SU808368A1 - Method of purifying hydrated titanium dioxide - Google Patents
Method of purifying hydrated titanium dioxide Download PDFInfo
- Publication number
- SU808368A1 SU808368A1 SU792771552A SU2771552A SU808368A1 SU 808368 A1 SU808368 A1 SU 808368A1 SU 792771552 A SU792771552 A SU 792771552A SU 2771552 A SU2771552 A SU 2771552A SU 808368 A1 SU808368 A1 SU 808368A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- suspension
- reducing agent
- titanium dioxide
- treated
- hydrated titanium
- Prior art date
Links
Landscapes
- Paints Or Removers (AREA)
Description
Изобретение относитс к проиаводст .ву двуокиси титана, в частности в ее гидратированной форме, примен емой, нагь ример, в лакокрасочной, бумажной и текстильной промышленности. Известен способ очистки гидратированной двуокиси татана от хромофорных примесей железа, кобальта, ванади и других путем ее обработки промьтным растворсы содержащим ионы трех- и четырехвалент ного титана и псверхвостно-активные вещества l j. Однако така очистка усложн ет мно гортадийную схему получени гидроокиси титана дополнительными операци ми по получению промьгоного раствора. Известен способ очистки гидратирсшавн ной двуокиси титана (ГДТ) путем обработки ее суспензии порошкообразным мэталлическим восстановителем - металлическим цинком в присутствии неионоге ного поверхностно-активного вещества (ПАВ) и серной кислоты в два приема при нагревании до 4О-1ОО С с введением сначала 80 % восстановител от общего ето количества, а оставшейс его части по истечении ЗО мин после подачи первой порции. Известный процесс провод т в отсутствии кислорода дл rf предотвращение окислени восстановител при содержании ионов трехвалентного татана 0,1-0,6 г/л. Обработанную указанным пути суспензию ГДТ далее промывают и фильтигют| 2. Недостатком известного способа вл етс недостаточно глубрка очистка ГДТ ввиду применени малоэффективного. восстановител Ш неионогеиного характера . Цель изобретени - повышение степени очистки гидратирсеанной двуокиси титана. Поставленна цепь достигаетс путем введени в исходную суспензию ион нного поверхностно-активного вещества тепа полнеисриламида, сульфанола и поливинилового спирта с последующей обра- боткой этой суспензии порошкообразным металлическим восстановителем с размеThe invention relates to the production of titanium dioxide in particular, in its hydrated form used, as in paint and varnish, paper and textile industries. A known method of purification of hydrated Tatan dioxide from chromophore impurities of iron, cobalt, vanadium and others by treating it with promynth solutions containing ions of trivalent and tetravalent titanium and pv above the active substances l j. However, such purification complicates the multi-stage scheme for obtaining titanium hydroxide by additional operations for obtaining the promigonous solution. A known method of purification of hydrated titanium dioxide (GDT) by treating its suspension with powdered metallic reducing agent — metallic zinc in the presence of a non-ionic surfactant and surfactant and sulfuric acid in two steps when heated to 4O-1OO C with the introduction of first 80% of reducing agent of the total amount of this, and the rest of it after the expiry of the 30 minutes after the first batch is delivered The known process is carried out in the absence of oxygen to prevent the oxidation of the reducing agent at rf when the content of trivalent Tatan ions is 0.1-0.6 g / l. The treated GDT suspension is treated in the indicated way, then washed and filtered | 2. The disadvantage of this method is not sufficiently deep cleaning of DGT due to the use of inefficient. the reducing agent of the non-ionic nature. The purpose of the invention is to increase the degree of purification of hydrated titanium dioxide. The delivered chain is achieved by introducing teplonisrylamide, sulfanol and polyvinyl alcohol into the initial suspension of the ionic surfactant, followed by treating the suspension with a powdered metal reducing agent with a
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792771552A SU808368A1 (en) | 1979-04-16 | 1979-04-16 | Method of purifying hydrated titanium dioxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792771552A SU808368A1 (en) | 1979-04-16 | 1979-04-16 | Method of purifying hydrated titanium dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
SU808368A1 true SU808368A1 (en) | 1981-02-28 |
Family
ID=20829994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792771552A SU808368A1 (en) | 1979-04-16 | 1979-04-16 | Method of purifying hydrated titanium dioxide |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU808368A1 (en) |
-
1979
- 1979-04-16 SU SU792771552A patent/SU808368A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106115793B (en) | A kind of ferric oxide red colorant and preparation method thereof | |
US2390272A (en) | Purification of gelatinous hydroxides | |
SU808368A1 (en) | Method of purifying hydrated titanium dioxide | |
SU841595A3 (en) | Method of processing titanium dioxide hydrate suspension into pigment | |
JPH04270122A (en) | Method for production of tantalum niobium hydroxide and oxide low in fluoride content | |
KR100481760B1 (en) | Process for removing selenium from a selenium-containing liquid | |
RU2289638C1 (en) | Method for waste acidic solution regeneration after etching titanium alloys | |
US3985858A (en) | Treatment of zinc hydroxide slurry and recovery of zinc-containing product therefrom | |
US2144051A (en) | Method of treating water | |
WO1988000249A1 (en) | Tungsten extraction from ore | |
US4060385A (en) | Method for hydrogen peroxide bleaching in acid or neutral solutions | |
JPS58222157A (en) | Purification of carbon black | |
CN108754179A (en) | A kind of method of oxidation pre-treatment secondary material containing zinc | |
US4282190A (en) | Process for the manufacture of iron and aluminum-free zinc chloride solutions | |
US4169054A (en) | Process for concentrating and purifying aqueous sulphuric acid solutions | |
SU1411348A1 (en) | Method of cleaning zinc solutions of iron (ii) and manganese (ii) | |
SU552290A1 (en) | The method of purification of sulfuric acid from organic impurities | |
US2017440A (en) | Purification of hydrogen peroxide | |
JPS60206487A (en) | Treatment of waste stainless steel pickling solution | |
US4137050A (en) | Coal desulfurization | |
SU891124A1 (en) | Method of regeneration of cermet filter | |
US2403248A (en) | Iron hydrate and the manufacture and of use the same | |
SU1759928A2 (en) | Method of producing zinc oxide by hydrometallurgy | |
JPS5573390A (en) | Treatment method for water | |
SU812724A1 (en) | Method of producing titanium dioxide pigment |