What is aluminum melting?
aluminum melting is an industrial process used to produce metal. The way it is done depends on whether aluminum is produced by the primary process, including a bauxite or secondary process, including scrap. The primary process is the most complex and more energy sector.
aluminum production is generally divided into two categories, primary and secondary. The primary aluminum melting includes a process that begins with extraction of metal from bauxite ore, the type of rock most commonly found in tropical and subtropical climate. This process begins first by obtaining a raw material known as alumina of bauxite.
To achieve this, the ore that has been sorted and the ground is mixed with sodium hydroxide under high temperature and high pressure conditions. This step is known as digestion and the machine used is often called Digestest. Agitation and conditions inside the digestor result in the separation of sodium aluminates and bauxite residues. The residues tend to fall to the bottom of the mixture. Then it is necessary to separate the residues from the AlumiNY achieved by filtering.
When aluminum is filtered for the first time, it can be found in a crystallized form. These crystals are subjected to a process known as clotting, which includes the use of alumin hydrate to create a cleaner form of aluminum oxide crystals. The next step is calcination, which includes repayment of dirt and removal of water from the crystals. This part of the process requires the use of high heat levels and eventually results in white powder, which is an alumina.
At this point, aluminum melting will include a powder transfer to a metal mold. This requires a large amount of direct current (DC) that is performed in a counterpoint known as a reduction pot. The metal, which is produced in the reducing vessel gene, settles on the bottom and is regularly suspended. The melting is usually a continuous process.
Secondary melting of aluminum is slightly different because it involves the extraction of metal from scrap or sideProducts known as Dross, which are formed during primary aluminum melting. When recovery is simply from scrap, the material usually melts in gas reverberation, oil reverberation or furnace. Chemical solutions are then used to remove dirt and producing aluminum of various purity. If Dors is connected, it must first be processed in a similar way to Bauxit ore before the metal is extracted by the heat source.
The primary melting of aluminum is a generally energy -intensive process. Secondary melting requires only a fraction of the energy needed for the primary process. The aluminum produced is usually not 100 % clean. At best, it can be 99.7 percent net.