CN1012167B - Prepn. of urea potassium phosphate - Google Patents
Prepn. of urea potassium phosphateInfo
- Publication number
- CN1012167B CN1012167B CN 87105102 CN87105102A CN1012167B CN 1012167 B CN1012167 B CN 1012167B CN 87105102 CN87105102 CN 87105102 CN 87105102 A CN87105102 A CN 87105102A CN 1012167 B CN1012167 B CN 1012167B
- Authority
- CN
- China
- Prior art keywords
- urea
- potassium
- drying
- mixed
- 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.)
- Expired
Links
Landscapes
- Fertilizers (AREA)
Abstract
The present invention relates to a method for preparing potassium phosphate urea ternary compound fertilizers, which comprises the steps that potassium dihydrogen phosphate, urea and water are mixed according to a certain proportion; the granulation and the drying are carried out under the condition of rolling; the potassium dihydrogen phosphate is dissolved in an external layer coated with the urea, and thereby, the compound fertilizer having different proportions of nitrogen, phosphorus and kalium is obtained. The present invention has the advantages of simple technology, low cost and convenient large-scale serialization production, thereby, the potassium phosphate urea chemical fertilizer having high concentration is widely popularized and widely applied.
Description
The present invention relates to a kind of manufacturing three elements complex fertilizer, particularly a kind of processing method of making particulate state phosphoric acid potassium urea Wrapped fertilizer.
Apply for a patent CN85101008, on April 1 85 year applying date, patent gazette 3 38 phases of volume have been introduced a kind of Wrapped fertilizer and manufacture method thereof, are to be core with granulous urea or ammonium nitrate or phosphorus ammonium or ammonium chloride.With nitrogen phosphorus mud is binding agent, and precipitated superphosphate or fused(calcium magnesium)phosphate or bone meal are wrapped up said core, forms Wrapped fertilizer.Between core and integument, can add potash fertilizer, little fertilizer, agricultural chemicals, plant-growth regulator, form interlayer.This manufacture method exists processing requirement relatively stricter, operates also more complicated, is not suitable for small business's processing, shortcomings such as cost height.
The processing method that the purpose of this invention is to provide a kind of simple manufacturing particulate state phosphoric acid potassium urea Wrapped fertilizer, it is big that the fertilizer of being produced by this processing method has the element ratio range of choice concurrently, total high characteristics of effective element content.
The object of the present invention is achieved like this: potassium primary phosphate, agricultural urea, water are mixed, and granulating and drying under rolling makes the molten skin that is wrapped in urea of potassium primary phosphate, thereby makes the compound manure of nitrogen, phosphorus, potassium different ratios.
The manufacture method of this nitrogen, phosphorus, the compound Wrapped fertilizer of potassium ternary is as follows:
1, be mixed: with agricultural potassium primary phosphate, urea and water, with 1: 0.1-10: the weight ratio of 0.02-2.0 was mixed 0.01-5 hour under 10-80 ℃ of temperature.
2, granulating and drying: the material that will be mixed, place in the round wheelwork, moltenly wrap up in granulation and carry out drying.The temperature 30-90 of granulating and drying ℃; The granulating and drying time is 0.1-10 hour.
3, screening and finished product: the particulate matter that drying is good, according to the requirement that agricultural is used, carry out twice screening.Screen overflow is a macrobead for the first time, and screen underflow is a meal for the second time, returns the operation that is mixed.Screen overflow is a finished product for the second time, and according to the difference of prescription, the proportional range of element is in potassium phosphate urea: N 4.2-42.0%; P
2O
544.1-4.4%; K
2O29.5-3.0%; H
2O is below 1.0%.
Technology of the present invention is simple, and production cost is low, can serialization production, can produce the potassium phosphate urea of different nitrogen phosphoris and potassium fertilizer ratios according to agricultural demand.Potassium phosphate urea is a kind of high-concentration compound fertilizer material, because nitrogen, phosphorus, each component of potassium are made of best base fertilizer, nitrogen all is the ammonia attitude, phosphorus all is water-soluble, and potassium is potassiumphosphate, and the chlorion in the fertilizer, content of fluoride ion are very low, the range of choice of potassium phosphate urea Nitrogen, Phosphorus and Potassium is big, therefore it is suitable for various soil, various crop, various breeding time and uses, and also can do base, topdressing is used for root and executes, and can also spray by blade.
