JPH0313532A - Method for recovering platinum family metal - Google Patents
Method for recovering platinum family metalInfo
- Publication number
- JPH0313532A JPH0313532A JP1145601A JP14560189A JPH0313532A JP H0313532 A JPH0313532 A JP H0313532A JP 1145601 A JP1145601 A JP 1145601A JP 14560189 A JP14560189 A JP 14560189A JP H0313532 A JPH0313532 A JP H0313532A
- Authority
- JP
- Japan
- Prior art keywords
- family metal
- platinum group
- chloride
- oxide
- waste catalyst
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 17
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims description 16
- 229910052697 platinum Inorganic materials 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 150000001805 chlorine compounds Chemical class 0.000 claims abstract description 4
- -1 platinum group metals Chemical class 0.000 claims description 19
- 239000010953 base metal Substances 0.000 claims description 18
- 229910044991 metal oxide Inorganic materials 0.000 claims description 16
- 150000004706 metal oxides Chemical class 0.000 claims description 16
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 22
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 239000000460 chlorine Substances 0.000 abstract description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003054 catalyst Substances 0.000 abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 abstract description 10
- 239000000377 silicon dioxide Substances 0.000 abstract description 10
- 239000011324 bead Substances 0.000 abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000004576 sand Substances 0.000 abstract description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 238000011084 recovery Methods 0.000 description 12
- 238000005660 chlorination reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052703 rhodium Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- ZTHNOZQGTXKVNZ-UHFFFAOYSA-L dichloroaluminum Chemical compound Cl[Al]Cl ZTHNOZQGTXKVNZ-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000006263 metalation reaction Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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、白金族金属および／又はその酸化物と基体金
属酸化物を含む回収物を加熱しながら塩素ガスを循環さ
せ流すことにより白金族金属および／又はその酸化物を
塩化物に変えて揮発させるとともに、少量反応する基体
金属酸化物の塩化を抑制しながら基体金属酸化物より分
離することによる白金族の回収方法に係る。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides a method for treating platinum group metals by circulating and flowing chlorine gas while heating a recovered product containing platinum group metals and/or their oxides and base metal oxides. The present invention relates to a method for recovering platinum group metals by converting metals and/or their oxides into chlorides and volatilizing them, and separating them from the base metal oxides while suppressing chlorification of the base metal oxides that react in small amounts.
（従来技術とその問題点）
従来よりアルミナ、シリカ、シルコニ子等の金属酸化物
基体上に白金族金属および／又はその酸化物を担持した
触媒が、自動車排ガスの浄化、電解電極、石油化学工業
用等に大量に使用されている。(Prior art and its problems) Catalysts in which platinum group metals and/or their oxides are supported on metal oxide substrates such as alumina, silica, and silconium have been used in the purification of automobile exhaust gas, electrolytic electrodes, and petrochemical industries. It is used in large quantities for various purposes.
このような触媒は、使用中に白金族の活性が低下し、一
定の性能を維持できなくなった際には、新しい触媒に取
り替える必要がある。こうした使用済の材料中には、な
お相当量の高価な白金族が残存し、これを回収し有効利
用することは工業上重要である。When the platinum group activity of such a catalyst decreases during use and a certain level of performance cannot be maintained, it is necessary to replace it with a new catalyst. A considerable amount of expensive platinum group metals still remain in these used materials, and it is industrially important to recover and utilize them effectively.
従来、白金族の回収方法としては、酸、王水などの溶解
法があるが、これらの方法は、溶解工程において長時間
の多投湿式処理を要する。Conventionally, methods for recovering platinum group metals include dissolving them using acids, aqua regia, etc., but these methods require a long-time, multi-humidity treatment in the dissolving process.
また基体金属を分離する際、基体金属水酸化物が析出す
るなどの問題があり、甚だ回収効率が悪く工業的には不
適な回収方法であった。Furthermore, when separating the base metal, there were problems such as the precipitation of base metal hydroxide, and the recovery efficiency was extremely low, making the recovery method unsuitable for industrial use.
