Recycling device and recycling method for a mold material for alumina brick production

Abstract

The invention discloses a recycling device and recycling method for a mold material for alumina brick production. The recycling device comprises a frame, wherein a hearth is arranged on the frame, a sleeve is arranged in the hearth, and a blanking hole is provided at the bottom of the sleeve; one end of the sleeve is provided with a feeding port, and the other end thereof is provided with a discharging port; a feeding rotating shaft is arranged inside the sleeve; a feeding screw is arranged on the feeding rotating shaft; the feeding rotating shaft is in drive connection with a feeding motor; aheating plate is arranged inside the hearth; a tapping device is arranged at the lower part of the sleeve; a conveying device is arranged at the lower part of the sleeve; the conveying device comprises a conveying roller, a conveying belt and a conveying motor; an outgoing hole is formed on the hearth below one end of the conveying device; and a material blocking plate is arranged at the discharging port. The object of the invention is providing a recycling device and recycling method for a mold material for alumina brick production. The device can perform heating pretreatment of used sand toimprove the film removing effect, and then effectively remove the residue on the surface of the sand by mechanical friction.

Description

technical field [0001] The invention belongs to the field of refractory material production, and specifically relates to a recovery device and a recovery method for producing mold materials for alumina bricks. Background technique [0002] Fused cast alumina (Al 2 o 3 ) Brick is a high hardness compound with a melting point of 2054°C and a boiling point of 2980°C. It is an ionic crystal that can be ionized at high temperatures, and is often used as a refractory material for glass kilns. With the rapid development of my country's electrolytic aluminum, ceramics, medicine, electronics, photovoltaics, machinery and other industries, there is still a large room for growth in the market demand for alumina bricks, and the output of alumina bricks will continue to grow. [0003] Magnesia is one of the most important raw materials for refractory materials. It is used to manufacture various magnesia bricks, magnesia-alumina bricks, ramming materials, repair materials, etc., and can...

AI Technical Summary

Problems solved by technology

Magnesia needs to be pure and pollution-free, because the recovery cost is high and the process is complicated, and the broken magnesia bricks are usually discarded and not reused. However, the price of magnesia is relatively expensive. If it is not recycled and reused, it will cause waste of resources and increase costs. Hence the need for recycling

In the process of making bricks, magnesia usually needs to add a binder (water glass). When reusing magnesia, if the sodium silicate glue on the surface of the sand grains is not removed, the bonding performance of magnesia bricks will be seriously affected, and even cannot Meet the use standard

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