Screening and magnetic separation treatment method for casting raw material sand

Abstract

The invention relates to the field of casting processing, and particularly relates to a screening and magnetic separation treatment method for casting raw material sand. A screening and magnetic separation device is used and comprises a first-stage screening groove and a second-stage screening groove, wherein the interior of the first-stage screening groove is of an arc-shaped structure; a plurality of first through holes are formed in the bottom of the first-stage screening groove; the second-stage screening groove is fixedly connected to the bottom of the first-stage screening groove and communicates with the first-stage screening groove through the first through holes; the interior of the second-stage screening groove is of a circular hollow structure; a sand falling plate is inserted in the position, positioned below the first through holes, of the inner side of the second-stage screening groove and is of an outer arc-shaped structure; supports are fixedly connected to the two endsof the sand falling plate; swing arms are symmetrically hinged to the supports; limiting grooves are symmetrically formed in the two ends of the sand falling plate; the swing arms are symmetrically arranged in pairs; and a magnetic brush of an arc-shaped structure is fixedly connected between every two swing arms. The screening and magnetic separation treatment method can conduct efficient magnetic separation screening on the casting sand and is suitable for popularization.

Description

technical field [0001] The invention relates to the field of casting processing, in particular to a screening and magnetic separation treatment method for casting raw sand. Background technique [0002] In the field of modern foundry processing, sand casting is often used. The material of sand casting is simple and cheap, and the casting effect is good, and the process is simple and easy to operate. It has always been the mainstream process in the field of foundry processing. [0003] The basic raw materials of sand casting are foundry sand and sand mold binder. Only the foundry sand needs to be sieved before use, and the large particles and metal particles in the foundry sand are sieved out. The traditional way of sieving is to use magnetic screening. However, the conventional magnetic screening cannot completely remove the metal particles in the foundry sand, which greatly affects the sand casting. [0004] For this reason, we propose a magnetic separation treatment metho...

AI Technical Summary

Problems solved by technology

[0003] The basic raw materials of sand casting are foundry sand and sand mold binder. Only the foundry sand needs to be sieved before use, and the large particles and metal particles in the foundry sand are sieved out. The traditional way of sieving is to use magnetic screening. However, the conventional magnetic screening cannot completely remove the metal particles in the foundry sand, which greatly affects the sand casting

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