Primary aluminum, which can be called primary aluminum, is the liquid aluminum siphoned from the aluminum electrolyzer to the ladle (ladle). Then it is poured into the mixing furnace by weighing and pouring, after purification, it is cast into small aluminum block, and it can also be melted into the alloy for pressure processing in the mixing furnace. The ingot block made of purified raw aluminum is called aluminum ingot for remelting. According to GB / t1196-2008, there are 8 kinds of aluminum ingots for remelting. Each package of raw aluminum must be weighed. , fill in the production card, or do it automatically. The production of these raw aluminium is accurate.