矿石价格依然偏弱，氧化铝供给维持高位

1. Report Industry Investment Rating - The rating for the alumina industry is "Oscillation" [1] 2. Core View of the Report - The price of ores remains weak, and the supply of alumina stays at a high level. The alumina spot price declined last week, and the futures price is expected to show an oscillatory and weakening trend. Although supply cuts have begun, the situation of oversupply remains unchanged [1][2][14] 3. Summary According to the Directory 3.1 Alumina Industry Chain Weekly Overview - Raw Materials: Domestic ore prices remained stable last week. The含税 price of Shanxi 58/5 ore was 700 yuan/ton, Henan 58/5 was 658 yuan/ton, and Guizhou 60/6 was 596 yuan/ton. Challenges such as continuous rainfall, environmental inspections, and mine resource integration have limited domestic ore supply, increasing dependence on imports. The quote for Guinea resources is around CIF 72 dollars/ton, while downstream enterprises' procurement intention is at CIF 69 - 70 dollars/ton. There is no news of Shunda's resumption of production. Newly - arrived ores totaled 348.9 million tons, including 261.3 million tons from Guinea and 97.7 million tons from Australia. The reference price for the Cape ship market from Guinea to China is 24.5 dollars/ton [1][11] - Alumina: The spot price of alumina decreased last week. The ALD northern comprehensive price was 2800 - 2870 yuan/ton, down 15 yuan/ton; the domestic weighted index was 2870 yuan/ton, down 23 yuan/ton; the port price of imported alumina was 2820 - 2880 yuan/ton, down 40 yuan/ton. The decline in the northern market slowed down, while that in the southern market expanded. The downstream's phased inquiry and purchase scale increased. There were two overseas spot transactions, which impacted the domestic market. The full cost of domestic alumina was 2877 yuan/ton, and the real - time profit was 76 yuan/ton. The operating capacity increased by 50 million tons to 9765 million tons, with an operating rate of 85.2% [2][12] - Demand: Domestic demand remained unchanged, and the operating capacity of electrolytic aluminum will be stable in the next two months, with the current operating capacity at 4425.3 million tons. Overseas, the Nordural electrolytic aluminum plant in Iceland reduced production by 21.5 million tons due to electrical equipment failure, and the current operating capacity dropped to about 11 million tons. The latest overseas operating capacity of electrolytic aluminum is 2955.1 million tons, a weekly decrease of 21.5 million tons [12] - Inventory: As of October 23, the national alumina inventory was 406.1 million tons, an increase of 4.4 million tons from last week. The inventory of large industrial chain groups was relatively stable, the inventory at the electrolytic aluminum end continued to rise, the bagged inventory at the alumina end increased slightly, the port inventory fluctuated temporarily, and the inventory in delivery warehouses, public warehouses, stations, and transit increased [13] - Warehouse Receipts: The registered warehouse receipts of alumina on the Shanghai Futures Exchange were 221257 tons, a decrease of 5 tons from last week. The futures price of alumina continued to be weak. The price of Guinea ore in the fourth quarter is about 73 dollars, and the cash cost of alumina plants in Shanxi and Henan is 2900 - 3000 yuan/ton. Some alumina enterprises in these regions have started to incur losses, and supply cuts have begun, but the oversupply situation remains unchanged. The futures price is expected to show an oscillatory and weakening trend, and the downward space is being squeezed [14] 3.2 Weekly Summary of Key Events in the Industry Chain - The import profit of alumina has been narrowing. As of October 24, the Australian alumina quote was about 314 dollars/ton, a decrease of 5 dollars/ton from October 17. The estimated cost of reaching the northern ports in China is about 2865 yuan/ton, a week - on - week increase of 5 yuan/ton. The import cost is basically the same as the domestic northern quote [15] - On October 24, a Yunnan electrolytic aluminum enterprise tendered to purchase 1 million tons of spot alumina at a delivered - to - plant price of 3060 yuan/ton, a decrease of 35 yuan/ton from the previous tender on October 20 [15] - On October 23, a northwest aluminum plant tendered to purchase less than 1 million tons of spot alumina at a delivered - to - plant price of 3015 - 3020 yuan/ton, with a narrow fluctuation of about 10 yuan/ton compared to the previous tender on October 15 [15] 3.3 Monitoring of Key Data in the Upstream and Downstream of the Industry Chain 3.3.1 Raw Materials and Cost Side - Multiple charts are provided to show data such as the price of domestic and imported bauxite, domestic bauxite port inventory, port shipping volume of major bauxite - importing countries, sea - floating inventory of major bauxite - importing countries, domestic caustic soda price trend, domestic steam coal price trend, and alumina production costs in various provinces [16][19][22] 3.3.2 Alumina Price and Supply - Demand Balance - Multiple charts are presented to show data including domestic provincial alumina spot prices, imported alumina prices, domestic electrolytic aluminum spot prices, the futures price ratio of electrolytic aluminum to alumina on the Shanghai Futures Exchange, and the weekly supply - demand balance of domestic alumina. A table also shows the historical data of alumina and electrolytic aluminum operating capacity and supply - demand differences from June to October 2025 [35][37][42] 3.3.3 Alumina Inventory and Warehouse Receipts - Multiple charts are provided to show data such as the alumina inventory of electrolytic aluminum plants, the alumina inventory of alumina plants, domestic alumina yard/station/in - transit inventory, alumina port inventory, total domestic social alumina inventory, the quantity of alumina warehouse receipts and open interest on the Shanghai Futures Exchange, and the ratio of open interest to warehouse receipts on the Shanghai Futures Exchange [45][48][50]