CN1039777A - The manufacture method of diammonium phosphate - Google Patents
The manufacture method of diammonium phosphate Download PDFInfo
- Publication number
- CN1039777A CN1039777A CN 88104525 CN88104525A CN1039777A CN 1039777 A CN1039777 A CN 1039777A CN 88104525 CN88104525 CN 88104525 CN 88104525 A CN88104525 A CN 88104525A CN 1039777 A CN1039777 A CN 1039777A
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- CN
- China
- Prior art keywords
- phosphoric acid
- diammonium phosphate
- dilute phosphoric
- manufacture method
- phosphate
- 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.)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/28—Ammonium phosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a kind of method of making diammonium phosphate, make raw material with Rock Phosphate (72Min BPL), the vitriol oil and ammonia, through preparation dilute phosphoric acid, suction filtration and operations such as concentrated dilute phosphoric acid, pre-neutralization, reaction granulation, drying and screening, obtain granular diammonium phosphate product, product is a kind of efficient agricultural chemical fertilizer.The advantage of present method is not need main equipment just can obtain high-quality diammonium phosphate chemical fertilizer.
Description
The present invention relates to a kind of method of making diammonium phosphate.
Diammonium phosphate is a kind of agrochemical efficiently, but has all adopted complicated main equipment in the method for this chemical fertilizer of existing preparation, makes that medium-sized and small enterprises are difficult to produce.
Task of the present invention is the method that a kind of simple manufacturing diammonium phosphate chemical fertilizer will be provided.
The present invention is the task that solves like this: to contain P
2O
5Rock Phosphate (72Min BPL), the vitriol oil and ammonia be raw material, through preparation dilute phosphoric acid, suction filtration dilute phosphoric acid, concentrate operations such as dilute phosphoric acid, pre-neutralization, reaction granulation, dried and screened, finally obtain granular diammonium phosphate.
Below by embodiment the present invention is described further.
Accompanying drawing 1 is the process flow sheet of the diammonium phosphate manufacture method of proposition according to the present invention.
The starting material that use in the present embodiment are: Rock Phosphate (72Min BPL) (P
2O
5Content＞28%, and cross sieve No. 100), the vitriol oil (concentration 〉=93%), ammonia (purity 99.5%).
Manufacturing processed is as shown in Figure 1:
One, preparation dilute phosphoric acid: in container (1), add 350Kg water 11, and the feeding water vapor makes the temperature of water 11 about 60 ℃, when stirring, add 350Kg ground phosphate rock 12, slowly add the 260Kg vitriol oil 13 again, and then the feeding water vapor makes the fluid temperature in the container be about 104 ℃.
Two, suction filtration dilute phosphoric acid: use suction filter (2) suction filtration the liquid that obtains in the above-mentioned operation leaves standstill 12 hours in container (1) after, thereby obtain dilute phosphoric acid 14 and phosphogypsum 15.
Three, concentrate dilute phosphoric acid: the dilute phosphoric acid 14 that suction filtration goes out is poured in the concentrating pan (3), made solution concentration to phosphoric acid about 48%.
Four, pre-neutralization: in the container that fills spissated phosphoric acid (4), feed ammonia 16, obtain the phosphoric acid solution of certain ammonia quantity.
Five, reaction granulation: the phosphoric acid solution of pre-neutralization and ammonia 16 are continued neutralization (phosphoric acid of 100Kg48% and 17.5Kg ammonia neutralize fully), join in the rotary drum ammoniation-granulation device (5), make granular diammonium phosphate.Wherein the chemical reaction that carries out is:
Six, drying: in moisture eliminator (6), the excess water in the granular diammonium phosphate that obtains is removed.
Seven, screening: dried diammonium phosphate particle is screened with sieve (7), and purpose is to guarantee that product has suitable granularity.
Through said process, obtain even-grained diammonium phosphate solid particulate, its Specifeca tion speeification sees attached list 1.
Nitrogen is not less than 13%
P
2O
5Be not less than 46%
Water 1.5%
Granularity (φ 3-5mm) is not less than 85%
Claims (3)
1, a kind of method of making diammonium phosphate comprises: with the operation that contains the Rock Phosphate (72Min BPL) of Vanadium Pentoxide in FLAKES and operation that strong sulfuric acid response is produced dilute phosphoric acid, suction filtration dilute phosphoric acid, the pre-neutralization operation, the reaction that concentrate operation, spissated dilute phosphoric acid and the ammonia gas react of the dilute phosphoric acid that suction filtration goes out produce diammonium phosphate particulate operation, drying process and screening operation.
2,, it is characterized in that the concentration of described spissated dilute phosphoric acid is not less than 48% according to the manufacture method of claim 1.
3,, it is characterized in that the quantity of described diammonium phosphate particle diameter between 3 to 5mm should be more than or equal to 85% according to the manufacture method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104525 CN1039777A (en) | 1988-07-26 | 1988-07-26 | The manufacture method of diammonium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104525 CN1039777A (en) | 1988-07-26 | 1988-07-26 | The manufacture method of diammonium phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039777A true CN1039777A (en) | 1990-02-21 |
Family
ID=4833038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88104525 Pending CN1039777A (en) | 1988-07-26 | 1988-07-26 | The manufacture method of diammonium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039777A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857466A (en) * | 2010-05-25 | 2010-10-13 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular diammonium phosphate product |
| CN101935027A (en) * | 2010-09-10 | 2011-01-05 | 华东理工大学 | Method for preparing food-grade diammonium hydrogen phosphate from industrial wet-process phosphate |
| CN103539487A (en) * | 2012-07-10 | 2014-01-29 | 山东明瑞化工集团有限公司 | Method of preparing ammonium dihydrogen phosphate |
| WO2020088271A1 (en) * | 2018-10-31 | 2020-05-07 | 湖北富邦科技股份有限公司 | Method for improving glass feeling of diammonium phosphate surface |
| CN113479859A (en) * | 2021-06-11 | 2021-10-08 | 湖北宜化肥业有限公司 | Method for producing diammonium phosphate from phosphorite with high impurity content |
-
1988
- 1988-07-26 CN CN 88104525 patent/CN1039777A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857466A (en) * | 2010-05-25 | 2010-10-13 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular diammonium phosphate product |
| CN101857466B (en) * | 2010-05-25 | 2012-10-31 | 瓮福（集团）有限责任公司 | Production method of low-fluoride granular diammonium phosphate product |
| CN101935027A (en) * | 2010-09-10 | 2011-01-05 | 华东理工大学 | Method for preparing food-grade diammonium hydrogen phosphate from industrial wet-process phosphate |
| CN103539487A (en) * | 2012-07-10 | 2014-01-29 | 山东明瑞化工集团有限公司 | Method of preparing ammonium dihydrogen phosphate |
| CN103539487B (en) * | 2012-07-10 | 2016-03-23 | 山东明瑞化工集团有限公司 | Produce the method for phosphorus ammonium |
| WO2020088271A1 (en) * | 2018-10-31 | 2020-05-07 | 湖北富邦科技股份有限公司 | Method for improving glass feeling of diammonium phosphate surface |
| CN113479859A (en) * | 2021-06-11 | 2021-10-08 | 湖北宜化肥业有限公司 | Method for producing diammonium phosphate from phosphorite with high impurity content |
| CN113479859B (en) * | 2021-06-11 | 2022-06-21 | 湖北宜化肥业有限公司 | Method for producing diammonium phosphate from phosphorite with high impurity content |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |