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Method for preparing high-tower nitro type seaweed composite fertilizer

A technology of high nitro tower and compound fertilizer, applied in ammonium nitrate fertilizer, nitrogen fertilizer, potash fertilizer and other directions, can solve the problem of easy carbonization of seaweed polysaccharide, achieve high seaweed active substances, improve high temperature resistance, protect flowers and fruits and resist stress effect of effect

Pending Publication Date: 2019-11-01
HUBEI NEWYANGFENG FERTILIZER STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, seaweed polysaccharides are added to nitro high-tower compound fertilizers as a synergistic raw material in the industry. Because the production process of nitro-high-tower compound fertilizers is relatively high temperature, seaweed polysaccharides are easy to carbonize. Therefore, a nitro-high-tower seaweed has been developed. Compound fertilizer is very necessary

Method used

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  • Method for preparing high-tower nitro type seaweed composite fertilizer
  • Method for preparing high-tower nitro type seaweed composite fertilizer
  • Method for preparing high-tower nitro type seaweed composite fertilizer

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preparation example Construction

[0024] A preparation method of nitro high tower seaweed compound fertilizer, comprising the following steps:

[0025] S1, chop the dried seaweed into small sections with a length of 0.5-1cm, and finely sieve to remove sand for later use;

[0026] S2, put water into the digestion tank and stir, add potassium carbonate and stir until it is completely dissolved to obtain potassium carbonate solution, control the concentration of potassium carbonate solution at 0.2-0.5mol / L, then add the small section of dry seaweed obtained in S1 to degrade, small section The mass ratio of dried seaweed and potassium carbonate aqueous solution is 1:8-1:12;

[0027] S3. Close the digestion tank and heat up until the temperature in the tank reaches 120-140°C and the pressure reaches 0.3-0.4Mpa, then digest and degrade for 3-5h to obtain the mixed solution; take out part of the mixed solution to measure its viscosity, when the viscosity is 30°C When the temperature is 3-4.5Mpa / second, turn on the c...

Embodiment 1

[0035] 1) Preparation of seaweed extract

[0036] Put 500kg of water in a 1-ton digestion tank, slowly add 45kg of potassium carbonate, stir and dissolve completely, then add 55kg of chopped Ascophyllum nodosum. Close the digestion tank, open the jacket steam to heat up, the temperature is 130°C, after 4 hours of digestion and degradation, turn on the cooling water to cool down, the temperature drops to 95°C, open the air pressure valve, turn on the cooling water to cool down to 60°C, and pass through a horizontal centrifuge 4000r / After centrifugation for 1 min, the centrifugate was obtained, and phosphoric acid was added to the centrifugate to adjust the pH to 9.5. In the centrifugal liquid, add potassium humate with a solid content of 15% in the centrifugal liquid itself, and stir for 1.8 hours. When the centrifugal liquid is concentrated to a solid content of 35%, it will be the seaweed extract after spray drying, and the water content of the seaweed extract is 2%.

[00...

Embodiment 2

[0059] 1) Preparation of seaweed extract

[0060] Put 500kg of water in a 1 ton digestion tank, slowly add 40kg of potassium carbonate, stir and dissolve completely, then add 67kg of pulverized macroalgae. Close the digestion tank, open the jacket steam to heat up the temperature, the temperature is 120°C, after 5 hours of digestion and degradation, turn on the cooling water to cool down, the temperature drops to 90°C, open the air pressure valve, turn on the cooling water to cool down to 60°C, and pass through a horizontal centrifuge 3000r / After centrifugation for 1 min, the centrifugate was obtained, and phosphoric acid was added to the centrifugate to adjust the pH to 9.0. Add potassium humate with a solid content of 12% in the centrifugal liquid, and stir for 1.5 hours. When the centrifugal liquid is concentrated to a solid content of 30%, it will be the seaweed extract after spray drying, and the water content of the seaweed extract is 3%.

[0061] 2) Preparation of ni...

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Abstract

A method for preparing a high-tower nitro type seaweed composite fertilizer is disclosed. The method includes S1) chopping dry seaweed into small segments; S2) putting water into a digestion tank, stirring, adding potassium carbonate and then degrading the small seaweed segments; S3) sealing the digestion tank for digestion and degradation to obtain a liquid mixture, and performing centrifugationwhen the temperature of the liquid mixture in the tank decreases to 60 DEG C to obtain a centrifugate; S4) adding potassium humate into the centrifugate; S5) concentrating the centrifugate; S6) spray-drying the centrifugate to obtain a seaweed extract; S7) adding monoammonium phosphate, ammonium sulfate, potassium sulfate, potassium chloride and the seaweed extract to a high-tower ammonium nitratetank containing an ammonium nitrate solution, then mixing and grinding the materials, feeding the mixture to a high-tower granulator for granulation, and then performing sieving, cooling and coatingto obtain the composite fertilizer. The composite fertilizer produced by the method has more seaweed active substances, can achieve root promoting, seedling strengthening and shoot strengthening, andhas better flower and fruit protecting and stress resistance effects.

Description

technical field [0001] The invention relates to the field of fertilizers, and relates to a preparation method of nitro high-tower seaweed compound fertilizer. Background technique [0002] In 2015, the Ministry of Agriculture formulated the "Action Plan for Zero Growth in Chemical Fertilizer Use by 2020", focusing on the main line of work of "stabilizing grain, increasing income, adjusting structure, improving quality, increasing efficiency and changing mode", vigorously promoted the reduction of chemical fertilizers and improved efficiency, and actively explored High-efficiency, product safety, resource-saving, and environment-friendly development of modern agriculture. It can be seen that quality improvement, efficiency enhancement and environmental friendliness have almost become the themes of sustainable development of planting industry. [0003] Seaweed extract is rich in sugars, trace elements, growth regulators, betaine, mannitol, sterols, and polyphenols, which can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05B7/00C05C1/00C05C3/00C05D1/02C05F11/00
Inventor 武良王雁峰郭武松房福力
Owner HUBEI NEWYANGFENG FERTILIZER STOCK
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