There may be some toxicants and wastes in the process of ore mining, dressing and smelting and processing, such as waste water, waste gas, tailings, waste rocks and hazardous wastes. We are committed to continuously improving our practices to minimize waste generation, increase material recovery and reuse, and prevent pollution through proper disposal to minimize the potential impact of tailings on the environment.
We strictly abide by the Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste, Standard for pollution control on the non-hazardous industrial solid waste storage and landfill (GB18599-2020), Standard for pollution control on hazardous waste storage (GB18597-2001), Integrated Emission Standard of Air Pollutants (GB16297- 1996) and the relevant environmental protection laws and regulations of China and other places where our projects are located. We encourage various production and operating sites to carry out technological innovation and process improvement, to effectively reduce the generation of waste and take actions of “volume reduction at the source, control in the middle, and management, recycling, and reuse at the end”.
Dust in organised discharge is collected and processed with dust removal equipment. Dust in unorganised discharge is controlled with adding fog cannons, atomising spray devices, sprinklers, wind and dust suppression nets, closed storage, and other measures.
High-concentration sulphur dioxide and nitrogen oxides in the smelting flue gas are recovered through the acidic gas production systems to obtain by-products such as sulphuric acid and nitric acid. The combined process technology of dry activated coke desulphurisation and highly effective wet scrubbing and the highly effective hydrogen peroxide desulphurisation are used to recover flue gas to efficiently remove sulphur dioxide and heavy metals.
All of our smelting companies have installed online monitoring equipment to dynamically monitor the concentration of gas pollutants in real time. They also regularly entrust third-party agencies to inspect the air pollutants emitted, and monitor the gas pollutants and surrounding air quality regularly on a quarterly basis.