他に回収物を加熱しながら塩素ガスを流す方法があるが
、回収物中の基体金属酸化物が塩化反応により揮発し、
白金族金属の塩化物中に混入し、基体金属酸化物と白金
族金属との分離が不十分であった。Another method is to flow chlorine gas while heating the recovered material, but the base metal oxide in the recovered material volatilizes due to the chlorination reaction.
It was mixed into the chloride of the platinum group metal, and separation of the base metal oxide and the platinum group metal was insufficient.
（発明の目的）
本発明は、上記の問題点を解決すべくなされたものであ
り、その目的は基体金属酸化物に白金族金属および／又
はその酸化物を保持せしめた材料より白金族を簡便且つ
効率良く回収する方法を提供せんとするものである。(Object of the Invention) The present invention was made to solve the above-mentioned problems, and its purpose is to make it easier to use platinum group metals and/or their oxides than materials in which the base metal oxide holds platinum group metals and/or their oxides. Moreover, it is an object of the present invention to provide a method for efficiently collecting the waste.
（問題を解決するための手段）
上記問題を解決するための本発明の白金族の回収方法は
、白金族金属および／又はその酸化物と基体金属酸化物
を含む回収物を加熱しながら塩素ガスを循環させ流すこ
とにより、白金族金属および／又はその酸化物を塩化物
に変えて揮発させるとともに、夕景反応する基体金属酸
化物の塩化を抑制しながら基体金属酸化物より分離する
ことを特徴とするものである。(Means for Solving the Problems) In order to solve the above problems, the method for recovering platinum group metals of the present invention involves heating a recovered material containing platinum group metals and/or their oxides and base metal oxides while gassing them with chlorine gas. By circulating and flowing platinum group metals and/or their oxides, the platinum group metals and/or their oxides are converted into chlorides and volatilized, and are separated from the base metal oxides while suppressing the chlorification of the base metal oxides that undergo sunset reaction. It is something to do.
基体金属酸化物に白金族を保持せしめた材料を加熱しな
がら塩素ガスを流すと、γ−アルミナの場合は、
Ａβ２０３＋３ｃｎ２ −２Ａｊ２Ｃβ、 ＋３／２
０２の反応式により少量のＡｌＣｌ２が生成する。When chlorine gas is flowed while heating a material in which a platinum group metal is held in the base metal oxide, in the case of γ-alumina, Aβ203+3cn2 -2Aj2Cβ, +3/2
A small amount of AlCl2 is produced by the reaction equation 02.
Ｔｉ分２の場合は
ＴｉＯ□＋２（１２すＴ ｉ Ｃｊｌ’ ４ ＋０２の
反応。If Ti is 2, the reaction is TiO□+2 (12S T i Cjl' 4 +02).
式により少量のＴ ｉＣｊ２４が生成する。A small amount of T iCj24 is generated by the formula.
塩素ガス循環により塩素ガスを流した場合は、塩素ガス
中に上記反応で生成した酸素ガスが混ざって来る為、上
記の基体金属酸化物の塩化反応が進行しなくなる。When chlorine gas is passed through chlorine gas circulation, the oxygen gas generated in the above reaction is mixed into the chlorine gas, so that the chlorination reaction of the base metal oxide does not proceed.
塩素中に酸素ガスが混ざって来ても一般的な基体金属は
酸素との反応性が白金族に比べ大幅に強い為、塩素中の
酸素量が微量であり、白金族の塩化揮発に悪影響を及ぼ
すまでには至らない。Even if oxygen gas is mixed into chlorine, the reactivity of common base metals with oxygen is much stronger than that of platinum group metals, so the amount of oxygen in chlorine is very small and has a negative effect on the chloride volatilization of platinum group metals. It does not reach the point where it has a negative impact.
反応は６００℃以上、１２００℃以下が望ましい。The reaction temperature is preferably 600°C or higher and 1200°C or lower.
