JPH03285820A - Production of titanium tetrachloride - Google Patents
Production of titanium tetrachlorideInfo
- Publication number
- JPH03285820A JPH03285820A JP8519690A JP8519690A JPH03285820A JP H03285820 A JPH03285820 A JP H03285820A JP 8519690 A JP8519690 A JP 8519690A JP 8519690 A JP8519690 A JP 8519690A JP H03285820 A JPH03285820 A JP H03285820A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- ore
- titanium tetrachloride
- coke
- titanium
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims description 30
- 238000005660 chlorination reaction Methods 0.000 claims abstract description 29
- 239000010936 titanium Substances 0.000 claims description 33
- 229910052719 titanium Inorganic materials 0.000 claims description 33
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 30
- 239000000571 coke Substances 0.000 abstract description 22
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 abstract description 15
- 239000006148 magnetic separator Substances 0.000 abstract description 2
- 229910003074 TiCl4 Inorganic materials 0.000 abstract 4
- 230000006735 deficit Effects 0.000 abstract 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 24
- 229910052801 chlorine Inorganic materials 0.000 description 24
- 239000000460 chlorine Substances 0.000 description 24
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 ilmenite Chemical compound 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、イルメナイト等の低品位チタン含有鉱石より
四塩化チタンを製造する四塩化チタン製造方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a titanium tetrachloride production method for producing titanium tetrachloride from a low-grade titanium-containing ore such as ilmenite.
金属チタンの中間原料である四塩化チタンは、−船釣に
は、天然ルチルあるいはイルメナイト等の低品位チタン
含有鉱石より鉄分等を除いた合成ルチルより製造されて
いる０合成ルチルを用いる従来の一般的な四塩化チタン
製造方法を、第３図および第４図にフローチャートにて
示す。Titanium tetrachloride, which is an intermediate raw material for titanium metal, is commonly used for boat fishing using synthetic rutile, which is manufactured from natural rutile or synthetic rutile obtained by removing iron from low-grade titanium-containing ores such as ilmenite. A typical method for producing titanium tetrachloride is shown in flowcharts in FIGS. 3 and 4.
従来は、合成ルチルの製造工程と合成ルチルを用いた四
塩化チタンの製造工程とが完全に分離しており、そのた
めに、我国のチタンメーカーは、通常は合成ルチルを購
入して四塩化チタンを製造し、更に金属チタンの製造を
行っている。Conventionally, the manufacturing process for synthetic rutile and the manufacturing process for titanium tetrachloride using synthetic rutile have been completely separated, and for this reason, titanium manufacturers in Japan usually purchase synthetic rutile to produce titanium tetrachloride. We also manufacture titanium metal.
合成ルチルの製造方法としては、イルメナイト等の低品
位チタン含有鉱石にコークスを加え、これに選択塩素化
炉内で塩素と反応させることにより、低品位チタン含有
鉱石に含まれる鉄分等を選択的に塩素化して除去する、
いわゆる選択塩素化法がある。選択塩素化により鉄分等
が除去されてチタン含有率が高められた高チタン含有鉱
石は、冷却後、コークスを除去されて合成ルチルとされ
る。コークス分離前に高チタン含有鉱石に含まれる未反
応の低品位チタン含有鉱石を磁力選鉱して選択塩素化法
に戻す場合もある。いずれにしても、製造された合成ル
チルは常温である。そして、四塩化チタンを必要とする
チタンメーカーは、購入した合成ルチルにコークスを加
え、これを四塩化チタン製造用塩素化炉内で処理して粗
四塩化チタンとしている。Synthetic rutile is produced by adding coke to ores containing low-grade titanium, such as ilmenite, and reacting them with chlorine in a selective chlorination furnace to selectively remove iron, etc. contained in ores containing low-grade titanium. remove by chlorination,
There is a so-called selective chlorination method. The high titanium-containing ore, whose titanium content has been increased by removing iron and the like through selective chlorination, is cooled and then the coke is removed to produce synthetic rutile. In some cases, the unreacted low-grade titanium-containing ore contained in the high-titanium-containing ore is subjected to magnetic beneficiation before coke separation and returned to the selective chlorination process. In any case, the produced synthetic rutile is at room temperature. Titanium manufacturers that require titanium tetrachloride add coke to the purchased synthetic rutile and process it in a chlorination furnace for producing titanium tetrachloride to produce crude titanium tetrachloride.
