A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals
The invention provides a method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals, and belongs to the technical field of comprehensive recovery and utilization of tailings. The invention provides a method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals, which comprises the following steps: sequentially grinding and screening the tailings to obtain granules; pelletizing the granules, a reducing agent and a binder to obtain pellets; the pellets are roasted, and light aggregate and flue gas are obtained; using the lightweight aggregate as a building material; and the flue gas is cooled, and valuable metal is recycled. According to the invention, through pellet roasting, silicon, calcium, aluminum, magnesium, iron and oxygen elements in tailings are roasted to form ceramsite with a silicon-calcium-magnesium-aluminum component framework, and the ceramsite is sold as lightweight aggregate with high added value. According to the method, valuable metals such as tin, lead and zinc in the tailings are comprehensively recovered while high-value utilization of the tailings is realized, and a new thought is provided for improving the utilization rate of tailings resources and comprehensively recovering the valuable metals.
本发明提供了一种尾矿生产轻集料并综合回收有价金属的方法，属于尾矿综合回收利用技术领域。本发明提供了一种尾矿生产轻集料并综合回收有价金属的方法，包括以下步骤：将尾矿依次进行磨矿和筛分，得到粒料；将所述粒料、还原剂和粘结剂进行造球，得到球团；将所述球团进行焙烧，得到轻集料和烟气；将所述轻集料用作建筑材料；将所述烟气冷却，回收有价金属。本发明通过球团焙烧，尾矿中硅、钙、铝、镁、铁、氧元素经焙烧后形成硅钙镁铝组分骨架的陶粒，作为高附加值的轻集料出售。本发明在实现尾矿高值化利用的同时，综合回收尾矿中锡、铅、锌有价金属，为提高尾矿资源利用率和综合回收有价金属提供新思路。
Method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals
The invention provides a method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals, and belongs to the technical field of comprehensive recovery and utilization of tailings. The invention provides a method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals, which comprises the following steps: sequentially grinding and screening the tailings to obtain granules; pelletizing the granules, a reducing agent and a binder to obtain pellets; the pellets are roasted, and light aggregate and flue gas are obtained; using the lightweight aggregate as a building material; and the flue gas is cooled, and valuable metal is recycled. According to the invention, through pellet roasting, silicon, calcium, aluminum, magnesium, iron and oxygen elements in tailings are roasted to form ceramsite with a silicon-calcium-magnesium-aluminum component framework, and the ceramsite is sold as lightweight aggregate with high added value. According to the method, valuable metals such as tin, lead and zinc in the tailings are comprehensively recovered while high-value utilization of the tailings is realized, and a new thought is provided for improving the utilization rate of tailings resources and comprehensively recovering the valuable metals.
本发明提供了一种尾矿生产轻集料并综合回收有价金属的方法，属于尾矿综合回收利用技术领域。本发明提供了一种尾矿生产轻集料并综合回收有价金属的方法，包括以下步骤：将尾矿依次进行磨矿和筛分，得到粒料；将所述粒料、还原剂和粘结剂进行造球，得到球团；将所述球团进行焙烧，得到轻集料和烟气；将所述轻集料用作建筑材料；将所述烟气冷却，回收有价金属。本发明通过球团焙烧，尾矿中硅、钙、铝、镁、铁、氧元素经焙烧后形成硅钙镁铝组分骨架的陶粒，作为高附加值的轻集料出售。本发明在实现尾矿高值化利用的同时，综合回收尾矿中锡、铅、锌有价金属，为提高尾矿资源利用率和综合回收有价金属提供新思路。
Method for producing lightweight aggregate from tailings and comprehensively recovering valuable metals
一种尾矿生产轻集料并综合回收有价金属的方法
WANG HUA (author) / ZHENG YONGXING (author) / WANG HENG (author) / HU JIANHANG (author) / YU YONG (author)
2023-06-23
Patent
Electronic Resource
Chinese
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