CN104086235A - Method for producing full-water-soluble magnesium ammonium nitrate by using steel belt granulator - Google Patents
Method for producing full-water-soluble magnesium ammonium nitrate by using steel belt granulator Download PDFInfo
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- CN104086235A CN104086235A CN201410348161.XA CN201410348161A CN104086235A CN 104086235 A CN104086235 A CN 104086235A CN 201410348161 A CN201410348161 A CN 201410348161A CN 104086235 A CN104086235 A CN 104086235A
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- Prior art keywords
- magnesium
- ammonium nitrate
- steel band
- solution
- concentrated
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- INIZPXBLAMXMBJ-UHFFFAOYSA-O azanium;magnesium;nitrate Chemical compound [NH4+].[Mg].[O-][N+]([O-])=O INIZPXBLAMXMBJ-UHFFFAOYSA-O 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000000047 product Substances 0.000 claims abstract description 29
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 22
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 19
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000000706 filtrate Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 15
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims abstract description 9
- 238000005469 granulation Methods 0.000 claims abstract description 9
- 230000003179 granulation Effects 0.000 claims abstract description 9
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 9
- 239000012141 concentrate Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 12
- 238000009834 vaporization Methods 0.000 claims description 11
- 230000008016 vaporization Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000003337 fertilizer Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000012295 chemical reaction liquid Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 52
- 239000007788 liquid Substances 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- MFUVDXOKPBAHMC-UHFFFAOYSA-N magnesium;dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MFUVDXOKPBAHMC-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Fertilizers (AREA)
Abstract
The invention relates to a production process of magnesium ammonium nitrate in the field of chemical fertilizers, and in particular relates to a method for producing full-water-soluble magnesium ammonium nitrate by using a steel belt granulator. By adopting the method, the technical problems that magnesium nitrate used for a fertilizer is easy to agglomerate and is relatively low in product purity at present can be solved. The method for producing full-water-soluble magnesium ammonium nitrate by using the steel belt granulator comprises the following steps: (a), adding magnesium oxide and dilute nitric acid into a reaction kettle to perform neutralization reaction, and then regulating the pH value of reaction liquid to be 6.5-7.5 by using magnesium oxide; (b) feeding an obtained magnesium nitrate neutralization solution to a plate-frame filter for filtration; (c) pumping filtrate into a primary evaporator to be subjected to evaporation concentration; (d) adding an ammonium nitrate solution into a concentrated magnesium nitrate solution, uniformly stirring, and then performing secondary evaporation concentration; and (e) enabling a concentrated solution to enter the steel belt granulator, and performing granulation by using the steel belt granulator to generate a circular flaky magnesium ammonium nitrate finished product. By regulating production equipment and processes, the method disclosed by the invention can achieve that the product cannot be influenced by natural conditions, and the water solubility and content are significantly improved.
Description
Technical field
The present invention relates to the production technique of chemical fertilizer field ammonium nitrate magnesium, be specially a kind of method of 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 product pH scope 6 ~ 7, but under this pH condition, when product is water-soluble, there will be the cotton-shaped water-insoluble of macroscopic white, spray very easily occurs in spraying process stifled, this has just limited this product in the application spraying in establishing greatly; Because there is a large amount of dissociating water molecules on crystal (or particle) surface, exist, this just causes product aspect packed and transported, easily to occur the plate that lumps, and is unfavorable for long-distance transport and lengthy warehousing simultaneously; And be subject to the impact of water-insoluble and a large amount of dissociating water molecules of product surface, directly caused product purity on the low side.Therefore need a kind of fertilizer product that can overcome above-mentioned technical problem.
Summary of the invention
The present invention, for solving the current magnesium nitrate for fertilizer easily caking and product purity technical problem on the low side, provides a kind of method of 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 of 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 to carry out neutralization reaction, salpeter solution concentration is 40 ± 2%, temperature is controlled at 70 ~ 80 ℃ of stirring reaction 1.5 ~ 2h, regulates reaction solution pH to 6.5 ~ 7.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.080 ~ 1.400g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 1 ~ 5.5% of magnesium nitrate solution quality after concentrated, ammonium nitrate solution concentration is 50 ± 2%, carries out double evaporation-cooling and concentrate after stirring, and concentrate to proportion is 1.150 ~ 1.540g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
1, the present invention is by adjusting original magnesium nitrate products production equipment and process, thoroughly solved product poorly water-soluble, purity is on the low side, the problem of easy caking.
