" We take'opening up local resources, benefiting local people and promoting local development 'as our own responsibility, adjust measures to local conditions, continuously strengthen the construction of green factories, and adhere to green as the background color. The road of sustainable development with less pollution and good benefits has become a business card of modern building materials enterprises in Haidong City, Qinghai Province. Wang Wangjun, secretary, chairman and general manager of the Party Committee of Minhe Company, said when referring to the practice of green development in enterprises.
In recent years, Minhe Company has deeply studied and implemented Xi Jinping's thought of ecological civilization, practiced the new development concept, regarded green, recycling and low carbon as the new momentum of enterprise development, and always adhered to the concept of "green water and green hills are Jinshan and Yinshan" and the concept of "intensive plant, harmless raw materials, clean production, waste recycling and low energy". Integrating green development into all aspects of production and operation, a new way of green transformation and development of traditional industries has been found. The company's Beishan marble mine has been selected into the national green mine list, won the title of green factory in Qinghai Province in 2020, won the national green factory in 2022, and has been awarded the advanced unit of safety production in Qinghai Province for six consecutive years.
Closely linked to the transformation and upgrading to achieve green development
, the road of thinking, take and go far. Minhe Company is located in Chuankou Town, Minhe County, which is known as the gateway of Qinghai Province. Its predecessor is Minhe County Cement Plant. After the strategic reorganization in 2006, it became a holding subsidiary of Gansu Qilianshan Cement Group Co., Ltd. The company has an energy-saving and environmental protection, The 2000t/d high solid-gas ratio process cement with advanced technology and equipment " is riding the era train of construction of ecological civilization. Minhe Company has actively explored a green industrial transformation and development path to break the bottleneck constraints of resources and environment.
How to make positive contributions to the improvement of ecological environment and energy and resource conservation while realizing the development of enterprises, and support the simultaneous promotion of high-quality development of enterprises and the construction of ecological civilization?
Minhe Company insists on innovation-driven, continuously increases investment in green mine construction and energy-saving and emission-reduction technological transformation, actively explores new ways of scientific mining and ecological restoration, continuously optimizes technological process, comprehe nsively refines energy-saving and emission-reduction technological transformation schemes, and successively invests more than 200 million yuan. The technical transformation of mine adit and crushing system, road hardening, high and steep slope covering and greening have been realized, and the technical transformation of cement kiln with high efficiency, energy saving and emission reduction, kiln tail bag dust collection, raw mill and 2 # cement mill system with energy saving and consumption reduction have been completed. It has achieved the expected goal of greatly reducing the consumption of coal and electricity, lowering the energy consumption index of each process below the quota standard, and meeting the emission standards of dust and NOX.
Actively establish and improve the emergency response mechanism for polluted weather, improve the ability of prevention, early warning and response, actively implement the regulations of peak staggering production in Qinghai Province, and minimize the harm caused by polluted weather. Promote enterprises to move towards the development direction of efficient operation, resource conservation and environmental friendliness. As an important ecological barrier in western China
, Beishan marble mine is a medium-sized hillside open-pit mine located at the southern foot of Qilian Mountains. Moreover, because the steep rock slope does not have the material basis and environment for vegetation growth, it is extremely difficult to achieve slope greening, which increases the difficulty of mine greening.
Minhe Company takes the construction of green mine as the goal, deeply investigates and analyzes the characteristics of the current situation of the slope, combines with the actual situation, actively explores, strives to practice, organizes technical forces to set up a research team, and through continuous exploration and experiment, studies and formulates the Technical Scheme of Earth Protection and Slope Green Covering.
Aiming at the problem that the dip angle of the final slope of the mine is 80 °, which is approximately vertical, the smooth controlled blasting is adopted near the slope to control the slope surface at about 75 °, which is basically consistent with the attitude of the rock stratum, and the slope collapse is effectively prevented.
The Quaternary loess stripping in the production process is transported to the toe of the slope, with a width of 8 meters as the accumulation of protective soil layer, using heavy engineering machinery and equipment to roll and tamp from bottom to top, and using excavators to mechanically brush the slope, finally forming a slope with a slope angle of 60 degrees, effectively improving the stability of the slope. At the same time, in order to ensure that the slope is not affected by rainwater, perfect interception and drainage facilities have been built to effectively prevent the adverse effects of rainwater erosion on the slope. The fish-scale pits with a diameter of 10 cm were excavated on the slope surface after
the slope was protected by hilling, and the grass species such as Elymus dahuricus, Caragana korshinskii and Medicago sativa, which were suitable for the local climate growth conditions, were planted. "Take the strength of the whole staff, gather the wisdom of the whole staff" to raise seedlings, earth up, plant trees and grass voluntarily, plant pine, poplar, elm and other tree species on the platform at the bottom of the slope, and carry out piecemeal management.
At the same time, water storage tanks are manufactured by waste processing. In view of the difficulties of large drop and long diversion distance at each point, three-stage pumps are set up to pump water to each point step by step, which ensures the irrigation of slopes, trees and vegetation, and realizes the greening of about 7000 square meters at the final slope of the platform above 2190 meters above sea level. In view of the large dust during the unloading period, two fog guns were installed at the chute unloading port, which greatly reduced the dust during the unloading period.
