Effects of Iron, Silicon, Nickel and Copper on the Reaction of Aluminum Subchloride Process (Study of Extractive Metallurgy of Aluminum (III))

Kikuchi, Takeaki

doi:10.2320/jinstmet1952.35.5_527

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“…In the previous reports on the production of crude aluminum alloys, the thermal properties of raw aluminous ores(1) (2) and the fundamental problems of carborespect to the subehloride process, many reports have dealt with the equilibrium (6), reaction rate of aluminum (7) and effects of alloying elements on the subchloride reaction (8). Crude alloys obtained from the reduction of bauxite and colloidal earth have properties different from the artificially-made alloys, and relatively few reports (9) have so far been published on the subchloride process using crude alloys.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Aluminum from Crude Aluminum Alloy by the Subchloride Process

1972

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The extraction of aluminum was carried out by the subchloride process.The source material was the crude aluminum alloy prepared from colloidal earth and bauxite by the use of a 70 kVA electric furnace.The extraction ratio of aluminum increased as the size of alloy particles is smaller and the supply of aluminum trichloride is larger, and reached more than 90%Furthermore, its ratio depended not only on the aluminum content in the alloy but also on the Fe/Si ratio. The reaction ratio of aluminum trichloride decreased with increase in its supply and decrease in temperature, but it increased when the reaction zone was extended.The deposited aluminum contained small amounts of silicon and iron, in which the content of silicon was larger than that of iron. The purity of aluminum was higher than 99.6%. Furthermore, the extracted aluminum was melted and made into a thin plate by rolling.

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Section: Introductionmentioning

confidence: 99%