The method of obtaining nesliving organomineral fertilizer of prolonged action

 

(57) Abstract:

The invention relates to the production of nesliving organic-mineral fertilizers. The essence of the method lies in the fact that the granules of mineral fertilizers applied hydrophilic modifier, which is used as the residue remaining after the extraction of biologically active substances from lake sapropels in the amount of 1 - 35%. The solubility of the obtained granules is 25 to 42% for the day, and caking does not exceed 10 kPa. table 1.

The invention relates to the production of nesliving organic-mineral fertilizers.

In fertilizer technologies known method of modifying the surface of the fertilizer granules by anti-caking agent, which is used hydrophilic natural silicates and aluminium silicates, diatomaceous earth, kaolin, perlite, etc. in the amount of 0.05 - 5 wt.% /1/.

The main disadvantage of this method is that the modifier in the granule is a ballast substance that is not used by the plants.

The closest in technical essence and the achieved effect is a method of reducing the caking of fertilizers by processing the conditioning additive, as cotoletta, first, the production of fertilizers, the solubility of which 10 minutes is from 64 to 84%. Secondly, to obtain sapropel humidity 10-20%, it is necessary to expend energy for drying the initial 50% of sapropel. And, thirdly, sapropels are the most valuable natural raw materials used in medicine for the treatment and preparation of masks, as well as for treatment of biologically active components, which are different drugs.

The objective of the proposed method of improving the efficiency of hydrophilic modifier and getting nesliving organomineral fertilizer of prolonged action.

The essence of the proposed method lies in the fact that the granules of mineral fertilizers applied hydrophilic modifier, which is used as the residue remaining after the extraction of biologically active substances (BAS) from lake sapropels in the number 1-35 wt.% Caking of the obtained granules is less than 10 kPa, and the solubility of 25-42% per day.

The main distinctive features of the proposed solution are as follows.

1. As hydrophilic modifier prototype used sapropels, dried to a moisture content of 1 is Aasee time not disposed of and stored in dumps. Precipitation after extraction have humidity 10% to 25%, which allows them to be applied on the surface of granulated mineral fertilizers without additional processing.

2. Precipitation remaining after extraction of biologically active substances from sapropel and deposited on the surface of mineral fertilizers, are not inert substances, and contain traces of contaminants in the form of CaO (3,1 - 8,5%), Fe2O3(0,65 - to 6.43%), MnO (0,11 - 0,51%), MgO (0,65 - 0,8%), P2O5(0.04 to 13%), nitrogen (0,17 - 1,14%), and others, which are used by plants.

3. The number of added modifier ranges from 1 to 35 wt.%. The reduction of the flow modifier is less than 1% is impractical because the powder modifier does not form on the surface of granules of a monolayer of particles smaller than 10 μm, thereby leaving the unprotected areas of the surface that contribute to caking of the granules.

The flow modifier should not exceed 35 wt.%, because the surface sediment layer becomes thick and not strong enough, and mechanical effects begin to break.

The flow conditioner additives prototype is 0.3 - 6 wt.%.

4. In the proposed method, the solubility of the modified granules is 25 to 42% for the day,received after extraction of biologically active substances, has a great time swelling compared with a net sapropel, because the extraction process changes its structure. In addition, when applying a sufficiently thick layer of sludge pellets need more time for the swelling dense layer and diffusion of mineral fertilizers from the center of the pellet to its edge.

The solubility depends on the properties of the sediment, which is derived from lacustrine sapropel different origin. So for sediment organic sapropel solubility is 34 - 42% per day, from organogenesis 25 - 29%, of the carbonate 25 - 27%. The solubility limits are explained by the properties of original sapropel. The decrease in solubility compared to the prototype allows to obtain organic fertilizer of prolonged action, which is important for the plants themselves. Fertilizer prolonged action does not cause burns to the root system of plants.

5. The proposed method can be obtained as fertilizer anticlimaxes additive when making sapropel sediment from 1 to 10 wt.%, and complex organic-mineral fertilizers with the introduction of sediment in larger quantities from 10 to 35 wt.%. That is, depending on the requirements of the consumer can receive the koi from 0.3 to 6 wt.%.

An example of a specific implementation.

500 g of nitrophos mix the pellet with 5 g of sediment (1 wt.%), obtained after extraction of biologically active substances from calcareous sapropel and having a humidity of 10%. Caking of the granules is less than 10 kPa, and the solubility of 25% per day.

Examples of the ultimate and transcendent values presented in the table.

Thus, the proposed method is the use of rainfall after extraction of biologically active substances from lacustrine sapropel as a hydrophilic modifier in the amount of 1-35 wt. % allows to obtain mineral fertilizers with anticlimaxes additive and complex organomineral fertilizer of prolonged action, the solubility of which is 25 to 42% for the day.

Sources of information

1. Kuvshinnikov I. M. Mineral fertilizers and salt. - M.: Chemistry, 1987, S. 183 - 185.

2. A. S. N 1096261 the USSR. A method of reducing the caking of fertilizers. Publ. 07.06.84. Bull. N 21. MCI C 05 C 1/02.

The method of obtaining nesliving organomineral fertilizer of prolonged action by handling of mineral fertilizers hydrophilic modifier, characterized in that as a modifier use ostvarenome obtained granules is 25 - 42% per day.

 

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