Complete equipment for complete regeneration of used clay sand

Abstract

The invention discloses complete equipment for complete regeneration of used clay sand. The complete equipment comprises a high-temperature embrittling device for roasting the used sand at a high temperature, an embrittled used sand cooling device for cooling the high-temperature embrittled used sand, a plurality of rows of grinding wheel regeneration machines for mechanical regeneration of the cooled used sand, a micro powder separating unit for separating micro powder in the regenerated sand, a regenerated sand modifying device for reducing acid consumption of the regenerated sand, and a three-return-stroke rotary drum for drying the modified regenerated sand. The complete equipment has the beneficial effects that the used clay sand can be completely regenerated, and the regenerated sand can be used for core making of various organic binding agents, so that environment pollution caused by discharge of the used sand is alleviated, the environment and natural resources are protected.

Description

technical field [0001] The invention relates to the technical field of liquid metal forming, in particular to a complete set of equipment for completely regenerating old clay sand. Background technique [0002] Machinery manufacturing industry is the pillar industry of our country, and casting is the basic industry of machinery manufacturing industry. The molds used in foundry production are mainly sand molds, ceramic molds, metal molds, plaster molds, etc. Among them, the castings produced by sand casting account for more than 90% of the total output of castings. Sand casting can be divided into clay sand casting, resin sand casting and water glass sand casting according to the different binders used. The clay sand production process has become the most commonly used casting production process in the foundry field because of its cheap and easy-to-obtain raw materials, easy handling, strong reusability, strong ability to adapt to molding methods, and convenient storage and ...

AI Technical Summary

Problems solved by technology

Purely mechanical or air regeneration can only obtain incomplete regenerated sand

At present, there are very few equipments for the complete regeneration of old clay sand, and there is no complete set of equipment suitable for the complete regeneration of old clay sand, and the completely regenerated clay sand obtained by the regeneration device of the prior art has high acid consumption and complete clay regeneration. Problems such as poor adaptability of the foundry process of regenerated sand

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