Mineralogical, geochemical, and petrological characterization of size-fractionated municipal solid waste incineration bottom ash (MSWIBA) from the perspective of precious and rare metal recovery

从贵金属和稀有金属回收的角度对城市固体废物焚烧底灰（MSWIBA）进行矿物学、地球化学和岩石学表征

• 批准号: 21K12312
• 负责人: サファルザデ アミルホマユン
• 金额: $ 2.58万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K12312/
• 关键词: Municipal Solid Waste; Incineration; Bottom ash residues; Dust Ash; Mineralogy; Metal recovery; Eco-friendly technology; Economic Assessment; Characterization study; Precious and rare metal

Incinerated ash contains incombustible materials such as minerals and glass, base metals such as copper and zinc, and precious metals such as gold and silver. If these can be recovered and reused, incinerator ash can be economically valuable and environmentally safe. However, many issues still remain regarding the detailed characterization of incinerator ash. Therefore, this study focused on metal recovery from incinerator ash. To evaluate the potential for metal recovery, air-dried bottom ash samples were collected from three incinerators in Japan. Large non-combustible materials (metals, glass, stones, etc.) were removed manually, and the remaining residue was divided into five particle sizes using 4mm, 2mm, 1mm, and 0.5mm sieves, and multiple analyses were performed on each fraction. Experimental methods included X-ray fluorescence (XRF) analysis, X-ray diffraction (XRF) analysis, optical microscopy, scanning electron microscopy, and standard leaching tests on each fraction to identify each phase of incinerator bottom ash in each fraction and determine its physical and chemical properties. Dust ash contains a higher percentage of lead, zinc, and copper than the main ash. Therefore, it was considered desirable to separate and recover the dust ash in order to recover these three metals. However, due to the small percentage of dust ash generated, it was considered more profitable to recover lead from the separated dust ash and zinc and copper from the incinerator ash (dust ash and main ash) without separating and recovering the dust ash.

燃烧的灰分含有不可强化的材料，例如矿物质和玻璃，铜和锌等碱金属，以及贵金属，例如金和银。如果可以回收和重复使用这些，则焚化炉在经济上可能是有价值的，并且在环境上是安全的。但是，关于焚化炉的详细表征仍然存在许多问题。因此，这项研究的重点是从焚化炉中恢复金属。为了评估金属恢复的潜力，从日本的三个焚化炉中收集了风干的底灰样品。手动去除大型非燃烧材料（金属，玻璃，石材等），并使用4mm，2mm，1mm和0.5mm的筛子将其余残留物分为五个粒径，并对每个分数进行多次分析。实验方法包括X射线荧光（XRF）分析，X射线衍射（XRF）分析，光学显微镜，扫描电子显微镜以及每个分数上的标准浸出测试，以识别每个分数中焚化炉底部灰分的每个阶段，并确定其物理和化学性质。与主灰相比，灰尘灰分含有更高的铅，锌和铜的百分比。因此，为了恢复这三种金属而分离和回收灰尘灰被认为是可取的。但是，由于产生的灰尘灰分所占的比例很小，因此从焚化炉（灰尘灰分和主灰）中恢复了从分离的灰尘和锌和铜中恢复铅而不分开和回收灰尘灰的铅。

项目成果

Characterization of the physical properties of incinerated ash from general waste for recovery of metals and rare metals by particle size

通过粒度表征用于回收金属和稀有金属的一般废物焚烧灰的物理性质

• 发表时间: 2022
• 作者: 高岡佑輔;藤林俊介;後藤公志;大槻文悟;河井利之;清水孝彬;奥津弥一郎;池田周正;織田和樹;池崎龍仁;本田新太郎;松田秀一;高岡佑輔;Ryugo Tanaka;Ryugo Tanaka;Amirhomayoun Saffarzadeh;Ryugo Tanaka
• 通讯作者: Ryugo Tanaka

Particle Size Characteristics and Examination of Methods for Metal Recovery from Municipal Waste Incineration Ash

城市垃圾焚烧灰中金属回收的粒度特征及方法检验

• 发表时间: 2023
• 作者: 高岡佑輔;藤林俊介;後藤公志;大槻文悟;河井利之;清水孝彬;奥津弥一郎;池田周正;織田和樹;池崎龍仁;本田新太郎;松田秀一;高岡佑輔;Ryugo Tanaka
• 通讯作者: Ryugo Tanaka

Physicochemical Properties of Classified General Waste Incineration Ash from the Perspective of Metals and Rare Metals Recovery

从金属及稀有金属回收角度探讨分类一般垃圾焚烧灰的物化性质

• 发表时间: 2022
• 作者: 高岡佑輔;藤林俊介;後藤公志;大槻文悟;河井利之;清水孝彬;奥津弥一郎;池田周正;織田和樹;池崎龍仁;本田新太郎;松田秀一;高岡佑輔;Ryugo Tanaka;Ryugo Tanaka
• 通讯作者: Ryugo Tanaka

Distribution of heavy metals and hazardous elements in size-fractionated solid waste incineration bottom ash

分级固废焚烧底灰中重金属及有害元素分布

• 发表时间: 2022
• 作者: 高岡佑輔;藤林俊介;後藤公志;大槻文悟;河井利之;清水孝彬;奥津弥一郎;池田周正;織田和樹;池崎龍仁;本田新太郎;松田秀一;高岡佑輔;Ryugo Tanaka;Ryugo Tanaka;Amirhomayoun Saffarzadeh
• 通讯作者: Amirhomayoun Saffarzadeh