亜臨界水熱処理による超硬合金からのＷＯ３の回収

• 笹井 亮

  名古屋大学エコトピア科学研究所

• 稲垣 文人

  名古屋大学エコトピア科学研究所

• 高 寧峰

  (独)産業技術総合研究所中部センター

• 伊藤 秀章

  名古屋大学エコトピア科学研究所

書誌事項

タイトル別名

• Resource Recovery from Cemented Carbide by Subcritical Hydrothermal Treatment
• アリンカイ スイネツ ショリ ニ ヨル チョウコウゴウキン カラ ノ WO3 ノ カイシュウ

抄録

To develop a novel recycling process of WC-Co cermet scraps, hydrothermal oxidation treatment of various WC-Co cutting tools was investigated. Four kinds of WC-Co chips were used as samples: the sample A contained 13% of Co and was fine-grained, the sample B contained a small amount of TaC (ca. 1.5%) in addition to 6% Co, and the samples C and D were coated chips on normal WC-Co substrates. The sample was enclosed in a high pressure container lined with polyfluorocarbon resin with an appropriate concentration of nitric acid in the presence and absence of fluoric acid. As a result, pure WO₃ powder was selectively recovered from all samples by the hydrothermal oxidation treatment in 7mol/dm³ HNO₃ and 2mol/dm³ HF mixed aqueous solution. Other elements such as Co, Ta, etc. were dissolved into the solvent. In conclusion, the present hydrothermal oxidation method was found to be one of the superior methods to recover W and Co resources from WC-Co cermet scraps.

収録刊行物

• 材料

  材料 55 (3), 254-257, 2006

  公益社団法人 日本材料学会

キーワード

• Cemented carbide
• WC-Co
• Resource recovery
• Subcritical water
• Hydrothermal oxidation, HF corrosion

詳細情報

• CRID: 1390282680395282816
• NII論文ID: 110006570908
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.55.254
• COI: 1:CAS:528:DC%2BD28XjsVOkurc%3D
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 7884745
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7884745
• 本文言語コード: ja
• データソース種別:
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