SU691398A1

SU691398A1 - Method of preparing titanium phosphate

Info

Publication number: SU691398A1
Application number: SU782610809A
Authority: SU
Inventors: Виктор Павлович Титов; Николай Иванович Воробьев; Владимир Григорьевич Просолович; Людмила Григорьевна Петрушенко; Николай Антонович Горбатенко
Original assignee: Белорусский технологический институт им. С.М.Кирова
Priority date: 1978-04-20
Filing date: 1978-04-20
Publication date: 1979-10-15

Description

; - -. -. . - : V :.Изобретение относитсй к технологий получени фосфата титана, который примен етс в хроматографии в качестве ионообменника, в лакокрасочной промышленности в качестве пигмента.; - -. -. . -: V: The invention relates to technologies for producing titanium phosphate, which is used in chromatography as an ion exchanger, in the paint industry as a pigment.

Известен.способ получени фосфата титана путем взаимодействи прёдгидролизного раствора (полупродукта производства двуокиси титана сернокислотным способом) с фосфат-ионами. Дл удалени примесей гель фосфата титана обрабатывают 15%-«ым раствором сол ной .кислоты при 80 С.A known method of producing titanium phosphate by reacting a hydrolysis solution (intermediate of titanium dioxide production by the sulfuric acid method) with phosphate ions. To remove impurities, titanium phosphate gel is treated with a 15% hydrochloric acid solution at 80 C.

Продукт содержит 0,005% соединени железа, если на 1 кг гел фосфата титана расхооовать 10 л 15%-ной сол ной кислоты l.The product contains 0.005% iron compound, if 10 liters of 15% hydrochloric acid l are consumed per kg of titanium phosphate gel.

Недостатком известного способа вл етс большой расход сол ной кислоты и энергозатраты на отмывку фосфата титана от примесей железа.The disadvantage of this method is the high consumption of hydrochloric acid and the energy consumption for washing titanium phosphate from iron impurities.

Целью изобретени вл етс снижение расхода сол ной кислоты, количестваThe aim of the invention is to reduce the consumption of hydrochloric acid, the amount

i сточных вод и сни5кение температуры отмывки.i waste water and a decrease in washing temperature.

Поставленна цель достигаетс описываемым способом получени фосфата титана, включающим взаимодействие соединений титана с фосфат-ионами с последующей фильтрацией и промыйсой. фосфата титана соЛ ной кислотйй в присутствии металлического цйнйа. Отличительным признаком предложенного способа вл етс проведение прс 1ывки фосфата титана в присутствии цинка. This goal is achieved by the described method of producing titanium phosphate, which includes the interaction of titanium compounds with phosphate ions, followed by filtration and washing. titanium phosphate salt acid in the presence of a metallic line. A distinctive feature of the proposed method is to conduct titanium phosphate in the presence of zinc.

При этом вьщел ющийс атомарный водород в результате реакции цинка с сол ной кислотой восстанавливает железо (III) до железа (ill), которое легче десорбируетс с осадка, чем трехвалент ное.At the same time, the resulting atomic hydrogen, as a result of the reaction of zinc with hydrochloric acid, reduces iron (III) to iron (ill), which is easier to desorb from the precipitate than the trivalent one.

Claims

These differences will reduce the consumption of hydrochloric acid by 10 times, while titanium phosphate contains 0.005% iron in terms of (prototype titanium phosphate contains 0.04% iron; iron at a concentration of hydrochloric acid of 5%). The proposed method also makes it possible to reduce the temperature at which the process is conducted from 80 ° C to room temperature. Example 1. 10 g of titanium phosphate, obtained by reacting a prehydrolysis solution with phosphate ions, are filtered. The iron content of 1.32% in terms of. The precipitate is repulped at room temperature in 5 O ml of 5% hydrochloric acid in the presence of O-3 g of zinc. The finished product contains 0, OO5% iron in terms of Rvve, Whiteness 98%. -...;. ;.:. , ::: Example 2. 10 g of titanium phosphate is determined by the interaction of an extrapolar solution with a phosphate solution followed by phosphate, ociaflka, ctjjlepjkiafliero D. 32% of Iron in terms of Fej 63. % - oh hydrochloric acid in the presence of 0.3 g of zinc. The finished product contains 0.004% of iron in terms of Fe2Oz. Whiteness 98%. Formula for producing a method for producing titanium phosphate, including the interaction of titanium compounds with phosphate and subsequent filtration and washing of the precipitate with hydrochloric acid, characterized in that, in order to reduce the consumption of hydrochloric acid, the amount of waste water and decrease the washing temperature, washing is carried out in the presence of zinc metal. Sources of information taken into consideration in the examination 1. US Patent No. 3914381, cl. 423-О5, published. 1975.