Method for regenerating water-glass old sand

A technology for regenerating old sand and water glass, applied in casting molding equipment, metal processing equipment, manufacturing tools, etc., can solve the problem of deteriorating high temperature performance of water glass type (core) sand, deterioration of high temperature performance of water glass type (collapse and fire resistance) problems such as speed, to achieve great application value, the effect of simple equipment
CN1792497AInactive Publication Date: 2006-06-28HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2006-06-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for regenerating the used water glass sand used for metallic casting includes such steps as breaking, adding water, freezing at -1¿D-60 deg.C, dry regeneration while dusting and de-moistening.
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Description

technical field

[0001] The invention belongs to a recycling method for metal casting materials, and in particular relates to a recycling method for used water glass sand. technical background

[0002] The water glass sand casting process has many advantages such as high strength, low cost, simple process, and environmental friendliness. Since it was introduced into the foundry industry in the 1960s, it has been widely used in countries all over the world. However, it is difficult to regenerate the old water glass sand. , has plagued foundry workers for decades, and is considered to be one of the worldwide problems in the foundry industry. In many casting factories or workshops in our country, the discarded old water glass sand is still piled up like a mountain, which has brought serious pollution to the environment and is also a great waste of resources. A large amount of waste water glass old sand not only increases the transportation cost, wastes limited resources, but al...

Claims

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