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How Global Power Shortages Affect the Primary Aluminium Industry

A prerequisite for the manufacture of 7-series aluminum alloys is the manufacture of high-purity primary aluminum. AdTech has been focusing on providing a one-stop service for molten aluminum purification for many years. Our main products include degassing units, ceramic foam filters, launder systems, caster tips, and more. Please email us via sales@adtechamm.com if you need ceramic foam filters. […]
2022-09-13

How to optimize rotary jet degassing process for degassing units part B

Figure 2 shows the liquid phase velocity distribution in a certain longitudinal section (phase angle θ= 0°.) in the degassing unit with different clearances from the bottom, where the degassing unit is square and the bubble diameter db = 1.0 mm. Since the distribution of the liquid phase velocity field is investigated, only the liquid phase section of the vanadium height where the aluminum melt is located is displayed. […]
2022-09-13

CFD analysis to improve degassing units for degassing with nitrogen

The structure of the rotary jet degassing unit used in the calculation is shown in Figure 1. The degassing unit is a square groove with a cross-sectional dimension of 468 mm X468 mm. […]
2022-09-13

How to optimize rotary jet degassing process for degassing units part A

In the spray degassing units. However, there are few literatures on the numerical simulation of the rotary jet degassing process. The literature adopts the mixture model, which cannot fully consider the coupling effect between gas and liquid, and the research content is mainly based on the cylindrical degassing unit which has little guiding significance for practical application. […]
2022-09-13

How degassing units working

​The solubility of hydrogen in aluminum is determined by the partial pressure of hydrogen in the gas phase in contact with the aluminum melt. When the hydrogen partial pressure in the equilibrium state corresponding to the hydrogen content in the aluminum melt is greater than the hydrogen partial pressure in the actual gas in contact with the aluminum melt, the hydrogen in the aluminum melt will diffuse into the gas phase to achieve hydrogen removal. This is the principle of hydrogen removal by bubble flotation in the degassing unit. […]
2022-09-07

Aluminum degassing method

Although pure refining agent purification can better remove oxidized slag inclusions, and can also remove some gases, it is not thorough and will also bring flux slag inclusions. The degassing unit effect of vacuum treatment is very good, but the effect of removing impurities is very small, and the cost of equipment and operation is expensive. […]
2022-09-07

Solutions of aluminum rods casting problem

The main reasons for the formation of bubbles on the surface of aluminum rods are insufficient degassing with nitrogen in the molten aluminum furnace or insufficient water content in the refractory material. The solution is to strengthen the degassing refining and reduce the hydrogen content as much as possible. Aluminum smelting furnaces and stationary furnaces should be fully dried after repairs. […]
2022-09-07

How to select suitable ceramic foam filter plates to improve the cleanliness of aluminum melt

Ceramic foam filter filtration is the last step in the purification of aluminum melt, and it is particularly important to choose the second generation of ceramic foam filter plates. What needs to be specially pointed out is to prevent the secondary pollution of the melt that may occur during the process of solidification and molding after the aluminum melt leaves the filter box. In this process, the sintered flow tank, front box, distribution plate, and hot cap made of fused silica ceramics with long life, high strength, non-stick aluminum, and good thermal insulation are used, and dehumidified and cleaned in time to eliminate possible pollution sources. , to ensure the cleanliness of the aluminum melt can not be ignored. […]
2022-09-06

The filtering theory of ceramic foam filters

The State Key Laboratory of Tsinghua University has established a three-dimensional physical model and a two-phase flow model for the filtration mechanism of the ceramic foam filter and carried out simulation calculations, which are very helpful for our research on the filtration and purification of molten aluminum. The process of filtration and purification of molten aluminum by ceramic foam filter plate is very complicated, which is a complex process of high-temperature physical chemistry and metallurgical dynamics. […]
2022-09-06

Characteristics of a new generation of ceramic foam filter materials

The mechanism of ceramic foam filter plate filtering and purifying aluminum melt The mechanism of ceramic foam filter plate filtering and purifying aluminum melt is generally described as diffusion interception and inertial collision interception or screening mechanism, sedimentary layer, and deep bed filter mechanism. […]
2022-09-06

What is the ceramic foam filter?

The ceramic foam filter is a porous ceramic product with an open porosity of "80% to 90%", a density of "0.3g/cm3 to 0.6g/cm3", a unique three-dimensional network framework, and a structure of interpenetrating pores […]
2022-09-05

Aluminum alloys for the aviation industry need degassing unit and ceramic foam filters

At 14:22 on July 24, 2022, China's Long March 5B Yaosan carrier rocket carrying the Wentian experimental module was ignited and launched on time at the Wenchang Space Launch Site in Hainan Province. About 495 seconds later, the Wentian experimental module and the rocket were successfully separat […]
2022-09-01

The use of aluminum dihydrogen phosphate in the ceramic foam filter plate

For the preparation of foam ceramics, it is expected to realize the low-cost preparation of foam ceramics. At present, there are few reports at home and abroad on the preparation of foamed ceramics by the aluminum dihydrogen phosphate bonding method. Using aluminum dihydrogen phosphate as a binder to prepare foamed ceramics, the obvious effects of aluminum dihydrogen phosphate content […]
2022-08-31

The material and usage requirements of the launder

With the continuous development of castable material technology, new types of castable materials continue to emerge, so that the products such as launders, filter boxes, and diverter plates prepared from them are also continuously optimized in terms of thermal insulation, density, and other properties. 3 In recent years, castables The launder has been recognized and widely used in the market, and the production process are relatively simple, so it has a tendency to replace the ceramic fiber material as the leading product in the aluminum casting market. […]
2022-08-31

Classification of launder systems

According to the structure, the launder systemis divided into a straight flow slot, an oblique flow slot, a split flow slot, a corner flow slot, a lifting flow slot, etc., and they cooperate with each other to make the induction melting furnaceand the casting platform. The aluminum melt […]
2022-08-29
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