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Method for producing round granular potash fertilizer

A technology of round granules and potash fertilizers, which is applied in the direction of phosphate fertilizers, fertilization devices, fertilizer mixtures, etc., can solve the problems that round granule fertilizers cannot be mass-produced, the dust is too large to fertilize, and the absorption by crops is slow, so as to facilitate large-scale fertilization, Good for absorption and convenient fertilization

Pending Publication Date: 2021-07-13
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adding some viscous phosphate and powdered potassium fertilizer for mixed granulation, on the one hand, it solves the difficulty that round granular fertilizers cannot be produced in large quantities, and on the other hand, it solves the problem that farmers have too much dust to fertilize, and it is absorbed by crops. slow problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Put monoammonium phosphate and potassium sulfate into two feed bins respectively and put in the materials by controlling the metering scale, and put the materials into the ball mill with monoammonium phosphate and potassium sulfate in a ratio of 0.9:9.1 for mixing and grinding for 30 minutes;

[0025] (2) The mixed material is conveyed in the granulation drum through the belt, and the mass concentration is that 0.5% phosphoric acid solution is atomized and sprayed to the fertilizer surface by the atomizing nozzle to make potassium sulfate form particles by 0.5% phosphoric acid solution;

[0026] (3) Send the granulated potassium sulfate into the drying drum for drying, and then sieve and pack the fertilizer after drying.

[0027] size ≤1mm 1mm-2mm 2mm-3mm 3mm-4mm ≥4mm % 1.2 22.2 26.4 48.4 1.8

Embodiment 2

[0029] (1) Put the heavy superphosphate and potassium chloride into two silos respectively, and put the materials into the ball mill by controlling the metering scale, and put the materials into the ball mill with the ratio of heavy superphosphate and potassium chloride at a ratio of 0.9:9.1. Material grinding for 30min;

[0030] (2) The mixed material is conveyed in the granulation drum through the belt, and the mass concentration is 0.5% phosphoric acid solution, and the 0.5% phosphoric acid solution is atomized and sprayed to the surface of the fertilizer through the atomizing nozzle to form potassium chloride into particles;

[0031] (3) Send the granulated potassium chloride into the drying drum for drying, and then sieve and pack the fertilizer after drying.

[0032] size ≤1mm 1mm-2mm 2mm-3mm 3mm-4mm ≥4mm % 2.1 32 33.2 30.9 1.8

Embodiment 3

[0034] (1) Put the monoammonium phosphate and potassium chloride into two feed bins respectively, and put the materials into the ball mill with the ratio of 1.5:8.5 of monoammonium phosphate and potassium chloride by controlling the metering scale for mixing and grinding 30min;

[0035] (2) The mixed material is conveyed in the granulation drum through the belt, and the mass concentration is that 0.5% sulfuric acid solution is atomized and sprayed to the surface of the fertilizer by the atomizing nozzle to make potassium chloride form particles by 0.5% sulfuric acid solution;

[0036] (3) Send the granulated potassium chloride into the drying drum for drying, and then sieve and pack the fertilizer after drying.

[0037] size ≤1mm 1mm-2mm 2mm-3mm 3mm-4mm ≥4mm % 2.7 29.4 29.6 35.1 3.2

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PUM

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Abstract

The invention relates to a method for producing a round granular potash fertilizer, wherein the method is characterized by comprising the following steps: (1) putting different materials into different bins, putting the materials into a mixer according to the ratio of a component A to potash fertilizer powder of (0.1-5):(5-9.9), and mixing for 20-40 minutes, wherein the component A is phosphate with certain viscosity; (2) conveying the mixed equipment into a granulation roller or a disc through a belt or an auger, and adding a granulation auxiliary agent for granulation; and (3) drying, screening and packaging after the granulation stage, wherein the component A is phosphate with certain viscosity. The method provided by the invention can greatly improve large-scale production of the potash fertilizer, has high yield and large particle strength, and can supplement phosphorus element in the potash fertilizer.

Description

technical field [0001] The invention relates to a method for producing granular fertilizers, in particular to a method for producing round granular potash fertilizers, and belongs to the field of fertilizer manufacturing. Background technique [0002] For the future development of fertilizers, round granule fertilizer is an inevitable trend. Round granule fertilizer can be applied to the coating to make slow-release fertilizer, and it is also suitable for large-scale fertilization. However, the production of round granules is very sandy in nature. Difficult thing, the present invention has been solved at this problem, can well help sand type potash fertilizer to become granule by adding inorganic phosphate, [0003] Improve production yield, but also supplement phosphorus for potash fertilizer. [0004] 1. Patent CN109455962A describes a method for the preparation and application of a neutral phosphate composite binder. It is mainly a binder developed for metal materials. I...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05G5/12
CPCC05B7/00C05G5/12C05B1/04
Inventor 王仁宗王兴
Owner HUBEI FORBON TECH
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