CN106431563A - Method for adding zinc and magnesium into ammonium phosphate - Google Patents
Method for adding zinc and magnesium into ammonium phosphate Download PDFInfo
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- CN106431563A CN106431563A CN201610790979.6A CN201610790979A CN106431563A CN 106431563 A CN106431563 A CN 106431563A CN 201610790979 A CN201610790979 A CN 201610790979A CN 106431563 A CN106431563 A CN 106431563A
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- magnesium
- phosphorus ammonium
- zincification
- phosphorus
- slurry
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a method for adding zinc and magnesium into ammonium phosphate. The method comprises the steps: (1) adding solid ammonium phosphate into a slurry tank, and adding water into the slurry tank, so as to prepare an ammonium phosphate slurry solution, i.e., mixed slurry I; (2) introducing the mixed slurry I into a granulator for granulation, and adding magnesium chloride and zinc chloride into the granulator during granulating, so as to obtain compounded fertilizer granules; and (3) drying the compounded fertilizer granules by drying equipment, and then, carrying out cooling and screening. A wet-method adding process is changed into a dry-method adding process, and magnesium oxide and zinc oxide are added into the granulator from a revert bucket lifter L639. Popular magnesium products produced from October 14th, 2015 to October 23th, 2015 are produced by a dry-method magnesium and zinc adding process. Popular magnesium products of a second batch in 2015 are qualified and stable in nutrient index, low in moisture content and good in quality and are tack-free.
Description
Technical field
The present invention relates to technical field of phosphorous chemical industry, and in particular to zincification, the method for magnesium in a kind of phosphorus ammonium.
Background technology
Zinc oxide, magnesium oxide are water insoluble, are dissolved in acid and ammonium salt solution.After wet method system interpolation magnesium oxide, zinc oxide, pipe
In anti-complex acid liquid, content of magnesium increases, and increases the viscosity of slip, reduces the activity of Guan Fanzhong acid, and anti-reaction temperature is managed in impact, right
System loading and product water content produce considerable influence.
Content of the invention
It is an object of the invention to provide zinc, magnesium qualified, tack-free, the low method of moisture.
For solving above-mentioned technical problem, the present invention provides a kind of zincification, the method for magnesium in phosphorus ammonium, including：
Step one, solid phosphorus ammonium is added in slurry vessel, and water is added, prepare phosphorus phosphate slurry solution, mixed slurry one；
Step 2, compound one is passed through granulator granulation, and in granulation process, adds magnesium chloride and zinc chloride to obtain
Compound fertilizer granules；
Step 3, compound fertilizer granules are dried by drying equipment, cool down again, sieve after drying.
Preferably, solid phosphorus ammonium described in step one is the two or more of MAP, Diammonium phosphate (DAP) and calcium superphosphate.
Preferably, the phosphorus phosphate slurry solution described in step one directly introduces the phosphorus ammonium of ammonium phosphate plant ammonium phosphate slurry concentration operation
Enriching slurry solution；The phosphorus ammonium percentage by weight of the phosphorus ammonium enriching slurry solution is 65%-75%.
Preferably, the phosphorus ammonium enriching slurry solution is concentrated or is directly used again by standby vaporizer.
Preferably, the phosphorus ammonium percentage by weight in the mixed slurry described in step one is 65%～95%, temperature control
At 90～130 DEG C.
Preferably, the drying equipment described in step 3 is hot-air drying unit；The hot-air drying unit adopts hot blast
Upwards, the method for material decline counter current contacting is dried, and wherein hot blast is flowed up by the way of baffling.
Preferably, the hot blast of the hot-air drying unit controls at 50～150 DEG C, and compound fertilizer granules stop in drying unit
The time control that stays is in 5-30 minute.
Preferably, the magnesium chloride and zinc chloride directly enter comminutor from bucket elevator.
Preferably, the magnesium chloride and zinc chloride are powder, and granularity is 300～500 mesh.
