China Ceramic Foam Filter is used in the smelting and recycling of aluminum scrap and is one of the keys to the alloying, purification and refining of aluminum scrap smelting process.
The purpose of waste aluminum pretreatment technology is to realize the mechanization and automation of waste aluminum separation, remove metal impurities and non-metal impurities to the greatest extent, and effectively separate waste aluminum.
When cutting metal castings, the chips account for about 20% of the weight of the casting, up to about 30%. The aluminum scraps in the product recovery process can reduce production costs and have good economic benefits.
Reduce the difficulty of removing impurities and adjusting the composition in the smelting process, and comprehensively utilize the alloy composition in the aluminum scrap and can be adjusted.
The most ideal way to classify waste aluminum is to classify waste aluminum into several categories based on the main alloy components, such as alloy aluminum, aluminum-magnesium alloy, aluminum-copper alloy, aluminum-zinc alloy, aluminum-silicon alloy, etc.
The charging principle is
1. The order of loading materials should be reasonable. The correct charge depends on the nature and conditions of the charge added, and the fastest melting speed should also be considered
When loading, first install small or thin scraps, aluminum ingots and large pieces in the middle, and finally install the intermediate alloy. A master alloy with a lower melting point is installed in the lower middle layer. The charge should be evenly distributed in the molten pool to prevent overweight.
Small pieces or thin plate materials are installed in the lower layer of the molten pool, which can reduce combustion loss and protect the furnace body from direct impact and damage of large pieces of material. Some master alloys have high melting points. For example, AL-NI and AL-MN alloys have a melting point of 750-800°C and are installed in the upper layer. Due to the high temperature in the upper part of the furnace, they melt easily and have enough time to diffuse. Conducive to the composition control of the melt.
The charge is horizontal, and the melting speed is almost the same everywhere. This can prevent local metal overheating due to heavy objects.
The charge should be fed into the furnace at one time, two or more additions will increase the content of non-metallic inclusions and gas.
China Ceramic Foam Filter can remove the non-metallic inclusions in the aluminum alloy melt. It is treated with flux in the furnace. Ceramic foam filter technology outside the furnace has become an important method for the purification of molten aluminum.
China Ceramic Foam Filter is specially designed to produce high-quality cast products in aluminum casting workshops. It can reduce waste caused by impurities, reduce costs due to impurity defects, achieve faster extrusion or hot rolling speeds, increase productivity and ease Replace the alloy.