2, emphasis of the present invention is to have added in process of production a certain proportion of solidifying agent (ammonium nitrate).The major cause of product poorly water-soluble is to have the alkaline oxygenated magnesium not reacted to exist, partly solidified 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, so not only solved the shortcoming of product poorly water-soluble but also improved product purity; And another part solidifying agent and magnesium nitrate generation physical adsorption strengthen the mobility of material, thereby make the intensity enhancing on material surface, greatly reduce the generation of caking phenomenon, so just solve product transport for long-distance and lengthy warehousing in the caking phenomenon that occurs.
3, the magnesium nitrate that prior art is produced is white needle-like crystals (or particulate state), 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 in the market particulate state), product is water-soluble is limpid clear solution, stores for a long time and transport for long-distance no longer to occur caking phenomenon, and through secondary concentration, product content can reach 99 ~ 99.5%.
Described steel band tablets press can melt upstream process heat state material by the uniform thereunder at the uniform velocity mobile steel band of tablets press distributor; steel band below is provided with continuous spray, refrigerating unit; force material on steel band moving process be able to fast cooling, solidify, thereby reach the object of granulating and forming.
The present invention adjusts by production equipment and process, realized product and can not be subject to effect of natural conditions (as: at Various Seasonal and temperature, product does not lump substantially), and water-soluble and content obviously improves; Because product contains magnesium and ammonium simultaneously, nutrient is more comprehensive than ammonium nitrate simultaneously, and plant can directly absorb, and in agricultural, result of use is good.
Accompanying drawing explanation
Fig. 1 process flow sheet of the present invention.
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
1 one kinds of methods of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium of embodiment, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor to carry out neutralization reaction, salpeter solution concentration is 40%, temperature is controlled at 72 ℃ of stirring reaction 1.5h, regulates reaction solution pH to 6.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.300g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 4.5% of magnesium nitrate solution quality after concentrated, and ammonium nitrate solution concentration is 48%, carries out double evaporation-cooling concentrated after stirring, and concentrate to proportion is 1.540g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
During the middle concentrate of described step (d), the Heating temperature of employing is 150 ℃.
While entering steel band, temperature is controlled at 75 ℃, and temperature is cooled to 30 ℃ and is solidified as semisphere sheet.
2 one kinds of methods of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium of embodiment, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor to carry out neutralization reaction, salpeter solution concentration is 41%, temperature is controlled at 76 ℃ of stirring reaction 1.7h, regulates reaction solution pH to 7.0 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.080g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 5.5% of magnesium nitrate solution quality after concentrated, and ammonium nitrate solution concentration is 49%, carries out double evaporation-cooling concentrated after stirring, and concentrate to proportion is 1450g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
During the middle concentrate of described step (d), the Heating temperature of employing is 145 ℃.
While entering steel band, temperature is controlled at 65 ℃, and temperature is cooled to 26 ℃ and is solidified as semisphere sheet.
3 one kinds of methods of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium of embodiment, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor to carry out neutralization reaction, salpeter solution concentration is 39%, temperature is controlled at 78 ℃ of stirring reaction 1.6h, regulates reaction solution pH to 7.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.200g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 3.5% of magnesium nitrate solution quality after concentrated, and ammonium nitrate solution concentration is 50%, carries out double evaporation-cooling concentrated after stirring, and concentrate to proportion is 1.300g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
During the middle concentrate of described step (d), the Heating temperature of employing is 140 ℃.
While entering steel band, temperature is controlled at 85 ℃, and temperature is cooled to 28 ℃ and is solidified as semisphere sheet.
4 one kinds of methods of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium of embodiment, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor to carry out neutralization reaction, salpeter solution concentration is 38%, temperature is controlled at 70 ℃ of stirring reaction 1.8h, regulates reaction solution pH to 6.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.400g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 2.5% of magnesium nitrate solution quality after concentrated, and ammonium nitrate solution concentration is 52%, carries out double evaporation-cooling concentrated after stirring, and concentrate to proportion is 1.150g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
During the middle concentrate of described step (d), the Heating temperature of employing is 155 ℃.
While entering steel band, temperature is controlled at 95 ℃, and temperature is cooled to 24 ℃ and is solidified as semisphere sheet.
5 one kinds of methods of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium of embodiment, comprise the following steps: (a) by magnesium oxide and nitric acid in molar ratio 1:2 add reactor to carry out neutralization reaction, salpeter solution concentration is 42%, temperature is controlled at 80 ℃ of stirring reaction 2h, regulates reaction solution pH to 7.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.350g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 1% of magnesium nitrate solution quality after concentrated, and ammonium nitrate solution concentration is 51%, carries out double evaporation-cooling concentrated after stirring, and concentrate to proportion is 1.250g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
During the middle concentrate of described step (d), the Heating temperature of employing is 160 ℃.
