SU378382A1 - METHOD OF OBTAINING COMPLEX BIOMINERAL FERTILIZER - Google Patents

Description

It is known to obtain biomineral fertilizer from keratin-containing raw material by treating it with alkali, followed by neutralization with acid.

The proposed procedure differs from the known t & m that keratim-containing raw materials (horns, hooves, bristles, hair, wool, etc.) are treated with potassium hydroxide under excess pressure of 2-5 kg / cm and then neutralized with concentrated phosphoric acid. . In this case, a 13% hydroxide solution is used. It is calculated on the basis of the consumption of 1 part of hydroxide “ali” for 3 parts of raw material, and the co-centric acid is taken from the calculation of 12–20% by weight of the raw material for neutralization.

The resulting biomineral fertilizer with a high content of nitrogen in the form of amilic acids, and that | Khoze phospho. R-potassium salts and microelements exerts the st; Immunizing effect on the growth of vegetable and grain crops.

Example. 100 kg of horn-and-hoofed raw materials, 39 kg of potassium hydroxide are placed in an enamelled autoclave and 260 liters of water are poured over three 20 ° C. After loading the autoclave, the autoclave is closed and steam is fed into it through a barbater to create a pressure of 4 kg / cm. At this pressure, the disulfide bonds of the protein are DECREASED for 3 hours. The gases formed in the course of the reaction are sludge t from the autoclave | Ba after 1.5 hours (via a condenser).

At the end of the bleaching process, the steam supply is stopped and the pressure in the autoclave is equalized with the atmospheric pressure. Then, the resulting mass, having a pH of 11, is cooled to 50 ° C by supplying water with a temperature of 20 ° C to the jacket of the autoclave, after which the solution is neutralized to pH 7

by giving; and when moving the solution of the concentrated phosphoric acid in the amount of 12 kg.

As a result, 400 kg of biomineral fertilizer are obtained with a moisture content of 70-75%, mineral salts (mainly phosphorus-potassium) 6-6.2% and nitrogen 2.1-2.5%.

Subject invention

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1. A method for producing a complex bio-mineral fertilizer from keratin-containing raw materials, including treating the latter with alkali and subsequent "neutralizing", characterized in that, in order to obtain a product with a higher nitrogen content in an easily assimilable plant form and rich in phosphorous-potassium salts , the raw material is treated with hydroxide / potassium under an overpressure of 2-5 kg1 cm, and then neutralized with concentrated phosphoric acid. 2. The method according to claim 1, characterized in that the feedstock is treated with a 13% potassium hydroamide solution at the rate of 1 part of hydrochloric acid, and for 3 parts of raw material, and the concentrated phosphoric acid for neutralization is taken at the rate of 12- 20% to. Weight of raw materials.