History about Aluminum08:00
Aluminum is a chemical element in the boron group with symbol Al and atomic number 13. Itis a silvery white, soft, ductile metal. Stable aluminum is created when hydrogen fuses withmagnesium either in large stars or in supernovae. Aluminum is used in many fields and youcan find the information inaluminum extrusion catalogue. What do you know aboutaluminum’s history?
Ancient Greeks and Romans used aluminum salts as dyeing mordants and as astringents fordressing wounds; alum is still used as a styptic. The metal was first produced in 1825 in animpure form by Danish physicist and chemist Hans. Friedrich conducted a similar experimentin 1827 by mixing anhydrous aluminum chloride with potassium and yielded aluminum. He isgenerally credited with isolating aluminum. Further, Pierre Berthier discovered aluminum inbauxite ore and successfully extracted it. Frenchman Henri Etienne Sainte-Claire Devilleimproved W?hler's method in 1846, and described his improvements in a book in 1859, chiefamong these being the substitution of sodium for the considerably more expensive potassium.
Prior to commercial electrical generation in the early 1880s and the Hall-Héroult process inthe mid 1880s, aluminums were exceedingly difficult to extract from its various ores. Thismade pure aluminums more valuable than gold. Bars of aluminums were exhibited at theExposition Universelle of 1855. Aluminum was selected as the material to be used for the100 ounce capstone of the Washington Monument in 1884, a time when one ounce cost thedaily wage of a common worker on the project. Hall's process, in 1888 with the financialbacking of Alfred E. Hunt, started the Pittsburgh Reduction Company today known as Alcoa.Héroult's process was in production by 1889 in Switzerland at Aluminum Industries, nowLuxfer Group and Alcoa, by 1896 in Scotland. By 1895, the metal was being used as abuilding material as far away as Sydney, Australia in the dome of the Chief Secretary's Building.
Many navies have used an aluminum superstructure for their vessels; the 1975 fire aboardUSS Belknap that gutted her aluminum superstructure, as well as observation of battledamage to British ships during the Falklands War, led to many navies switching to all steelsuperstructures. The Arleigh Burke class was the first such U.S. ship, being constructedentirely of steel.
aluminiumsupplier.com.cn formerly known as Guangdong Xingfa Aluminum Profile Factorywas established in 1984. As one of the earliest enterprises engaged in aluminum profile inMainland China, the Company has become a famous and large-scaled enterprise specializedin production of aluminum profiles for both architecture and industry, with its yearly capacityof 150,000 tons. The Company is the production base for aluminum alloy designated by theMinistry of Construction of China, and it was awarded "No.1 of Top-Ten National AluminumProfile Enterprises".