RU2000129533A

RU2000129533A - COMPLEX GRANULAR FERTILIZER OF PROLONGED ACTION WITH MICRO ELEMENTS AND A METHOD FOR ITS OBTAINING

Info

Publication number: RU2000129533A
Application number: RU2000129533/12A
Authority: RU
Inventors: Геодар Федорович Гаврилин; Григорий Дмитриевич Андреев; Елена Михайловна Могилевская; Александр Петрович Новиков; Николай Александрович Донских; Валентин Васильевич Шелудько; Виктор Никифорович Вергунов
Original assignee: Кемеровский агрохимический завод Закрытое акционерное общество "Вика"
Filing date: 2000-11-24
Publication date: 2002-11-10

Claims

1. Complex granular fertilizer of prolonged action with microelements, including phosphate rock, urea, potassium chloride, ammonium sulfate, characterized in that it has a balanced ratio of nitrogen, phosphorus, potassium and includes the spectrum of microelements necessary for plants, wt. %:
Total nitrogen (N) - 4.5-18.0
including:
Amide - 4,49-18,0
Ammonium - 0.01-2.3
Total phosphorus (P ₂ O ₅ ) - 8-14
Potassium (K ₂ O) - 0.01-18.0
Magnesium (MgO) - 1.0-1.8
Zinc - 0.02-0.1
Copper - 0.01-0.02
Nickel - 0.01-0.03
Cobalt - 0.005-0.04
Chrome - 0.003-0.05
2. Complicated granular fertilizer of prolonged action with microelements according to claim 1, characterized in that it has improved physicomechanical properties: the static strength of the granules is 1.8-2.1 MPa, the friability is 100%.

3. Complex granular fertilizer of prolonged action with trace elements under item 1, characterized in that it contains 0.02-0.2 wt. % polyalkyleneglycol and their ethers (polyglycols).

4. Complex granular fertilizer of prolonged action with trace elements under item 1, characterized in that it contains 0.7-3.0 wt. % water.

5. A method of obtaining complex granular fertilizer of prolonged action with microelements by mixing dry source components, wetting the mixture with water, granulating, drying and sieving the granules, characterized in that the balance of the fertilizer composition is achieved by precise mass dosing of dry source components into the mixer.

6. A method of obtaining a complex granular fertilizer according to claim 5, characterized in that urea, ammonium sulfate, phosphate rock and potassium chloride are used as individual components in the ratio N: P ₂ O ₅ : K ₂ O, wt. %: 4.5-18: 8-18: 0.01-11.

7. A method of obtaining a complex granular fertilizer according to claim 5, characterized in that the mixture of dry initial components is moistened to a water content of 1.8-5.0 wt. %

8. A method of obtaining a complex granular fertilizer according to claim 5, characterized in that the presence of urea in the mixture leads to the formation of plastic suspensions in the temperature range 50-120 ^o With a wide variation in the composition of the mixture.

9. A method of obtaining a complex granular fertilizer according to claim 5, characterized in that in order to reduce dust formation and to obtain non-caking granules, a mixture of polyakylene polyols and their ethers (polyglycols) is introduced into the mixture before granulation in an amount of 0.02-0.2 wt. %

10. A method of obtaining a complex granular fertilizer according to claim 5, characterized in that the moistened mixture of the starting components is heated to form a plastic suspension 50-120 ^o С and granulated in a roller, or auger, or drum, or disc-shaped granulator at 50-120 ^o С .

11. The method of obtaining complex granular fertilizer according to claim 5, characterized in that when the water content in the granules is more than 3%, they are dried.