SU893980A1 - Method of producing complex fertilizer - Google Patents
Method of producing complex fertilizer Download PDFInfo
- Publication number
- SU893980A1 SU893980A1 SU802902234A SU2902234A SU893980A1 SU 893980 A1 SU893980 A1 SU 893980A1 SU 802902234 A SU802902234 A SU 802902234A SU 2902234 A SU2902234 A SU 2902234A SU 893980 A1 SU893980 A1 SU 893980A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- complex fertilizer
- producing complex
- fertilizer
- magnesium carbonate
- urea
- Prior art date
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- Fertilizers (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ КОМПЛЕКСНОГО УДОБРЕНИЯ(54) METHOD OF OBTAINING COMPLEX FERTILIZER
1one
Изобретение относитс к способу получени комплексных удобрений, представл ющих собой двойные соли нитрата магни и карбамида.The invention relates to a process for the preparation of complex fertilizers, which are double salts of magnesium nitrate and urea.
Известен способ получени минерального удобрени на основе нитрата кальци и карбамида, при котором к плаву нитрата кальци при 120130С добавл ют карбамид в мольном соотношении нитрат кальци и капбамид 1:4 соответственно СПA known method of producing mineral fertilizer based on calcium nitrate and carbamide, in which carbamide is added to the melt of calcium nitrate at 120130 ° C in a molar ratio of calcium nitrate and capbamide 1: 4, respectively, SP
Недостатком этого способа ЯБЛЯ етс низкое содержание питательных элементов 29,7%, высока температура получени комплексного удобрени , способствукнца образованию биурета, а также отсутствие магни .The disadvantage of this APPLICATION method is the low nutrient content of 29.7%, the high temperature of the preparation of the complex fertilizer, the promotion of biuret formation, and the absence of magnesium.
Наиболее близким по технической сущности и достигаемому результату к предлагаемому вл етс способ получени комплексного удобрени путем смешени карбонатов магни и кальци с карбамидом. В. качестве карбоната магни и кальци берутThe closest in technical essence and the achieved result to the proposed is a method of obtaining a complex fertilizer by mixing magnesium carbonates and calcium with urea. V. as a carbonate of magnesium and calcium take
обогащенный кальцием доломит и вместе с карбамидом подают в гранул тор в виде гранул размером около 5 мм. Реакци идет в твердой фазе при 120-130°С, в течение 30-60 мин. В результате реакции получаетс продукт с содержанием 4,4% МдО-цитратнорастворимого и 37% N. На поверхности гранул карбамида образуетс слой Мд-карбамидных комплексов, ко10 торые св зывают карбонат кальци в твердые покрыти , повышающие прочность гранулированного удобрени 23.Calcium-enriched dolomite and, together with urea, are fed into the granulator in the form of granules about 5 mm in size. The reaction takes place in the solid phase at 120-130 ° C for 30-60 minutes. The reaction produces a product with a content of 4.4% MgO-citrate-soluble and 37% N. A layer of Mg-carbamide complexes is formed on the surface of carbamide granules, which bind calcium carbonate into hard coatings, which increase the strength of granular fertilizer 23.
Недостатком этого способа вл 15 етс ведение реакции в твердой фа .зе при высокой температуре, при которой возможно образование биурета, а также неуравновешенное соотношение питательных элементов (N:MgO 8:1), The disadvantage of this method is that the reaction is conducted in solid phase at high temperature, at which biuret can be formed, as well as an unbalanced ratio of nutrients (N: MgO 8: 1),
20 при этом магний находитс в цитратнорастворимой форме. Удобрение имеет низкое содержание водорастворимых питательных веществ (.37%) .20 wherein the magnesium is in citrate soluble form. Fertilizer has a low content of water-soluble nutrients (.37%).
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802902234A SU893980A1 (en) | 1980-04-01 | 1980-04-01 | Method of producing complex fertilizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802902234A SU893980A1 (en) | 1980-04-01 | 1980-04-01 | Method of producing complex fertilizer |
Publications (1)
Publication Number | Publication Date |
---|---|
SU893980A1 true SU893980A1 (en) | 1981-12-30 |
Family
ID=20886338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802902234A SU893980A1 (en) | 1980-04-01 | 1980-04-01 | Method of producing complex fertilizer |
Country Status (1)
Country | Link |
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SU (1) | SU893980A1 (en) |
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1980
- 1980-04-01 SU SU802902234A patent/SU893980A1/en active
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