JPH02159324A - Method for recovering metallic material coating iron-based alloy material - Google Patents
Method for recovering metallic material coating iron-based alloy materialInfo
- Publication number
- JPH02159324A JPH02159324A JP63313953A JP31395388A JPH02159324A JP H02159324 A JPH02159324 A JP H02159324A JP 63313953 A JP63313953 A JP 63313953A JP 31395388 A JP31395388 A JP 31395388A JP H02159324 A JPH02159324 A JP H02159324A
- Authority
- JP
- Japan
- Prior art keywords
- based alloy
- iron
- copper
- alloy material
- silver
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000000956 alloy Substances 0.000 title claims abstract description 39
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 35
- 239000007769 metal material Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 title claims abstract description 7
- 238000000576 coating method Methods 0.000 title claims abstract description 7
- 229910052709 silver Inorganic materials 0.000 claims abstract description 25
- 239000004332 silver Substances 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052802 copper Inorganic materials 0.000 claims abstract description 22
- 239000010949 copper Substances 0.000 claims abstract description 22
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052718 tin Inorganic materials 0.000 claims abstract description 20
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000679 solder Inorganic materials 0.000 claims abstract description 16
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims abstract description 15
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011135 tin Substances 0.000 claims abstract description 10
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 8
- 238000007654 immersion Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 150000002739 metals Chemical class 0.000 abstract description 6
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 17
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 6
- 229910001431 copper ion Inorganic materials 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 229910021607 Silver chloride Inorganic materials 0.000 description 3
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 iron ions Chemical class 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 238000004445 quantitative analysis Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- PQIJHIWFHSVPMH-UHFFFAOYSA-N [Cu].[Ag].[Sn] Chemical compound [Cu].[Ag].[Sn] PQIJHIWFHSVPMH-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 229910000833 kovar Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000003440 toxic substance Substances 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電子工業材料として多用されている鉄基合金
素材上にめっき法或いは浸漬方法等に依って被覆された
銀、銅、スズ及び半田等の金属材料を溶解剥離し、鉄基
合金素材を再利用できるようになすと共に有用金属を回
収する方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to silver, copper, tin, and other metals coated by plating or dipping on iron-based alloy materials that are frequently used as materials for the electronic industry. The present invention relates to a method for melting and peeling metal materials such as solder, making it possible to reuse iron-based alloy materials, and recovering useful metals.
（従来の技術）
従来、電子工業材料として使用されている鉄基合金素材
上に被覆された銀、銅等の成分を回収する方法として種
々の方法が実施されている、■シアン化アルカリ水溶液
等のシアン系剥離液に浸漬する方法、■フッ化物を使用
したアルカリ系電気分解法、■鉄基合金素材の廃材を粉
砕、分級、分離機にかけて有用金属材料を分離する操作
等が行われている。(Prior art) Various methods have been used to recover components such as silver and copper coated on iron-based alloy materials used as materials for the electronic industry. Methods such as immersion in cyanide-based stripping solution, alkaline electrolysis using fluoride, and operations to separate useful metal materials by crushing, classifying, and separating iron-based alloy waste materials, etc. .
（発明が解決すべき問題点）
前記したシアン化アルカリ及びフッ化物を使用した剥離
回収方法に於ては、使用するシアン化アルカリやフッ化
物が有毒物質であるため特定の作業施設を設けた工場を
必要とするため、工場の立地条件等その選定が非常に厳
しくまた処理使用済みのシアン化アリカリ及びフッ化物
は産業廃棄物として処理処分するものであるが、環境汚
染のないように無毒化処理し、廃棄処分するためには多
大の手間と時間を要し、経費アップ要因となっている。(Problems to be Solved by the Invention) In the above-mentioned peeling and recovery method using alkali cyanide and fluoride, since the alkali cyanide and fluoride used are toxic substances, factories with specific working facilities are required. Because of this, the selection of factory locations is very strict, and used alkali cyanide and fluoride are treated and disposed of as industrial waste, but they must be detoxified to avoid environmental pollution. However, it takes a lot of time and effort to dispose of the waste, which increases costs.