このような四塩化チタン製造方法によると、四塩化チタ
ンを必要とするチタンメーカーは、合成ルチル製造設備
を新設しない限りは、合成ルチルを購入せざるを得す、
その購入価格はイルメナイト等の低品位チタン含有鉱石
と比べると非常に高い。また、たとえ従来の合成ルチル
製造工程と四塩化チタン製造工程とを合体させたとして
も、従来の四塩化チタン製造工程で生じている次のよう
な問題は避は得ない。According to this titanium tetrachloride production method, titanium manufacturers that require titanium tetrachloride have no choice but to purchase synthetic rutile unless they construct new synthetic rutile production facilities.
Its purchase price is very high compared to low-grade titanium-containing ores such as ilmenite. Further, even if the conventional synthetic rutile manufacturing process and the titanium tetrachloride manufacturing process are combined, the following problems occurring in the conventional titanium tetrachloride manufacturing process cannot be avoided.
四塩化チタン製造用塩素化炉内に装入される合成ルチル
は、炉内で約１０００°Ｃの反応温度まで昇温されなけ
ればならない。四塩化チタンが生成する反応は発熱反応
であるが、同一炉で生産量の変動がある場合や塩素他炉
の長期使用により炉からの放熱量が増加した場合等には
、熱バランスがくずれる。そうなると、炉内での反応が
発熱反応であるにもかかわらず炉外からの入熱が必要ム
こなる。更に、その一方では、塩素化炉内への合成ルチ
ルの投入により、反応領域に局部的な低温部分が生じ、
反応性を低下させるという問題もある。Synthetic rutile charged into a chlorination furnace for producing titanium tetrachloride must be heated to a reaction temperature of about 1000° C. in the furnace. The reaction that produces titanium tetrachloride is an exothermic reaction, but the heat balance will be disrupted if there are fluctuations in the production volume in the same furnace or if the amount of heat released from the furnace increases due to long-term use of chlorine or other furnaces. In this case, heat input from outside the furnace becomes necessary even though the reaction inside the furnace is an exothermic reaction. Furthermore, on the other hand, by introducing synthetic rutile into the chlorination furnace, a localized low-temperature area is created in the reaction region,
There is also the problem of reducing reactivity.
本発明は上記諸問題を解決した極めて経済的で、反応性
も良好な四塩化チタン製造方法を提供することを目的と
する。The object of the present invention is to provide a method for producing titanium tetrachloride that is extremely economical and has good reactivity, which solves the above-mentioned problems.
本発明の四塩化チタン製造方法は、低品位チタン含有鉱
石を選択塩素化炉内で塩素化することによりチタン含有
率が高められた高チタン含有鉱石を、該高チタン含有鉱
石に付随するコークスと共に、常温まで冷却することな
く加熱状態のまま四塩化チタン製造用塩素化炉内に装入
することを特徴としてなる。The method for producing titanium tetrachloride of the present invention involves chlorinating a low-grade titanium-containing ore in a selective chlorination furnace to produce a high-titanium-containing ore with an increased titanium content, together with coke accompanying the high-titanium-containing ore. , is characterized in that it is charged into a chlorination furnace for producing titanium tetrachloride in a heated state without being cooled to room temperature.
第１図は本発明の四塩化チタン製造方法における代表的
プロセスを示すフローチャートである。FIG. 1 is a flowchart showing a typical process in the titanium tetrachloride manufacturing method of the present invention.
選択塩素他炉にイルメナイト等の低品位チタン含有鉱石
をコークスと共に装入し、低品位チタン含有鉱石に含ま
れている鉄分等を塩素化反応により除去して、そのチタ
ン含有率を高める。A low-grade titanium-containing ore such as ilmenite is charged into a selective chlorine furnace together with coke, and iron and the like contained in the low-grade titanium-containing ore are removed by a chlorination reaction to increase its titanium content.
選択塩素他炉から抽出された高温の高チタン含有鉱石は
、コークス分を含んだ状態のまま、しかも強制冷却され
ることなしに加熱状態で四塩化チタン製造用塩素他炉に
直接装入される（Ａ）。四塩化チタン製造用塩素他炉に
は、不足分のみのコークスが適宜補充される。The high-temperature, high titanium-containing ore extracted from the selective chlorine furnace is charged directly into the chlorine furnace for producing titanium tetrachloride while still containing coke and heated without being forced to cool. (A). The chlorine and other furnaces for titanium tetrachloride production are replenished with coke as needed to cover the shortage.
