CN112919933A - Method for preparing organic potassium sulfate round granular fertilizer - Google Patents

Abstract

The embodiment of the invention discloses a method for manufacturing a round granular potassium organosulfate fertilizer, which is obtained by the following method, wherein in the first step, the powdery potassium fertilizer is prepared to have the fineness of more than 60 meshes, in the second step, the prepared organic material has the fineness of 60 meshes, in the third step, most importantly, a high-strength organic adhesive is prepared and then is simultaneously mixed with potassium sulfate and organic materials, the 3 materials are simultaneously poured into a mixer for mixing, atomized water is added while mixing, and the spraying amount of the sprayed atomized water is 3 percent of the weight of the former raw materials, because the raw materials can generate dust while mixing, and the sprayed water is used for preventing the raw materials from flying upwards so as to protect the environment. And fourthly, putting the stirred materials into a disc megaparticle machine, drying and screening to obtain the round granular organic potassium sulfate fertilizer, wherein the potassium oxide content of the extracted organic potassium sulfate granular fertilizer is less than or equal to 45 percent, the organic matter content of the fertilizer is 13 percent, and the fertilizer can meet the standard qualified product of 2GBT20406-2017 agricultural potassium sulfate.

Description

Method for preparing organic potassium sulfate round granular fertilizer

Technical Field

The invention relates to the field of round granular fertilizers, in particular to a method for manufacturing a round granular fertilizer containing potassium sulfate.

Background

The potassium sulfate is a fertilizer obtained by processing a potassium salt ore naturally formed from white powder, the potassium oxide content in the potassium sulfate fertilizer is 50-52%, the appearance of potassium chloride is mostly white powder, and the potassium oxide content in the potassium chloride is 54-62%.

At present, the two potash fertilizers are powdery, are inconvenient to fertilize, are particularly influenced by weather, cannot fertilize and seed in windy weather, delay the planting season when fertilization is stopped after wind, and cannot meet the requirement of mechanized fertilization of modern agriculture.

The manufacturing method of the granular potash fertilizer currently has several methods: the first extrusion method is that the powdery potash fertilizer is extruded into a sheet shape by a double-roller extruder, and then the sheet shape is crushed and screened to obtain a finished particle product, the particles produced by the method are irregular, have edges and corners and poor flowing property, can block a seeder in the process of mechanical fertilization, are not uniformly mixed and are easy to layer when used as a mixed fertilizer, and have much dust after friction in the process of transportation, so the polyhedral particles produced by the method are not ideal. The rolling agglomeration method needs to add bentonite or attapulgite as a binder for production, and the added amount accounts for 20-30% of the total raw materials, so that the whole nutrient ratio content is reduced, the nutrients and the quality of the fertilizer are affected, and the fertilizer cannot reach the national standard.

Disclosure of Invention

The invention provides a method for manufacturing a round granular fertilizer containing potassium organosulfate, which overcomes the defects of the prior art and can effectively overcome the defects of irregular granules, edge and piece angles, poor flowing property, more dust after friction, low total nutrient of fertilizer efficiency and no organic components in the fertilizer in the prior granular potassium fertilizer production.

The manufacturing method of the potassium organosulfurate round granular fertilizer comprises the following steps:

(1) preparing 900 kilograms of powdery potassium sulfate with the fineness of more than 60 meshes, preparing organic raw materials with the fineness of more than 60 meshes, and preparing organic adhesive with the fineness of more than 300 meshes;

(2) the three are combined into atomized water which is poured into a stirrer together and added simultaneously;

(3) moving the uniformly stirred materials to a million-grain tray for million grains, and spraying water or gas;

(4) conveying the round potassium granules from the disc to a dryer for air flow drying;

(5) sending the dried product to a cooling furnace for cooling to below 30 ℃;

(6) and screening the cooled potassium fertilizer particles.

Preferably, in the step 1, 900 kilograms of powdery potassium sulfate with 52 percent of potassium oxide content with the fineness of over 60 meshes is prepared, 130 kilograms of organic material with 98 percent of organic content with the fineness of over 60 meshes is prepared, and 8 to 12 kilograms of organic adhesive with the fineness of over 300 meshes is prepared.

Preparing 866 kg of powdery potassium sulfate with the potassium oxide content of 52 percent, wherein the fineness is more than 60 meshes; 124 kg of organic materials with the organic content of 98 percent and the fineness of more than 60 meshes are prepared; the self-made organic adhesive is prepared, 10 kg of the organic adhesive has the organic content of 97 percent and the fineness of more than 300 meshes.

In the step 2, the three components are 1000 kg together and poured into a stirrer, and 3% of atomized water is added while stirring.