更にまた粉砕、分級、分離する方法於ては、粉砕、分級
、分離のそれぞれに多大のエネルギーを必要とし、過大
の設備と動力を浪費した。Furthermore, in the method of crushing, classifying, and separating, a large amount of energy is required for each of crushing, classification, and separation, and excessive equipment and power are wasted.
本発明者等は上述の如き従来技術の欠点を解消すべく鋭
意研究の結果、銅−銀等の金属材料が被覆された鉄基合
金素材を硝酸第二鉄、硝酸第二コバルト、硝酸第二銅等
の水溶液に浸漬することにより鉄基合金素材上の銅−銀
等の被覆物が極めて容易に溶解剥離することを知見して
本発明に到達した。As a result of intensive research in order to eliminate the drawbacks of the prior art as described above, the present inventors have developed iron-based alloy materials coated with metal materials such as copper-silver, ferric nitrate, cobalt nitrate, and ferric nitrate. The present invention was achieved based on the finding that a copper-silver coating on an iron-based alloy material is extremely easily dissolved and peeled off by immersion in an aqueous solution of copper or the like.
（問題点を解決するための手段）
すなわち本発明は、金属材料の被膜を有する鉄基合金素
材を硝酸第二コバルト、硝酸第二銅及び硝酸第二鉄から
採択される１種又は２種以上を含有する剥離溶液に浸漬
することを特徴とする鉄基合金素材に被覆された金属材
料の回収方法である。(Means for Solving the Problems) That is, the present invention provides an iron-based alloy material having a coating of a metal material using one or more selected from cobalt (II) nitrate, cupric nitrate, and ferric nitrate. This is a method for recovering metal materials coated on iron-based alloy materials, the method comprising immersing them in a stripping solution containing iron-based alloy materials.
以下、本発明を更に具体的に説明する。The present invention will be explained in more detail below.
本発明でいう鉄基合金素材とは、
Ｆｅ−Ｎｉ合金（Ｎｉ ４２％） 、Ｆｅ−Ｎｉ合金（
Ｎｉ ５２％）、ステンレス、コバール等である。The iron-based alloy material referred to in the present invention includes Fe-Ni alloy (42% Ni), Fe-Ni alloy (
Ni 52%), stainless steel, Kovar, etc.
またこの鉄基合金素材上に被覆されている金属材料とは
例えば銅−銀、銅−半田、銅−スズ、銅−眼一半田、銅
−銀−スズ、銅、銀、半田等が挙げられる。The metal materials coated on this iron-based alloy material include, for example, copper-silver, copper-solder, copper-tin, copper-eye solder, copper-silver-tin, copper, silver, and solder. .
本発明の特徴とするところは、前記の金属材料を硝酸第
二鉄、硝酸第二コバルト、硝酸第二銅等の硝酸塩の単独
若しくは２種以上の配合物を水に溶解した剥離溶液によ
って剥離するものであるが、これらの硝酸塩は８ ｇ
／ １−１０００ｇ／ｌの水溶液として使用される。The present invention is characterized in that the above-mentioned metal materials are stripped using a stripping solution in which one or a mixture of two or more of nitrates such as ferric nitrate, cobalt nitrate, cupric nitrate, etc. is dissolved in water. However, these nitrates are 8 g
/ Used as an aqueous solution of 1-1000 g/l.
８ｇ／２以下の水溶液では剥離効果が十分でなく、また
１０００ｇ／ｆ以上であっても剥離効果は平行状態にあ
るためコスト面からみて好ましくない。If the aqueous solution is 8 g/f or less, the peeling effect will not be sufficient, and even if it is 1000 g/f or more, the peeling effect will be in a parallel state, which is not preferable from a cost standpoint.
