sulfur-based nitrogen fertilizer particles | |
| CN102701824A (en) | Production method for macro-element water-soluble fertilizer | |
| CN105948850A (en) | Polypeptide chelated potassium zinc urea fertilizer and preparation method thereof | |
| CN105669311A (en) | Production method of clear liquid type macroelement water-soluble fertilizer | |
| CN105399455B (en) | A kind of system and method using chemical industry tail gas production compound fertilizer | |
| CN104725098B (en) | The method of steel band granulation production full water-soluble ammonium nitrate calcium and magnesium | |
| CN104692980A (en) | Humus acid nitrogen fertilizer granulating device and method thereof | |
| CN107935666A (en) | A kind of double ammoniation-granulation techniques | |
| CN102417385A (en) | Method for producing amino acid inorganic composite fertilizer by ammonia-acid process | |
| CN203999400U (en) | A kind of device of producing full water-soluble ammonium nitrate magnesium | |
| CN106831055A (en) | A kind of method that slurry-spraying pelletizing produces high nitrogen sulfur base water-flush compound fertilizer | |
| CN110483710B (en) | Production line of poly alpha-methyl styrene resorcinol formaldehyde resin | |
| CN103864470B (en) | Saltpetre magnesium double salt type composite fertilizer and preparation method thereof | |
| CN204529677U (en) | A kind of device producing full water-soluble sheet calcium ammonium nitrate magnesium | |
| CN109019645B (en) | Production system and production method of large-particle magnesium nitrate | |
| CN102584408B (en) | Method for producing nitro-sulfur-based composite fertilizer by full-liquid phase high tower granulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170208 Address after: 030500 Shanxi city of Lvliang province Jiaocheng Yiwang Village Patentee after: Shanxi Jiaocheng Hongxing Chemicals Co., Ltd. Address before: 030006 Shanxi Province, Taiyuan City Pro Yin North No. 368 hydraulic building 14 layer Patentee before: Lu Yongkuan |