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首页> 外文会议>International Congress on Mineral Processing and Extractive Metallurgy 11 - 13 September 2000 Melbourne, Victoria >The Conversion of Mineral Waste to Modern Materials Using Geopolymerisation
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The Conversion of Mineral Waste to Modern Materials Using Geopolymerisation

机译：利用地聚将矿物废物转化为现代材料

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摘要

During the past decade geopolymer technology has emerged as a possible solution for the effective stabilisation and solidification of waste materials. Amorphous to semi-crystalline geopolymers form by the co-polymerisation of individual alumino and silicate species, which originate from the dissolution of silicon and aluminium containing source materials at a high pH in the presence of soluble alkali metal silicates. It has been shown previously that geopolymerisation can transform a wide range of waste alumino-silicate materials such as fly ash and blast furnace slag into building and mining products with excellent chemical and physical properties, including high compressive strength as well as fire and acid resistance. These chemical and physical properties suggest that geopolymeric matrices derived from waste materials are well suited for environmental and other applications such as the encapsulation of mine tails, the immobilisation of heavy metals and also the fabrication of structural products. The current challenge is to demonstrate that a wide variety of natural Al-Si minerals could serve as potential source matirials for the synthesis of geopolymers. Moreover, it should be shown on a large commercial scale that it is possible to encapsulate waste materials into the geopolymeric structure without compromising the chemical and physical properties of the final product for the desired application.
机译：在过去的十年中，地聚合物技术已经成为有效稳定和固化废料的可能解决方案。非晶态至半晶态地质聚合物是通过单独的铝和硅酸盐物质的共聚形成的，这是由于在可溶性碱金属硅酸盐的存在下，在高pH值下含硅和铝的原料的溶解所致。以前已经证明，地质聚合可以将各种废铝硅酸盐材料（例如粉煤灰和高炉矿渣）转变为具有优异化学和物理特性（包括高抗压强度以及耐火性和耐酸性）的建筑和采矿产品。这些化学和物理性质表明，源自废料的地聚合物基质非常适用于环境和其他应用，例如矿山尾部的封装，重金属的固定以及结构产品的制造。当前的挑战是证明各种各样的天然Al-Si矿物可以作为合成地质聚合物的潜在原料。此外，应该以大规模的商业规模表明，有可能将废料包封到地聚合物结构中，而不会损害最终产品的化学和物理性能以达到所需的应用。

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