本発明に於て前記の剥離溶液に鉄基合金素材を浸漬し処
理する場合、剥離溶液を撹拌した状態で実施する方がよ
り効率である。更にまたこの剥離溶液にセラミックス等
のボール、チップ等を加え振動や衝撃を与えながら撹拌
を行うと溶解剥離時間を非常に短縮することができる。In the present invention, when treating the iron-based alloy material by immersing it in the stripping solution, it is more efficient to carry out the treatment while stirring the stripping solution. Furthermore, by adding ceramic balls, chips, etc. to this stripping solution and stirring while applying vibrations or shocks, the dissolution and stripping time can be greatly shortened.
本発明の金属材料の回収方法に於ては、硝酸第二鉄、硝
酸第二コバルト及び硝酸第二銅の三価の鉄イオン、コバ
ルトイオン及び銅イオンの酸化力を利用しているもので
あるが、これらの三価の金属イオンは鉄基合金素材上に
被覆されている銀、銅、スズ、半田等の金属材料を酸化
しイオン化する際、三価の金属イオンは二価に還元され
て剥離能力を失う。The method for recovering metal materials of the present invention utilizes the oxidizing power of trivalent iron ions, cobalt ions, and copper ions of ferric nitrate, cobalt (II) nitrate, and cupric nitrate. However, when these trivalent metal ions oxidize and ionize metal materials such as silver, copper, tin, and solder coated on iron-based alloy materials, trivalent metal ions are reduced to divalent ones. Loses peeling ability.
しかしながら、本発明では、剥離能力の低下した剥離溶
液中に過酸化水素、硝酸及びオゾン等の酸化剤を加える
ことによって二価の金属イオンを酸化して三価とするこ
とにより、剥離溶液を何度も繰り返し使用することが出
来る利点を有する。ただし剥離溶液中には溶解した銀、
銅、スズ、半田等が蓄積されてくるため、これを分離除
去する必要がある。However, in the present invention, divalent metal ions are oxidized to trivalent by adding an oxidizing agent such as hydrogen peroxide, nitric acid, and ozone to the stripping solution whose stripping ability has decreased. It has the advantage of being able to be used repeatedly. However, dissolved silver in the stripping solution,
Since copper, tin, solder, etc. accumulate, it is necessary to separate and remove them.
スズは箔状となっているから、濾別、分離し、再利用す
る。銀と鉛イオンは、塩素イオンを当量加えることによ
って水に不溶性の塩化銀と塩化鉛として沈澱、分離し銀
と鉛を回収する。Since tin is in the form of foil, it is filtered, separated, and reused. Silver and lead ions are precipitated and separated as water-insoluble silver chloride and lead chloride by adding an equivalent amount of chlorine ions, and the silver and lead are recovered.
残存する銅イオンは、第二鉄イオンと同様な酸化作用を
するので共存させ剥離助剤の役割をさせる。The remaining copper ions have the same oxidizing effect as ferric ions, so they are allowed to coexist and serve as a stripping aid.
銅イオンの飽和により、剥離能力が限界に達した溶液は
、濃縮し、結晶として採取し、再利用する。A solution whose stripping ability has reached its limit due to copper ion saturation is concentrated, collected as crystals, and reused.
以下、実施例により本発明を具体的に説明する。Hereinafter, the present invention will be specifically explained with reference to Examples.
実施例１
半田及び銅メツキの施された鉄基合金素材（４２％Ｎｉ
合金ＩＣリードフレーム、半田、制約２５％付着）上の
半田、銅の剥離。Example 1 Iron-based alloy material (42%Ni) with solder and copper plating
Peeling of solder and copper on alloy IC lead frame (solder, constraint 25% adhesion).
Ｓ Ｕ Ｓ製バレルに硝酸第二鉄の２８０ｇ／ｆ剥離用
水溶液を５００！入れ、この中に上記の鉄基合金素材１
００ｋｇとアルミナ細粒１０ｋｇを入れ常温で１２時間
回転、撹拌を行った後、ＳＵＳ製バレルを取り出し、水
洗後、鉄基合金素材中のスズ、鉛、銅を定量分析した結
果各々１１００ｐｐ以下であった。Add 280g/f aqueous solution of ferric nitrate to a SUS barrel for 500ml! Place the above iron-based alloy material 1 in it.
