Development of Advanced Mineral Processing, Material Recycling and Waste Water Treatment Technology for establishment of Urban Mines

日本的工业体系和日常生活正在转向以回收为基础的社会，以减少能源和资源消耗。建立以循环利用为基础的社会城市资源回收中心(矿)作为减少废物量的场所，应用选矿技术对有价值的材料进行再利用和回收具有重要意义。作者研究了选矿在城市矿山中的应用，开发了如下新的方法和流程：1)开发了从废旧复印机中回收塑料和金属的工艺，并利用我们实验室开发的TACUB跳汰机建立了加工中试工厂。2)采用浸出-硫化法从焚烧的城市固体废物熔化厂中回收金属。3)开发了一种混合动力汽车中废镍金属混合动力电池的电极材料回收工艺，采用低温选择性破碎和三级磁选的方法。4)利用TACUB跳汰机和多段磁选技术，开发了从废弃混凝土中回收细粗骨料和水泥水化粉末的工艺开发了一种利用硫磺还原菌处理含锰废水的先进工艺。6)开发了一种修复重金属污染土壤的微胶囊化方法。

Industrial systems and daily life in Japan are shifting to a recycling-based society to reduce energy and resource consumption. To establish a society based on recycling urban resource recovery centers (mines) are important as places to reduce waste volumes, reusing and recycling valuable materials with application of mineral processing technology. The authors have studied applications of mineral processing in urban mines, and developed new methods and processes as described below.1)A process for recycling of plastics and metals from scrapped copy machines was developed and the processing pilot plant was constructed using the TACUB jig developed in our laboratory.2)A metal recovery process from melting plants of incinerated municipal-solid waste was developed using a leaching-sulfudization method.3)A process recovering electrode materials from waste nickel metal hybrid batteries in a hybrid vehicle was developed using selective crushing at low temperature and 3 stages magnetic separation.4)A process recovering fine and coarse aggregate and cement hydrate powder from waste concrete was developed using TACUB jig and multi-gravity separator.5)An advanced process to treat wastewater containing manganese was developed using sulfur reducing bacteria.6)A microencapsulation method to remediate soils contaminated by heavy metals was developed.