６００℃以下では白金族の塩化ならびに揮発効率が低い
為で１２００℃以上では白金族塩化物の解離により揮発
効率が低下する為である。This is because the chlorination and volatilization efficiency of platinum group metals is low at temperatures below 600°C, and the volatilization efficiency decreases due to dissociation of platinum group chlorides at temperatures above 1200°C.
（実施例） 本発明の白金族回収方法の実施例と従来例を説明する。(Example) Examples and conventional examples of the platinum group recovery method of the present invention will be described.
先ず本発明の白金族回収方法の実施例について説明する
。First, an example of the platinum group recovery method of the present invention will be described.
（１）コーディエライトのハニカム担体に、触媒活性層
をこの担体に対して９．８ｗｔ％保持したものにＰｔＯ
，０５９％、Ｐｄ０．０５２％、Ｒｈ０．０２８％を担
持した自動車排ガス浄化用触媒を粉砕してフルイを使っ
て４２０〜２１０μｍの粒度のものを分けた。(1) A PtO
, 0.059% of Pd, 0.052% of Pd, and 0.028% of Rh were pulverized and separated into particles with a particle size of 420 to 210 μm using a sieve.
この触媒３００ｇを図に示す如く反応管（内管）２に充
填した。反応管（内管）２は下方から順にガス加熱用シ
リカサンド５、塩素ガス分散板としての多孔質セラミッ
クス４、セラミックフィルター３を有する構造になって
いる。これを反応器にセットし、排気バルブ９を開き、
塩素導入バルブ１０を開き流量調整バルブ１１により流
量計１３が４１！／＋＋＋ｉｎを示すようにし５ｍ１ｎ
間パージし、系内を塩素雰囲気にした。300 g of this catalyst was filled into a reaction tube (inner tube) 2 as shown in the figure. The reaction tube (inner tube) 2 has a structure including, in order from the bottom, a silica sand 5 for gas heating, a porous ceramic 4 as a chlorine gas dispersion plate, and a ceramic filter 3. Set this in the reactor, open the exhaust valve 9,
Open the chlorine introduction valve 10 and use the flow rate adjustment valve 11 to read the flow meter 13 at 41! 5m1n to indicate /+++in
The system was purged to create a chlorine atmosphere.
その後塩素循環用ポンプ１２を動かしながら電気炉６に
より１０００℃まで加熱した。加熱の際は圧力計１４が
常に＋０．３ｋｇ／ｃｍになるように排気バルブ９によ
り調整した。Thereafter, it was heated to 1000° C. in the electric furnace 6 while operating the chlorine circulation pump 12. During heating, the exhaust valve 9 was adjusted so that the pressure gauge 14 was always +0.3 kg/cm.
また反応中も常に圧力計１４が＋０．３ｋｇ／ｃｊにな
るように塩素導入バルブ１０により調整を行った。Further, during the reaction, the pressure gauge 14 was always adjusted to +0.3 kg/cj using the chlorine introduction valve 10.
流量調整バルブ１１により流量計を４１／ｍｉｎに調整
し、この反応を行った。反応ガスは、シリカビーズ７を
充填した冷却管８を通し、凝縮物を集めたこの反応を３
時間行った後、シリカビーズ７を取り出し、塩酸３Ｎ液
に溶解し、ｐＨ２に調整後、Ｈ，Ｓで白金族を硫化物と
して沈澱させ回収したところＰｔ、Ｐｄ、Ｒｈの回収率
はそれぞれ９５．３％、９５．０％、８７．６％で塩酸
溶液中の分析によって得たアルミナの揮発量は全量に対
して１．６％であった。This reaction was carried out by adjusting the flow rate to 41/min using the flow rate adjustment valve 11. The reaction gas is passed through a cooling tube 8 filled with silica beads 7 to collect the condensate.
After this time, the silica beads 7 were taken out, dissolved in 3N hydrochloric acid solution, adjusted to pH 2, and recovered by precipitating the platinum group as sulfides with H and S. The recovery rates of Pt, Pd, and Rh were 95. The volatilization amount of alumina obtained by analysis in a hydrochloric acid solution at 3%, 95.0%, and 87.6% was 1.6% based on the total amount.
