电石渣制备高附加值碳酸钙的研究进展

发布时间：2018-03-21 23:24

本文选题：电石渣　切入点：资源化　出处：《化工进展》2017年01期 　论文类型：期刊论文

【摘要】：电石渣制备碳酸钙可实现电石渣的高附加值利用,是实现电石行业可持续发展的有效途径。本文总结了电石渣制备碳酸钙的方法,着重介绍了电石渣中钙的提取和碳化两个主要工艺过程。综述了电石渣在制备轻质碳酸钙、纳米碳酸钙及其表面改性和晶型控制方面的研究进展。分析认为,氯化铵浸取CO_2碳化工艺易于实现浸取剂的循环利用,同时又能利用废气中的CO_2,具有较大的利用潜能和广阔前景。在电石渣制备碳酸钙的过程中,可以同时实现纳米碳酸钙的表面改性,并通过控制碳化温度、加入添加剂等实现晶型控制,制得不同晶型和形状的碳酸钙产品。电石渣资源化应用制备碳酸钙,呈现出从低附加值向高附加值发展的趋势。未来电石渣资源化利用制备碳酸钙应进一步完善循环工艺,并深入进行碳酸钙的超细化、表面改性化和晶型控制研究。
[Abstract]:The preparation of calcium carbonate from calcium carbide slag is an effective way to realize the sustainable development of calcium carbide industry. The main process of calcium extraction and carbonization from calcium carbide slag is introduced in this paper. The research progress in the preparation of light calcium carbonate, nanometer calcium carbonate and its surface modification and crystal shape control are reviewed. Ammonium chloride leaching of CO_2 carbonization process is easy to realize the recycling of extractant, and at the same time, it can use COS-2 in waste gas, which has great utilization potential and broad prospect. In the process of calcium carbonate preparation from calcium carbide slag, The surface modification of nanometer calcium carbonate can be realized at the same time. By controlling the carbonation temperature and adding additives, the products of calcium carbonate with different crystal forms and shapes can be obtained. Calcium carbonate can be prepared by using calcium carbide slag as a resource. The future utilization of calcium carbonate from calcium carbide slag to calcium carbonate should further improve the cycling process and further study on the superfine surface modification and crystal shape control of calcium carbonate.
【作者单位】：沧州师范学院化学与化工学院;天津大学材料科学与工程学院;
【基金】：河北省高等学校科学技术研究指导项目(ZC2016092) 河北省沧州市渤海新区管委会资助课题
【分类号】：TQ132.32

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