Process for preparing seaweed urea
A technology of seaweed and urea, applied in botany equipment and methods, urea compound fertilizer, biocide, etc., can solve the problems of low fertilizer utilization rate, improve absorption rate and utilization rate, improve farmland ecological environment, and promote the formation of Effect
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[0016] The present invention is a kind of preparation method of seaweed urea, and concrete preparation method is as follows:
[0017] Firstly, the concentrated seaweed extract is prepared, and the seaweed is mainly kelp, enteromorpha, sargassum or macroalgae. Add 50 parts by weight of seaweed and 1000-1500 parts by weight of water into the extraction tank, then add 5-15 parts by weight of alkali (the alkali is sodium carbonate or potassium carbonate or potassium hydroxide), and gradually heat up to 60-80 degrees , keep warm for 1-2 hours, then turn on the stirring and continue to extract for 50-70 minutes. After the extraction is completed, open the opening valve to filter, and finally concentrate the filtrate in vacuum for 2-3 times. The concentrated seaweed extract contains seaweed oligosaccharides, plant Growth regulator, iodine, and medium and trace element nutrients, wherein the medium and trace elements are selected from calcium, magnesium, sulfur, copper, iron, manganes...
example 1
[0020] Take 30kg of kelp, add 800kg of water, then add 6kg of sodium carbonate, raise the temperature to 65°C, keep it warm for 2 hours, then turn on the stirring, continue stirring and extracting for 50-60 minutes. The extract is filtered and concentrated, and the concentrated seaweed extract is added before the granulation process of urea production. The weight ratio of the seaweed extract to urea is 15:100, and then granulated to obtain seaweed urea.
example 2
[0022] Take 30kg of Enteromorpha, add 800kg of water, then add 3kg of sodium hydroxide, raise the temperature to 70°C, keep it warm for 1.5 hours, then turn on the stirring, and continue stirring and extracting for 60 minutes. The extract is filtered and concentrated, and the concentrated seaweed extract is added before the granulation process of urea production. The weight ratio of the seaweed extract to urea is 10:100, and then granulated to obtain seaweed urea.
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