（２）チタニアにＲｕＯ７を５．０１％含む海水電解用
電極剥離物を４２０〜２１０μｍに粒度調整し、この回
収物４００ｇを実施例１と同様の手順で塩化反応を行っ
た。(2) The particle size of a peeled electrode for seawater electrolysis containing 5.01% RuO7 in titania was adjusted to 420 to 210 μm, and 400 g of this recovered material was subjected to a chlorination reaction in the same manner as in Example 1.
反応中の塩素滝壷は６１／ｍｉｎで行った。The chlorine water flow rate during the reaction was 61/min.
３時間反応後、反応管（内管）２をはずしシリカビーズ
部を塩酸３Ｎ液で充分に洗浄し、液を取り出しＴｉ分の
分析を行ったところ、Ｔｉの揮発量は全量に対して２．
６％であった。After 3 hours of reaction, the reaction tube (inner tube) 2 was removed, the silica beads were thoroughly washed with 3N hydrochloric acid solution, and the liquid was taken out and analyzed for Ti. The amount of volatile Ti was 2.5% of the total amount.
It was 6%.
またシリカビーズは液は分別後、水素還元を行いＮａＣ
ＡＯ−ＮａＯＨ液に溶かし、そこにＣＲ２を吹き込みル
テニウムを四酸化物（Ｒｕｂ、）として揮発させ塩酸で
捕集する方法で回収したところ回収率は９５．６％であ
った。In addition, after the silica beads are separated, hydrogen reduction is performed to remove NaC.
Ruthenium was recovered by dissolving it in an AO-NaOH solution, blowing CR2 into it, volatilizing the ruthenium as tetroxide (Rub), and collecting it with hydrochloric acid. The recovery rate was 95.6%.
（従来例）
（１）実施例（１）で使用したものと同じ触媒を塩素循
環させずに同条件でテストしたところ、Ｐｔ。(Conventional example) (1) When the same catalyst used in Example (1) was tested under the same conditions without chlorine circulation, Pt was detected.
Ｐｄ、Ｒｈの回収率はそれぞれ９５．０％、９５．３％
、８７．４％でアルミナの揮発量は全量に対して４．３
％であった。Recovery rates of Pd and Rh were 95.0% and 95.3%, respectively.
, 87.4%, and the amount of alumina volatilized is 4.3 relative to the total amount.
%Met.
（２）実施例（２）で使用したものと同じ電極剥離物を
塩素循環させずに同条件でテストしたところ、Ｒｕの回
収率は９５．８％であり、Ｔｉの揮発量は全量に対して
７．２％であった。(2) When the same electrode peeled material used in Example (2) was tested under the same conditions without chlorine circulation, the recovery rate of Ru was 95.8%, and the amount of Ti volatilization was relative to the total amount. It was 7.2%.
（３）従来例（１）で使用したものと同じ触媒を５、２
８０．２５ ｇ塩酸６Ｎ溶液に浸漬し、これを６０℃に
加熱し、そこに塩素ガスを吹き込み白金族を溶解した。(3) The same catalyst used in conventional example (1) was used at 5, 2
It was immersed in 80.25 g of 6N hydrochloric acid solution, heated to 60°C, and chlorine gas was blown into it to dissolve the platinum group metal.
この反応を４時間行った後、濾過により塩酸液を取り出
しＨ２Ｓで白金族を硫化物として沈澱させる方法で回収
したところ、Ｐｔ、Ｐｄ、Ｒｈの回収率はそれぞれ９３
．１％、９４．３％、８０．２％であった。After this reaction was carried out for 4 hours, the hydrochloric acid solution was taken out by filtration and recovered by a method of precipitating the platinum group as sulfide with H2S, and the recovery rate of Pt, Pd, and Rh was 93% each.
．． They were 1%, 94.3%, and 80.2%.
