Rongsheng refractory manufacturers’ Non-Stick Aluminum Castables Price needs to be determined after specific analysis according to specific furnace conditions. Secondly, we also need to understand non-stick aluminum castables.
Non-Stick Aluminum Refractory Castables for Aluminum Melting Furnaces
Composition of non-stick aluminum castables. Rongsheng’s non-stick aluminum castables are made of high-purity raw materials (mullite, andalusite, sillimanite) and ultrafine powder. It has high bulk density, high strength, and good thermal shock stability. By adding an appropriate amount of “non-wetting agent”, such as high-purity chromium oxide, compound barium salt, compound zinc salt, etc., the wettability of aluminum, alloys, and slag to refractory materials can be greatly reduced. Improve the corrosion resistance, erosion resistance, non-sticking aluminum, and slag function of the refractory material to the aluminum liquid containing chemical components such as salt and co-solvent. That is to prevent aluminum and alloys and slag from penetrating into refractory materials, prolonging the life of the furnace lining.
Application of non-stick aluminum castable. Suitable for melting furnaces, static furnaces, launders, and aluminum cladding linings. In the aluminum melting furnace, it is mainly used in the furnace wall, furnace bottom, degassing box, launder, orifice, front box, and other parts of the aluminum melting furnace.
Performance of non-stick aluminum castables. Non-stick aluminum castable is a new type of composite refractory castable, which is a special material for the aluminum processing industry. It combines the characteristics of organic and inorganic binders and adds a certain amount of new composite materials that are insoluble in aluminum. It can directly separate the refractory material and the aluminum liquid, so a certain amount of anti-radiation material and neutral material is added to promote the low-temperature sintering strength and play a good inhibitory effect. Effectively improve the service life of refractory materials.
Anti-Seepage Castable for Aluminum Melting Furnace
The anti-seepage castable series products have the characteristics of high strength, low thermal conductivity, and strong penetration resistance. It can prevent the penetration and erosion of molten aluminum and electrolyte, thereby prolonging the service life of the electrolytic cell. At the same time, it prevents the electrolytic tank from increasing the power consumption of the electrolytic cell due to the increase in the thermal conductivity of the electrolyte entering the refractory heat insulation layer. The anti-seepage castable can react with the alkali metal ions in the electrolyte to form an isolation film during use, so as to achieve the purpose of anti-seepage.
The anti-seepage material is quick and convenient to construct and can heat up quickly without baking. It is mainly used in the bottom of the electrolytic cell to replace refractory bricks and the Al2O3 layer as the anti-seepage layer. It is a commonly used refractory material for aluminum melting furnaces.
According to the design and material selection of the electrolytic cell, the anti-seepage castable should ensure that the temperature inside the carbon cathode material is greater than 850°C and that the thermal shock resistance is good. The anti-seepage material is used as a barrier layer between the carbon brick and the heat insulation layer to prevent the penetration of harmful substances.
The anti-seepage castable is used between the carbon brick on the side wall of the aluminum electrolytic cell and the heat insulation layer, which can prevent the penetration of substances such as Na and NaF, and also protect the heat insulation layer. The critical particle size of the anti-seepage castable is 3mm, and the mass ratio of bone powder is about 6:4, which is directly laid on the heat insulation layer at the bottom of the tank.
The main properties of anti-seepage castables are heated to 950°C in an electric furnace and the holding time is 96h. The sealed crucible cools down to room temperature naturally with the furnace. Take out the crucible, cut the section for observation and analysis, and measure the remaining height H2 after the anti-seepage material reacts with cryolite. Calculate the penetration depth (H1-H2), which is essentially the height of the reaction layer, which is the permeability resistance of the material.
But anti-seepage castables are also useful in lead or copper smelting industries. The anti-seepage materials used in different furnaces have different materials, but no matter what furnace is used, thermal expansion and contraction, stable volume, and good thermal shock are the keys to anti-seepage.
How does the non-stick aluminum anti-penetration castable work in aluminum smelting furnaces?
Whether the non-stick aluminum anti-penetration castable is good or not is mainly determined by two factors: ①The damage mechanism of the aluminum smelting furnace lining; ②The characteristics of the non-stick aluminum anti-penetration castable. As long as the non-stick aluminum anti-penetration castable can meet the working environment of the lining of the aluminum smelting furnace, a good use effect can be achieved.
The non-stick aluminum anti-seepage castable is made of super-grade high-alumina bauxite clinker and powder as the main raw materials. Add pure aluminate cement binder, non-stick aluminum powder, kyanite, anti-shrinkage agent, explosion-proof fiber, and other admixture materials to configure the mixture. It can be poured into a whole inner lining, or it can be poured into a prefabricated block for masonry.
The advantages and characteristics of non-stick aluminum impermeable castables: high-temperature resistance, high bulk density, low porosity, and high-temperature structural strength. Strong wear resistance, strong volume stability at high temperatures, and resistance to rapid cooling and rapid heating. Strong thermal shock resistance, non-stick aluminum liquid, and aluminum slag, and strong chemical corrosion resistance.
Therefore, it is feasible to use non-stick aluminum impermeable castables on aluminum smelting furnaces. It is mainly used for direct contact with molten aluminum, such as aluminum flow tanks, aluminum outlets, aluminum flow tanks, and other parts.
Rongsheng Monolithic Refractory Manufacturer
Rongsheng refractory material manufacturer, an environmentally friendly fully automatic monolithic refractory castable factory, provides high-quality refractory castable concrete products for various industrial kilns. According to the needs of aluminum melting furnaces, our technical team can customize the design of amorphous refractory materials such as non-stick aluminum castables for aluminum melting furnaces according to the actual working needs of aluminum melting furnaces. Serving customers, saving production costs for customers, and improving customers’ economic benefits are the starting point of Rongsheng refractory manufacturers. Contact us for free quotes and samples of refractory castable products for aluminum melting furnaces.
