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Zinc humic acid long-acting compound fertilizer and preparation method thereof

A technology of zinc humic acid and compound fertilizer, which is applied in the direction of urea compound fertilizer, ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, etc., can solve the problems such as unable to solve the target, and achieve improvement of soil fertility, stability and utilization rate effect

Inactive Publication Date: 2018-09-21
ANHUI ZHONGYUAN FERTILIZER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main raw materials that can be used for existing compound fertilizers are: urea, ammonium chloride, monoammonium phosphate, potassium chloride (potassium sulfate), fillers, liquid ammonia, sulfuric acid, etc., which cannot solve the above goals

Method used

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  • Zinc humic acid long-acting compound fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A zinc humic acid long-acting compound fertilizer, the composition of raw materials in parts by weight is as follows: urea 185-198, monoammonium phosphate 380-398, potassium chloride 255-275, potassium sulfate 70-85, ammonium sulfate 0-45, zinc humic acid Acid 10-20, potassium humate 10-18, stabilizer 0.5-1.5, filler 20-60.

[0020] The preparation method of the zinc humic acid long-acting compound fertilizer is that after metering urea, monoammonium phosphate, potassium chloride, potassium sulfate, potassium humate, stabilizer and filler, they are sent into the drum making machine by a mixing hoist. The granulator forms a material bed; concentrated sulfuric acid and gaseous ammonia react in the tubular reactor to generate ammonium sulfate mixed slurry, which is sprayed on the material bed of the drum granulator together with the heated zinc humic acid, and melted at high temperature Under the action, they are bonded to each other to form granules, and at the same time,...

Embodiment 2

[0027] As a preference of Example 1, the stabilizer is a urease inhibitor.

[0028] And, for ammonium sulfate, we have given two formulas, a zinc humic acid long-acting compound fertilizer, the composition of raw materials is as follows: urea 185-198, monoammonium phosphate 380-398, potassium chloride 255-275, sulfuric acid Potassium 70-85, zinc humic acid 10-20, potassium humate 10-18, stabilizer 0.5-1.5, filler 50-60. Ammonium sulfate is not added thereto.

[0029] There is also a zinc humic acid long-acting compound fertilizer. The raw materials are composed in parts by weight as follows: urea 185-198, monoammonium phosphate 380-398, potassium chloride 255-275, potassium sulfate 70-85, ammonium sulfate 35-45, zinc humic acid Acid 10-20, potassium humate 10-18, stabilizer 0.5-1.5, filler 20-30. Add ammonium sulfate to it.

[0030] The filler is clay.

Embodiment 3

[0032] As a preferred embodiment of Example 1, the heated zinc humic acid refers to: heating the zinc humic acid through a heating tank, the heating temperature is 60° C., and the heating time is 15 minutes.

[0033] The parameter settings in the drum granulator are: steam pressure 2-3.5kg, tubular reactor temperature 90-130°C, granulated material outlet temperature 60-65°C, granulated material granulation rate 75-90%, The pH value of the granulation material is 5.8-7.0, and the moisture content of the material at the outlet of the granulator is 2.0-3.0%.

[0034] Said introducing a certain amount of ammonia refers to: injecting 30-35% of ammonia.

[0035] The parameter settings of the dryer are: first dryer head 100-300°C, first dryer tail 50-70°C; second dryer head 170-200°C, second dryer tail 50-60°C.

[0036] In the above examples, the content of humic acid in zinc humic acid is 8%, and the content of humic acid in the product should not be less than 10kg / t; considering t...

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Abstract

The invention discloses a zinc humic acid long-acting compound fertilizer and a preparation method thereof. The fertilizer is prepared from, by weight, 185-198 parts of urea, 380-398 parts of monoammonium phosphate, 255-275 parts of potassium chloride, 70-85 parts of potassium sulfate, 0-45 parts of ammonia sulfate, 10-20 parts of zinc laurate, 10-18 parts of potassium humate, 0.5-1.5 parts of stabilizer and 20-60 parts of filling agent. By adding synergistic additives such as zinc laurate and the like, the degrading and releasing speed of the urea in soil is relieved, the migration capabilityof phosphate is improved, the untoward effect between phosphate radical and calcium, magnesium and ferrum is reduced, the rapidly available phosphorus content in the soil is increased, the utilization rate of nitrogen and phosphate is improved, the fertility of the soil is improved, the activity of urease in the soil is inhibited by a urease inhibitor, the utilization rate of the nitrogen is improved, the fertilizer has chelated zinc, complexation between the soil and the chelated zinc is conducted to improve the stability of microelement fertilizer and the utilization rate of the fertilizer,functional characteristics of the fertilizer can be improved, the nutrient absorbing of crops is improved, and the stress resistance of the crops is enhanced.

Description

technical field [0001] The invention relates to a production method of compound fertilizer, in particular to a zinc humic acid long-acting compound fertilizer and a preparation method thereof. Background technique [0002] At present, the large-scale application of chemical fertilizers not only leads to soil compaction, intensified acidification, and serious salinization, but also leads to extremely low fertilizer utilization rate, serious waste, groundwater pollution, and decline in the quality of agricultural products, which poses a serious threat to the sustainable development of agriculture. Based on this, the Ministry of Agriculture proposed the goal of zero growth in fertilizer application without crop yield reduction. [0003] The main raw materials that can be used for existing compound fertilizers are: urea, ammonium chloride, monoammonium phosphate, potassium chloride (potassium sulfate), fillers, liquid ammonia, sulfuric acid, etc., which cannot solve the above go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/00C05G3/04C05G3/80C05G3/90
CPCC05B7/00C05G3/00C05G3/80C05G3/90C05G5/12C05C3/00C05C9/00C05D1/02C05F11/02
Inventor 王琦何世杰陈庆标刘统华陈兆南
Owner ANHUI ZHONGYUAN FERTILIZER CO LTD
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