The construction situation of the hottest green mi

There is a long way to go to improve the situation of green mine construction

over the past month, the heavy metal Department of China Nonferrous Metals Industry Association and China Nonferrous Metals newspaper have launched a series of reports on the implementation of green mine construction norms in the nonferrous metals industry, which introduced the construction and development of green mines in the nonferrous metals industry to readers in various forms. After Chen quanxun, President and Secretary of the Party committee of China Nonferrous Metals Industry Association, issued a call to the whole industry to seriously implement the code for the construction of green mines in the nonferrous metals industry with the title of "building green mines and retaining green mountains", China nonferrous metals daily successively launched 11 relevant reports in various ways, including expert interpretation, exclusive interviews, typical publicity, green mine knowledge, etc., and received good publicity results. Although the series of reports have come to an end for the time being, there is still a long way to go in the construction of green mines in the industry, so China Nonferrous Metals News will continue to report in different forms. At this stage, we also visited and investigated the construction of green mines in many enterprises, and felt that the construction situation of green mines in the industry was improving, but the task was still arduous, which was a long way to go

remarkable achievements have been made in the construction of green mines for non-ferrous metals

from the proposal of the concept of "green mining" at the 2007 China International Mining Conference to the release and implementation of green mine construction specifications for nine industries in June 2018, the development of China's green mining industry has gone through more than 10 years. The construction of green mines has achieved a leap from concept to concept and then to consensus and action. For more than 10 years, nonferrous metal mines have vigorously promoted green development. Among the 661 national green mine pilot units selected, 119 nonferrous metal mines account for 18% of the national green mines, accounting for 3.5% of the national nonferrous metal mines, which is far higher than the proportion of national green mines in the national mines. It shines in the tide of green mining development in China and plays a demonstration and leading role. Nonferrous metal mining enterprises have significantly improved in green development, energy conservation and emission reduction, comprehensive utilization, digital mining and other aspects

in mining technology, filling technology has been widely used. Some mines adopt full tailings filling technology, which greatly reduces the pushing and storage of tailings. A few mines have basically realized that waste rocks do not come out of the pit, waste water is recycled, tailings are filled and fully utilized, and the Zui high realm of zero discharge is truly achieved. For example, the 8800kt/a open pit mining project of Pingguo Bauxite Mine of Chalco Guangxi Branch, designed by Changsha Nonferrous Metals Institute, uses the new integrated process of "stripping Mining Reclamation", the recovery rate is 94.87%, the reclamation cycle of the goaf is shortened to about 2 years, and the reclamation rate is 93.16%

in terms of plant greening, large mines and old enterprises attach importance to the reclamation and ecological restoration of abandoned mine sites, and the greening coverage rate of most backbone mines has reached more than 90%. For example, the greening coverage rate of Pingguo Taiping aluminum mine of Aluminum Corporation of China has reached 100% of the area that can be afforested. Through the test of agricultural properties in the mining area and the study of soil selection in the newly cultivated layer of reclaimed land, and the comprehensive application of biotechnology, engineering technology and mycorrhizal technology, the artificial ecosystem dominated by agricultural cultivated land and optimized forest, shrub and grass has been rebuilt, which not only significantly improves the ecological environment of the mining area, but also realizes the intensive use of land For the purposes of "returning land to the people", Zui has finally achieved the "three win" goals of government satisfaction, enterprise satisfaction and farmers' satisfaction. In Xitieshan lead-zinc mine, for example, more than 2000 tons of wastewater are produced every day. Due to the high salt content in the water, if the underground wastewater is not treated, it cannot be used in industrial production; If water treatment is carried out, the cost is high. Facing the embarrassing situation that the Gobi desert is short of water on the one hand, but the underground wastewater can not be used on the other hand, the enterprise draws lessons from the experience of planting trees in the past, and uses this part of wastewater to irrigate red willows and Elaeagnus angustifolia suitable for survival on the plateau. After two years of planting, the survival rate of Salix koraiensis and Elaeagnus angustifolia has reached 9 and has been used in accelerated aging experimental research for more than 0%. This not only afforests the environment of the mining area, but also makes use of underground wastewater, which has great environmental benefits. At this stage, we can adjust for any imbalance

in terms of comprehensive utilization of resources, lomo group has achieved comprehensive recovery of associated tungsten, copper, rhenium and sulfur resources in terms of comprehensive utilization of CO associated resources and achieved significant benefits. Among them, the low-grade scheelite recovery technology developed and continuously improved has realized the industrialization and high efficiency of the comprehensive utilization of the associated tungsten resources of Sandaozhuang molybdenum mine, filled the domestic gap in the beneficiation of low-grade scheelite, and opened a precedent for the comprehensive recovery and utilization of low-grade associated scheelite