The present invention provides magnesium, zinc addition to be included step one, adds solid phosphorus ammonium in slurry vessel, and adds water, prepares phosphorus
Ammonium slurry solution, mixed slurry one；Step 2, compound one is passed through granulator granulation, and chlorination is added in granulation process
Magnesium and zinc chloride obtain compound fertilizer granules；Step 3, compound fertilizer granules are dried by drying equipment, cooled down after drying again,
Screening.Plus wet method adding technology is changed to dry method adding technology, magnesium oxide, zinc oxide are made from addition at returning charge bucket elevator L639
Grain machine.During October 14 to October 23 in 2015, popular U.S.'s product of production all adds magnesium, zincification technique for dry method.2015
Popular U.S.'s product of year second lot, nutrient is qualified, stable, and product moisture content is low, and product is tack-free, and product quality is excellent
Good.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the reality in the present invention
Apply example, those of ordinary skill in the art under the premise of creative work is not made, the every other embodiment that obtained, all belong to
In the scope of the present invention.It should be noted that the equipment of all filtration steps of the present invention all preferably uses plate filter.
Embodiment 1
(1), the phosphor ammonium slurry containing 23% moisture that 440kg comes from ammonium phosphate enrichment process is continued by standby vaporizer tower
Continuous concentration, phosphor ammonium slurry of the gained containing 17% moisture, flow into phosphorus ammonium comminutor.
(2), the magnesium chloride of 300 mesh and potassium chloride are added in comminutor respectively from bucket elevator
(3), the particle after pelletize drops to the drying device below granulation tower, sends into 120 DEG C from drying device bottom
Hot blast, with material counter current contacting convection drying, excessive moisture is dried, obtains the phosphorus-ammonium compound fertilizer.
Obtained phosphorus-ammonium compound fertilizer product, the content of nitrogen is 12.43%, the content of phosphorus be (with P2O5Meter) 15.56%,
The content of magnesium be (being counted with MgO) 14.73%, Zn content as (being counted with ZnO) 15.76 moisture as 1.5%, indices meet
GB15063-2009.
Embodiment 2
(1), to slurry vessel addition 400kg ammonium phosphate, 50kg water, 40kg carbamide, 110-130 DEG C is heated to, through 30 points
Clock, is obtained the slip of the APP of short chain containing part.
(2), the magnesium chloride of 400 mesh and potassium chloride are added in comminutor respectively from bucket elevator
(3), the particle after pelletize drops to the drying device below granulation tower, sends into 100 DEG C from drying device bottom
Hot blast, with material counter current contacting convection drying, excessive moisture is dried, obtains the phosphorus-ammonium compound fertilizer.
Obtained phosphorus-ammonium compound fertilizer product, the content of nitrogen is 12.43%, the content of phosphorus be (with P2O5Meter) 15.56%,
It is that 1.5%, indices meet as (being counted with ZnO) as 15.4% moisture that the content of magnesium is (being counted with MgO) 14.44%, Zn content
GB15063-2009.
Embodiment 3
(1), to slurry vessel addition 340kg ammonium phosphate, 50kg water, 50kg carbamide, 110-130 DEG C is heated to, through 30 points
Clock, is obtained the slip of the APP of short chain containing part.
(2), the magnesium chloride of 300 mesh and potassium chloride are added in comminutor respectively from bucket elevator
(3), the particle after pelletize drops to the drying device below granulation tower, sends into 120 DEG C from drying device bottom
Hot blast, with material counter current contacting convection drying, excessive moisture is dried, obtains the phosphorus-ammonium compound fertilizer.Obtained phosphorus ammonium is multiple
Hefei product, the content of nitrogen is 12.41%, the content of phosphorus be (with P2O5Meter) 16.66% magnesium content be (in terms of MgO)
14.76%th, Zn content be (being counted with ZnO) be 14.98% moisture be 1.5%, indices meet GB15063-2009.
Percent in embodiment 1 to 3 is mass percent；Ammonium phosphate in embodiment 2 and 3 includes MAP
And/or Diammonium phosphate (DAP).
Above scheme provided by the present invention is described in detail.Specific case used herein is to the present invention's
Principle and embodiment are set forth, and the explanation of above example is only intended to help and understands the method for the present invention and its core
Thought.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, also
Some improvement being carried out to the present invention and being modified, these improve and modification also falls into the protection domain of the claims in the present invention
Interior.
Claims (9)
1. zincification, the method for magnesium in a kind of phosphorus ammonium, it is characterised in that include：
Step one, solid phosphorus ammonium is added in slurry vessel, and water is added, prepare phosphorus phosphate slurry solution, mixed slurry one；
Step 2, compound one is passed through granulator granulation, and in granulation process, adds magnesium chloride and zinc chloride to be combined
Fertile granule；
Step 3, compound fertilizer granules are dried by drying equipment, cool down again, sieve after drying.
