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Method for producing macro-element water-soluble fertilizer by utilizing potassium-containing rocks

A technology based on a large amount of elements and potassium rocks, applied in the field of water-soluble fertilizers, can solve the problems of uneven nutrients in water-soluble fertilizers, low crop absorption rate, soil compaction, etc., achieve excellent appearance, increase crop absorption rate, and reduce environmental pollution rate Effect

Inactive Publication Date: 2017-01-25
GUIZHOU YUANSHENG POTASSIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, most of the large-element water-soluble fertilizers sold on the market are compound fertilizers prepared by mixing raw materials such as potassium nitrate, potassium sulfate, and urea. Low, easy to cause soil compaction and pollute the environment

Method used

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  • Method for producing macro-element water-soluble fertilizer by utilizing potassium-containing rocks

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Experimental program
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Effect test

Embodiment 1

[0038] Crush the potassium-containing rock to 100 mesh, mix it with fluosilicic acid with a concentration of 25% by mass, and sulfuric acid with a concentration of 98% by mass according to the following mixing ratio. For 1 ton of potassium-containing rock powder, add 5 cubic meters of fluorine Silicic acid and 0.5 cubic meters of sulfuric acid were heated to 100°C in a reaction kettle for 4 hours, and the reaction solution was filtered off to obtain a solid;

[0039] The volume of solid and ammonia water is 1t: 1.2m according to the mass ratio 3 Mix the proportions, react in the dissolution tank for 1.5h, and then separate the solid and liquid to obtain the residue and filtrate, and then add 4 tons of potassium nitrate, potassium dihydrogen phosphate, EDTA chelated copper, EDTA chelated The mixture of zinc according to any mass ratio is uniformly stirred, then concentrated, crystallized and dried to obtain a water-soluble fertilizer with a large amount of elements.

Embodiment 2

[0041] The potassium-containing rock is crushed to 150 mesh, and mixed with hydrofluoric acid with a mass percentage concentration of 35% and nitric acid with a mass percentage concentration of 90% according to the following mixing ratio. For 1 ton of potassium-containing rock powder, add 2 cubic meters of hydrogen Fluoric acid and 1 cubic meter of nitric acid were heated to 80°C in a reaction kettle for 2 hours, and the reaction solution was evaporated to dryness to obtain a solid;

[0042] The solid and urea solution are 1t: 1m according to the mass ratio volume 3 Mix in proportion, react in the dissolving tank for 0.5h, and then separate the solid and liquid to obtain the residue and filtrate, then add 3 tons of potassium pyrophosphate, ammonium sulfate, boric acid, and ammonium molybdate to 1 cubic meter of filtrate according to any mass ratio After the mixture is evenly stirred, it is concentrated, crystallized and dried to obtain a water-soluble fertilizer with a large a...

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Abstract

The invention relates to the technical field of water-soluble fertilizers, and in particular relates to a method for producing a macro-element water-soluble fertilizer by utilizing potassium-containing rocks. The method comprises: after crushing the potassium-containing rocks, carrying out a mixing reaction on the crushed potassium-containing rocks, an auxiliary agent and acid; drying reaction liquid by distillation to obtain a solid; mixing and dissolving the solid and a dissolving agent; after carrying out a dissolution reaction, filtering to obtain liquid; adding an additive into the liquid and mixing; then concentrating, crystallizing and drying to enable the raw materials to interact in a reaction process. Therefore, the uniformity of nutrients is improved; the obtained macro-element water-soluble fertilizer prepared by the method has a relatively excellent appearance and a uniform condition; instant dissolving can be realized; no sediment is formed, and the absorption rate of crops is improved; the environment pollution rate is reduced, and the manufacturing cost of the macro-element water-soluble fertilizer is reduced.

Description

technical field [0001] The invention relates to the technical field of water-soluble fertilizers, in particular to a method for producing large-element water-soluble fertilizers by utilizing potassium-containing rocks. Background technique [0002] The development of water-soluble fertilizers in my country has gradually evolved from single-form foliar fertilizers to multi-fertilizer varieties such as large-scale element water-soluble fertilizers, medium-element water-soluble fertilizers, and amino acid-containing water-soluble fertilizers. Fertilizer transformation. In a large amount of water-soluble fertilizer, the content of nitrogen, phosphorus and potassium is high and the nutrients are complete. After increasing its water solubility, it can effectively promote the absorption and utilization of plants, and can make it rich in medium and trace elements, so that it can fully meet the needs of plant growth. Demand, to realize the advantages of water and fertilizer integrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05B7/00C05C3/00C05C5/02C05D1/04C05D9/00C05D9/02C05C9/00
Inventor 薛希仕邹锡洪任伟陈世毅
Owner GUIZHOU YUANSHENG POTASSIUM TECH
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