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Technological scheme for manufacturing rounded granular potassic fertilizer with high concentration

A process plan and technology of round particles, applied in potash fertilizers, inorganic fertilizers, fertilization devices, etc., can solve the problems of not being able to produce high-concentration round particle potash fertilizers, and achieve the effects of dense bonding, large production capacity, and simple operation process

Inactive Publication Date: 2012-05-23
SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problem of being unable to produce high-concentration round particle potassium fertilizer, the present invention provides a process scheme for manufacturing high-concentration round particle potash fertilizer. The content of potassium oxide in the present invention can reach 60%, and the production cost is low and the operation process is simple. Some compound fertilizer enterprises use the existing equipment to carry out large-scale production, which solves the disadvantage that the extrusion granulation process of granular potassium fertilizer is not suitable for mechanized fertilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0027] A process scheme for manufacturing high-concentration round-granular potash fertilizer, comprising the following steps:

[0028] a. Ingredients: strong acid and weak base salts are made of aluminum sulfate, soluble silicates are made of sodium silicate, and the raw materials are powdered potassium fertilizer raw materials, wherein the mass ratio of potassium fertilizer raw materials, sodium silicate and aluminum sulfate is 100:1.6:0.8 ; The sodium silicate and aluminum sulfate are respectively made into 20% solution for standby.

[0029] b. Granulation: Add the potash fertilizer raw materials to the disc granulator or drum granulator. During the rolling process of the material, the sodium silicate solution and aluminum sulfate solution are uniformly sprayed into the rolling potash fertilizer raw materials at the same time through different nozzles for granulation. grain.

[0030] c. Drying: the granulation is mixed and dried by the compound fertilizer drying equipment ...

specific Embodiment approach 2

[0032] A process scheme for manufacturing high-concentration round-granular potash fertilizer, comprising the following steps:

[0033] a. Ingredients: aluminum sulfate is used for strong acid and weak base salt, sodium silicate is used for soluble silicate, and the raw material is powdered potassium fertilizer raw material, wherein the mass ratio of potassium fertilizer raw material, sodium silicate and aluminum sulfate is 100:2.4:1.6 ; The sodium silicate and aluminum sulfate are respectively made into 20% solution for standby.

[0034] b. Granulation: Add the potash fertilizer raw materials to the disc granulator or drum granulator. During the rolling process of the material, the sodium silicate solution and aluminum sulfate solution are uniformly sprayed into the rolling potash fertilizer raw materials at the same time through different nozzles for granulation. grain.

[0035] c. Drying: the granulation is mixed and dried by the compound fertilizer drying equipment at 200...

specific Embodiment approach 3

[0037] A process scheme for manufacturing high-concentration round-granular potash fertilizer, comprising the following steps:

[0038] a. Ingredients: strong acid and weak base salt is made of aluminum sulfate, soluble silicate is made of sodium silicate, and the raw material is powdered potassium fertilizer raw material, wherein the mass ratio of potassium fertilizer raw material, sodium silicate and aluminum sulfate is 100:2.2:1.0 ; The sodium silicate and aluminum sulfate are respectively made into 20% solution for standby.

[0039] b. Granulation: Add the potash fertilizer raw materials to the disc granulator or drum granulator. During the rolling process of the material, the sodium silicate solution and aluminum sulfate solution are uniformly sprayed into the rolling potash fertilizer raw materials at the same time through different nozzles for granulation. grain.

[0040] c. Drying: the granulation is mixed and dried by the compound fertilizer drying equipment at 150°C...

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Abstract

The invention discloses a technological scheme for manufacturing a rounded granular potassic fertilizer with high concentration. Commercially-available powdered potassic fertilizer materials are put in a disc granulator or a rotary drum granulator; an aluminum sulfate / acidic solution with a certain concentration and a sodium silicate solution are sprayed into the disc granulator or the rotary drum granulator in proportion, wherein the aluminum sulfate / acidic solution and the sodium silicate solution serve as granulation binder; and the rounded granular potassic fertilizer product is prepared through rolling granulating, drying and screening. The content of potassium oxide can reach over 60% to the maximum. The technological scheme for manufacturing the rounded granular potassic fertilizer with high concentration has the characteristics of simple operating process, low cost, large production capacity, roundness for product granules, high strength and the like; and no three wastes are produced in production, so that the technological scheme is energy-saving and environment-friendly and has a very broad market prospect.

Description

One: technical field [0001] The invention relates to a process scheme for manufacturing granular potassium fertilizer, and particularly discloses a manufacturing scheme for a high-concentration round granular potassium fertilizer whose potassium oxide content can reach more than 60%. Two: Background technology [0002] With the continuous development of BB fertilizer and mechanized fertilization technology, the demand for high-concentration granular potassium fertilizer products is increasing. At present, the domestic market demand is between 800,000 and 1,000,000 tons, and most of them rely on imports, and most of them are crowded. Irregular flake-shaped granules produced by pressing granulation, the granules have edges and corners, which is not conducive to mechanized fertilization, and is not conducive to making BB fertilizer raw materials. Such potassium fertilizers are used as BB fertilizer raw materials, which are prone to segregation and stratification, resulting in un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05D1/00
Inventor 丁方军吴钦泉陈士更孟庆羽马学文谷端银
Owner SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
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