Fundamental Study on the Recovery of Functional Double Oxides from Slicing Dusts by Flotation Method

浮选法从切片粉尘中回收功能性双氧化物的基础研究

• 批准号: 02650446
• 负责人: MATSUOKA Isao
• 金额: $ 1.47万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02650446/
• 关键词: Gadolinium gallium garnet; Yttrium aluminum garnet; Lithium niobate; Slicing dusts; Flotation; Recycling; GGG研削屑; 機能性複合酸化物; 資源リサイクリング; 浮選分離; アミン浮選

In order to recover functional double oxides from slicing dusts, flotation of gadolinium gallium garnet(GGG), yttrium aluminum garnet(YAG)or lithium niobate(LN)from green carborundum(GC)has been investigated, using dodecylammonium acetate(DAA)as a collector. The results obtained are as follows :(1)The isoelectric points of GGG, YAG and LN exist at pH 7.3, 7.5 and 2.8, respectively.(2)The floatability of GGG or YAG is high in the alkaline pH range where the surf ace of GGG or YAG is negatively charged and low in the acidic pH range where the surface is positively charged. However, the floatability in the acidic pH range is enhanced in the presence of sulfate or oxalate ions which are specifically adsorbed on the surface, resulting in the increase of DAA adsorption.(3)Although the floatability of GC is high in the wide pH range, it is remarkably depressed in the presence of corn starch in the acidic pH range.(4)GGG or YAG can be selectively floated from GC at pH below 2 by using sulfuric acid or oxalic acid as an activator and corn starch as a depressor.(5)The floatability of LN is low in the acidic pH range in the presence of multivalent anions, sulfate or oxalate ions, but it is enhanced by adding fluoride ions.(6)LN can be selectively floated from GC in the pH range of 2 to 4 in the presence of potassium fluoride and corn starch.

为了从切片粉尘中回收功能性双氧化物，以十二烷基乙酸铵(DAA)为捕收剂，研究了从绿色碳化硅(GC)中浮选镓镓石榴石(GGG)、铝榴石(YAG)或铌酸锂(LN)的工艺。结果表明：(1)GGG、YPG和LN的等电点分别在pH 7.3、7.5和2.8.(2)GGG或YPG表面带负电的碱性pH区浮选性能较好，而带正电的酸性pH区浮选性能较差。在酸性pH范围内，尽管GC的可浮性在较宽的pH范围内很高，但在酸性pH范围内，玉米淀粉的存在显著抑制了GC的浮选。(4)在pH低于2的条件下，以硫酸或草酸为活化剂，以玉米淀粉为抑制剂，可以选择性地从GC中浮选GGG或YAG。(5)在酸性pH范围内，多价阴离子或草酸离子存在时，LN的可浮性较低。在氟化钾和玉米淀粉存在下，在pH为2~4的范围内，GC可以选择性地从GC中浮选LN。

项目成果

谷 峰,松岡 功,真宮 三男: "研削屑からのガドリニウム・ガリウム・ガ-ネットの浮選による回収に関する基礎的研究" 資源と素材.

Mine Tani、Isao Matsuoka、Mitsuo Mamiya：“通过浮选从研磨废物中回收钆、镓和石榴石的基础研究”资源和材料。

谷 峰,松岡 功: "浮選法によるイットリウム・アルミニウム・ガ-ネット研削屑の回収" 資源・素材学会平成3年度春季大会講演要旨集. 413-414 (1991)

Mine Tani、Isao Matsuoka：“通过浮选法回收钇、铝和石榴石研磨废物”日本自然资源和材料学会 1991 年春季会议记录 413-414 (1991)。

Feng Gu and Isao Matsuoka: "Recovery of Yttrium Aluminum Garnet Slicing Dust by Flotation Method" Proceedings of Spring Meeting of the Mining and Materials Processing Institute of Japan. (1991)

谷丰、松冈功：《浮选法回收钇铝石榴石切片粉尘》日本采矿与材料加工研究所春季会议论文集。

谷 峰,松岡 功,真宮 三男: "研削屑からのガドリニウム・ガリウム・ガ-ネットの浮選による回収に関する基礎的研究" 資源と素材. 107. 289-293 (1991)

Mine Tani、Isao Matsuoka、Mitsuo Mamiya：“通过浮选从研磨废物中回收钆、镓和石榴石的基础研究”资源和材料 107. 289-293 (1991)。

Feng Gu and Isao Matsuoka: "Recovery of Lithium Niobate by Flotation Method" Spring Meeting of the Mining and Materials Processing Institute of Japan. (1992)

谷丰、松冈功：“浮选法回收铌酸锂”日本采矿与材料加工研究所春季会议。