Comprehensive regeneration and reuse process based on casting waste molding sand

A waste molding sand and process technology, applied in the direction of casting molding equipment, manufacturing tools, cleaning/processing machinery of casting materials, etc., can solve the problems of waste molding sand recycling and utilization

Inactive Publication Date: 2020-11-20
重庆长江造型材料常州有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a comprehensive recycling process base...

Method used

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  • Comprehensive regeneration and reuse process based on casting waste molding sand
  • Comprehensive regeneration and reuse process based on casting waste molding sand

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This embodiment provides a comprehensive recycling process based on foundry waste sand, which specifically includes the following steps:

[0028] S1. Collect the waste casting sand, and absorb and collect the dust in the waste casting sand through the air blowing equipment during the collection process;

[0029] S2. Cut and pulverize the waste foundry sand processed in step S1, convey the cut and crushed waste foundry sand through the cyclone separator after the crush treatment, and collect the metal in the waste foundry sand through the magnetic core in the cyclone separator 1 Residue, so as to realize the separation effect on separating the metal residue and the old molding sand mixture; then the metal residue obtained by separation is sent to step S6, and the old molding sand obtained by separation is sent to step S3;

[0030] S3, spraying the old molding sand processed in step S2, and collecting the dust in the conveying process after spraying;

[0031] S4, then bu...

Embodiment 2

[0044] Such as figure 2 As shown, the process of this embodiment is the same as that of Embodiment 1, the difference is that in order to improve the rapid collection of metals, a rotating motor that drives the magnetic core rod 3 to rotate is provided between the magnetic core rod 3 and the first cylinder 4 8.

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Abstract

The invention discloses a comprehensive regeneration and reuse process based on casting waste molding sand. The comprehensive regeneration and reuse process comprises the following steps that the casting waste molding sand is collected, then the casting waste molding sand is subjected to cutting and pulverizing, the cut and pulverized casting waste molding sand is conveyed through a cyclone separator after pulverizing, metal residues in the casting waste molding sand are collected through a magnetic core in the cyclone separator, and the metal residues are fed into an original casting metal smelting furnace to be processed and mixed with original metal; the old molding sand obtained through separation is subjected to spraying treatment and used for collecting dust in the conveying processafter being sprayed, then the old molding sand is subjected to combustion treatment, combustible dust in the old molding sand is combusted, finally the combusted old molding sand is subjected to secondary screening treatment and cooling to finally obtain a molding sand recycled product, and the molding sand recycled product and the new molding sand are mixed and then reused. According to the comprehensive regeneration and reuse process, the casting waste molding sand can be rapidly and conveniently reused and recycled, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of waste sand recycling and reuse, in particular to a comprehensive recycling process based on foundry waste sand. Background technique [0002] Molding sand can be divided into facet sand, filling sand and single sand, etc. The surface sand is a layer of molding sand that is close to the casting, and the quality requirements are high. The filling sand is behind the surface sand layer and does not contact with the molten metal, so the quality requirements are not strict. Single sand is a molding sand that does not divide face sand and back sand, and is mainly used for machine molding. In addition, the sand molds of large-scale castings often need to be dried before pouring. The molding sand used in it contains more clay. This type of sand is called dry molding sand; small and medium-sized castings are often used for wet casting, and the amount of clay in the molding sand used in it is less. , This type of...

Claims

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Application Information

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IPC IPC(8): B22C5/10B22C5/06B22C5/08B22C5/04
CPCB22C5/04B22C5/06B22C5/08B22C5/10
Inventor 吴长松
Owner 重庆长江造型材料常州有限公司
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