in terms of energy conservation and emission reduction, Qixiashan lead zinc mine of Nanjing Yinmao Lead Zinc Mining Co., Ltd. adopts the "zero discharge rapid quality separation and recycling resource utilization technology of beneficiation wastewater". The concentrator adopts the scheme of rapid quality separation and reuse of wastewater in each separation operation circuit, coagulation sedimentation and activated carbon adsorption of total tailings water, appropriate treatment of end mixed wastewater, removal of copper, lead, zinc and other metal ions and solid suspended solids in the wastewater that are not conducive to beneficiation and reuse, retention of useful components and full reuse, realizing the resource utilization of all wastewater in the concentrator without discharge

some understandings on promoting the construction of green mines

mining enterprises must internalize green development in the heart and externalize it in the practice. Promoting green development and adhering to ecological and environmental protection have become the core issues for China to achieve sustainable development, and the content of ecological civilization has been written into the Chinese Constitution for the first time. In June this year, the "opinions on Comprehensively Strengthening ecological environment protection and firmly fighting the tough battle of pollution prevention and control" issued further deployment on strengthening ecological environment protection and building ecological civilization, and defined the overall objectives, tasks and paths of fighting the tough battle of pollution prevention and control. "By 2020, the overall environmental quality will be improved, and the level of ecological environment protection will be commensurate with the goal of building a moderately prosperous society in all respects"; "By 2035, the quality of the ecological environment will be fundamentally improved, and the goal of a beautiful China will be basically achieved". Therefore, it can be said that the "13th five year plan" is a critical period for the development of "green mines", where opportunities and challenges coexist. As a mining enterprise, we must truly coordinate and balance the relationship between green water and green mountains and Jinshan and Yinshan, perform our duties in ecological environment protection, and shoulder the responsibility of building green mines and promoting social progress

adhere to innovative development. Innovation is the foundation of green development of enterprises. From the current trend of ecological civilization construction and industrial reform, mining enterprises must rely on the driving role of high-tech to adapt to the new era, give full play to the role of innovative technology in protecting the environment and reducing waste emissions, realize the transformation of mining kinetic energy and industrial upgrading, minimize environmental disturbance and maximize resource utilization efficiency. For example, open-pit mines vigorously promote the integrated technology of stripping, dumping, land reclamation and reclamation; Underground mining encourages enterprises to adopt filling technology. This Swiss based manufacturer is seeking to turn to portfolio mining with higher profit margin and mining technology to reduce surface subsidence; Solution mining technology should be popularized for oxidized ore, or the technology of directly obtaining metal from the deposit should be adopted; Mining technology with high water reuse rate should be popularized in mines with hydraulic mining

from paying attention to quality standards to the construction of the whole process green manufacturing system. Constrained by the level of development, in the past, enterprises mainly focused on product quality and performance, and paid little attention to the impact on the environment caused by the centralized development of new aluminum based materials and the manufacturing of new aluminum alloy materials for high-end equipment during the whole life cycle of production, consumption and other products, such as the selection, production, sales, use, recycling and treatment of raw materials. However, with the gradual improvement of standard systems such as green factories, green mines and green manufacturing, and the increasingly stringent requirements of environmental protection, Zui can achieve a large degree of resource utilization in the whole life cycle of products; Achieve Zui to reduce energy consumption to a large extent; Reduce the generation and emission of pollutants and reduce the disturbance to the environment to a large extent; The production enterprises that use less or no toxic and harmful raw materials and adopt the green manufacturing standard system throughout the process will not only have better development space, but also have more competitive products

increase policy support and differentiated management for green mines. The construction of green mines is a complex systematic project, and the roles of all parties should be fully coordinated. While forming a green mine construction promotion system of enterprise owner construction, third-party evaluation and social supervision, we should strengthen the role of government guidance, especially in some policies. For example, we will increase the support of special financial funds for green mining enterprises, such as the exploration of Replacement Resources in crisis mines, the restoration and management of the mine geological environment, and the conservation and comprehensive utilization of mineral resources. Give full preference to tax reduction and exemption policies such as resource tax and enterprise income tax, reduce the pressure on enterprises to pay taxes, and enhance the enthusiasm of enterprises to build green mines. In addition, considering the differences and particularity of mining development, it should be considered to establish and improve the standard system of green mines by regions and minerals, and put the requirements of building green mines through the whole process of mine planning, design, construction, production and pit closure, so as to gradually form a policy system conducive to the development of green mines