Pioro L S, Pioro I L
Institute of Gas, National Academy of Sciences of Ukraine Degtyarovskaya Str., 39, Kyiv-113, 03113 Ukraine.
Waste Manag. 2004;24(4):371-9. doi: 10.1016/S0956-053X(03)00071-0.
Several methods of reprocessing metallurgical (blast furnace) slag into materials for the building industry, based on melting aggregates with submerged combustion, were developed and tested. The first method involves melting hot slag with some additives directly in a slag ladle with a submerged gas-air burner, with the objective of producing stabilized slag or glass-ceramic. The second method involves direct draining of melted slag from a ladle into the slag receiver, with subsequent control of the slag draining into the converter where special charging materials are added to the melt, with the objective of producing glass-ceramic. A third method involves melting cold slag with some additives inside a melting converter with submerged gas-air burners, with the objective of producing glass-ceramic fillers for use in road construction. Specific to the melting process is the use of a gas-air mixture with direct combustion inside the melt. This feature provides melt bubbling to help achieve maximum heat transfer from combustion products to the melt, improve mixing (and therefore homogeneity of the melt), and increases the rate of chemical reactions. The experimental data for different aspects of the proposed methods are presented. The reprocessed blast-furnace slag in the form of granules can be used as fillers for concretes, asphalts, and as additives in the production of cement, bricks and other building materials. As well, reprocessed blast-furnace slag can be poured into forms for the production of glass-ceramic tiles.
开发并测试了几种基于利用浸没燃烧来熔化集料，将冶金（高炉）矿渣再加工成建筑工业材料的方法。第一种方法是在带有浸没式气体 - 空气燃烧器的渣罐中直接将热矿渣与一些添加剂一起熔化，目的是生产稳定化矿渣或微晶玻璃。第二种方法是将熔化的矿渣直接从钢包排入渣接收器，随后控制矿渣排入转炉，在转炉中向熔体添加特殊的装料，目的是生产微晶玻璃。第三种方法是在带有浸没式气体 - 空气燃烧器的熔化转炉内将冷矿渣与一些添加剂一起熔化，目的是生产用于道路建设的微晶玻璃填料。熔化过程的特点是使用在熔体内部直接燃烧的气体 - 空气混合物。这一特性使熔体产生气泡，有助于实现从燃烧产物到熔体的最大热传递，改善混合（从而提高熔体的均匀性），并提高化学反应速率。给出了所提出方法不同方面的实验数据。颗粒状的再加工高炉矿渣可用作混凝土、沥青的填料，以及水泥、砖块和其他建筑材料生产中的添加剂。此外，再加工高炉矿渣可倒入模具中用于生产微晶玻璃瓷砖。
