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The preparation method of zinc citrate ammonia

A technology of zinc citrate ammonia and citric acid, which is applied in the field of preparation of zinc citrate ammonia, can solve problems such as difficult release, limited duration of inorganic salt fertilizer effect, high chelation strength of EDTA chelate salt, etc., and achieve low raw material cost, Good compatibility and good nutrient absorption effect

Active Publication Date: 2017-05-17
HENAN RUIBEIJIA BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the duration of fertilizer effect of inorganic salts is limited, while EDTA chelate salts have high chelation strength and are difficult to release during use.

Method used

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  • The preparation method of zinc citrate ammonia

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, accurately weigh 410g of zinc oxide powder, 700g of citric acid monohydrate, 1500ml of ammonia water, and 4000ml of water;

[0027] The preparation method is:

[0028] In the first step, add 4000 ml of water to the reaction kettle, add 410g of zinc oxide powder into the water, stir to dissolve, and disperse evenly;

[0029] In the second step, add citric acid monohydrate 700g in the zinc oxide solution obtained in the first step, and continue to stir until the solution becomes transparent;

[0030] The third step is to start stirring, and slowly add 1125 ml of ammonia water to the transparent solution, and then continue to stir for 0.5h after adding the ammonia water;

[0031] The fourth step is to boil the solution obtained in the third step, concentrate to 1 / 2 of the original volume, stop heating, and naturally cool to room temperature, continue to slowly add the remaining 375ml of ammonia water, and stir for 0.5h;

[0032] In the fifth step, the solution in ...

Embodiment 2

[0034] First, accurately weigh 400g of zinc oxide powder, 680g of citric acid monohydrate, 1400ml of ammonia water, and 4000ml of water;

[0035] The preparation method is:

[0036] In the first step, add 4000 ml of water to the reaction kettle, add 400 g of zinc oxide powder into the water, stir to dissolve, and disperse evenly;

[0037] In the second step, add citric acid monohydrate 680g in the zinc oxide solution prepared in the first step, and continue to stir until the solution becomes transparent;

[0038] The third step is to start stirring, and slowly add 1050 ml of ammonia water to the transparent solution, and then continue to stir for 0.5h after adding the ammonia water;

[0039] The fourth step is to boil the solution obtained in the third step, concentrate to 1 / 2 of the original volume, stop heating, and naturally cool to room temperature, continue to slowly add the remaining 350ml of ammonia water, and stir for 0.5h;

[0040] In the fifth step, the solution in...

Embodiment 3

[0042] First, accurately weigh 440g of zinc oxide powder, 720g of citric acid monohydrate, 1400ml of ammonia water, and 4000ml of water;

[0043] The preparation method is:

[0044] In the first step, add 4000 ml of water to the reaction kettle, add 440g of zinc oxide powder into the water, stir to dissolve, and disperse evenly;

[0045] Second step, in the zinc oxide solution that the first step makes, add monohydrate citric acid 720g, continue to stir until solution becomes transparent;

[0046] The third step is to start stirring, and slowly add 1200 ml of ammonia water to the transparent solution, and then continue to stir for 0.5h after adding the ammonia water;

[0047] The fourth step is to boil the solution obtained in the third step, concentrate to 1 / 2 of the original volume, stop heating, and naturally cool to room temperature, continue to slowly add the remaining 400ml of ammonia water, and stir for 0.5h;

[0048] In the fifth step, the solution in the fourth step...

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Abstract

The invention discloses a zinc ammonium citrate preparation method. Zinc ammonium citrate is prepared by using 100 parts of raw water, 17-18 parts of citric acid, 10-11 parts of zinc oxide powder and 35-40 parts of ammonia water. The preparation method comprises the following steps: placing water and zinc oxide in a stirring device, uniformly dispersing, adding citric acid, and continuously stirring until the obtained solution is transparent; introducing 3 / 4 of 35-40 parts of ammonia water into the transparent solution, heating for boiling, concentrating, naturally cooling, and slowly adding the retaining ammonia water to obtain a transparent liquid; and placing the transparent liquid in an oven, drying to remove water, cooling the obtained solid, and crushing the cooled solid to obtain finished zinc ammonium citrate. The zinc ammonium citrate has the advantages of environmental protection, no residue, good compatibility, good nutrient absorption, low raw material cost and the like as a trace element regulator in plants, can be applied to water soluble fertilizers, foliar fertilizers, plant growth regulators and soil conditioners, and follows the new Green, Organic and Ecologic agricultural development trend.

Description

technical field [0001] The invention relates to a preparation method of zinc citrate ammonia which can be used as a plant trace element regulator. Background technique [0002] In current agricultural production, in order to pursue high and stable grain yields, chemical fertilizers are reapplied all year round, while organic fertilizers are lightly applied; heavy nitrogen and phosphorus fertilizers are lightly applied with potassium fertilizers; heavy elemental fertilizers are lightly applied. Extensive application of nitrogen and phosphorus fertilizers with low utilization rates will not only increase agricultural costs, waste resources, and pollute the environment, but also cause soil compaction, eutrophication of the cultivated layer, secondary soil salinization, nitrate accumulation, and soil acidification And so on a series of questions. The higher the degree of soil acidification, the greater the loss of calcium, magnesium, potassium, ammonium and trace elements in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07C59/265C05F11/00
CPCC05C11/00C05F11/00C07C51/412C07C59/265
Inventor 梅志恒李良玉
Owner HENAN RUIBEIJIA BIOTECHNOLOGY CO LTD
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