And in the step 4, the round potassium particles in the disk are sent to a dryer for 180-degree air flow drying.

The embodiment of the invention has the following beneficial effects:

the invention discloses a method for preparing round granular potassium organosulfate fertilizer, which comprises the following steps of preparing powdery potassium fertilizer with fineness of more than 60 meshes, preparing organic material with fineness of 60 meshes, mixing the prepared organic material with potassium sulfate and organic material, stirring the 3 materials in a stirrer, adding atomized water while stirring, and spraying the atomized water with a quantity of 3% of the weight of the former material. And fourthly, putting the stirred materials into a disc megaparticle machine, drying and screening to obtain the round granular organic potassium sulfate fertilizer, wherein the potassium oxide content of the extracted organic potassium sulfate granular fertilizer is less than or equal to 45 percent, the organic matter content of the fertilizer is 13 percent, and the fertilizer can meet the standard qualified product of 2GBT20406-2017 agricultural potassium sulfate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.

The method for preparing the round granular organic potassium sulfate fertilizer meets the requirement of 2-GBT20406-2017 potassium sulfate for agricultural use, and the qualified product of the organic agricultural sulfuric acid with the organic granular potassium oxide content of 45 percent is produced and prepared. The detailed example is as follows:

866 kg of powdery potassium sulfate with the potassium oxide content of 52 percent is prepared, and the fineness is more than 60 meshes.

124 kg of organic materials with the organic content of 98 percent and the fineness of more than 60 meshes are prepared.

The self-made organic adhesive is prepared, 10 kg of the organic adhesive has the organic content of 97 percent and the fineness of more than 300 meshes.

The three components are combined together, 1000 kg of the mixture is poured into a stirrer, and 3 percent of atomized water is added while stirring.

And moving the uniformly stirred material to a million-grain tray for million grains. Water or air jets.

The round potassium particles from the tray are sent to a dryer for 180-degree air flow drying.

And (4) sending the dried product to a cooling furnace for cooling to below 30 ℃.

And screening the cooled potassium fertilizer particles, and checking 1-4.75 finished products.

And (3) inspecting the particles of 1 to 75 and 3.5 to 5.6, and then packaging and warehousing.

The potassium oxide content of the organic potassium sulfate granular fertilizer is less than or equal to 45 percent, the organic matter content is 13 percent, and the organic potassium sulfate granular fertilizer can meet the standard qualified product of 2GBT20406-2017 potassium sulfate for agricultural use.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (5)

1. A method for preparing a round granular fertilizer containing potassium organosulfate is characterized in that: the method comprises the following steps:

(1) preparing 900 kilograms of powdery potassium sulfate with the fineness of more than 60 meshes, preparing organic raw materials with the fineness of more than 60 meshes, and preparing organic adhesive with the fineness of more than 300 meshes;

(2) the three are combined into atomized water which is poured into a stirrer together and added simultaneously;

(3) moving the uniformly stirred materials to a million-grain tray for million grains, and spraying water or gas;

(4) conveying the round potassium granules from the disc to a dryer for air flow drying;

(5) sending the dried product to a cooling furnace for cooling to below 30 ℃;

(6) and screening the cooled potassium fertilizer particles.

2. The method for preparing potassium organosulfate pellet fertilizer as claimed in claim 1, wherein the granular fertilizer is prepared by mixing the granular fertilizer with potassium organosulfate,

in the step 1, 800-900 kg of powdery potassium sulfate with the potassium oxide content of 52 percent is prepared, the fineness is more than 60 meshes, 130 kg of organic material with the organic content of 98 percent is prepared, the fineness is more than 60 meshes, 8-12 kg of organic adhesive is prepared, and the fineness is more than 300 meshes.

3. The method for preparing the round granular fertilizer containing potassium organosulfate as claimed in claim 2, wherein 866 kg of potassium sulfate powder containing 52% potassium oxide is prepared, and the fineness is above 60 meshes; 124 kg of organic materials with the organic content of 98 percent and the fineness of more than 60 meshes are prepared; the self-made organic adhesive is prepared, 10 kg of the organic adhesive has the organic content of 97 percent and the fineness of more than 300 meshes.

4. The method for preparing potassium organosulfate pellet fertilizer as claimed in claim 1, wherein in step 2, the three components are mixed together to make 1000 kg, and the mixture is poured into a mixer and 3% atomized water is added while stirring.

5. The method for preparing potassium organosulfate pellet fertilizer as claimed in claim 1, wherein the granular fertilizer is prepared by mixing the granular fertilizer with potassium organosulfate,

and in the step 4, the round potassium particles in the disk are sent to a dryer for 180-degree air flow drying.