この回収において回収率を高くする為、濾過の際の洗浄
液で液量が大幅に増えるという問題が生じた。In order to increase the recovery rate in this recovery, a problem arose in that the amount of washing liquid used during filtration increased significantly.
（発明の効果）
以上の説明で判るように本発明の方法によれば、白金族
を基体金属酸化物から極めて効率良く分離回収すること
ができ、また従来法に比べ基体金属酸化物の生成が抑制
されることや、湿式法に対しては濾過、洗浄工程を必要
としないので、簡便に短時間に回収できるという優れた
効果がある。(Effects of the Invention) As can be seen from the above explanation, according to the method of the present invention, platinum group metals can be separated and recovered from the base metal oxide very efficiently, and the generation of the base metal oxide is reduced compared to the conventional method. Since the wet method does not require filtration or washing steps, it has the excellent effect of being able to be easily recovered in a short time.
図は本発明の白金族の回収方法の実施例を示す図である
。The figure shows an example of the platinum group metal recovery method of the present invention.
Claims (1)
物を含む回収物を６００〜１２００℃に加熱しながら、
塩素ガスを循環させ流すことにより、白金族金属および
／又はその酸化物を塩化物に変えて揮発させ、基体金属
酸化物と分離し、回収することを特徴とする白金族の回
収方法。1. While heating the recovered material containing the platinum group metal and/or its oxide and the base metal oxide to 600 to 1200°C,
A method for recovering platinum group metals, which comprises circulating and flowing chlorine gas to convert platinum group metals and/or their oxides into chlorides, volatilize them, separate them from base metal oxides, and recover them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1145601A JPH0313532A (en) | 1989-06-08 | 1989-06-08 | Method for recovering platinum family metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1145601A JPH0313532A (en) | 1989-06-08 | 1989-06-08 | Method for recovering platinum family metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0313532A true JPH0313532A (en) | 1991-01-22 |
Family
ID=15388833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1145601A Pending JPH0313532A (en) | 1989-06-08 | 1989-06-08 | Method for recovering platinum family metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0313532A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6626978B1 (en) * | 1994-12-01 | 2003-09-30 | Prior Engineering Ag | Method for dressing materials |
| JP2017521557A (en) * | 2014-06-19 | 2017-08-03 | イエダ リサーチ アンド ディベロップメント カンパニー リミテッド | Method for recovering platinum group metals from spent catalyst |
| US11473168B2 (en) | 2016-10-30 | 2022-10-18 | Yeda Research And Development Co. Ltd. | Method for platinum group metals recovery from spent catalysts |
| WO2023106244A1 (en) * | 2021-12-06 | 2023-06-15 | セントラル硝子株式会社 | Platinum group element resource recovery device, film formation system, platinum group element resource recovery tube, and platinum group element resource recovery method |
-
1989
- 1989-06-08 JP JP1145601A patent/JPH0313532A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6626978B1 (en) * | 1994-12-01 | 2003-09-30 | Prior Engineering Ag | Method for dressing materials |
| JP2017521557A (en) * | 2014-06-19 | 2017-08-03 | イエダ リサーチ アンド ディベロップメント カンパニー リミテッド | Method for recovering platinum group metals from spent catalyst |
| US10457999B2 (en) | 2014-06-19 | 2019-10-29 | Yeda Research And Development Co. Ltd. | Method for platinum group metals recovery from spent catalysts |
| US11898220B2 (en) | 2014-06-19 | 2024-02-13 | Yeda Research And Development Co. Ltd. | Apparatus for platinum group metals recovery from spent catalysts |
| US11473168B2 (en) | 2016-10-30 | 2022-10-18 | Yeda Research And Development Co. Ltd. | Method for platinum group metals recovery from spent catalysts |
| WO2023106244A1 (en) * | 2021-12-06 | 2023-06-15 | セントラル硝子株式会社 | Platinum group element resource recovery device, film formation system, platinum group element resource recovery tube, and platinum group element resource recovery method |
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