Metal mine tailings paste discharge technology

1. Technological innovation

In the field of comprehensive utilization of metal mines, the birth of tailings paste discharge technology not only brings good news to mine production in arid and water-scarce areas, but also takes solid steps in energy conservation, emission reduction, and efficient use of resources.

2. Wide range of applications, especially ideal in arid areas

Tailings paste discharge technology is suitable for most areas, especially in desert areas with arid climate and flat terrain, and its advantages are unique. In these places, not only can the construction cost of tailings dams be saved, but tailings can also be efficiently utilized and environmental pollution reduced.

3. Technical principles and key breakthroughs

This technology forms a paste through the concentration of tailings, which is transported through pipelines and discharged at multiple points to achieve dry storage of tailings. The key lies in the efficient thickening and rapid evaporation of the tailings paste to ensure the stable storage of the tailings under dry conditions. In addition, this technology has certain requirements for the fineness of the tailings to ensure the formation of a stackable paste.

4. Process flow and technical indicators

After mixed flotation, the tailings enter the deep cone thickener for flocculation and sedimentation. The paste with deep cone bottom flow is transported to the tailings dam for discharge through a feeding pump and a diaphragm pump. Throughout the process, mineral processing wastewater is efficiently recycled, achieving zero discharge of water resources. In terms of technical indicators, the tailings underflow emission concentration reaches 68±2%, the tailings cost is only 1.50 yuan/t, and the comprehensive water consumption is as low as 2.5655m³/t.

5. Broad promotion prospects and leading the green development of mines

Tailings paste discharge technology has shown broad development prospects in the mining field with its unique advantages and remarkable results. This technology can not only effectively reduce the area occupied by tailings ponds and improve safety, but also achieve recycling of water resources and energy conservation and emission reduction. As mine safety becomes more and more important and land resources become increasingly tight, this technology will become one of the preferred options for future mine construction.