SU682487A1 - Method of the preparation of magnesite additive - Google Patents

Method of the preparation of magnesite additive

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Publication number
SU682487A1
SU682487A1 SU782584639A SU2584639A SU682487A1 SU 682487 A1 SU682487 A1 SU 682487A1 SU 782584639 A SU782584639 A SU 782584639A SU 2584639 A SU2584639 A SU 2584639A SU 682487 A1 SU682487 A1 SU 682487A1
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SU
USSR - Soviet Union
Prior art keywords
magnesite
preparation
additive
mgo
terms
Prior art date
Application number
SU782584639A
Other languages
Russian (ru)
Inventor
Александра Михайловна Абросимова
Ленина Михайловна Голиус
Анатолий Ефимович Шевцов
Александр Фатеевич Моисеенко
Михаил Тимофеевич Ивахненко
Прасковья Кузьминична Шинкаренко
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Предприятие П/Я В-2609
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Priority to SU782584639A priority Critical patent/SU682487A1/en
Application granted granted Critical
Publication of SU682487A1 publication Critical patent/SU682487A1/en

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  • Fertilizers (AREA)

Description

В результате экзотермической реакции реакционна  масса разогреваетс  до 108°С. Степень растворени  магнезита - 96,0%.As a result of the exothermic reaction, the reaction mass is heated to 108 ° C. The degree of dissolution of magnesite is 96.0%.

Нерастворившийс  осадок отдел ют фильтрацией.The undissolved precipitate is separated by filtration.

Раствор в количестве 1070 мл имеет состав: 4,8% избыточной азотной кислоты; 10,9% MgO; 0,56% СаО и 0,50% НгОз.The solution in the amount of 1070 ml has the composition: 4.8% of excess nitric acid; 10.9% MgO; 0.56% CaO and 0.50% HgOz.

Высушенный в сушильном шкафу осадок в количестве 16,0 г имет следуюший состав: М§(ЫОз)2 64,9% (в пересчете на MgO 35,1%); Ca(NO3)2 4,74% (в пересчете на СаО 3,24%); полуторные окислы 8,15% (в пересчете на нитратную форму К2Оз 5,36%); SiO2 16,25%; остальное - влага. Степень извлечени  MgO - 97,.The precipitate dried in the drying cabinet in the amount of 16.0 g has the following composition: Mg (NH3) 2 64.9% (in terms of MgO 35.1%); Ca (NO3) 2 4.74% (in terms of CaO, 3.24%); one and a half oxides of 8.15% (in terms of the nitrate form of K2Oz, 5.36%); SiO2 16.25%; the rest is moisture. The degree of extraction of MgO - 97 ,.

Пример 2. Процесс осупдествл ют как в примере 1. Дл  разложени  236 г каустического магнезита берут 45%-ную азотную кислоту с избытком 5% в количестве 1148 мл. Температура реакционной массы- 112°С.Example 2. The process is finalized as in Example 1. To decompose 236 g of caustic magnesite, take 45% nitric acid with an excess of 5% in an amount of 1148 ml. The temperature of the reaction mass is 112 ° C.

Получают 1050 мл раствора, содержащего , %: MgO 11-29; СаО 0,62; Н2Оз 0,40; избыточна  азотна  кислота 5,39. Степень растворени  магнезита - 89,9%. Осадок после сушки в количестве 15,8 г имеет состав: Mg(:NO3)2 68,93% (в пересчете на СаО 2,93%); полуторные окислы -4,82% (в пересчете на нитратную форму НгОз - 3,21%); SiO2 16,67%; остальное - влага. Степень извлечени  MgO - 96,0%.Get 1050 ml of a solution containing,%: MgO 11-29; CaO 0.62; H2O3 0.40; excess nitric acid 5.39. The degree of dissolution of magnesite is 89.9%. The precipitate after drying in the amount of 15.8 g has the composition: Mg (: NO3) 2 68.93% (in terms of CaO 2.93%); one-and-a-half oxides -4.82% (in terms of the nitrate form NgOz - 3.21%); SiO2 16.67%; the rest is moisture. The degree of extraction of MgO is 96.0%.

Пример 3. Процесс осуществл ют как в примере 1. Дл  разложени  236 г каустического магнезита берут 1393 мл 40%-ной азотной кислоты с избытком 10% противExample 3. The process is carried out as in Example 1. To decompose 236 g of caustic magnesite, take 1393 ml of 40% nitric acid with an excess of 10% against

стехиометрии. Температура реакционной массы - 106°С.stoichiometry. The temperature of the reaction mass is 106 ° C.

После отделени  осадка на фильтре получают раствор в количестве 1200 мл, содержащий , %: MgO 10,5; СаО 0,56; 0,59; избыточна  азотна  кислота 5,21. Степень растворени  магнезита - 95,1%. Осадок после сушки в количестве 15,4 г имеет следующий состав: Mg(NO3)2 67,52% (в иересчете на MgO 36,5%); Са(N03)24,28% (в пересчете на СаО 2,92%); полуторные окислы 8,34% (в пересчете на нитратную форму R203 5,54%); SiOs 16,29%; остальное - влага.After separating the precipitate on the filter, a solution is obtained in an amount of 1200 ml, containing,%: MgO 10.5; CaO 0.56; 0.59; excess nitric acid 5.21. The degree of dissolution of magnesite is 95.1%. The precipitate after drying in the amount of 15.4 g has the following composition: Mg (NO3) 2 67.52% (in terms of MgO 36.5%); Ca (N03) 24.28% (in terms of CaO 2.92%); one and a half oxides of 8.34% (in terms of the nitrate form R203 5.54%); SiOs 16.29%; the rest is moisture.

Степень извлечени  MgO - 97,5%.The MgO recovery rate is 97.5%.

Claims (2)

1.Кукушкин И. И. Пути улучшени  сыпучести азотных удобрений. «Донбасс, 1966, с. 31-32.1. Kukushkin I. I. Ways to improve the flowability of nitrogen fertilizers. “Donbass, 1966, p. 31-32. 2.Технологический регламент приготовлени  аммиачной селитры на Северодонецком производственном объединении «Азот. 1972. Раздел. Описание технологического процесса. Стади . Приготовление и введение магнезитовой добавки.2. Technological regulations for the preparation of ammonium nitrate at the Severodonetsk Production Association “Nitrogen. 1972. Section. Description of the process. Stage Preparation and introduction of magnesite additives.
SU782584639A 1978-03-01 1978-03-01 Method of the preparation of magnesite additive SU682487A1 (en)

Priority Applications (1)

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SU782584639A SU682487A1 (en) 1978-03-01 1978-03-01 Method of the preparation of magnesite additive

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SU782584639A SU682487A1 (en) 1978-03-01 1978-03-01 Method of the preparation of magnesite additive

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SU682487A1 true SU682487A1 (en) 1979-08-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2562269C1 (en) * 2014-04-03 2015-09-10 ОАО "Минудобрения" Method of producing magnesia additive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2562269C1 (en) * 2014-04-03 2015-09-10 ОАО "Минудобрения" Method of producing magnesia additive

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