Water glass old sand refurbishing equipment and process thereof for refurbishing old sand

Abstract

The invention relates to equipment for refurbishing water glass old sand, in particular to comprehensive equipment for refurbishing water glass old sand by adopting crushing equipment, screening equipment, stripping equipment and classifying equipment. The equipment comprises a feeding device and further comprises a fine crusher, a screening machine, a stripping machine, a classifying machine and a belt type dust collector, wherein the feeding device is abutted with the fine crusher; the fine crusher is communicated with the screening machine through a bucket type elevator; the screening machine is communicated with a chute and is simultaneously communicated with the stripping machine; the stripping machine is communicated with the classifying machine; a gravity type lock wind discharge valve I is arranged at the bottom of the classifying machine; and the classifying machine is also communicated with the belt type dust collector. Compared with a traditional production process for washing and refurbishing by adopting a wet method, the production process is small in floor space, is less affected by weather and simultaneously causes no pollution to water resources. Compared with another advanced production process for refurbishing the water glass old sand by adopting a dry method, the process has the advantages of simple process flow, low investment and small floor space.

Description

technical field [0001] The invention relates to equipment for refurbishing old water glass sand, in particular to a comprehensive equipment for refurbishing old water glass sand by using crushing equipment, screening equipment, stripping equipment and grading equipment. Background technique [0002] Sodium silicate sand is a molding and core-making process in the casting production process of foundries. Water glass sand is prepared by adding 4.5% to 8.0% water glass with the chemical formula of Na2O mSiO2 to pure artificial or natural quartz sand. [0003] Our country discharges more than millions of tons of used foundry sand every year. Because the discarded old sand is alkaline, there is no grass in the place where it is piled up, which has caused environmental pollution to a large extent. And with the improvement of a series of mining legal systems, the phenomenon of random opening of quartz sand has also been effectively curbed. The price of quartz sand for foundry is ...

AI Technical Summary

Problems solved by technology

Although the effect of this production process is good, the initial investment is relatively large, the production line occupies a large area, and the energy consumption is also high. It is mainly suitable for large-scale foundry enterprises.

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