After 12 hours of rotation and stirring at room temperature, the SUS barrel was taken out, washed with water, and a quantitative analysis of tin, lead, and copper in the iron-based alloy material revealed that each was less than 1100 pp. Ta.
溶液中のスズは）別分離回収し、鉛イオンは、塩素イオ
ンを当量加え塩化鉛として回収した。Tin in the solution was separated and recovered, and lead ions were recovered as lead chloride by adding an equivalent amount of chlorine ions.
更に残存する銅イオンは、酸化作用をするため、剥離助
剤として飽和状態となるまで使用し、飽和により剥離溶
液が限界となった時点で溶液を濃縮して回収した。Furthermore, since the remaining copper ions have an oxidizing effect, they were used as a stripping aid until they reached a saturated state, and when the stripping solution reached its limit due to saturation, the solution was concentrated and recovered.
スズ、鉛を回収した剥離溶液は、３５％の硝酸１４２加
え撹拌混合し、酸化力を復活させ次の剥離に使用した。The stripping solution from which tin and lead were recovered was stirred and mixed with 35% nitric acid 142 to restore its oxidizing power and used for the next stripping.
実施例２
半田、銀、銅メツキの施された鉄基合金素材（４２％Ｎ
ｉ合金ＩＣＩＪ−ドフレーム、半田、銀、銅約３０％付
着）上の半田、銀、銅の剥離。Example 2 Iron-based alloy material (42%N) plated with solder, silver, and copper
Peeling of solder, silver, and copper on i-alloy ICIJ-dead frame (approximately 30% adhesion of solder, silver, and copper).
ＳＵＳ製バレルに実施例１で使用した剥離液５００！を
入れ、これに半田、銀、銅のメツキがされた前記の鉄基
合金素材１００ｋｇを入れ、常温で１２時間回転撹拌を
行った後、ＳＵＳ製バレルを取り出し、水洗後、鉄基合
金素材中のスズ、鉛、銀、銅を定量分析した結果、各々
１１００ｐｐ以下であった。Stripping liquid 500 used in Example 1 for the SUS barrel! 100 kg of the above-mentioned iron-based alloy material plated with solder, silver, and copper was added to this, and after rotational stirring at room temperature for 12 hours, the SUS barrel was taken out, and after washing with water, the iron-based alloy material was placed in the iron-based alloy material. As a result of quantitative analysis of tin, lead, silver, and copper, each was 1100 pp or less.
溶液中のスズ、鉛は実施例１と同様にして回収し、銀は
鉛と同様に塩化銀として回収、銅イオンは剥離助剤とし
て飽和状態となるまで活用した。スズ、鉛、銀を回収し
た剥離溶液は、３６％の過酸化水素水１８ｆ加え撹拌混
合し、酸化力を復活させ次の剥離に使用した。Tin and lead in the solution were recovered in the same manner as in Example 1, silver was recovered as silver chloride in the same way as lead, and copper ions were used as a stripping aid until saturated. To the stripping solution in which tin, lead, and silver were recovered, 18 f of 36% hydrogen peroxide solution was added and mixed with stirring to restore the oxidizing power and used for the next stripping.
実施例３
スズ、銀、銅メツキの施された鉄基合金素材（４２％Ｎ
ｉ合金ＩＣＩＪ−ドフレーム、スズ、銀、制約２５％付
着）上のスズ、銀、銅の剥離。Example 3 Iron-based alloy material plated with tin, silver, and copper (42%N
Peeling of tin, silver, copper on i-alloy ICIJ-deframe, tin, silver, constraint 25% adhesion).
ＳＵＳ製バレルに実施例２で使用した剥離液５００１を
入れ、これにスズ、銀、銅のメツキがされた前記の鉄基
合金素材１００ｋｇを入れ、常温で１２時間回転撹拌を
行った後、ＳＵＳ製バレルを取り出し、水洗後、鉄基合
金素材中のスズ、銀、銅を定量分析した結果、各々１０
０ｐｐｎ＋以下であった。The stripping liquid 5001 used in Example 2 was put into a SUS barrel, and 100 kg of the above-mentioned iron-based alloy material plated with tin, silver, and copper was put therein, and after rotary stirring at room temperature for 12 hours, the SUS After removing the barrel and washing it with water, quantitative analysis of tin, silver, and copper in the iron-based alloy material revealed that each
It was 0 ppn+ or less.
