SU698966A1 - Method of producing fluorine-free phosphates - Google Patents

Method of producing fluorine-free phosphates

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Publication number
SU698966A1
SU698966A1 SU782618225A SU2618225A SU698966A1 SU 698966 A1 SU698966 A1 SU 698966A1 SU 782618225 A SU782618225 A SU 782618225A SU 2618225 A SU2618225 A SU 2618225A SU 698966 A1 SU698966 A1 SU 698966A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phosphates
producing fluorine
raw material
free phosphates
defluorization
Prior art date
Application number
SU782618225A
Other languages
Russian (ru)
Inventor
Игорь Георгиевич Костыльков
Людмила Васильевна Рогова
Владимир Николаевич Новосельцев
Владимир Васильевич Жижин
Виталий Федорович Карпов
Original Assignee
Предприятие П/Я В-8830
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 Предприятие П/Я В-8830 filed Critical Предприятие П/Я В-8830
Priority to SU782618225A priority Critical patent/SU698966A1/en
Application granted granted Critical
Publication of SU698966A1 publication Critical patent/SU698966A1/en

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Description

(54) СПОСОБ пбЛУЧЕНИЯ ОБЕСФТОРЕННЫХ ФОСФАТОВ(54) METHOD FOR PREPARING OF EXPEDIENT PHOSPHATES

Изобретение относитс  к способу получени  обесфторенных фосфатов, Используемых в качестве кормовых средств и удобрений. Известен способ обесфторивани  фосфатов путем их прокаливани  в смеси с кремнеземом при 1400-1500с в газовой среде, образующейс  от сж гани  светильного газа.Однако введение дополнительного сырь  - кремнезема уменьшает процентное содержание полезного продукта ( Р„ О) в фосфатах на 5-10% 1. Наиболее близок к предлагаемому изобретению способ получени  обесфторенных фосфатов , заключающийс  в обработке апатита продуктами горени  углеводородных топлив при 1250-1400С. Процесс ведут во вращающихс  печах при противоточной подаче сырь  и продуктов горени  2 Недостатками способа  вл ютс  невысока  степень обесфторивани  сырь  (до 92%) и мала  интенсивност процесса вследствие высокого уровн  температур в головной части печи (1650-Г700°С) и, следовательно, возможности оплавлени  сырь , образовани  колец и настылей в печи. Цель изобретени  - увеличение степени обесфторивани  а1рь  с одновременной интенсификацией процесса . Это достигаетс  в предлагаемом способе обесфторивани :фосфатов, по которому апатит подают в печь двум  потоками, причем один из них. подают в пр мотоке с продуктами горени  углеводородных топлив, а другой - в противотоке. Отличительной особенностью способа  вл етс  то, что раздел ют подачу сырь  и при этом 5-50% сырь  с диаметром частиц .О,5-250|Мкм подают пр мотоком, а остальное сырье подают противотоком по отношению к топливному факелу. Это позвол ет повысить степень обесфторивани  сырь  до 95-98% и интенсифицировать процесс в 1,22 раза, так как благодар  пр мохочной подаче части сырь , снижаетс  температура  дра топливного факела, устран етс  перегрев и оплавление фосфатов и, в то же врем , осуществл етс  перенос тепла в зону низких температур. Зона.рабочих температур.This invention relates to a process for the production of free phosphates used as feeds and fertilizers. The known method of defluorization of phosphates by calcining them in a mixture with silica at 1400-1500s in a gaseous medium, resulting from the compression of the luminous gas. However, the introduction of additional raw material, silica, reduces the percentage of useful product (P „O) in phosphates by 5-10% 1 Closest to the proposed invention is a method for the production of defluorinated phosphates, which consists in treating apatite with the combustion products of hydrocarbon fuels at 1250-1400 ° C. The process is carried out in rotary kilns with countercurrent feed of raw materials and combustion products. 2 The disadvantages of the method are the low degree of defluorization of the raw material (up to 92%) and low intensity of the process due to the high temperature level in the furnace head part (1650-700 ° C) and, consequently, melting of raw materials, the formation of rings and walls in the furnace. The purpose of the invention is to increase the degree of defluorization of the oil with simultaneous intensification of the process. This is achieved in the proposed method of defluorization: phosphates, in which apatite is fed into the furnace in two streams, one of which is. served in the flow with the combustion products of hydrocarbon fuels, and the other in countercurrent. A distinctive feature of the method is that the raw material supply is divided and, at the same time, 5-50% of the raw material with a particle diameter. O, 5-250 | μm are fed by a flow, while the rest of the raw material is fed in countercurrent to the fuel torch. This makes it possible to increase the degree of defluorization of the raw material to 95-98% and intensify the process 1.22 times, because, due to the direct feeding of part of the raw material, the core temperature of the fuel torch decreases, overheating and melting of phosphates are eliminated and, at the same time, heat transfer to the low temperature zone. Zone. Working temperatures.

ПРИ которых происхрдитобесфторивание (1250-1400°С) / раст гиваетс  по длине:реактора.AT which the occurrence of defluoride reflux (1250-1400 ° C) / stretches along the length of the reactor.

Целео:ообраз11ость мыо аиных ус. ВИЙ проведени  процесса прои.илюс.трирована в таблице.Tseleo: the appearance of my mustache. VIY conducting process proi.ilus.trirovana in the table.

SU782618225A 1978-05-22 1978-05-22 Method of producing fluorine-free phosphates SU698966A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782618225A SU698966A1 (en) 1978-05-22 1978-05-22 Method of producing fluorine-free phosphates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782618225A SU698966A1 (en) 1978-05-22 1978-05-22 Method of producing fluorine-free phosphates

Publications (1)

Publication Number Publication Date
SU698966A1 true SU698966A1 (en) 1979-11-25

Family

ID=20765709

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782618225A SU698966A1 (en) 1978-05-22 1978-05-22 Method of producing fluorine-free phosphates

Country Status (1)

Country Link
SU (1) SU698966A1 (en)

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