my country is a major producer of magnesium. As a lightweight material, magnesium alloy materials have received widespread attention in the industry for their production processes and innovative applications. This article will focus on the analysis of the upstream and downstream connections of magnesium alloy materials and the expansion of application areas.

my country's magnesium metal industry originated in 1952. After more than 60 years of development, the scale of the industry has continued to expand. In recent years, the magnesium material industry has gradually developed in the direction of innovation, greenness, coordination and sustainability. At the same time, companies related to magnesium materials are developing new ways to become bigger and stronger in order to improve the competitiveness of the industry.

Magnesium ingot production capacity and enterprise production

The current production technology of magnesium metal is mainly divided into electrolysis method and Pidgeon method, and the latter accounts for the main market share. The Pidgeon method of smelting magnesium refers to the method of smelting magnesium by the thermal reduction method in which the calcined dolomite is reduced to metallic magnesium with a ferrosilicon reducing agent in a reduction furnace heated outside the reduction tank. Among them, in Pidgeon production, my country's magnesium ingot resources are concentrated in Shanxi, Shaanxi, Ningxia, Xinjiang, Inner Mongolia and other provinces. Fugu County in Shaanxi Province and Wenxi County in Shanxi Province are the main magnesium ingot producing areas in China. Data show that the actual output of magnesium ingots in my country in 2018 was about 786,500 tons, of which the actual output of Ningxia, Shaanxi, Inner Mongolia, Xinjiang, and Shanxi were about 22,350 tons, 527,900 tons, 37,400 tons, 41,300 tons and 157,500 tons, respectively. , Accounting for 2.84%, 67.12%, 4.76%, 5.26% and 20.02% of the total output.

Shaanxi Tianyu Magnesium Industry Group Co., Ltd. has built a magnesium and magnesium alloy circular economy industrial base. The projects that have been completed and put into operation include: an annual output of 50,000 tons of metal magnesium production line, an annual output of 10,000 tons of magnesium alloy ingot production line, and an annual output of 5,000 tons of magnesium Alloy die-casting production line; supporting projects include an annual output of 1.2 million tons of coal washing project, an annual output of 1.2 million tons of blue charcoal production line, an annual output of 50 million magnesia slag free-burning brick production line. Among them, magnesium-related businesses account for more than half of the company's total business. While expanding production capacity, the company has environmental protection facilities such as environmental protection dust removal, sewage treatment, waste disposal, and exhaust gas desulfurization that match the project.

Shanxi Wenxi Yinguang Magnesium Industry Group adopts a mining model that integrates mining, primary magnesium smelting, and deep processing of magnesium alloys. As the company's main business, magnesium and magnesium alloys have an annual production capacity of 100,000 tons of primary magnesium, 30,000 tons of magnesium alloys, and 20,000 tons of magnesium deep-processed products. In addition, the magnesium alloy deep processing route covers a wide range. The Group has made continuous efforts for the transformation and upgrading of the magnesium industry. Seven deep processing production lines have realized industrialized production (including the entire industrial chain of die-casting, extrusion, forging, rolling, and casting).

Magnesium alloy leading enterprises technology upgrade, deep processing field multi-faceted progress

Qinghai Salt Lake Industry Co., Ltd. is adjacent to the Chaerhan Salt Lake, where China’s largest soluble potassium and magnesium salt deposits are located. The lake is rich in natural resources such as potassium, sodium, magnesium, boron, lithium, and bromine. The company currently adopts the magnesium smelting process of reverse flotation cold crystallization point to decompose brine, and started the salt lake magnesium metal integration project, with an annual output of 10,000 tons of magnesium metal equipment.

Yunhai Metal focuses on the production of magnesium and magnesium alloys, maintaining the country's largest magnesium alloy production and sales volume, and is also one of the world's largest magnesium alloy manufacturers. At present, a complete magnesium industry chain of "Dolomite Mining-Primary Magnesium Smelting-Magnesium Alloy Smelting-Magnesium Alloy Processing-Magnesium Alloy Recycling" has been formed. The company has 50 million tons of ore reserves, 16,000 tons of ferrosilicon and 100,000 tons of primary magnesium production capacity. It can provide large quantities of raw materials for alloy production; in the middle of the industry chain, it has a magnesium alloy production capacity of 170,000 tons, which is in the global magnesium alloy industry. The market share is 30%; in the downstream, the company currently has a production capacity of 8,000 tons of die-casting parts and an annual production capacity of 4,000 tons of extrusion parts.

Zhejiang Wanfeng Aowei Steam Turbine Co., Ltd., in conjunction with China Automotive Technology Research Center, has achieved the lead in the three industries of aluminum wheels, environmental protection coatings, and magnesium alloy materials.

Downstream demand grows steadily, and magnesium alloy application business continues to expand

Magnesium alloys are widely used in automobiles, 3C fields, aerospace, medical and other fields. The data shows that in the downstream demand distribution, the automotive industry accounts for the largest share of 75%, followed by the 3C field, accounting for 15%, and aerospace and other industries accounting for 10%.

At present, energy conservation and emission reduction and fuel consumption reduction are vigorously promoted in China. As an effective measure for vehicle energy conservation and emission reduction, automobile lightweight has become the current development trend of the automobile industry. Cars can be lightened by using magnesium alloy materials to achieve the effect of energy saving and emission reduction. With the further development of automobile lightweight, the use of magnesium alloy materials in the automobile field will continue to rise.

Based on the advantages of light weight, magnesium alloy materials can greatly improve the aerodynamic performance of aircraft and significantly reduce the structural weight. Many parts of military aircraft are made of them and are widely used in the aerospace field. At present, the civil motive parts, gearboxes, propellers, rockets, missiles and satellites of military and civilian aircraft are all made of magnesium alloy. With the continuous improvement of the performance of magnesium alloy production technology, the scope of application is expected to be further expanded.

Concluding remarks

In recent years, driven by energy saving and environmental protection requirements, the overall magnesium and magnesium alloy industry is striving to continuously transform from high output to high quality. The stable supply of magnesium alloy materials in my country, the continuous improvement of the production technology of magnesium alloy enterprises, and the steady growth of downstream demand will inevitably promote magnesium alloy materials to play an important role in future production and application.

Link to this article： Analysis on the development of magnesium alloy industry chain

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