Abstract

 
 
 The Ural region has a large number of metallurgical companies. The extraction of metals from ore is always accompanied by the accumulation of wastes. Currently, most of the wastes are stored in dumps and storage facilities forming technogenic deposits. One such that occupies huge areas is copper slag from the copper-smelting production. According to current estimations, about 2.2 tons of slag is formed for each ton of copper produced and about 24 million tons are produced annually [1]. In general, a copper slag contains about 35-45% iron and 0.4-0.5 copper, which indicates that this is a valuable secondary resource for recycling and utilization [33]. However, more than 80% of copper slag is not utilized, which makes it possible to consider this waste not only as a valuable material, but also as a potential hazard for the environment; it contaminates the soil and water with heavy elements [8]. Currently, only small amounts of the waste are recycled. In addition, technologies do not allow the complete extraction of valuable elements. This offers potential for the development of new highly efficient technologies for processing copper smelting wastes with extraction of valuable elements such as iron (Fe). Improvement of Fe quality requires a decrease in non-ferrous metal content, especially Cu. In recent years, extensive research was directed at the extraction of valuable materials from copper slags by high-temperature firing of copper conglomerates with subsequent magnetic separation or leaching of non-ferrous metals. However, these studies do not allow the complete processing of copper smelting slags. This work studies the production of iron-containing briquettes from copper-smelting slags, and their subsequent processing to obtain valuable products for metallurgical and oil companies.
 Keywords: briquette, reduction, cast iron, proppants
 
 
Highlights
The world’s high-grade iron ore reserves are depleting
The strength of the briquettes was tested according to the standards for such a type of a product
In the fired briquettes with ABPC binder the strength decreased; it was explained by the low thermal resistance of this sample
Summary
The world’s high-grade iron ore reserves are depleting It stimulates processing of iron-containing waste with extraction of iron from low-grade ores. In this regard, the construction of large plants with sinter and coke production facilities becomes less. The mini mills are more beneficial for processing of certain types of ore and waste [23]. One of these materials is copper slag forming by copper matte smelting and converting operations during pyrometallurgical production of copper. An objective of this work was to study the possibility of processing of metallized briquettes with subsequent pyrometallurgical separation of metal and slag for production of cast iron grinding media and proppants
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