溶液中のスズは実施例２と同様にして回収し、銀は塩化
銀として回収、銅イオンは剥離助剤として飽和状態とな
るまで活用した。Tin in the solution was recovered in the same manner as in Example 2, silver was recovered as silver chloride, and copper ions were used as a stripping aid until saturated.
スズ、銀を回収した剥離溶液は、エアーレーションを１
２時間行って酸化力を復活させ次の剥離に使用した。The stripping solution that recovered tin and silver should be aerated to 1
The oxidizing power was restored for 2 hours and used for the next peeling.
（発明の効果）
本発明の鉄基合金素材に被覆された金属材料の回収方法
は、シアン化アリカリやフッ化物を使用してないため、
無毒化処理の必要がな（環境汚染の心配がない。また剥
離再生した鉄基台金素材は、残存する銅、銀、スズ、半
田等の金属の合計量が１１００ｐｐ以下となり、従来法
と比較して同等以上で再生材料として充分使用すること
ができる。(Effects of the Invention) Since the method for recovering the metal material coated on the iron-based alloy material of the present invention does not use alkali cyanide or fluoride,
There is no need for detoxification treatment (there is no need to worry about environmental pollution. Also, the total amount of residual metals such as copper, silver, tin, and solder is less than 1100pp in the stripped and recycled iron base metal material, compared to conventional methods. It can be used as a recycled material if it is equivalent or higher.
また回収した銅や銀等の有用金属を効率よく回収するこ
とが出来るので廃材の活用に極めて有効である。In addition, since useful metals such as copper and silver can be efficiently recovered, it is extremely effective in utilizing waste materials.
Claims (3)
コバルト、硝酸第二銅及び硝酸第二鉄から採択される１
種又は２種以上を含有する剥離溶液に浸漬することを特
徴とする鉄基合金素材に被覆された金属材料の回収方法
。(1) An iron-based alloy material with a coating of metal material selected from cobalt (II) nitrate, cupric nitrate, and ferric nitrate (1)
A method for recovering a metal material coated on an iron-based alloy material, the method comprising immersing a metal material coated on an iron-based alloy material in a stripping solution containing one or more species.
る請求項１記載の鉄基合金素材に被覆された金属材料の
回収方法。(2) The method for recovering a metal material coated on an iron-based alloy material according to claim 1, wherein the coated metal material is silver, copper, tin, or solder.
１記載の鉄基合金素材に被覆された金属材料の回収方法
。(3) A method for recovering a metal material coated on an iron-based alloy material according to claim 1, wherein the immersion in the stripping solution is performed under the impact of a ball mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63313953A JPH02159324A (en) | 1988-12-14 | 1988-12-14 | Method for recovering metallic material coating iron-based alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63313953A JPH02159324A (en) | 1988-12-14 | 1988-12-14 | Method for recovering metallic material coating iron-based alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02159324A true JPH02159324A (en) | 1990-06-19 |
Family
ID=18047482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63313953A Pending JPH02159324A (en) | 1988-12-14 | 1988-12-14 | Method for recovering metallic material coating iron-based alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02159324A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015221934A (en) * | 2013-12-25 | 2015-12-10 | 住友金属鉱山株式会社 | Silver recovery method |
| JP2016211020A (en) * | 2015-04-30 | 2016-12-15 | 大口電子株式会社 | Method for recovering noble metal |
-
1988
- 1988-12-14 JP JP63313953A patent/JPH02159324A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015221934A (en) * | 2013-12-25 | 2015-12-10 | 住友金属鉱山株式会社 | Silver recovery method |
| JP2016211020A (en) * | 2015-04-30 | 2016-12-15 | 大口電子株式会社 | Method for recovering noble metal |
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