SU174363A1 - METHOD OF OBTAINING TITANIUM DIOXIDE FROM IRON TITANIUM CONCENTRATESl't> &PLT:;;1:; e - <* ^ I Т1.:. :: Cheg :: DPI:;. JA "^ I f KA - Google Patents
METHOD OF OBTAINING TITANIUM DIOXIDE FROM IRON TITANIUM CONCENTRATESl't> &PLT:;;1:; e - <* ^ I Т1.:. :: Cheg :: DPI:;. JA "^ I f KAInfo
- Publication number
- SU174363A1 SU174363A1 SU842167A SU842167A SU174363A1 SU 174363 A1 SU174363 A1 SU 174363A1 SU 842167 A SU842167 A SU 842167A SU 842167 A SU842167 A SU 842167A SU 174363 A1 SU174363 A1 SU 174363A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- titanium dioxide
- concentratesl
- cheg
- plt
- dpi
- Prior art date
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title description 9
- 239000004408 titanium dioxide Substances 0.000 title description 5
- -1 IRON TITANIUM Chemical compound 0.000 title description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000012141 concentrate Substances 0.000 description 6
- 239000003345 natural gas Substances 0.000 description 4
- 238000002386 leaching Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000460 iron oxide Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
Description
Ильменитовые концентраты восстанавливают в кип щем слое твердым восстановителем, например углеродом. Предлагаетс способ восстановлени железотитановых концентратов в кип щем слое неконверсированным природным газом. Это позвол ет удешевить процесс и повысить степень извлечени двуокиси титана. Сущноть изобретени сводитс к следующему . Железотитановый концентрат восстанавливают природным газом при 800-1000° С в обогреваемой снаружи реторте из нержавеющей стали. Неконверсированный природный газ подают в слой гор чего концентрата по принципу кип щего сло . Продукты восстановлени подвергают по,следовательному выщелачиванию слабой сол ной кислотой и 20- ЗОо/о-ной - в автоклаве при температуре около 200° С и давлении 20 атм. Растворы, получаемые от выщелачивани слабой кислотой, после нейтрализации выбрасывают Б отвал, а кислый раствор после автоклавного выщелачивани подают в голову процесса дл выщелачивани железа. Расход крепкой сол ной кислоты на тонну двуокиси титана составл ет около одной тонны , а расход природного газа 200-250 мз на тонну концентрата (с учетом того, что выход щий из кип щего сло газ используетс дл обогрева стенок реактора). Дожигание газа дл нагрева реактора производитс неполным его сжиганием с коэффициентом расхода воздуха 0,5-0,8 от теоретического (такой метод позвол ет обеспечить долговечность службы металлических реторт). Конечный продукт переработки самотканского концентрата - двуокись титана - содержит (в ,%): двуокись титана92-96 кр ем н ез ем1,5-3 окись хрома0,1--0,3 окись кальци 0,2 окись алюмини до 1 окись магни 0,2 закись железа0,2-0,3 Предмет изобретени Способ получени двуокиси титана из железотитановых концентратов, отличающийс тем, что, с целью удешевлени процесса и повышени степени извлечени двуокиси титана, исходный концентрат восстанавливают неконверсированным природным газом в кип щем слое при 800-1000° С, после чего продукты восстановлени подвергают последовательному выщелачиванию слабой сол ной кислотой и 20-ЗОо/о-ной сол ной кислотой в автоклаве при температуре около 200° С.Ilmenite concentrates are reduced in a fluidized bed with a solid reducing agent, such as carbon. A method is proposed for reducing iron-titanium concentrates in a fluidized bed with unconverted natural gas. This makes the process cheaper and increases the recovery rate of titanium dioxide. The essence of the invention is as follows. Zhelezotitanovy concentrate restore natural gas at 800-1000 ° C in a heated outside stainless steel retort. Unconverted natural gas is fed to the bed of hot concentrate in a fluidized bed manner. The products of reduction are subjected to successive leaching with weak hydrochloric acid and 20 ° -O3 / o in an autoclave at a temperature of about 200 ° C and a pressure of 20 atm. The solutions obtained from leaching with a weak acid, after neutralization, emit a B heap, and an acidic solution after an autoclave leach is fed into the head of the process to leach the iron. The consumption of strong hydrochloric acid per ton of titanium dioxide is about one ton, and the consumption of natural gas is 200-250 cubic meters per ton of concentrate (considering that the gas coming out of the fluidized bed is used to heat the walls of the reactor). The afterburning of the gas to heat the reactor is performed by incomplete combustion with an air flow rate of 0.5-0.8 of the theoretical (this method ensures the longevity of the metal retorts). The final product of the processing of the Samotkan concentrate - titanium dioxide - contains (in,%): titanium dioxide 92-96 kr at a power of 1.5-3 chromium oxide 0.1–0.3 calcium oxide 0.2 aluminum oxide to 1 magnesium oxide 0 , 2 ferrous oxide, 0.2 to 0.3. ° C, after which the products of reduction are subjected to m serial leaching weak hydrochloric acid and 20-ZOO / o hydrochloric hydrochloric acid in an autoclave at a temperature of about 200 ° C.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU174363A1 true SU174363A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU639089B2 (en) * | 1990-03-02 | 1993-07-15 | Wimmera Industrial Minerals Pty. Ltd. | Production of synthetic rutile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU639089B2 (en) * | 1990-03-02 | 1993-07-15 | Wimmera Industrial Minerals Pty. Ltd. | Production of synthetic rutile |
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