At present, China's major mines in the mining process, produced a large number of tailings emissions, environmental pollution and groundwater pollution to a certain extent. However, the major mining enterprises are still facing many difficulties in the traditional tailings discharge process. So, what Xiao Bian wants to say today is whether filling mining can solve the problem of tailings discharge in major mines.
First of all, let's talk about the domestic tailings treatment methods, which are generally divided into two categories, one is: building a tailings reservoir on the ground and storing the discharged tailings. The tailings discharged from beneficiation are transported to the tailings silo after dense or filter pressing. It is divided into dry pile or wet pile. The second category is: for underground goaf filling. The concentrated tailings, directly or after mixing with the cementitious material, will be transported to the underground mining area for filling. Filling of the slurry can choose to pump or self-flow two ways.
At present, due to the development of tailings treatment technology of underground goaf backfilling from low concentration graded tailings filling to full tailings high concentration filling technology. Tailings high concentration discharge and full tailings high concentration filling and other new treatment process, with safety, environmental protection and economic benefits, and the domestic government departments strongly encourage, so, has become the development trend of tailings treatment.
Furthermore, China has increased its research and development efforts in the research of high concentration filling technology in the whole tailings. For different types of mines, such as metal mines, lead-zinc mines, coal mines, etc., different mines have different technologies and processes. Formed a full set of high concentration of tailings filling station with independent intellectual property rights. For example, the filling industrial pump produced by Hunan Yutai Heavy Industry has a slurry concentration of 85% and a conveying distance of 3000-4000 meters. This kind of filling industrial pump, as the core equipment of mine filling, pumping filling slurry performance has been successfully used in many mines, with the characteristics of long conveying distance, large pumping volume, long service life and very simple operation and maintenance.
The application of high concentration sand cemented filling of the whole tail, on the one hand, reduces the tailings stockpile of the ground tailings reservoir, reduces the hidden danger of dam break of the tailings reservoir, reduces the pollution of the living environment of the surrounding residents, and the pollution of groundwater and surface crops. In addition, the mined-out area can be backfilled to avoid the harm of surface collapse.
If you need to know more about tailings discharge and filling, you can call Hunan Yutai Heavy Industry Hotline: 18774995599.