In order to better realize the restoration and management of the ecological environment, in 2022, Minhe Company invited a professional team to carry out advanced new technology of ecological greening by spray seeding. The most natural afforestation mode starting from 'seeds' uses special equipment and special materials to prepare a soil culture medium with an excellent granular structure, and the soil culture medium is sprayed and sowed by professionals on steep slopes with the slopes of 37 to 43 degrees and 50 to 60 degrees respectively to artificially prepare a soil culture medium most suitable for plant growth and form a' natural 'woody plant community with developed root systems. The ideal plant community has been formed rapidly, and about 30000 square meters of ecological restoration and management have been completed, so that the "natural plant community" and the surrounding environment coexist harmoniously. Wu Xiaojun,
then Deputy Secretary of the Qinghai Provincial Party Committee, Liu Tao, Vice Governor of Qinghai Province, and more than 100 persons in charge of government functional departments such as the Provincial Department of Natural Resources and the Department of Ecological Environment, as well as the heads of mining enterprises, came here to exchange and study on the restoration and management of mines. Wu Xiaojun highly appraised and fully affirmed the restoration and management of mines in enterprises. The spot renovation work has also successfully passed the on-site acceptance of the spot acceptance team in Qinghai Province.
Promoting brand value and promoting agglomeration development
into the factory area of Minhe Company, we can see the clean and tidy scene, bright and orderly equipment and beautiful flowers and trees. The cement packing point is clean and bright, and the generous workers make people feel more cordial.
In recent years, the company attaches great importance to safety and environmental protection, green development and infrastructure construction, so that the production environment is clean and beautiful, and the workplace is safe and orderly, which not only avoids environmental risks, but also creates a good working and living environment for employees.
In order to better achieve cleaner production and dust pollution control, the company invested more than 20 million yuan to build a fully enclosed material storage shed and built a reserve. 4. After transformation, a vibrant fruit forest garden and a clean and tidy parking lot were built for workers, which not only beautified the environment, but also brought more convenience to workers. The orchard has become a good place for workers to take a walk after dinner. More than 9 million yuan has been
invested in the purchase of bulk trucks, high-pressure washing trucks and sweepers to make the cleaning of factory roads and workplaces more convenient. Muffler shall be installed on the noise source to reduce noise pollution. A new type of air suspension fan is used in large Roots blower to achieve energy saving and noise reduction. The technical transformation of preheater resistance reduction and denitrification was carried out to further reduce pollutant emissions and achieve ultra-low emissions of atmospheric pollutants. More than 1 million yuan was
invested to upgrade the laboratory, which made the laboratory change from appearance to connotation. At the same time, it greatly improves the working conditions and working environment of quality inspectors, and achieves the transformation goals of meeting the conditions of standardized laboratories, enhancing the good image of laboratories, improving the inspection conditions and eliminating potential safety hazards. In
recent years, the dust collection equipment has been advanced, the management system has been more sophisticated, the equipment is clean and bright, and the site is neat and orderly. The bright green floor makes the rotating mill more lively, and the orange unpowered dust suppression tank not only takes away the dust in the belt corridor, but also makes the corridor clean and beautiful, and also makes the inspector's mood fresh and bright. The transformation of the packaging section not only creates a good working environment for the workers, but also makes the transport drivers full of praise. In spring, willow branches and peach blossoms are fragrant, and in autumn, Gesang flowers are tall and straight, and the factory area has become a beautiful garden. Sunny days are bright and beautiful, and rainy days are fresh and fragrant. The energetic worker said happily. A self-made unpowered dust suppression cover is installed on the conveyor belt at the bottom of the
clinker silo, so that the conveyor belt has no dust emission and material leakage, the dust suppression effect is obvious, the working environment is greatly improved, and the labor intensity is reduced. Cement packaging section dust suppression, quarantine measures are perfect, clean and tidy, bright milky white tone makes people feel bright.The packing machine is equipped with an isolation door, the cleaning machine is equipped with a sweeper, the loading machine is equipped with a self-made movable dust collection cover, the ground, wall and dust collection cover are upgraded and transformed in an all-round way, and the effective quarantine of the packing section and the loading section is carried out with plexiglass, so that the dust is not emitted, the material is not leaked, the packing process is easier, the loading is faster, the work efficiency of the workers is improved, and the cement transport drivers are happy.
These changes not only greatly enhance the image of the enterprise, but also protect the occupational health of the staff on the spot. It is also a kind of liberation for the staff. They can devote more time to the thinking and improvement of the work, and contribute more and better new ideas and methods to the "intelligent manufacturing" of the enterprise. Through evaluation, recognition and reward
, Minhe Company constantly encourages employees to combine their actual work and give full play to their wisdom, so as to promote the company's energy conservation and low-carbon development through minor reforms in their work. Enterprises have more than 10 small reforms and small reforms, which have won the national utility model patent technology. Many projects, such as automatic slag discharge device of fly ash and automatic spraying transformation of circulating water pool, were awarded in the system, which added new strength to the green development and energy saving and consumption reduction of enterprises.
Flowers are in full bloom, vegetation is luxuriant, from the mining area to the factory area, enterprises are green and vibrant everywhere. Technological transformation, equipment upgrading, green factories, healthy enterprises, Minhe Company is steadily advancing in the process of green development.
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