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Preparation method of water-soluble silicon-potassium fertilizer

A silicon-potassium fertilizer, water-soluble technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of low fertilizer efficiency, low silicon fertilizer yield, low solubility, etc., and achieve the effect of improving soil and permanent soil

Inactive Publication Date: 2013-09-04
隋朋昌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicon fertilizer produced from these raw materials is a single silicon fertilizer, and its solubility is not high, and its fertilizer efficiency is relatively low.
In view of the shortage of soluble potassium mineral resources that can be directly used to produce potassium fertilizers in the field of fertilizer production technology, the demand for potassium fertilizers is large and the soil in a large area needs to be supplemented with silicon fertilizers, but the current output of silicon fertilizers is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Crush 200g of potassium feldspar and 40g of silica into ore powder, pass through a 125-mesh sieve for later use, add 100g of ammonium bicarbonate into the reaction kettle, add 200g of water at the same time for stirring, and add 0.4g of ferrous chloride at the same time. Under the temperature, the pressure was 5 atmospheres and reacted for 2h.

[0039]Add an appropriate amount of KOH to the above solution, stir at room temperature for 1 hour, and stop stirring until the pH value is 6 to obtain a water-soluble silicon-potassium fertilizer.

[0040] The finished product can also be obtained by concentrating the water-soluble silicon potassium fertilizer solution, drying and granulating.

[0041] The potassium extraction rate of extracting water-soluble potassium from potassium feldspar through the present embodiment 1 is 90.3%.

[0042] The silicon yield of extracting water-soluble silicon from silica through the present embodiment 1 is 31.2%.

Embodiment 2

[0044] Crush 200g of potassium feldspar and 100g of silica into ore powder, pass through a 4-mesh sieve for later use, add 200g of ammonium bicarbonate into the reaction kettle, add 500g of water for stirring, and add 0.1g of ferrous chloride at the same time, at a temperature of 750°C Under the temperature, the pressure is 20 atmospheres and react for 5h.

[0045] Add an appropriate amount of KOH to the above solution, stir at room temperature for 3 hours, stop stirring until the pH value is 7 to obtain a water-soluble silicon potassium fertilizer, concentrate, dry and granulate to obtain a finished product.

[0046] The potassium extraction rate of extracting water-soluble potassium from potassium feldspar through the present embodiment 2 is 91.5%.

[0047] The silicon yield of extracting water-soluble silicon from silica through Example 2 is 33.9%.

Embodiment 3

[0049] Crush 200g of potassium feldspar and 60g of silica into ore powder, pass through a 50-mesh sieve for later use, add 1000g of ammonium bicarbonate into the reaction kettle, add 1000g of water at the same time to stir, and add 0.2g of ferrous chloride at the same time, and keep the temperature at 400°C Under the temperature, the pressure was 10 atmospheres and reacted for 3h.

[0050] Add an appropriate amount of KOH to the above solution, stir at room temperature for 2 hours, stop stirring until the pH value is 6.5 to obtain a water-soluble silicon potassium fertilizer, concentrate, dry and granulate to obtain a finished product.

[0051] The potassium extraction rate of extracting water-soluble potassium from potassium feldspar through the present embodiment 3 is 91.2%.

[0052] The silicon yield of extracting water-soluble silicon from silica through Example 3 is 32.8%.

[0053] The following is the use effect of the fertilizer of the present invention, and the compar...

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Abstract

The invention aims at providing a preparation method of a water-soluble silicon-potassium fertilizer which takes rich reserves of potassium feldspar and silica as materials and has high fertilizer use ratio through converting contained insoluble potassium and silicon components to water-soluble components so as to slowly release in soil. According to the preparation method, the technical scheme for solving the technical problem is that a method for preparing the silicon-potassium fertilizer comprises the following steps of: step one, mixing with ammonium hydrogen carbonate after crushing potassium feldspar ore and silica mining, putting the mixture in water to stir, processing for 2-5 hours under certain reaction temperature and pressure in the presence of a catalyst; and step two, adding proper amount of KOH in the solution, stirring for 1-3 hours at normal temperature, stopping stirring until the pH value is 6-7 to obtain the water-soluble silicon-potassium fertilizer, concentrating or drying to granulate.

Description

field of invention [0001] The invention relates to a preparation method of water-soluble silicon-potassium fertilizer, which belongs to the category of agricultural chemistry. Background technique [0002] In most areas of our country, the phenomenon of potassium deficiency in soil has become the main restrictive factor of crop yield increase. According to the national soil census data, about 70% of the cultivated land in my country is deficient in potassium, and 45% of the cultivated land is seriously deficient in potassium. As the main raw material for the production of potash fertilizers, soluble potash resources have very few reserves in my country and are extremely unevenly distributed. At present, the production capacity of domestic potash fertilizer is far from meeting the demand, so the vast majority of domestic potash fertilizer depends on imports. [0003] my country's soluble potash reserves are very small, accounting for only 0.66% of the world's reserves. How...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05D11/00
Inventor 隋朋昌沈太京
Owner 隋朋昌