RESEARCH AND IMPLEMENTATION OF TECHNOLOGY FOR PRODUCING ORGAN MINERAL FERTILIZER – FERTILIZER MIXTURE

Brief information is provided on the research carried out on the production of organ mineral fertilizer mixtures of prolonged action, containing moisture-retaining and sorption substances, based on enriched and calcined vermiculite, phosphogypsum, humates and microelements, which are contained in internal overburden rocks formed during the mining and preparation of brown coals. Phosphorite, natural vermiculite, internal overburden rocks, taken in certain proportions, are mixed and subjected to heat treatment at a temperature of 850–950 ⁰C. The resulting intermediate product is cooled, mixed with brown coal and phosphogypsum, and crushed to increase its physical and chemical activation. Then a 40 % aqueous solution of K₂CO₃, ammophos or ammonium nitrate is added to the product. The resulting complex mixed fertilizer is mixed and stored. A complex mixed fertilizer (fertilizer mixture) of prolonged action “ZHAMB-70” was obtained. This fertilizer is a multi-component long-acting fertilizer containing nitrogen, phosphorus, potassium, humus, microelements and water-retaining substances, which can be used for liming acidic and saline soils. A technological scheme for obtaining the mineral fertilizer “ZHAMB-70” has been proposed. Design and estimate documentation, technical and working drawings have been developed, and construction and installation work is being carried out to create a technological line for the production of mineral complex mixed fertilizer of prolonged action “ZHAMB-70”.