Below will the invention will be further described by embodiment:
Embodiment 1:
Get 100.4 kilograms in urea of agricultural (content 99.7%, two urine 0.8% contract), potassium primary phosphate 60.2 kilograms of (content 87.93%, Cl
-0.63%, SO
-2 46.63%, F
-0.015%, H
2O5.55%), water is 6 kilograms.Through be mixed, molten granulation and the drying wrapped up in, 158.7 kilograms of potassium phosphate ureas, the urea rate of recovery is 99.5%.Processing condition in the present embodiment are:
(1) is mixed
Weight ratio: KH
2PO
4: (NH
2) CO
2: H
2O=1: 2: 0.12
Be mixed the time: 0.25-1.5 hour
Temperature is mixed: 25-35 ℃
(2) granulating and drying
Granulation mode: cylinder
Drying source: warm air
Granulating and drying time: 1-2 hour
Granulating and drying temperature: 60-80 ℃
Back powder rate: 25-40%
The potassium phosphate urea product quality indicator
The project quality index
1, total effective ingredient 59.19%
Wherein: nitrogen (N) 29.69%
Phosphorus (P
2O
5) 16.61%
Potassium (K
2O) 12.89%
2, vitriol (SO
-2 2) 2.40%
3, muriate (Cl
-) 0.19%
4, fluorochemical (F
-) 0.005%
5, contract two urine 0.55%
6, moisture 0.99%
Embodiment 2:
Get 100.4 kilograms in urea of agricultural (content 99.7%, two urine 0.8% contract), potassium primary phosphate 120.4 kilograms of (content 87.93%, Cl
-0.63%, SO
2- 46.63%, F
-0.015%, H
2O 5.55%), H
210 kilograms of O.Through be mixed, molten wrap up in granulation, drying after, 215.3 kilograms of potassium phosphate ureas, the urea rate of recovery is 99.5%.Processing condition in the present embodiment are:
(1) is mixed
Weight ratio: KH
2PO
4(NH
2) CO: H
2O=1: 1: 0.1
Be mixed the time: 0.5-2 hour
Temperature is mixed: 30-40 ℃
(2) granulating and drying
Granulation mode: cylinder
Drying source: warm air
Granulating and drying time: 1.5-2.5 hour
Granulating and drying temperature: 60-85 ℃
Back powder rate: 25-40%
The potassium phosphate urea product quality indicator
The project quality index
1, total effective ingredient 65.0%
Wherein: nitrogen (N) 21.7%
Phosphorus (P
2O
5) 24.3%
Potassium (K
2O) 19.0%
2, vitriol (SO
-2 4) 3.5%
3, muriate (Cl
-) 0.33%
4, fluorochemical (F
-) 0.008%
5, contract two urine 0.4%
6, moisture 1.0%
Claims (1)
1, by potassium primary phosphate, agricultural urea and water through being mixed, moltenly wrap up in granulation, drying is produced the molten method that is wrapped in the outer fertilizer of urea of a kind of potassium primary phosphate, it is characterized in that potassium primary phosphate, agricultural urea and the water weight ratio that is mixed is 1: 0.1-10: 0.02-2,10-80 ℃ of the temperature that is mixed, the time of being mixed is 0.01-5 hour, 30-90 ℃ of granulating and drying temperature, 0.1-10 hour granulation time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87105102 CN1012167B (en) | 1987-10-24 | 1987-10-24 | Prepn. of urea potassium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87105102 CN1012167B (en) | 1987-10-24 | 1987-10-24 | Prepn. of urea potassium phosphate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032777A CN1032777A (en) | 1989-05-10 |
| CN1012167B true CN1012167B (en) | 1991-03-27 |
Family
ID=4815191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87105102 Expired CN1012167B (en) | 1987-10-24 | 1987-10-24 | Prepn. of urea potassium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012167B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075045C (en) * | 1993-07-08 | 2001-11-21 | 凯米拉公司 | A process for manufacturing compound fertilizers |
| CN1100739C (en) * | 1999-12-12 | 2003-02-05 | 钟思礼 | Granular potassium ammonium phosphate and its production process |
| CN106278389A (en) * | 2016-08-12 | 2017-01-04 | 吉林万通集团有限公司 | Potassium phosphate is urinated |
-
1987
- 1987-10-24 CN CN 87105102 patent/CN1012167B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032777A (en) | 1989-05-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |