(1) The value of tailings
As Nandan of metallic tin mine tailings, 61, the total amount of 25,220,000 tons of tailings, contains a lot of non-ferrous metal, tin, antimony, lead, zinc, silver, gold, indium, cadmium and non- Metal ore arsenic , sulfur, etc., grades are above the national industrial grade indicators, some have reached large or extra large, the initial estimate of the scale of 3 billion yuan of resources. If we rely on the new development of mineral processing technology , the recovery of these metals is no less than the establishment of a new mine. Panzhihua iron ore tailings containing useful components dozen copper, nickel, titanium, vanadium, corresponding to a large nonferrous metal mines. The non-metallic minerals such as coal gangue and other surrounding rock mines, etc. are also useful material, but it has been mined to the ground, to gather together the wealth.
(2) Tailings development and utilization measures
In order to further improve the development and utilization of tailings resources, the following measures are recommended:
First, we must formulate and implement relevant policies, support enterprises to carry out technological research and technological transformation, and implement preferential policies such as reduction and exemption of resource taxes and fees, and guide and encourage social and enterprise funds to invest in tailings and other resources.
Second, we must strengthen the technological innovation of comprehensive utilization of tailings, research and develop advanced technology, advanced equipment, advanced technology, and accelerate the transformation of research results.
The third is to use the central financial funds to focus on supporting the utilization of resources in large enterprises, tailings and “waste†in large mining areas, and to play a guiding role.
The fourth is to strengthen the development of access management, formulate and improve the standards for the access and supervision of mining development enterprises, promote the restructuring of enterprises, and strengthen and expand mining enterprises.
The fifth is to strengthen the safety production management work in the development and utilization of tailings to prevent safety production accidents.
(3) Prospects for mine tailings recovery
China is in the stage of accelerating industrialization and urbanization, with large consumption of mineral resources and high dependence on foreign countries. However, the global price of mineral products continues to rise, increasing the production costs of enterprises demanding mineral products, while at the same time increasing the pressure on resource security.
Under the situation of tight supply of global mineral resources, developed countries around the world have found that the remaining residues and tailings after the processing and utilization of mineral resources contain opportunities for secondary utilization. China is a large mining country, developing and utilizing a large number of long-term accumulated tailings, which can not only turn waste into treasure, but also effectively alleviate resource and environmental pressures.
Tailings are “waste†that mining companies discharge under certain technical and economic conditions, but at the same time they are potential secondary resources. When technical and economic conditions permit, they can be effectively developed again.
After the ore is sorted and comprehensively treated, its main useful components are rich in concentrate, while other residual materials are called tailings. The content of the main useful components in the tailings is called the tailings grade. It is an important parameter for selecting an economical and reasonable beneficiation program to evaluate the selectivity of ore.
(4) tailings recovery equipment
1 tailings recovery machine
An energy-saving and high-efficiency beneficiation equipment used for the recovery of tailings in the magnetite process, without the loss of ore powder, and making full use of effective resources. With the development of production technology in the mineral processing equipment industry, the green energy-efficient slogan is ready to emerge, and green environmental protection and energy conservation is imperative. Therefore, the role of the tailings recovery machine is particularly important. The high-efficiency tailings recovery machine not only can effectively curb pollution behavior, but also can greatly reduce production costs, greatly improve production efficiency, and has the characteristics of low input and high output.
2 tailings sludge dewatering machine
The best choice for tailings dewatering---belt sludge dewatering machine, with large processing capacity, low energy consumption, labor saving, sludge dewatering of tailings becomes a necessary work for the next step of tailings.
The tailings recovery equipment is the latest type of machinery used in the recently selected (iron) mining industry in China for tailings production and recycling. Its production method: mainly to re-select and recycle the waste of mineral processing equipment, and the recovery rate has reached a new level. It is produced in a single machine with unique methods (also can be used with mills, mills, etc.). Limit the national mineral resources. The equipment has the characteristics of excellent materials, reasonable design structure, convenient operation and high economic return.
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