SU1087498A1 - Granulated complex fertilizer based on potassium phosphate glass - Google Patents

Abstract

GRANULATED COMPLEX FERTILIZER BASED ON PHOSPHATE GLASS, including P205 and trace elements in the form of MgO, ZnO and CuO, characterized in that. that, in order to inform the fertilizer of a sustained action at its full solubility in water, it additionally contains NaO, FeO,. At 0, and Moo in the following ratio of components,%: 20.0-40.0 2% 2.0-0.5 NajO 20.0-1.8 CaO 0.5-1.0 MgO 0.3 -1.0 FejOj 0.1-1.0 Mn jOj 0.03-0.1 CuO 0.05-0.2 0.09-0.3 ZnO i 0.025-0.1 MoO Balance K20 SL (Z

Description

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00 11 The invention relates to complex glass fertilizers used to nourish the root system of plants during the growing season. There are known complex long-acting fertilizers - frit containing microelements - Zn, Mn, Cu, Mo and Co Cl. The disadvantage of these fertilizers is the lack of the necessary components for plants - phosphorus and potassium. The closest in composition and the achieved result to the proposed is granular complex fertilizer based on phosphate-potassium glass, including,%: 63.33%; K20 27.95; CaO 7, A5, MgO 1.23-, ZnO 0.97i Co 0.044; CuO 0.004. All phosphorus is in citrate-soluble form, and 85% in water-soluble C 2}. A disadvantage of the known fertilizer is the low content of water-soluble forms. 2 5 The aim of the invention is to report a prolonged action of the fertilizer at its full solubility in water. The goal is achieved by the fact that the granular complex fertilizer based on phosphate-potassium glass, including PgOj, K20, CaO and trace elements in the form of MgO, ZnO and CuO, additionally contains oxides of iron, manganese, boron and molybdenum in the following ratio, wt.%: 20 , 0-40.0 2.0-0.5 20.0-1.8 0.5-1.0 0.3-1.0 0.1-1.0 0.03-0.1 0, 05-0.2 0.09-0.3 0.025-0.1 Else Glass leaching is associated with the transfer of available oxides in the hydroxide and mainly with the splitting of phosphates by water. In both cases, water-soluble hydrates form. Kislov. Both processes change when an oxide is replaced by an equal number of moles of the other. The selectivity of glass 8 is also affected by the molecular ratio of the same oxides found in glass. The fertilizer is prepared as follows. Double granulated superphosphate is subjected to grinding and sifting through a sieve. Prepare the mixture by mixing plant potash, crushed manganese ore and trace elements in the form of oxides. The basis for the calculation of the initial components take P Og-20%, K, 0-56.8%, 42.1 weight.h. double superphosphate, 83r5 weight.h. vegetable potash and 0.136 weight.h. manganese ore. The following oxides are introduced into the mixture with double superphosphate: CaO-, MgO; and S. The remaining components are introduced into the mixture chemically pure in absolute weights, i.e. CuO 0.03 - through copper oxide; ZnO 0.09 - through zinc white; 0 through boric acid. These components are loaded into a plate mix, where they are mixed, creating a homogeneous mechanical mixture of pre-prepared raw materials weighed according to a previously prescribed recipe. The mixture should be uniform. The mixture is introduced into a glass melting furnace heated to 1450 ° C. The resulting foamy and opaque melt permeated by bubbles of gases trapped in the reactions is discharged from the furnace along a metal pan that is washed with water. The glass melt, in contact with water, solidifies and, falling into a container with water, is granulated. During reactions in the charge, highly basic compounds, such as 2K20-P20u, are formed at the beginning, which strongly bind water and create favorable conditions for the formation of the maximum number of bubbles. Most often, the glass mass contains the following gases: oxygen, carbon dioxide, nitrogen, and water vapor. The determination of the chemical stability of the proposed vitreous fertilizer is made by the method of Keppler. When testing a substance whose chemical composition contains, in wt.%: 20, Oi KjO 56.8; - 2.0; CaO 20.0; MgO 0.5; 0.3; to 0.1-, CuO 0.03; 0.05; Zno

31087498 d

0.09; MoO 0.025; CaO 0.1 and when it is 0.1 0.1% CaO O, with a similar processing of 16.2 g of powder during processing, the dry residue was 5.73 g. 5 hours in distilled water at that; These results confirm

Water bath of 108 ° C dry weight can be prolonged use

The residue amounted to 3.4 g in SOO ml of plant-as fertilizer of the proposed bevor, and the powder containing in its composition, wt.7 „: PjOg 40.0; Kgr 54.0; NajO 0.5; CaO 1.8, MgO 1.0;

1.0; Mn O ljCuO 0.1; B ,, 2; ZnO 0.3; fertilizer.

the company.

The table presents the indicators of chemical resistance proposed

As it follows from the table, the full field tests of the complex fertility of the indicated fertilizers have been carried out during cultivation and have been observed for 5-6 years: the coagulator of the Pearl variety. Established

The pelvis of 1 fertilizer is approximately complete during the growing season from May to September; it is dissolved in 1770 days, atb 1981, the yield of rice or composition 2 — after 2132 days at 20 centners / ha.

i10874986

The economic effect of the proposed fertilizer applied to the soil. It,

of the invention to be obtained, in turn, entails a decrease in yield, agricultural transport costs, and

crops, duration of the reduction of pollution of water bodies and the action of fertilizers, reducing the number of 5spheres.

Claims (1)

Granular complex fertilizer BASED FOSFATNOKALIYNOGO GLASS comprising Ρ ₂ θ5 »^ 2θ 'and trace elements in the form of MgO, ZnO and CuO, characterized in that, in order to communicate fertilizer prolognirovannogo action at its full solubility in water, it additionally contains Νη ^ Ο , Fe ^ O ^, ^ ^η 2θ3 'BjOjH MoO in the following relation components, ma.a: ^P 2 ° 5 20,0-40,0 Na ₂ 0 2.0-0.5 CaO 20.0-1.8 MgO 0.5-1.0 Fe ₂ 0 ₃ 0.3-1.0 MP .-, 0 _a 0.1-1, 0 CuO ³ 0.03-0.1 ^At 2 ° 3 0.05-0.2 Zno 0.09-0.3 Moo 0.025-0.1 S to ₂ o Rest (L FROM Oh with oo>