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Water-solubility instant potassium sulfate fertilizer

An instant potassium sulfate, water-soluble technology, applied in potash fertilizers, inorganic fertilizers, fertilizer mixtures, etc., can solve the problems of slow dissolution rate, high content of water-insoluble substances, corrosion, etc., to avoid clogging drippers and nozzles, and avoid pipeline knots Scale and corrosion, the effect of increasing the dissolution rate

Active Publication Date: 2014-07-02
SDIC XINJIANG LUOBUPO POTASH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no water-soluble fertilizer with potassium sulfate as the single main nutrient in the market
The reasons why agricultural potassium sulfate is difficult to be used as a water-soluble fertilizer are as follows: first, the content of water-insoluble substances is high; second, the dissolution rate is slow; third, in the case of hard water, pipeline scaling and corrosion are prone to occur
These defects have restricted the application of potassium sulfate in water-soluble fertilizers

Method used

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  • Water-solubility instant potassium sulfate fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) if figure 1 As shown, according to the liquid-solid ratio of 4.5:1, put the agricultural potassium sulfate and tap water into the dissolution tank, and heat-dissolve at 80°C for 10 minutes;

[0030] (2) The centrifuge separates the water-insoluble matter, the solution enters the crystallizer for forced cooling and crystallization, the crystallization end point temperature is 20°C, the solid-liquid separation obtains crystalline potassium sulfate, the particle size is less than 0.3mm, accounting for 88.64%, and the crystallization mother liquor returns to the step ( 1) Recycled as a solvent;

[0031] (3) According to the weight ratio of 95% crystalline potassium sulfate, 1% component A, 4% component B and 0% component C, feed in a double-helix conical mixer for mechanical mixing;

[0032] (4) After mixing, it enters the drying process and is packaged as an instant potassium sulfate product, K 2 The O content is 51.3%, and the water-insoluble content is 0.018%.

Embodiment 2

[0034] (1) if figure 1 As shown, according to the liquid-solid ratio of 11.8:1, the agricultural potassium sulfate and the crystallization mother liquor are metered into the dissolution tank, and thermally dissolved at 85°C for 15 minutes;

[0035] (2) The centrifuge separates the water-insoluble matter, the solution enters the crystallizer for forced cooling and crystallization, the crystallization end point temperature is 25°C, the solid-liquid separation obtains crystalline potassium sulfate, the particle size is less than 0.3mm, accounting for 85.73%, and the crystallization mother liquor returns to the step ( 1) Recycled as a solvent;

[0036] (3) According to the weight ratio of 95.5% crystalline potassium sulfate, 0.5% component A, 3% component B and 1% component C, feed in a horizontal ribbon mixer for mechanical mixing;

[0037] (4) After mixing, it enters the drying process and is packaged as an instant potassium sulfate product, K 2 The O content is 51.5%, and the...

Embodiment 3

[0039] (1) if figure 1 As shown, according to the liquid-solid ratio of 10.8:1, the agricultural potassium sulfate and the dissolving agent (a mixture of tap water and crystallization mother liquor) are metered into the dissolving tank, and thermally dissolved at 95°C for 20 minutes;

[0040] (2) The centrifuge separates the water-insoluble matter, the solution enters the crystallizer for forced cooling and crystallization, the crystallization end point temperature is 30°C, solid-liquid separation obtains crystalline potassium sulfate, the particle size is less than 0.3mm, accounting for 78.54%, and the crystallization mother liquor returns to the step ( 1) Recycled as a solvent;

[0041] (3) According to the weight ratio of 96.0% crystalline potassium sulfate, 1.5% component A, 2% component B and 0.5% component C, feed in a horizontal ribbon mixer for mechanical mixing;

[0042] (4) After mixing, it enters the drying process and is packaged as an instant potassium sulfate pr...

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Abstract

The invention provides a water-solubility instant potassium sulfate fertilizer and belongs to the technical field of an agricultural fertilizer. Agricultural potassium sulfate is purified by adopting a recrystallization process of 'heat dissolution and cold crystallization', and insoluble matter is removed out of water, so as to obtain high-purity crystal potassium sulfate; 0.1-3% of component A, 0.5-5% of component B and 0-1% of component C are added; the component A is a dispersant and water softener; the component B is an acid providing agent; and the component C is a wetting agent. The instant potassium sulfate fertilizer is packaged in mechanical mixing and drying manners. By adopting the method provided by the invention, the content of the insoluble matter can be effectively reduced, the dissolution degree is quickly improved, and the water-solubility instant potassium sulfate fertilizer is simple in technological process and has strong practical value. The product disclosed by the invention can be widely applied to agricultural facilities integrated with foliage spraying, trickle irrigation, sprinkling irrigation and the like.

Description

technical field [0001] The invention relates to an agricultural water-soluble fertilizer and a preparation method thereof, in particular to a water-soluble instant potassium sulfate fertilizer with fast dissolution and high water solubility. Background technique [0002] Water-soluble fertilizers can be quickly dissolved in water, more easily absorbed by crops, and have a higher absorption and utilization rate. More importantly, it can be applied to facility agriculture such as sprinkler irrigation and drip irrigation to realize the integration of water and fertilizer, and achieve the efficiency of saving water, fertilizer, labor and increasing production. According to the National Agricultural Technology Extension Service Center of the Ministry of Agriculture, my country's existing orchards, corn, potatoes, sugarcane and other planting areas have reached more than 900 million mu, but the current application ratio of water and fertilizer integration is only about 3.2%, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05D1/02
Inventor 谭秀民李守江雷光元张秀峰伊跃军董广峰
Owner SDIC XINJIANG LUOBUPO POTASH CO LTD
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