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.

焚烧灰中含有不可燃物质，如矿物和玻璃，贱金属，如铜和锌，以及贵金属，如金和银。如果这些可以回收和再利用，焚化炉灰可以是经济上有价值的和环境上安全的。然而，许多问题仍然存在关于焚烧炉灰的详细表征。因此，本研究着重于从焚烧炉灰中回收金属。为了评估金属回收的潜力，从日本的三个焚化炉中收集了风干的底灰样品。大型不可燃材料（金属、玻璃、石头等）手动除去，并使用4mm、2mm、1mm和0.5mm筛将剩余的残余物分成五种粒度，并对每种级分进行多次分析。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，和标准的浸出试验，对每个部分，以确定每个阶段的焚烧炉底灰在每个部分，并确定其物理和化学性质。粉尘灰比主灰含有更高百分比的铅、锌和铜。因此，人们认为需要分离和回收粉尘灰以回收这三种金属。然而，由于产生的粉尘灰的百分比小，因此认为从分离的粉尘灰中回收铅以及从焚烧炉灰（粉尘灰和主灰）中回收锌和铜而不分离和回收粉尘灰更有利可图。

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