While entering steel band, temperature is controlled at 100 ℃, and temperature is cooled to 20 ℃ and is solidified as semisphere sheet.
The production equipment that the present invention adopts as shown in Figure 2, in Fig. 2, in dilute acid bath 1, fill rare nitric acid, in magnesium oxide groove 2, fill magnesium oxide, 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, be used for filtering magnesium nitrate neutralizer, plate and frame(type)filter press 4 discharge ports are connected with clear liquid groove 5, clear liquid groove 5 discharge ports are 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 liquid bath 7 another opening for feeds are 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 ports are 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 to be connected with the entrance of the feeding device 13 of steel band tablets press, steam boiler 10 to once, second evaporator provides steam.Connect on the pipeline of each container and be equipped with pump for pumping solution.In Fig. 2, arrow direction is the flow direction of solution or material.
On second evaporator, offer steam inlet and outlet.On steel band tablets press 12, offer entrance of cooling water and outlet, steam inlet wherein, vapour outlet adopts upper entering and lower leaving, and entrance of cooling water 14a, cooling water outlet 14b adopt bottom in and top out.Steel band tablets press adopts single steel band granulation flaker that above Nereid's great waves steel band Science and Technology Ltd. produces, device numbering: JT3000-1.5-17.5.
Claims (3)
1. a method of 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 to carry out neutralization reaction, salpeter solution concentration is 40 ± 2%, temperature is controlled at 70 ~ 80 ℃ of stirring reaction 1.5 ~ 2h, regulates reaction solution pH to 6.5 ~ 7.5 afterwards with magnesium oxide; (b) the magnesium nitrate neutralizer obtaining enters plate and frame(type)filter press and filters, and obtains transparent filtrate; (c) filtrate is pumped into single vaporization device and carry out evaporation concentration, being evaporated to proportion is 1.080 ~ 1.400g/cm
3; (d) to the magnesium nitrate solution after concentrated, add ammonium nitrate solution, described ammonium nitrate solution accounts for 1 ~ 5.5% of magnesium nitrate solution quality after concentrated, ammonium nitrate solution concentration is 50 ± 2%, carries out double evaporation-cooling and concentrate after stirring, and concentrate to proportion is 1.150 ~ 1.540g/cm
3; (e) concentrated solution enters steel band tablets press, through the granulation generation semisphere sheet ammonium nitrate magnesium finished product of steel band tablets press.
2. a kind of method of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium as claimed in claim 1, is characterized in that, during the middle concentrate of described step (d), the Heating temperature of employing is 140 ~ 160 ℃.
3. a kind of method of utilizing steel band tablets press to produce full water-soluble ammonium nitrate magnesium as claimed in claim 1 or 2, is characterized in that, while entering steel band, temperature is controlled at 65 ~ 100 ℃, and temperature is cooled to 20 ~ 30 ℃ and is solidified as semisphere sheet.
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| 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 |
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| 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725097A (en) * | 2015-03-20 | 2015-06-24 | 路永宽 | Method for producing full water-soluble magnesium potassium ammonium nitrate by virtue of steel belt granulation |
| CN104725098A (en) * | 2015-03-20 | 2015-06-24 | 路永宽 | Method for producing all-water-soluble calcium ammonium magnesium nitrate by steel strip granulation |
| CN104744100A (en) * | 2015-03-20 | 2015-07-01 | 路永宽 | Method for full water-soluble calcium and magnesium ammonium nitrate by disc granulation |
| CN106517266A (en) * | 2016-12-08 | 2017-03-22 | 大连百傲化学股份有限公司 | Production method for magnesium nitrate hexahydrate |
| CN110668847A (en) * | 2019-11-04 | 2020-01-10 | 山西华鑫肥业股份有限公司 | Production method of large-particle magnesium nitrate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725097A (en) * | 2015-03-20 | 2015-06-24 | 路永宽 | Method for producing full water-soluble magnesium potassium ammonium nitrate by virtue of steel belt granulation |
| CN104725098A (en) * | 2015-03-20 | 2015-06-24 | 路永宽 | Method for producing all-water-soluble calcium ammonium magnesium nitrate by steel strip granulation |
| CN104744100A (en) * | 2015-03-20 | 2015-07-01 | 路永宽 | Method for full water-soluble calcium and magnesium ammonium nitrate by disc granulation |
| 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 |
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| CN110668847A (en) * | 2019-11-04 | 2020-01-10 | 山西华鑫肥业股份有限公司 | Production method of large-particle magnesium nitrate |
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|---|---|
| CN104086235B (en) | 2016-02-24 |
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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 |