Tag Archives: Purification of Aluminium

The presence of gas (usually hydrogen) and other particles in gravity or sand castings can cause bubbles, which can severely impair the appearance and performance (overall strength and density) of the finished product. This makes effective metal degassing critical to the quality of the casting process. Traditionally, graphite is the most widely used material for […]

Degassing with Nitrogen has been gradually eliminated in the modern aluminum industry, fluxes are generally used together with nitrogen. Use active gas chlorine as a purifying agent (chlorination method). In the chlorination method, when the chlorine gas is passed into the aluminum liquid, a lot of abnormally small bubbles are generated, which are fully mixed […]

Degassing technology is one of the main components of quality assurance in foundry industry. The quality of cast material depends largely on the number of defects. One of the main defects in near net shape casting is porosity. When melting aluminum scrap, the process of Degassing Technology is very important to produce high quality aluminum […]

Rotary Degassing Unit is used to complete degassing operation. Inert gas is introduced to produce efficient small bubbles. Short processing time and reduced gas use can save a lot of cost. The degassing treatment of the melt causes the injector immersed in the melt to rotate so that the scavenging gas (usually inert gas) is […]

Rotary degassing equipment is an advanced melt purification method. The purification effect is good and does not pollute the environment. The purified melt can enter the casting machine or rolling mill directly without secondary pollution, which improves the production efficiency. The purity of molten aluminum directly affects the processing quality of aluminum, so crude aluminum is […]

Degassing Aluminum with Nitrogen: Nitrogen enters the bottom of the aluminum liquid through a certain process device. The nitrogen floats up from the bottom of the aluminum liquid in the form of bubbles. Due to the hydrogen partial pressure difference at the contact interface between the bubble and the molten aluminum, the partial pressure of […]

Rotary Degassing Aluminum works by rotating nozzle of degassing unit. The rotating nozzle has a rotating shaft, a rotor with blades (connected to the rotating shaft), and a stator with blades. Their interaction can provide the desired bubble shape for the melt. The refined gas emerges into the aluminum melt through the small gap between […]

After the adjustment of the molten metal composition is completed, the next step is the refining process of molten aluminum. The purpose of aluminum alloy refining is to obtain high cleanliness and low gas content alloy liquid after taking degassing and impurity removal measures. There are several methods for refining: Add chloride (ZnCl2, MnCl2, AlCl3, […]

The quality of the aluminum melt is very important, it greatly affects the subsequent processing performance and the quality of the final product. Therefore, all countries in the world attach great importance to the online purification of aluminium. Reasons for Aluminum Pollution There are many reasons for aluminum pollution. On the one hand, in the […]