2. zincification, the method for magnesium in phosphorus ammonium according to claim 1, it is characterised in that：Solid phosphorus ammonium described in step one
For the two or more of MAP, Diammonium phosphate (DAP) and calcium superphosphate.
3. zincification, the method for magnesium in phosphorus ammonium according to claim 1, it is characterised in that：Phosphorus ammonium material described in step one
Slurry solution directly introduces the phosphorus ammonium enriching slurry solution of ammonium phosphate plant ammonium phosphate slurry concentration operation；The phosphorus ammonium enriching slurry solution
Phosphorus ammonium percentage by weight is 65%-75%.
4. zincification, the method for magnesium in phosphorus ammonium according to claim 3, it is characterised in that：The phosphorus ammonium enriching slurry solution
Concentrated by standby vaporizer again or directly use.
5. zincification, the method for magnesium in phosphorus ammonium according to claim 1, it is characterised in that：Compound described in step one
Phosphorus ammonium percentage by weight in slurry is 65%～95%, and temperature control is at 90～130 DEG C.
6. zincification, the method for magnesium in phosphorus ammonium according to claim 1, it is characterised in that：Drying described in step 3 sets
Standby is hot-air drying unit；The hot-air drying unit using hot blast upwards, material decline counter current contacting method be dried,
Wherein hot blast is flowed up by the way of baffling.
7. zincification, the method for magnesium in phosphorus ammonium according to claim 6, it is characterised in that：The heat of the hot-air drying unit
Air control system is at 50～150 DEG C, and compound fertilizer granules residence time in drying unit controlled in 5-30 minute.
8. zincification, the method for magnesium in phosphorus ammonium according to claim 1, it is characterised in that：The magnesium chloride and zinc chloride are straight
Connect from bucket elevator and enter comminutor.
9. zincification, the method for magnesium in phosphorus ammonium according to claim 1, it is characterised in that the magnesium chloride and zinc chloride are
Powder, granularity is 300～500 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790979.6A CN106431563A (en) | 2016-08-31 | 2016-08-31 | Method for adding zinc and magnesium into ammonium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790979.6A CN106431563A (en) | 2016-08-31 | 2016-08-31 | Method for adding zinc and magnesium into ammonium phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106431563A true CN106431563A (en) | 2017-02-22 |
Family
ID=58164914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610790979.6A Pending CN106431563A (en) | 2016-08-31 | 2016-08-31 | Method for adding zinc and magnesium into ammonium phosphate |
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| CN (1) | CN106431563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590479A (en) * | 2019-09-20 | 2019-12-20 | 瓮福达州化工有限责任公司 | Composite phosphate fertilizer containing magnesium and zinc elements and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3285731A (en) * | 1963-07-22 | 1966-11-15 | Grace W R & Co | Magnesium potassium phosphate-containing fertilizer and process |
| CN1403423A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Low-tower molten slurry pelletizing method and apparatus to produce granulated multicomponent composite fertilizer |
| CN101412646A (en) * | 2008-04-08 | 2009-04-22 | 中国-阿拉伯化肥有限公司 | Preparation of nitro azophoska compound fertilizer |
| CN102633553A (en) * | 2012-04-27 | 2012-08-15 | 深圳市芭田生态工程股份有限公司 | Method for producing high-tower ammonium phosphate compound fertilizer |
-
2016
- 2016-08-31 CN CN201610790979.6A patent/CN106431563A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3285731A (en) * | 1963-07-22 | 1966-11-15 | Grace W R & Co | Magnesium potassium phosphate-containing fertilizer and process |
| CN1403423A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Low-tower molten slurry pelletizing method and apparatus to produce granulated multicomponent composite fertilizer |
| CN101412646A (en) * | 2008-04-08 | 2009-04-22 | 中国-阿拉伯化肥有限公司 | Preparation of nitro azophoska compound fertilizer |
| CN102633553A (en) * | 2012-04-27 | 2012-08-15 | 深圳市芭田生态工程股份有限公司 | Method for producing high-tower ammonium phosphate compound fertilizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590479A (en) * | 2019-09-20 | 2019-12-20 | 瓮福达州化工有限责任公司 | Composite phosphate fertilizer containing magnesium and zinc elements and preparation method thereof |
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Application publication date: 20170222 |