CO_2矿化非碱性矿的离子迁移规律及过程强化基础

Ion Migration Rule and Process Reinforcement basis for the CO_2 Mineralization of Non-alkaline Ores

非碱性矿矿化固定CO_2是实现大规模、低能耗碳减排的重要途径。本课题以高炉炼铁排放的大宗工业固废高炉渣作为矿化原料,采用低温熔盐活化的方法,提高固体原料的反应活性,以实现温和条件下高效的CO_2矿化与钛铝组分提取。通过该研究,掌握非碱性矿熔盐活化原理和CO_2矿化反应基本规律,建立非碱性矿矿化CO_2过程强化方法,完成以CO_2矿化含钛高炉渣联产钛白、氧化铝及新型建材的工艺集成,奠定相关工程科学基础。本文就该课题研究的概况、研究进展、预期经济社会效益作了详细的介绍。

CO2 mineralization with non-alkaline ores is an important method to achieve carbon emission reduction on a large scale and low energy consumption. In this study, a kind of industrial solid waste, blast furnace slag, discharged from blast furnace was used as the raw material for mineralization. The reactive activity of blast furnace slag was improved by the low temperature mohen salt method, so as to achieve high efficiency CO2 mineralization and extraction of titanium and aluminum components under mild conditions. Through this study, the activation principle of non-alkaline ore by molten salt and the basic law of CO2 mineralized reaction were clearer. The strengthening method for CO2 mineralization was established, and the technology for integration of production of titanium white, alumina and building materials with CO2 mineralization was achieved. In this paper, the general situation, research progress and expected economic and social benefits of the project are introduced in detail