Water glass inorganic used sand regeneration method

A technology of used sand regeneration and water glass, which is applied in the cleaning/processing machinery of casting materials, casting molding equipment, casting molds, etc., can solve the problems of shortening the life of regeneration equipment, poor quality of recycled sand and low regeneration efficiency, Achieve the effect of acid-base stability, high regeneration rate and low energy consumption
CN110434280AActive Publication Date: 2019-11-12南阳仁创砂业科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
南阳仁创砂业科技有限公司
Publication Date
2019-11-12

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Abstract

The invention provides a water glass inorganic used sand regeneration method. The water glass inorganic used sand regeneration method includes the steps that an adding agent is added into water glassinorganic used sand and stirred and mixed, and then centrifugal treatment is performed so that regenerative sand can be obtained. A chemical reagent added in the method is stable in acidity and alkalinity, serious corroding on equipment is not caused, and material taking is convenient; a centrifugal manner is selected in a mechanical method, and the mechanical efficiency can be adjusted due to speed changing; and meanwhile, a centrifugal method can also be used for separating sand grains from a removed inorganic film due to speed changing. The regeneration process related in the method is simple, equipment input is low, energy consumption is little, and no secondary pollution is generated; and the regeneration rate is high, and reaction resultants cannot affect the using process of the regenerative sand.
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Description

technical field

[0001] The invention relates to the technical field of resource recovery, in particular to a method for regenerating inorganic old sand of water glass. Background technique

[0002] The main components of water glass inorganic binder sand are modified sodium silicate and additives containing metal oxides. It is mainly used as foundry sand, which has cohesiveness after being mixed with silica sand, and can be solidified and formed after heating. Sodium silicate inorganic binder sand is one of the three most widely used sand molds in casting, and it is developing rapidly because of its advantages of high precision, low energy consumption, and no pollution. However, it has the disadvantage of poor regeneration and reuse of old sand, which has become the biggest obstacle to development. According to decades of research results in the industry, there are mainly four methods of regeneration of sodium silicate inorganic sand: dry method, wet method, thermal method...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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