選択塩素他炉から抽出された高チタン含有鉱石を磁力選
鉱する場合には、選択塩素他炉からの抽出物を無冷却で
磁選装置に送って選鉱後の高チタン含有鉱石を加熱状態
のまま四塩化チタン製造用塩素他炉に装入することを基
本とする（Ｂ）。ただし、磁力選鉱に必要な７００〜８
００°Ｃ１特別な仕様を施さない場合は３００〜４００
″Ｃ程度の温度まで強制冷却を行うことは差し支えない
（Ｃ）。磁力選鉱により分離された未反応の低品位チタ
ン含有鉱石は選択塩素他炉に戻される。When high titanium-containing ore extracted from a selective chlorine furnace is subjected to magnetic beneficiation, the extract from the selective chlorine furnace is sent to the magnetic separator without cooling, and the high titanium-containing ore after beneficiation is subjected to four-way heating. Basically, chlorine for producing titanium chloride is charged into a furnace (B). However, the 700 to 8 required for magnetic beneficiation
00°C1 300-400 if no special specifications are applied
There is no problem in performing forced cooling to a temperature of about 100% (C).The unreacted low-grade titanium-containing ore separated by magnetic separation is returned to the selective chlorine furnace.
四塩化チタン製造用塩素他炉に装入される段階での高チ
タン含有鉱石の温度は高いほど望ましい。It is desirable that the temperature of the high titanium-containing ore be as high as possible when it is charged into a chlorine furnace for producing titanium tetrachloride.
選択塩素他炉で生成したガスは、第２図（ａ） （ｂ）
に示すように、遺灰塩素化設備内で処理してもよいし、
第２図（Ｃ）に示すように四塩化チタン製造設備のａ線
系に導入してもよい。後者の場合は、選択塩素化設備に
おけるガス処理装置が著しく簡素化される（特願昭６３
−１７７７３１）。Selective chlorine Gas generated in other furnaces is shown in Figure 2 (a) (b)
Ashes may be processed in a chlorination facility as shown in
As shown in FIG. 2(C), it may be introduced into the a-line system of titanium tetrachloride manufacturing equipment. In the latter case, the gas treatment equipment in the selective chlorination equipment is significantly simplified (Japanese Patent Application No. 63
-177731).
本発明の四塩化チタン製造方法は、従来の合成ルチルを
介した四塩化チタン製造方法と比べて次のような利点を
有する。The method for producing titanium tetrachloride of the present invention has the following advantages compared to the conventional method for producing titanium tetrachloride using synthetic rutile.
）イルメナイト等の低品位チタン含を鉱石より連続的に
四塩化チタンを製造するので、合成ルチルを必要としな
い。) Since titanium tetrachloride is continuously produced from low-grade titanium-containing ores such as ilmenite, synthetic rutile is not required.
１１）コークス分離工程が不要になる。11) Coke separation step becomes unnecessary.
ｉｉ）四塩化チタン製造用塩素他炉に装入するコークス
の量が大巾に低減される。ii) The amount of coke charged into the chlorine furnace for producing titanium tetrachloride is greatly reduced.
ｉｖ）選択塩素他炉で原料に取り込まれた熱が四塩化チ
タン製造用塩素化炉内に引き継がれ、炉外からの加熱が
不要になる。また、たとえ加熱を行うにしてもその熱量
は極めて僅かになる。iv) Selective Chlorine The heat taken into the raw material in another furnace is carried over into the chlorination furnace for producing titanium tetrachloride, eliminating the need for heating from outside the furnace. Further, even if heating is performed, the amount of heat will be extremely small.
■）四塩化チタン製造用塩素他炉へ投入される原料に反
応熱が殆ど吸収されないので、原料投入に伴う局部的な
低温域の発生がなくなり、反応性が改善される。(2) Chlorine for producing titanium tetrachloride, etc. Since almost no reaction heat is absorbed by the raw materials charged into the furnace, the occurrence of localized low temperature regions associated with raw material input is eliminated, and reactivity is improved.
■）四塩化チタン製造用塩素他炉で必要とする鉱石量が
確保されるように、選択塩素他炉を稼働させればよいの
で、効率の良い炉操業が可能になる。■) It is sufficient to operate the selective chlorine and other furnaces so that the required amount of ore is secured in the chlorine and other furnaces for titanium tetrachloride production, making it possible to operate the furnace efficiently.
