Alumina price trend in september 2022

In the last September, the price of alumina went up suddenly, and the range is more than $230. In the past 3 month, the price of alumina is stable,from the view of  international purchasing index,the price of the bulk commodity was going down,aluminium, Iron, etc. so, the international market is not only element which effect to alumina price, the price will be kept this month and early Octomber.