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Macroelement liquid fertilizer as well as preparation method and application thereof

A technology of liquid fertilizers and macronutrients, applied in liquid fertilizers, applications, fertilizer mixtures, etc., can solve the problems of single nutrient element formula, low nutrient content, high production cost, etc., and achieve high total nutrient content, comprehensive nutrient components, and physical and chemical properties stable effect

Pending Publication Date: 2022-07-15
LANZHOU CITY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the liquid fertilizer produced in China not only has high production cost, but also has low nutrient content and simple nutrient element formula no matter it is used as root fertilizer or foliar fertilizer. Under the development trend of "water and fertilizer integration", it can only be used as a traditional fertilizer. Fertilizer Supplement

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  • Macroelement liquid fertilizer as well as preparation method and application thereof
  • Macroelement liquid fertilizer as well as preparation method and application thereof
  • Macroelement liquid fertilizer as well as preparation method and application thereof

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preparation example Construction

[0041] The present invention also provides a preparation method of the above-mentioned large-element liquid fertilizer, comprising the following steps:

[0042] Mix ammonium nitrate solution, nitrogen fertilizer, potash fertilizer, phosphate fertilizer and accelerator, and stir at 20~40℃ for 20~30min to obtain primary mixed solution;

[0043] Mixing the primary mixed solution, polymer dispersant and thickener, and stirring for 40-50 min to obtain primary liquid fertilizer;

[0044] The primary liquid fertilizer and the antifreeze are mixed to obtain the macroelement liquid fertilizer.

[0045] In the present invention, ammonium nitrate solution, nitrogen fertilizer, potash fertilizer, phosphate fertilizer and accelerator are mixed and stirred at 20-40 DEG C for 20-30 minutes to obtain a primary mixed solution. In the present invention, the ammonium nitrate solution preferably further includes pretreatment before being mixed with nitrogen fertilizer, potash fertilizer, phospha...

Embodiment 1

[0054] A liquid fertilizer with a large number of elements, consisting of the following components: 50 mL of ammonium nitrate solution, 20 g of urea, 6 g of diammonium phosphate, 6 g of potassium chloride, 0.8 g of citric acid, 0.2 g of sodium salicylate, 0.45 g of sulfamic acid, 0.09 g of acrylamide, 0.15 g of sodium carboxymethyl cellulose, 0.35 g of xanthan gum and 2 mL of methanol; the mass concentration of ammonium nitrate in the ammonium nitrate solution is 15%.

[0055] The preparation method of described macroelement liquid fertilizer consists of the following steps:

[0056] S1. put ammonium nitrate solution into the stirring mixer, control the mixing temperature to 30°C, the stirring speed to be 70 rev / min, and the stirring time to be 5min;

[0057] S2. slowly add urea, diammonium phosphate, potassium chloride, citric acid, sodium salicylate, sulfamic acid to the ammonium nitrate solution, and stir for 25min while adding, keeping stirring speed at 70 rev / min;

[005...

Embodiment 2

[0062] A liquid fertilizer with a large number of elements, consisting of the following components: 50mL of ammonium nitrate solution, 12g of urea, 6g of diammonium phosphate, 6g of potassium chloride, 0.4g of citric acid, 0.5g of sodium salicylate, 0.6g of sulfamic acid, 0.08 g of acrylamide, 0.1 g of sodium carboxymethyl cellulose, 0.35 g of xanthan gum and 3 mL of methanol; the mass concentration of ammonium nitrate in the ammonium nitrate solution is 15%.

[0063] The preparation method of described macroelement liquid fertilizer consists of the following steps:

[0064] S1. put ammonium nitrate solution into the stirring mixer, control the mixing temperature to 30°C, the stirring speed to be 70 rev / min, and the stirring time to be 7min;

[0065] S2. slowly add urea, diammonium phosphate, potassium chloride, citric acid, sodium salicylate, sulfamic acid to the ammonium nitrate solution, and stir for 25min while adding, keeping stirring speed at 70 rev / min;

[0066] S3. Ad...

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Abstract

The invention relates to the field of fertilizers, in particular to a macroelement liquid fertilizer as well as a preparation method and application thereof. Comprising the following components in parts by weight: 50-70 parts of an ammonium nitrate solution, 10-28 parts of a nitrogen fertilizer, 6-18 parts of a phosphorus fertilizer, 6-20 parts of a potassium fertilizer, 0.8-1.5 parts of a dissolution promoter, 0.05-0.1 part of a polymer dispersant, 0.2-1.0 part of a thickening agent and 1-3 parts of an anti-freezing agent. The liquid fertilizer provided by the invention takes the ammonium nitrate solution prepared from the waste liquid in the nitric acid production process as a solvent, and is compounded with proper nitrogen fertilizer, phosphate fertilizer, potash fertilizer, dissolution promoter, polymer dispersant, thickener and antifreeze agent, so that the problems of cost increase and environmental pollution caused by waste liquid treatment and discharge in the nitric acid production process can be effectively solved; moreover, the liquid fertilizer is comprehensive in nutritional ingredients, relatively high in total nutrient content and stable in physical and chemical properties, and liquid fertilizer series products with different nitrogen, phosphorus and potassium proportions can be customized.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a large-element liquid fertilizer and a preparation method and application thereof. Background technique [0002] my country is a superpower in the production and consumption of chemical fertilizers in the world, but in the production and application of chemical fertilizers, the proportion of liquid fertilizers is quite small, and most of them are solid fertilizers. [0003] International fertilizer consumption is developing in the direction of high concentration, compounding, liquefaction and slow-acting. With the progress of agricultural science and technology and the gradual adjustment of the structure of agricultural products, my country's crop planting forms and fertilization methods have begun to diversify. Past experience fertilization and conventional solid fertilization will gradually be balanced fertilization, liquid and solid fertilization. Replaced by fertilizatio...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G5/20
CPCC05G3/00C05G5/20C05B7/00C05C1/00C05C9/00C05D1/02C05F11/10
Inventor 李涛周娜霍云莉李建成秦永军
Owner LANZHOU CITY UNIV
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