SU411061A1 - - Google Patents

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Publication number
SU411061A1
SU411061A1 SU1760316A SU1760316A SU411061A1 SU 411061 A1 SU411061 A1 SU 411061A1 SU 1760316 A SU1760316 A SU 1760316A SU 1760316 A SU1760316 A SU 1760316A SU 411061 A1 SU411061 A1 SU 411061A1
Authority
SU
USSR - Soviet Union
Prior art keywords
drying
pulp
fertilizer
indigestible
phosphorus
Prior art date
Application number
SU1760316A
Other languages
Russian (ru)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to SU1760316A priority Critical patent/SU411061A1/ru
Application granted granted Critical
Publication of SU411061A1 publication Critical patent/SU411061A1/ru

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Description

II

Изобретение относитс  к области получени  сложных удобрений из фосфатного сырь .This invention relates to the field of producing complex fertilizers from phosphate raw materials.

Известен способ получени  сложных удобрений путем кислотного разложени  фосфатного сырь  с последуюш,ей аммонизацией полученной пульпы, ее упариванием, сушкой и гранул цией.A method of obtaining complex fertilizers is known by acid decomposition of phosphate raw materials followed by ammonization of the obtained pulp, its evaporation, drying and granulation.

Недостатком известного снособа  вл етс  наличие неусво емого фосфора (практически от 3 до 9% относительных).A disadvantage of the known detachment is the presence of indigestible phosphorus (practically from 3 to 9% relative).

Предлагаемый способ отличаетс  от известного тем, что в упареппую пульпу перед сушкой ввод т азотную кислоту в количестве 0,5-2,0% от веса удобрени . Это способствует увеличению содержани  PaOs в усво емой форме.The proposed method differs from the known one in that nitric acid in an amount of 0.5-2.0% by weight of the fertilizer is introduced into the pulp before drying. This contributes to an increase in the content of PaOs in an assimilable form.

По описываемому способу в пульпу, получаемую упаркой аммонизировапного нитратнофосфатного раствора, ввод т 0,5-2% азотной кислоты (в расчете на количество удобрений после сушки). Далее пульпу сушат в обычных услови х. В процессе сушки часть неусво емых соединений фосфора превращаетс  в усво емую форму, что позвол ет снизить потери фосфора в неусво емой форме до 0,5- 1,5% (относительных) при одновременно увеличении относительного содержани  водорастворимой формы на 5-10%...According to the described method, 0.5-2% of nitric acid (based on the amount of fertilizer after drying) is introduced into the pulp produced by the ammonium nitrate phosphate solution. Next, the pulp is dried under ordinary conditions. In the process of drying, a part of the indigestible phosphorus compounds is transformed into an assimilable form, which makes it possible to reduce the loss of phosphorus in an indigestible form to 0.5-1.5% (relative) while simultaneously increasing the relative content of the water-soluble form by 5-10%. .

Результаты анализов нитрофоса, полученного по нредложенному способу в лабораторных услови х, по сравнению с удобрени ми, полученными из тех же растворов без добавок азотной кислоты, приведепы в таблице.The results of the analyzes of nitrophos prepared according to the proposed method under laboratory conditions, as compared with fertilizers obtained from the same solutions without the addition of nitric acid, are given in the table.

Состав полученных удобрений, %The composition of the fertilizer,%

10ten

1515

2020

Примечание: APaOj - потер  фосфора в неусво емой форме.Note: APaOj is the loss of phosphorus in an indigestible form.

Предмет изобретени Subject invention

2525

Способ получени  сложных удобрений путем кислотного разложени  фосфатного сырь  с последуюш;ей аммоиизацией полученной пульпы , ее упариванием, сушкой и гранул цией, о т л и ч а ю щ и и с   тем, что, с целью увеличе3 ни  содерлони  фосфорного ангидрида (РгОб) в усво емой форме, в упаренную пуль .4 пу перед сушкой ввод т азотную кислоту в количестве 0,5-2,0% от веса удобрени .The method of obtaining complex fertilizers by acid decomposition of phosphate raw materials, followed by ammonization of the obtained pulp, its evaporation, drying and granulation, in order to increase the content of phosphoric anhydride (PrOb) in digestible form, nitric acid in an amount of 0.5-2.0% by weight of fertilizer is injected into one of the bullets of .4 pu before drying.

SU1760316A 1972-03-15 1972-03-15 SU411061A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1760316A SU411061A1 (en) 1972-03-15 1972-03-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1760316A SU411061A1 (en) 1972-03-15 1972-03-15

Publications (1)

Publication Number Publication Date
SU411061A1 true SU411061A1 (en) 1974-01-15

Family

ID=20506836

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1760316A SU411061A1 (en) 1972-03-15 1972-03-15

Country Status (1)

Country Link
SU (1) SU411061A1 (en)

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