Prediction and potential analysis of green metallurgy innovation development situation

(3) Innovation and development potential of non-ferrous metallurgy

At present, China's non-ferrous metallurgy industry has achieved remarkable results in structural transformation and upgrading. Through the transformation and upgrading of industrial structure, the expansion of inefficient production capacity has been restrained, and the transfer of non-ferrous metal production to clean energy rich areas such as hydropower (such as Yunnan Province and Sichuan Province) has been encouraged. The production situation that relies on coal has changed significantly, and the expansion of product applications has provided new momentum for the development of the industry, such as "aluminum wood" in the construction field, "aluminum instead of steel" in the transportation field, and "aluminum instead of plastic" in the packaging field.

The energy conservation and emission reduction potential of the non-ferrous metallurgy industry has been continuously released, driving the continuous reduction of the proportion of energy consumption, and the comprehensive power consumption of aluminum ingots and the comprehensive energy consumption of crude copper smelting have reached the world advanced level. The new emission reduction technology has improved the energy-saving emission reduction indicators, such as the inert anode to increase the current efficiency of electrolytic aluminum to 97%, and the removal effect of impurity elements to 80%. In the lead and zinc smelting industry, the SO2 production intensity decreased by 97% and the particulate matter production intensity decreased by 90% [23], and the lead smelting oxygen-enriched smelting + direct reduction process increased the clean production level to 90%.

The rapid development of the recycled non-ferrous metal industry has gradually formed a new pattern of "original + regeneration" coordinated development. The development and application of new materials have broken some of the "stuck neck" technologies of foreign blockades, such as high-purity metal, 8-inch silicon wafers, lead frame materials, etc.

Looking at the future, the development potential of the non-ferrous metallurgy industry depends on the following aspects. Research and development of recycled metal utilization technology, deepen the recycling of metal resources, and resolve the shortage of primary resources [7]. Promote industry energy innovation technology to maximize energy conservation and reduce energy consumption. We will optimize industrial structure and cluster links, promote the application of cutting-edge technologies such as the Internet, big data, artificial intelligence, fifth-generation mobile communications (5G), edge computing, and virtual reality, drive the use of high value-added resources, and promote the integrated development of upstream and downstream industries. Improve the key technology system of metallurgy, and essentially break through the bottleneck links that restrict the development of the industry.

(4) Metallurgical industry green development stage and path

According to the green development goal of metallurgical industry, the characteristics and mission of different stages of green metallurgical development are identified, and the four-stage division of green development of metallurgical industry in China is proposed (see Figure 3). In the different stages of the development of the metallurgical industry, the corresponding green development measures are taken to achieve the goals of each stage, making the metallurgical industry smoothly turn to innovative, low-carbon, green and intelligent development.

Second, green metallurgy innovation and development measures

(1) Strengthen the strategic position of metallurgical power and optimize the development ideas of green metallurgical industry

1. Rely on superior resources and clean energy gathering places to reconstruct the layout of the metallurgical industry

Encourage the transfer of metallurgical production capacity to renewable energy rich areas such as wind energy, solar energy (Northwest region), hydropower (Southwest region) or metal resources/renewable resources rich areas; Combined with the construction of the industrial chain base, the metallurgical industry (such as aluminum electrolysis) can be laid out near the coastal nuclear power enterprises (such as Fuqing City, Fujian Province). Strengthen the regional agglomeration effect of resources and energy, strengthen the investigation and evaluation of strategic minerals such as lithium, cobalt and ionic rare earth based on the domestic market, and take into account the exploration of bulk minerals in short supply such as iron and copper; Strengthen the prospecting of key metallogenic zones and accumulate reserves; Accelerate the prospect survey and prospecting prediction of key metallogenic zones such as copper, nickel and lithium in southwest and northwest China, and improve the ability to secure strategic mineral resources; We have actively carried out exploration in the deep and peripheral areas of old mines to form a number of key mineral resource continuity areas. Adjust the product structure and capacity layout, reasonable extension of the industrial chain, such as the future layout of steel mills can be divided into two categories: blast furnace, converter long process and plate production of large-scale joint enterprises, mainly arranged in the coastal deep water port area; The short process steel mill of all scrap electric furnace, which mainly produces long materials for construction, is mainly arranged around the city to absorb social waste such as scrap steel, abandoned electricity, and urban water.