氧化铝连续主力合约日内涨2%，现报2822.00元

Group 1 - The core point of the article is that the main contract for alumina has increased by 2% in a single day, currently priced at 2822.00 yuan [1] Group 2 - The report indicates a significant movement in the alumina market, reflecting potential trends in commodity pricing [1] - The increase in alumina prices may influence related industries, including aluminum production and other sectors reliant on alumina [1]