SU1049459A1 - Method for producing boron-containing fertilizers - Google Patents

Abstract

1. A method for producing boron-containing fertilizer by introducing boron containing waste into ground limestone, characterized in that, in order to increase the effectiveness of the fertilizer by increasing boron uptake and eliminating the effect of soil re-liming, boron-containing waste is used as boron acid from borate ores with a lime mass ratio of 10:

Description

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I. Izveshep, a method for producing boron-containing clay by sintering pre-warpted milled boron-containing silicate rocks with LiJ limestone.

The disadvantage of this method is etch: that it requires significant saipfrr for chopping rucci; limestone and cake, as well as firing at high temperatures--: tours. Boron in the fertilizer is in a slowly digestible form, which slows it down into the plant,

The closest in technical essence and the achieved result to the proposed method of obtaining Borsoder 5) Cet0 ;; scare them in the future: SRI E {.-Yzglolsky; -i3EecniHK

According to this method, as a waste, carbonate waste of calcium borate to sodium neborate is used as waste, containing boron compounds, soluble in 2% carbonic acid at a mass ratio of ground from herald and boron waste equal to South {O, .3-0.6) i2.

The disadvantages of this method are x; boron digestibility and the presence of places from soil leaching, which adversely affect the yield of plant cult p.

The aim of the invention is to improve the effect of the action of fertilizer by increasing the uptake of boron and eliminating the effect of re-liming the soil.

The delivered pellet is achieved by the fact that according to the method of obtaining containing fertilizers by a bundle of introduction of ground production waste into ground limestone to boron-containing grains, boric acid wastes from boron ores are used as boron-containing wastes; at a mass ratio of izvest ™ to waste equal to 10: (0.8-2.6

At the same time OTKH.OTSY. should contain 1.0-6.0% 1.5.9.5% MoO; 31.653, 0% of the impurity - the rest, when the water-soluble form is combined with a soo1NO1 and 1% melting point of 0.64, 2 for 0.04 - 0, 5 for SO.

When carrying out investigations, it was found that the disadvantages of this method are associated with a low mobility of boron in the fertilizer, because the main amount of boron is contained in a slowly growing soluble form. Therefore, the effectiveness of a fertilizer prepared by a known

In a new way, it begins to appear only to the second gop of use. In case of an accidental overdose of limestone in the night, the boron compounds in the meson-growing form are not able to prevent the negative effect of re-calcination, their solubility, and, consequently, the mobility during alkalinization, also decreases sharply. Studies have shown that in order to increase the mobility of boron in fertilizer and eliminate the effect of re-registration, a certain combination of water-soluble and assimilable forms of boron in the fertilizer, as well as the presence of magnesium and sulfur compounds, is necessary in it, which made it possible to choose the type and composition of boron-containing oaghod to add fertilizer to the composition,

Pu-subagents for use as a boron-containing fertilizer additive for the production of boric acid from borate ores contain the required amounts of compounds of boron, magnesium and sulfur.

The results of studying the effect of lime on boron containing waste are given in Table. 1. With a ratio of less than 10: 2.6, the yield is reduced due to the toxic effect of an excess of boron, and with a ratio of more than 10 gO, 8 plants do not receive the required amount of boron.

The effect of boron-containing fertilizer dosage per night is presented in Table. 2 The unit dosage rate per unit, lower values — underexposure (may occur if there is a shortage of fertilizers per given area), higher values — re-liming (crop yield during re-liming — dosage 1.2 does not increase, indicating a negative effect of non-leasing and increase in fertilizer consumption, which does not justify itself).

Example 1. In the process of making lime flour, waste from the production of boric acid from borate ores, containing in water-soluble form 0.5% 0.6% M and 1.6% 504 and in digestible form 0, is introduced into the grinding-drying stage. 5% 0.9% MigO and 38% 50, tipH weight ratio lime to waste equal to 10: 2.6. At the same time, the ratio of the content of the water-soluble form to the content of the digestible form in the waste is for 20 1.0, for Myan 0.6; for 50 0.04.

After drying, boro-lime fertilizer is obtained with a socialization of 0.27% VLO, O, 31% MgO and 8.2% 904. The yield increase of root crops due to the introduction of this fertilizer into the soil in an average of 4 j years of testing compared to the known method at a dosage rate of 1.0, it was 62%, and at a dosage rate of 1.2 - 93%.

The increase in yield at fertilizer dosage testifies to an increase in boron uptake with fertilizer, and the increase in increment with increasing dosage rate proves the absence of negative effects on soil redevaluation.

Example 2 Waste boric acid production from borate is introduced to the lime grinding stage. ores containing in water-soluble form. ro me 5,0% B20z; 7.5% M and 15% 50, in an assimilable form - 1, O% 2.0% M and 30% 50, while the relative content of the water-soluble form to the content of the absorbed form 25 is waste- -

for M

the ratio of limestone to boron containing waste was 1O: O, 8. Four-year trials of the obtained fertilizer showed that the average yield of root crops on peat-nogologicheskie soils in relation to a known method at a dosage rate of 1.0 was 54% and at a dosage rate of 1.2 - 86%. The increase in yield at these rates indicates an increase in the boron uptake made with fertilizer and the absence of a negative re-leverage effect.

In relation to the existing (basic) production of boron-containing superphosphates based on technical boric acid or calcium borate, the proposed method allows to expand the production of boron-containing fertilizers without creating new productions, without expanding the raw material base of boron productions, with minimal capital expenditures and at the same time eliminating toxic boron-containing waste,

water in

RK + known for Kovna flour with boric acid0,5016,754.8 that 0.7521,369,6

Table 2 19,150,935,4 27,478,149,1

GGrscholzhenie tab. 2

Claims (2)

1. METHOD FOR PRODUCING A GOD-CONTAINING FERTILIZER by introducing boron containing production waste into the ground limestone, characterized in that, in order to increase the efficiency of fertilizer by increasing the digestibility of boron and eliminating the effect of re-reporting of soils, boron acid waste from borate is used as boron waste. ores with a mass ratio of limestone to waste equal to 10: (0.8-2.6). 2. The method according to π. 1, characterized in that the waste contains 1.0-6.0% B ^ O ₃ j 1.5-9.5% M ^ Oj 31.653.0% 91 ^; impurities - the rest when the ratio of the water-soluble form to the digestible form is 1-5 for E ^ O ^ j § 0.6-4.2 for M ^ O and 0.04-J, 5 for 50 ^.