Slag phase filter for smelting copper and copper alloy as well as preparation method and application of slag phase filter

The invention discloses a slag phase filter for copper and copper alloy smelting, and belongs to the technical field of alloy machining. The preparation method comprises the following steps: combining multiple layers of materials with different porosities into a template material, soaking the template material in refractory slurry, drying, and sintering and curing at high temperature to form the slag phase filter for copper and copper alloy smelting. The slag phase filter for copper and copper alloy smelting is applied to the copper or copper alloy smelting process, suspended slag phases in copper liquid can be effectively removed, after the filtered copper liquid is cast, a high-power metallographic structure is checked, no fine slag phase is found, the positive effect on the smelting and casting quality is achieved, and the service life of the slag phase filter is prolonged. The filter is very important for reducing the production cost, improving the production efficiency and improving the product quality,