Manufacture of briquettes from ball bearing steel pulverized metal waste without prior cleaning by cold pressing

12 фев 2025

Received: 17.07.2025
Accepted: 28.07.2025
Vitaliy Kulikov, Erkenaz Baiseitova*, Svetlana Kvon, Aristotel Issagulov, Sholpan Tulegenova, Tatyana Kovalyova, Pavel Kovalev

The article presents a study on the production of briquettes from bearing steel machining waste for use in secondary steelmaking. Cold compaction of pulverized ShH15 steel chips was carried out using a laboratory RP-50 hydraulic press with a maximum capacity of 500 kN. Through a series of experiments, the optimal composition of the briquetting mixture was established as 85% steel waste, 10% bentonite clay, and 5% liquid glass. The pressing parameters were optimized to improve the mechanical integrity of the briquettes. Thermal drying at 80 °C for 90 minutes, combined with a pressing force of 60 kN, resulted in the formation of structurally uniform briquettes with high compressive strength. These results demonstrate the effectiveness of the proposed method for converting uncleaned steel waste into a reusable metallurgical feedstock. These findings offer a novel solution for sustainable recycling of alloyed steel residues in industrial metallurgy.

Keywords: briquetting, bearing steel waste, cold pressing, bentonite binder, liquid glass

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