22 10月 Molten Aluminum Filter Siberia Aluminium
Molten Aluminum Filter Siberia Aluminium is a porous ceramic with a high porosity (80%～90%) with a three-dimensional network structure. It has the advantages of low density, high strength, high temperature resistance, corrosion resistance, and good filter adsorption.
In recent years, due to the development of the third-generation Cff aluminum filter (CFF, that is, ceramic foam filter), the quality of metal smelting products has been greatly improved, and the performance of the product has also been greatly improved.
Molten Aluminum Filter Siberia Aluminium is one of the most widely used industries in the production of aluminum casting industry. Its function is to transform the turbulent and agitated metal liquid through the pores in the ceramic foam into a stable, homogeneous and pure metal liquid.
Therefore, the percentage of waste castings caused by casting defects such as non-metallic inclusions is significantly reduced, thereby reducing production costs.
Aluminium Cff uses polyurethane foam as a carrier and is immersed in a ceramic slurry composed of ceramic powder, binder, sintering agent, and suspending agent.
Then squeeze out the excess slurry so that the ceramic slurry is evenly covered on the carrier frame and becomes a wet object.
The green body is dried and sintered at high temperature. This process is also called organic foam impregnation, and it is now a common household foam ceramic process.
Alumina ceramic foam filter is an important branch of the three major types of ceramic foam (alumina, silicon carbide, and zirconia), and it is also the earliest type of ceramic foam. It is widely used in aluminum and alloy casting industry.
Aluminum smelting process
The process sequence includes the feeding process, the melting process, the refining process and the draining process in turn. There is a cyclic process between the liquid release process and the melting process.
The aluminum melting furnace has a supply channel, the supply channel communicates with the smelting chamber, and the smelting chamber communicates with the refining chamber.
The refining chamber is connected with the liquid outlet, and the liquid outlet respectively has a liquid outlet and a circulation channel, and the circulation channel is connected with the waste aluminum melting chamber.
The waste aluminum smelting chamber communicates with the slag removal chamber, the slag removal chamber communicates with the heating filter chamber, and the heating filter chamber communicates with the smelting chamber.
Dubal ceramic foam filter is also a key element for filtering molten aluminum.
By increasing the circulation process, the process chain is increased, and the molten aluminum melting process is adjusted through circulation.
The flow time and path of molten aluminum are also increased accordingly. Liquid aluminum is more pure, and impurities are filtered deeper.
At the same time, the method is supplemented by an aluminum melting furnace, thereby reducing the content of impurities in the aluminum liquid when the liquid is discharged.
Zhitong Finance APP learned that Rusal United Corporation (“Rusal”) (00486), one of the world’s leading companies in the aluminum industry, recently stated that it may restrict aluminum exports after the Russian government starts to impose export taxes and fees next month.
Roman Andryushin, the company’s head of domestic and Chinese market sales, said that the company exports about 3 million tons of aluminum each year. This year’s exports may be reduced by hundreds of thousands of tons, because the taxation will make some exports unprofitable.
Russia announced in June that it would impose a tax of at least 15% on exports of steel, nickel, aluminum and copper (tax rates vary) from August 1 to curb soaring commodity prices and boost national treasury assets. The Russian government stated that the taxation that lasts until the end of the year will be temporary, and that more sustainable measures will be sought afterwards.
Andryushin believes that the taxation is unfair, because the company will invest billions of dollars to modernize the smelter, and the tax will not significantly reduce local prices, because aluminum accounts for the cost of the Russian construction industry (including state-owned projects) The ratio is relatively small. He also pointed out that Rusal supplies high value-added products to the Russian domestic market and has signed long-term sales contracts.
It is reported that Rusal is unlikely to pass on tax costs to customers, partly because it cannot include these taxes in most long-term agreements. Andryushin said: “If we do this, the market may not buy it, and we will not pay for it. ”
Andryushin said that the taxation may mean that Rusal is considering suspending some unprofitable production, and the start of the new Taishet project may be slower than previously expected.