■）四塩化チタン製造用塩素他炉にイルメナイト等の低
品位チタン含有鉱石を直接投入した場合は、その製造設
備の特に四塩化チタン凝縮系に大きな負担がかかって種
々の不都合を生じるが、本発明の四塩化チタン製造方法
では、選択塩素他炉に付随の凝縮系で不安定な塩化物が
除去されるので、四塩化チタン製造設備で上記の如き不
都合は生じない。従って、本発明法では既設の四塩化チ
タン製造設備がそのまま使用できる。■) If low-grade titanium-containing ores such as ilmenite are directly charged into a chlorine or other furnace for producing titanium tetrachloride, a large burden will be placed on the production equipment, especially the titanium tetrachloride condensation system, resulting in various inconveniences. In the method for producing titanium tetrachloride of the invention, unstable chlorides are removed in the condensation system attached to the selective chlorine furnace, so the above-mentioned inconvenience does not occur in the titanium tetrachloride production equipment. Therefore, in the method of the present invention, existing titanium tetrachloride production equipment can be used as is.
次に、本発明の詳細な説明する。 Next, the present invention will be explained in detail.
内径３００閣φの選択塩素他炉に、オーストラリア産イ
ルメナイト （ＴｉＣ２５３％、Ｆｅ０２５．２％、Ｆ
ｅｚＯｚ１６．３％を含む）にカルサインコークスを１
５重量％の比率で混合したものを６５０ｍｍの高さに充
填した。次いで、充填物をＡｒガスで流動させながら１
０００°Ｃまで昇温させた後、ＡｒガスをＣ１２ガス（
１，２Ｎｍ２／Ｈｒ）に置換し、それと同時にイルメナ
イトとカルサインコークスとの混合物をそれぞれ８５ｋ
ｇ／Ｈｒ 、５．３ｋｇ／Ｈｒの速度で選択塩素化炉内
の流動層に添加し始めた。イルメナイト中の鉄分等は塩
化され、選択塩素他炉から第３図（ｂ）に示される凝縮
系へ導いた。Australian ilmenite (TiC253%, Fe025.2%, F
(contains ezOz16.3%) and 1 calcine coke.
A mixture of 5% by weight was filled to a height of 650 mm. Next, while flowing the filling with Ar gas,
After raising the temperature to 000°C, Ar gas was replaced with C12 gas (
1,2Nm2/Hr), and at the same time, a mixture of ilmenite and calcine coke was replaced with 85k each.
The addition to the fluidized bed in the selective chlorination furnace was started at a rate of 5.3 kg/Hr. The iron content in ilmenite was chlorinated and led from the selective chlorine furnace to the condensation system shown in FIG. 3(b).
そして、選択塩素化炉内の流動層形成物（反応後のイル
メナイトおよびコークス）を５７ｋｇ／Ｈｒの速度で炉
内に抜き出し、これをそのまま四塩化チタン製造用塩素
他炉に投入し、若干量の不足分コークスを加えてＴｉＣ
１，を製造した。塩素他炉投入時の原料温度は７２０°
Ｃであった。これにより、四塩化チタン製造設備の凝縮
系にほとんど負担をかけずにチタン含有率８３％の高チ
タン含有鉱石が得られた。また、四塩化チタン製造用塩
素他炉で原料を昇温する必要もなく、反応領域が局部的
に冷却されることもなかった。更に、コークス使用量は
一旦合成ルチルを製造する場合と比べて１２％低減され
た。Then, the fluidized bed formed material (ilmenite and coke after the reaction) in the selective chlorination furnace was extracted into the furnace at a rate of 57 kg/Hr, and this was directly put into the chlorine and other furnace for producing titanium tetrachloride. Add coke to make up for the shortage and add TiC
1 was manufactured. The temperature of the raw materials when adding chlorine and other materials to the furnace is 720°
It was C. As a result, a high titanium-containing ore with a titanium content of 83% was obtained without placing almost any burden on the condensate system of the titanium tetrachloride production facility. In addition, there was no need to heat up the raw material in a chlorine furnace for producing titanium tetrachloride, and the reaction region was not locally cooled. Furthermore, the amount of coke used was reduced by 12% compared to the case of once producing synthetic rutile.
