en.Wedoany.com Reported - Recently, in front of the real-time monitoring screen at the Anqing Copper Mine's Dressing Plant of Tongling Nonferrous Metals Group in Anhui, Wu Nana, the Party branch secretary of the plant, pointed to the data showing "Iron grade in discharged tailings: 11.8%" and said, "In the past, tailings were seen as an 'unshakable burden,' occupying space and wasting resources. Now it's different. Every 1 percentage point reduction in iron grade feels like retrieving real gold from the 'waste pile!'" What was once a burden has now been transformed into a resource that continuously creates value.

By integrating Party building with technology, the plant has promoted full staff participation in reducing the iron content in tailings. At the beginning of the year, the plant set "reducing the iron grade in discharged tailings" as its core goal. The Party branch drew up a "battle map," breaking down the overall goal into actionable smaller tasks, which were posted in Party member responsibility zones and team bulletin boards. Wang Aiguo, the head of the iron selection team, said, "Previously, inspections only focused on whether equipment was running. Now, seeing the indicators on the bulletin board, we actively monitor the feed rate of the magnetic separators. The data is updated daily, and no one wants to fall behind." Members of the Party member task force track the iron content in tailings and the operating parameters of magnetic separators daily, analyzing data and identifying problems at weekly Party member meetings. This has shifted the "tailings reduction" work from being the responsibility of a few to a collective effort.

In terms of technological innovation, the plant has implemented multiple measures to recover resources from tailings. Xu Jiahe, the senior technical supervisor for mineral processing, pointed out, "The high iron content in tailings stems from 'inadequate processing and incomplete recovery.'" The plant recommissioned eight long-idle magnetic separators from the heavy medium plant, increasing the magnetic field intensity from 2500 Gauss to 3000 Gauss. This reduced the magnetic iron content in tailings by 2 percentage points, recovering an additional tens of tons of iron concentrate per month. Simultaneously, a new "reverse selection desulfurization flotation" process was added to recover coarse sand from the classified total tailings, enabling the recovery of an extra 150 tons of iron concentrate per month. By shutting down inefficient copper selection processes and directly selling sulfur concentrate as a heavy medium product, the plant achieved an average monthly increase in benefits exceeding 1 million yuan. Detailed improvements, such as replacing the magnetic separator rinse water with high-quality water and installing piston rods, reduced pipeline blockage frequency by 60% and stabilized water pressure above 0.3 MPa, effectively minimizing iron loss. Xu Jiahe stated that the iron content data has dropped from over 14% to below 12%, cumulatively increasing iron product output by over 8000 tons.

To consolidate the results, the plant has established a long-term mechanism. Wu Nana emphasized, "Tailings reduction cannot be a 'passing trend.' Good practices must be solidified into 'daily habits.'" The plant compiled 23 practical operation methods into the "Daily Control Manual for Reducing Iron in Tailings," enabling operators to perform precise operations and avoid indicator fluctuations. Furthermore, the plant is exploring further separation of coarse tailings sand, aiming to reduce the iron grade by another 2 percentage points, and optimizing product sales channels to sustain profit growth. Shao Zhanggen, the Party committee secretary of the mine, said, "We used to always see tailings as a burden. Now we understand that with the right methods, treasure can be mined even from waste." In the next step, the mine will extend the "Party building + technology" model to other areas, such as reducing electricity consumption in mineral processing and increasing copper recovery rates, to promote high-quality development.

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