When was the earliest use of aluminum alloy building materials?

It was found that in 1827, Germany Weller co-heated potassium with aluminum trichloride to produce aluminum. After Italian physicist Volt discovered the battery in 1800, during 1808 ~ 18 10, both British chemist David and Swedish chemist Bezirius tried to separate aluminum from bauxite by current, but both failed. On the other hand, Bezirius named this unattainable metal alumien. This is written by Latin alumni. In medieval Europe, this term is the general name of convergent alum, which refers to the mordant when dyeing cotton fabrics. Later, the Latin name of aluminum and the element symbol Al came from this. 1825 Danish chemist Oster published the process of making aluminum through experiments. 1827, German chemist Ulf repeated Oster's experiment and constantly improved the method of making aluminum. 1854, German chemist De Ville reduced aluminum chloride with sodium instead of potassium, and made aluminum into ingots. Introduction to the development of aluminum industry in China Since the reform and opening up, China's aluminum industry has made great progress, and it has become a major aluminum industry country in the world, forming a relatively complete industrial system integrating bauxite, alumina, electrolytic aluminum and aluminum processing and research and development. In 2006, China Aluminum quickly turned losses into profits from the losses in 2005, achieving profits of 32.4 billion yuan and profits and taxes of more than 50 billion yuan. The rapid centralized expansion of domestic production capacity led to the first year-on-year decline in alumina imports in 10 years, and the external dependence of alumina decreased significantly compared with the previous year's 45%. In recent years, intensified sintering, pipeline leaching and Bayer process have been widely used in domestic alumina production. Eliminate backward production capacity of electrolytic aluminum self-baking bath. In 2006, the capacity of electrolytic aluminum120,000 tons 160kA and above, accounting for 83%. The backward capacity of self-baking cell has been completely eliminated, and the capacity of some small pre-baking cells has been transformed. As for electrolytic aluminum, the National Development and Reform Commission issued a notice to implement the electricity price adjustment plan from June 30, 2006. On average, the national on-grid electricity price is raised by 1 1.74 yuan/thousand kwh, and the sales electricity price is raised by 24.94 yuan/thousand kwh on average, which is equivalent to an increase of 2.494 cents per kwh. Because electrolytic aluminum consumes the most power among all industrial products, the power consumption per ton of electrolytic aluminum is as high as 1 0.5 million kwh. By adjusting the electricity price to regulate the industry, the state can make some electrolytic aluminum enterprises with strong competitive strength obtain superior living environment, while some enterprises with small scale and backward production capacity may be eliminated. In the case of rising energy prices, the major aluminum companies in the world began to turn their attention to building aluminum production bases to the Middle East and Africa where electricity prices are low. Ensuring the price competitiveness of aluminum production by reducing the electricity charges related to production costs has become the focus of attention of major aluminum companies in the world. From the perspective of domestic policy, the orientation of national industrial policy for aluminum industry is to meet domestic demand, and there will be policy differences between high-tech products and low-tech products. Therefore, for the policy and structural turning point of the industry, upstream and downstream aluminum enterprises should focus on the domestic market and expand the application of aluminum in the domestic market; Expand the application field of aluminum, improve the added value of aluminum application and enhance the technical content. In addition, aluminum production enterprises should pay more attention to the development trends of related industries and downstream industries, especially in transportation, electric power, packaging, household appliances and other industries, and at the same time increase investment in technology research and technology. General situation of aluminum profile industry in China China aluminum profile industry has become a major aluminum profile producer in the world after more than 50 years of development. As of 2007, China has more than 600 aluminum extrusion plants and about 3,500 extrusion production lines, ranking first in the world in terms of quantity, capacity and output, and becoming a major producer of aluminum extrusion materials in the world. After the adjustment of product structure and market in recent years, the number of aluminum processing plants has decreased and the distribution has gradually dispersed; The export of products has increased, making it the most important producer and net exporter of aluminum profiles in the world. Output In 2007, the express output of aluminum processed timber in China was11759,000 tons, an increase of 44.3% over 2006. The estimated output is 6.6 million tons, an increase of 36.2% over 2006. From the distribution of aluminum processing industry, the Pearl River Delta, Yangtze River Delta, Bohai Rim and other three regions, with the central region represented by Henan developing rapidly. Since the new century, the total output of the former 10 provinces in China has gradually increased, reaching 82. 1% in 2000, 84.7% in 2005, 87. 1% in 2006 and 87.63% in 2007. The output rankings of Guangdong and Henan provinces continue to maintain the top two, and the proportion is still rising. The provinces with faster output growth are Shandong and Hunan. Shandong ranked third from the sixth place in 2006, and its output was close to 65.438+0 million tons, reaching 994.8 million tons, an increase of 85.6% over 2006. Hunan province came from behind with a good result of 21.1.2000 tons, and Hebei province was squeezed out of the top ten with a relatively small increase in output. Guangdong construction aluminum profile industry has a prominent position and absolute advantage in the country. Guangdong province is a big province of aluminum profile processing and manufacturing in China, and also a big province of aluminum consumption. At present, the processing capacity of aluminum in Guangdong Province exceeds 3 million tons/year, and the comprehensive output value exceeds 654.38+000 billion yuan, which has formed an industry with obvious scale advantages and brand advantages. According to the statistics of China Nonferrous Metals Industry Association, in 2006, there were more than 560 aluminum profile factories in China and more than 2 10 in Guangdong Province. Among the top 10 enterprises in China, Guangdong Province accounts for 6, and the output of aluminum profiles in Guangdong Province accounts for about 55% of the whole country, and its market share exceeds 45% of the whole country. There are 17 famous aluminum processing enterprises in China and 10 in Guangdong, including 9 aluminum profile factories and 1 0 plate, strip and foil manufacturers. Exports In 2007, the net export volume of aluminum products in China increased by 1 10.0% year-on-year (see Table 2). Among them, the contribution of flat rolling products is obvious. Profile exports reached 845,000 tons, only increasing by 24. 1% compared with 2006, and the growth rate decreased by 56. 1% year-on-year. Mainly affected by the sluggish real estate industry in Europe and America and the cancellation of export tax rebate in July 1 country. Trend (1) Typical large-scale electrolytic aluminum enterprises include: Chinalco Lanzhou Liancheng Aluminum, Chinalco Qinghai Aluminum, Henan Jiaozuo Wanfang Aluminum, Qingtongxia Aluminum, Inner Mongolia Huolinhe Hong Jun Aluminum Group, Henan Xichuan Aluminum, Zhejiang Huadong Aluminum, etc., and aluminum processing projects or billet casting projects have been added one after another. Processing enterprises look for partners or set up factories in areas with resources, such as Bohai Aluminum, Yinbai, Huachang and other enterprises. (2) China aluminum processing enterprises actively listed for financing. Aluminum processing enterprises make use of domestic and foreign capital markets, actively carry out various forms of financing, and obtain necessary financial support for the development and growth of enterprises. Listed aluminum processing enterprises include Chinalco Northwest Aluminum, Shandong Nanshan, Zhejiang Liang Dong, Changshu Aluminum Foil and Xinjiang Zhonghe. Companies to be listed include Mingtai in Henan, Xingfa in Guangdong, Minfa in Shandong, Lufeng Aluminum Foil in Shandong, Xiashun in Suzhou and Rope Gold. (3) The successful application of high-speed train body profiles with independent intellectual property rights in 300km/h trains in China indicates that China has entered the ranks of countries that can produce 300km/h high-speed train profiles in the world. (4) The proportion of industrial profiles and high-grade energy-saving building profiles has increased. (5) Various new technologies have been applied in aluminum processing and production.