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Method for preparing multielement chelate fertilizer by use of threonine mother liquor

The technology of threonine mother liquor and threonine mother is applied in the field of preparing multi-chelate fertilizer, which can solve the problems of low utilization rate, high preparation cost of multi-chelate fertilizer, environmental pollution and the like, and achieves low investment and chemical stability. Sex-enhancing, accessible effects

Active Publication Date: 2014-09-24
李学春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing multi-element chelate fertilizer by using threonine mother liquor, in order to solve the problems of low utilization rate of threonine mother liquor, environmental pollution and high preparation cost of multi-element chelate fertilizer in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The method that utilizes threonine mother liquor of the present embodiment to prepare polychelate fertilizer comprises the following steps:

[0034] 1) Add 50kg of threonine mother liquor, 10kg of water and 5kg of chemically pure anhydrous calcium chloride solid into the reactor respectively, stir and heat to 40°C;

[0035] 2) Continue to add 18kg chemically pure anhydrous magnesium sulfate solid, 12kg chemically pure FeSO4 respectively in the reactor 4 ·7H 2 O solid, 2kg chemically pure ZnSO 4 ·7H 2 O solid and 1kg chemically pure borax;

[0036] 3) Add a small amount of solid sodium hydroxide to the reactor, and always control the pH value of the solution in the reactor between 6 and 8;

[0037] 4) Heating up to 80-85°C, stirring and reacting for 2 hours;

[0038] 5) putting the reaction mixture into a cooling pool for crystallization by cooling;

[0039] 6) drying the crystals obtained in step 5) until the moisture content is less than 5%;

[0040] 7) Grinding...

Embodiment 2

[0042] The method that utilizes threonine mother liquor of the present embodiment to prepare polychelate fertilizer comprises the following steps:

[0043] 1) Add 60kg of threonine mother liquor, 15kg of water and 8kg of chemically pure anhydrous calcium chloride solid into the reaction kettle respectively, stir and heat to 50°C;

[0044] 2) Continue to add respectively 20kg of chemically pure anhydrous magnesium sulfate solids and 16kg of chemically pure FeSO in the reactor 4 ·7H 2 O solid, 5kg chemically pure ZnSO 4 ·7H 2 O solid and 3kg chemically pure borax;

[0045] 3) Add a small amount of solid potassium hydroxide to the reactor, and always control the pH value of the solution in the reactor between 6 and 8;

[0046] 4) Heating up to 80-85°C, stirring and reacting for 2 hours;

[0047] 5) putting the reaction mixture into a cooling pool for crystallization by cooling;

[0048] 6) drying the crystals obtained in step 5) until the moisture content is less than 5%; ...

Embodiment 3

[0051] The method that utilizes threonine mother liquor of the present embodiment to prepare polychelate fertilizer comprises the following steps:

[0052] 1) Add 40kg of threonine mother liquor, 6kg of water and 2kg of chemically pure anhydrous calcium chloride solid into the reaction kettle respectively, stir and heat to 60°C;

[0053] 2) Continue to add 15kg chemically pure anhydrous magnesium sulfate solid, 5kg chemically pure FeSO4 respectively in the reactor 4 ·7H 2 O solid, 1kg chemically pure ZnSO 4 ·7H 2 O solid and 0.2kg chemically pure borax;

[0054] 3) Add an aqueous solution of sodium hydroxide dropwise to the reactor, and always control the pH value of the solution in the reactor between 6 and 8;

[0055] 4) Heating up to 80-85°C, stirring and reacting for 2 hours;

[0056] 5) putting the reaction mixture into a cooling pool for crystallization by cooling;

[0057] 6) drying the crystals obtained in step 5) until the moisture content is less than 5%;

[005...

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Abstract

The invention belongs to the technical field of the biochemical industry, discloses a method for preparing a multielement chelate fertilizer by use of a threonine mother liquor and aims at solving the problems of low utilization rate of the threonine mother liquor, environmental pollution and high preparation cost of the chelate fertilizer in the prior art. The method for preparing the multielement chelate fertilizer by use of the threonine mother liquor comprises the steps of adding water-soluble inorganic salts containing elements needed by crops to the threonine mother liquor and adding water for dissolving, keeping the pH value of the solution in the range of 6-8, carrying out a stirring reaction for 1-5 hours at 70-85 DEG C, and then cooling and crystalizing the reaction mixture, and then drying, grinding, weighing and packaging the crystals. The chelate fertilizer obtained by the method is characterized in that the antagonistic action between various elements such as zinc, magnesium, iron, calcium and boron disappears and the synergistic effect between the elements is improved after the threonine is chelated with all the elements, and therefore, the chemical stability of each element is enhanced so that fertilizer loss or invalidation is reduced, and furthermore, the utilization rate of the fertilizer is increased. The method is simple and low in investment.

Description

technical field [0001] The invention relates to the technical field of biochemical industry, in particular to a method for preparing multi-component chelate fertilizer by using threonine mother liquor. Background technique [0002] Threonine is mainly used in medicine, feed additives, food fortifiers, chemical reagents, especially the rapid growth of feed additives. Threonine is often added to the feed of immature piglets and poultry. It is the first pig feed. The second limiting amino acid and the third limiting amino acid in poultry feed. [0003] The production of threonine is mainly based on the fermentation method. To obtain pure threonine, a series of physical and chemical treatments must be performed. When the pretreated fermentation broth crystallizes at the isoelectric point, a mother liquor of threonine will be produced. Including threonine, protein, residual sugar, inorganic salts (including trace elements necessary for crops), etc., if they are directly discharg...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 李学春刘传远贾立媛郎群谭梅刘崇和
Owner 李学春
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