Modern industrial ecology goes beyond simple compliance with regulations. For large mining and metallurgical enterprises, environmental initiatives are becoming an integral part of business processes, where reducing negative impact is directly linked to increasing production efficiency. During the webinar, Stanislav Marenov, Chief Ecologist at Metalloinvest, discusses the practical experience of integrating environmental goals into the enterprise's economic model.
Even when using advanced technologies, such as direct reduced iron (which itself reduces emissions by 60%), large-scale open-pit mining requires long-term planning. The speaker highlights an important industry shift: the transition from qualitative assessment of environmental risks (standard 5x5 matrices) to strict quantitative and financial assessment. Today, any environmental measure must be viewed through the lens of return on investment, prevented damage, and circular economy principles.
Traditionally, the modernization of gas cleaning systems is perceived solely as a cost item to comply with maximum permissible concentrations (MPC) at the border of the sanitary protection zone. However, the example of the Mikhailovsky GOK demonstrates a different approach.
Improving the efficiency of gas cleaning equipment allowed the enterprise to safely increase the roasting speed of fine dust, which is then returned to the production of sinter ore. Thus, the environmental goal of reducing dust levels yielded a direct economic effect: an increase in processing volumes without additional burden on the environment.
One of the most revealing cases of the presentation is dedicated to water resource management at the Oskol Electrometallurgical Plant (OEMK) and Lebedinsky GOK. The enterprise faced a paradoxical situation: the use of expensive reverse osmosis systems allowed industrial wastewater to be treated to strict fishery standards. However, discharging this crystal-clear water into a river already polluted by the agro-industrial sector upstream proved meaningless from a global environmental perspective and inefficient for business.
The solution was a large-scale project to create a closed loop. Ore from Lebedinsky GOK is transported to OEMK as slurry via a 24-kilometer pipeline. Instead of treating and discharging the water after slurry dewatering, it was decided to return it back to the GOK via a parallel pipeline. This completely eliminated the discharge of industrial water into the river, removing all legislative risks and providing the enterprise with a stable resource.
The problem of overburden disposal is relevant for any quarry. The idea of selling overburden as building material is often shattered by logistical constraints — when transporting over 30-40 kilometers, the project's economics become negative.
Instead of trying to sell the waste, the company invested in changing the ore transportation technology itself. The introduction of a steeply inclined conveyor (lifting height of 215 meters at a 37-degree angle) radically reduced the stripping ratio. This solution not only decreased the volume of extracted waste rock but also freed up additional ore reserves previously blocked by railway infrastructure on the quarry walls.