また、上記実施例において、選択塩素他炉から流動層形
成物を７０ｋｇ／Ｈｒの速度で抜き出し、３３０°Ｃの
温度に降温した段階で磁力選鉱により未反応イルメナイ
トを分離して選択塩素化炉内に戻した。残った反応イル
メナイトはＴｉＯ□分が９４．３％であった。そして残
った反応イルメナイトおよびコークスを四塩化チタン製
造用塩素他炉に投入した。塩素化炉に投入される段階で
の原料温度は２４０°Ｃであった。また、塩素化炉への
原料投入速度の内訳は、反応イルメナイ） ４６ ｋｇ
／Ｈｒ、コークス６、５ ｋｇ／Ｈｒであった。この場
合も上記実施例と同程度の品質および経済性が確保され
た。In addition, in the above example, the fluidized bed formed material was extracted from the selective chlorination furnace at a rate of 70 kg/Hr, and when the temperature was lowered to 330°C, unreacted ilmenite was separated by magnetic separation and placed in the selective chlorination furnace. I returned it to . The remaining reacted ilmenite had a TiO□ content of 94.3%. The remaining reacted ilmenite and coke were then charged into a chlorine furnace for producing titanium tetrachloride. The temperature of the raw material at the stage of charging it into the chlorination furnace was 240°C. In addition, the breakdown of the raw material input rate to the chlorination furnace is 46 kg
/Hr, coke 6.5 kg/Hr. In this case as well, quality and economy comparable to those of the above embodiments were ensured.
以上の説明から明らかなように、本発明の四塩化チタン
の製造方法は、安価な低品位チタン含有鉱石を使用して
、しかも少量のコークスで低コストに四塩化チタンを製
造できる。また、熱経済性が極めて良く、この面からも
製造コストが引き下げられる。更に、品質も優れ、合成
ルチルを原料とする既存の四塩化チタン製造設備をその
まま使用できる利点もある。As is clear from the above description, the method for producing titanium tetrachloride of the present invention allows titanium tetrachloride to be produced at low cost using an inexpensive low-grade titanium-containing ore and using a small amount of coke. Furthermore, it has extremely good thermoeconomic efficiency, and from this aspect as well, manufacturing costs can be reduced. Furthermore, it has excellent quality and has the advantage that existing titanium tetrachloride production equipment that uses synthetic rutile as a raw material can be used as is.
第１図は本発明の四塩化チタン製造方法における代表的
プロセスを示すフローチャート、第２図（ａ）〜（Ｃ１
はその選択塩素他炉に付設されるガス凝縮系を示すフロ
ーチャート、第３図および第４図は従来の四塩化チタン
製造方法を示すフローチャートである。
第
１
図
第
図
第
図
租四Ｉ！＆１じナクノFIG. 1 is a flowchart showing a typical process in the method for producing titanium tetrachloride of the present invention, and FIG. 2(a) to (C1
1 is a flowchart showing a gas condensation system attached to the selective chlorine furnace, and FIGS. 3 and 4 are flowcharts showing a conventional method for producing titanium tetrachloride. 1 Figure 1 Figure 1 Tax I! &1ji Nakuno
Claims (1)
することによりチタン含有率が高められた高チタン含有
鉱石を、該高チタン含有鉱石に付随するコークスと共に
、常温まで冷却することなく加熱状態のまま四塩化チタ
ン製造用塩素化炉内に装入することを特徴とする四塩化
チタン製造方法。(1) Selectively chlorinate low-grade titanium-containing ore in a chlorination furnace to increase the titanium content. A method for producing titanium tetrachloride, characterized by charging the titanium tetrachloride in a heated state into a chlorination furnace for producing titanium tetrachloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8519690A JPH03285820A (en) | 1990-03-30 | 1990-03-30 | Production of titanium tetrachloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8519690A JPH03285820A (en) | 1990-03-30 | 1990-03-30 | Production of titanium tetrachloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03285820A true JPH03285820A (en) | 1991-12-17 |
Family
ID=13851893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8519690A Pending JPH03285820A (en) | 1990-03-30 | 1990-03-30 | Production of titanium tetrachloride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03285820A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014136890A1 (en) * | 2013-03-06 | 2014-09-12 | 東邦チタニウム株式会社 | Method for treating titanium-containing feedstock |
-
1990
- 1990-03-30 JP JP8519690A patent/JPH03285820A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014136890A1 (en) * | 2013-03-06 | 2014-09-12 | 東邦チタニウム株式会社 | Method for treating titanium-containing feedstock |
| CN104619647A (en) * | 2013-03-06 | 2015-05-13 | 东邦钛株式会社 | Method for treating titanium-containing feedstock |
| JPWO2014136890A1 (en) * | 2013-03-06 | 2017-02-16 | 東邦チタニウム株式会社 | Method for processing titanium-containing raw materials |
| US9656879B2 (en) | 2013-03-06 | 2017-05-23 | Toho Titanium Co., Ltd. | Method for treating titanium-containing feedstock |
| RU2660029C2 (en) * | 2013-03-06 | 2018-07-04 | Тохо Титаниум Ко., Лтд. | Method for treating titanium-containing feedstock |
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