利用水力旋流器从采石场废料中回收矿物原料。
Recycled Mineral Raw Materials from Quarry Waste Using Hydrocyclones.
作者信息
L D Menéndez-Aguado, Sánchez M Marina, M A Rodríguez, A L Coello Velázquez, J M Menéndez-Aguado
机构信息
Escuela Politécnica de Mieres, Universidad de Oviedo, 33600 Oviedo, Spain.
Idonial Centro Tecnológico, Parque Tecnológico de Asturias, 33428 Llanera, Spain.
出版信息
Materials (Basel). 2019 Jun 26;12(13):2047. doi: 10.3390/ma12132047.
Mining activities in general, and quarrying processes in particular, generate huge amounts of tailings with a considerable presence of fine particles and with a variable composition of minerals, which could limit the direct application of those wastes. Under the paradigm of a circular economy, more effort has to be made to find adequate applications for those secondary raw materials. In this study, a process was proposed and tests were performed to valorise fine particle product as a raw material for the building and construction industry. Samples were taken from wastes in several aggregate production plants, being characterized and processed to remove the clayey components to obtain the cleanest quartz fraction. Then, different characterization and validation tests were carried out to analyse the application of these products as raw materials in the building and construction industry (cement and ceramics). Results showed that with no complex technologies, the tailings can be considered as a mineral raw material in different applications.
一般来说，采矿活动，特别是采石过程，会产生大量尾矿，其中细颗粒含量可观，矿物成分各异，这可能会限制这些废物的直接应用。在循环经济的范式下，必须做出更多努力，为这些二次原材料找到合适的应用途径。在本研究中，提出了一个流程并进行了测试，以将细颗粒产品作为建筑行业的原材料加以增值利用。从多个骨料生产厂的废物中采集样本，对其进行表征和处理，以去除黏土成分，从而获得最纯净的石英部分。然后，进行了不同的表征和验证测试，以分析这些产品作为建筑行业（水泥和陶瓷）原材料的应用情况。结果表明，无需复杂技术，尾矿即可在不同应用中被视为矿物原材料。
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