SU105992A1 - The method of obtaining concentrated nitrogen-phosphate fertilizer - Google Patents

The method of obtaining concentrated nitrogen-phosphate fertilizer

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Publication number
SU105992A1
SU105992A1 SU160442A SU160442A SU105992A1 SU 105992 A1 SU105992 A1 SU 105992A1 SU 160442 A SU160442 A SU 160442A SU 160442 A SU160442 A SU 160442A SU 105992 A1 SU105992 A1 SU 105992A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phosphate fertilizer
obtaining concentrated
concentrated nitrogen
nitrogen
calcium
Prior art date
Application number
SU160442A
Other languages
Russian (ru)
Inventor
М. Набиев
Original Assignee
М. Набиев
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
Application filed by М. Набиев filed Critical М. Набиев
Priority to SU160442A priority Critical patent/SU105992A1/en
Application granted granted Critical
Publication of SU105992A1 publication Critical patent/SU105992A1/en

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Description

Известен способ разложени  природных (|)осфатов азотной кислотой с получением раствора, содержащего нитрат кальци  и фосфорную кислоту , с последующим осаждением из этого раствора солей кальци  в форме ннтрата кальци  (вымораживанием ) и.чи в форме сульфата кальни  (обменной реакцией с сульфатами щелочных металлов),There is a known method of decomposing natural (|) osfates with nitric acid to produce a solution containing calcium nitrate and phosphoric acid, followed by precipitation of calcium salts in the form of calcium nitrate (freezing) and chalium in the form of catalum sulfate (exchange reaction with alkali metal sulfates). ),

Отличите, сссбенностью описываемого способа  вл етс  использование раствора после отделени  нитрата или сульфата кальци  дл  лолучепи  копцентрироваппого азотнофосфорного удобрени .Distinguish between the described method is the use of a solution after the separation of calcium nitrate or sulphate for luchupi centrifugal nitrogen-phosphate fertilizer.

С этой целью фильтрат после отделени  основного количества солей кальцн  (отдел етс  около 75% солей кальци  от общего количества их в исходном растворе) }1асыщают нитрозпыми газами цехов производства азотной кислоты.To this end, the filtrate, after separating the main amount of calcium salts (about 75% of the calcium salts are separated from the total amount of them in the initial solution), is saturated with the nitrose gases of the nitric acid production workshops.

Полученный раствор, содержащий азотпую кислоту и фосфорную кислоту , а также не выкристаллизовавшийс  при вымораживании нитрат кальци  или питраты щелочных металлов , нейтрализуют газообразным аммиаком метОлЧом пульверизации.The resulting solution, containing nitric acid and phosphoric acid, as well as non-crystallized calcium nitrate or alkali metal nitrates upon freezing, is neutralized with gaseous ammonia by pulverization.

При этом, мину  стадию упарки, за счет тепла процесса нейтрализации сразу по.тучают сухой сыпучий продукт - сложное концентрированное; азотпофосфориое удобрение, представл юнгее собою смесь аммиачной селитры, преципитата и нитратов кальцн  и натри  (кали ).At the same time, the stage of evaporation by the mine, due to the heat of the neutralization process, immediately dry dry bulk product - complex, concentrated; nitrogen-phosphorus fertilizer, representing a mixture of ammonium nitrate, precipitate and calcium and sodium (potassium) nitrate.

Пред м е т изобретен и  Before the mark is invented and

Способ по.лучени  копцентрироBanuoio азотнофосфорного удобрени  раз.:1оже 1ием природных фосфатов азотной кислотой до получегп   pac,TBOj)a, содержащего нитрат кальци  и фосфорную кислоту, с ноСоТедующим осаждением из пего солей кальци  33 форме иитрата кальци  (вымораживанием) или в форме Сзльфата кальци  (обменной реакцией с сульфатами щелочных металлов ) и отделением осадка от раствора фильтрацией, отличающийс  тем, что, с целью получени  сухого сыпучего продукта, мину  стадию упарки, фильтрат иосле отделепи  основной количества солей кальци  насыщают нитрозными газами производства азотной кислоты и полученный концентрированный раствор, содержащий азотную кислот} и фосфорную кислоту, а также не выкристаллизовавшийс  при вымораживании нитрат кальци  или нитраты щелочных металлов, нейтрализуют газообразным аммиаком.The method of emission of copentric-banuoio nitrogen-phosphate fertilizer times. (exchange reaction with alkali metal sulphates) and separation of the precipitate from the solution by filtration, characterized in that, in order to obtain a dry granular product, pass the evaporation stage, the filtrate and after separating the main amount of calcium salts nitrous gases saturated with nitric acid production and the resulting concentrated solution containing nitric acid and phosphoric acid}, and are not freeze-crystallized calcium nitrate or nitrates of alkali metals, neutralized with gaseous ammonia.

SU160442A 1951-03-05 1951-03-05 The method of obtaining concentrated nitrogen-phosphate fertilizer SU105992A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU160442A SU105992A1 (en) 1951-03-05 1951-03-05 The method of obtaining concentrated nitrogen-phosphate fertilizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU160442A SU105992A1 (en) 1951-03-05 1951-03-05 The method of obtaining concentrated nitrogen-phosphate fertilizer

Publications (1)

Publication Number Publication Date
SU105992A1 true SU105992A1 (en) 1956-11-30

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ID=48379341

Family Applications (1)

Application Number Title Priority Date Filing Date
SU160442A SU105992A1 (en) 1951-03-05 1951-03-05 The method of obtaining concentrated nitrogen-phosphate fertilizer

Country Status (1)

Country Link
SU (1) SU105992A1 (en)

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