Used sand reclamation method and used sand reclamation thereof

A technology for regenerating old sand and regenerating sand, applied in the field of old sand recycling equipment, can solve the problems of secondary pollution of the environment, difficult to reuse, etc., and achieve the effect of strong inert membrane capability, high quality and water saving.

Inactive Publication Date: 2008-07-02
河南省巨辉机械设备有限公司
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  • Abstract
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Problems solved by technology

In addition, a large amount of water-containing glass dust generated during the dry regeneration process is

Method used

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  • Used sand reclamation method and used sand reclamation thereof
  • Used sand reclamation method and used sand reclamation thereof

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Experimental program
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Embodiment Construction

[0024] FIG. 1 shows that the old sand regeneration system includes a heat flow regeneration machine 1 , an intermediate sand bucket 9 , a dryer 10 , and a centrifugal regeneration machine 18 . The heat flow recycler 1 is a vertical device, including a sand inlet hopper 2, a stirring device 3, a bucket body 4, a heat inlet pipe 5, a sand discharge port sealing bottom plate 6, a metal mesh 8, and a drain pipe 7. The staving 4 is installed on the frame (not shown in the figure), and the sand-advancing bucket 2 is located on the top of the staving 4, and the stirring device 3 is installed on the top of the staving 4 by a bearing seat, and its impeller is in the staving inside. The heat inlet pipe 5 is located at the bottom of the staving 4 and communicates with the staving. The heat inlet pipe 5 is also communicated with the boiler (not shown in the figure) simultaneously. The bottom of staving body 4 is provided with sand discharge port sealing base plate 6, and base plate can o...

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Abstract

The invention discloses a used sand regeneration method and a used sand regeneration system thereof. The sodium silicate used sand is positioned in a heat flow used sand regeneration machine 1 for being heated and cleaned, an inert membrane at the surface of the used sand is dissolved, the sewage passes through a used sand layer, the fine powder in the sewage is retained in the regeneration sand,and the sodium silicate flows into a storage water tank with water. The regeneration sand is then sent to a dry regeneration machine 18 for dedusting after being sent to a dryer 10 for drying, and then the clean regeneration sand is obtained. Liquid in the storage water tank can be repeatedly reused for cleaning the used sand. When the sodium silicate content is too high to be reused, concentration and recycling can be done to solution. The invention can not only produce the high quality regeneration sand, but also can realize zero discharge of the sewage.

Description

technical field [0001] The invention relates to an old sand regeneration method and used sand regeneration equipment used in casting production. Background technique [0002] Sodium silicate sand molding is widely used in foundry production. Sodium silicate sand has many advantages such as non-toxic, tasteless, low cost, and easy to use. It is recognized as the casting method that least affects human health. At present, due to the difficulty in regenerating the old water glass sand, it is generally discarded after being used once in production. The discarding of a large amount of old sand not only seriously pollutes the environment but also wastes resources. There has been no good solution and ideal recycling equipment for decades. [0003] Taking advantage of the water-soluble characteristics of water glass, the effect of using the wet method to regenerate this kind of old sand is more significant, but there are two habitual prejudices in the traditional wet method and th...

Claims

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Application Information

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IPC IPC(8): B22C5/08B22C5/16
Inventor 李江平
Owner 河南省巨辉机械设备有限公司
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