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Foundry coating prepared from foundry resin sand regeneration power dust and method thereof

A technology for casting resin and regenerating dust, which is applied in casting molding equipment, coatings, casting molds, etc., can solve problems such as undiscovered casting coatings, achieve comprehensive utilization or recycling, reduce grinding time, and reduce production costs.

Inactive Publication Date: 2008-09-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no public report and public use of foundry resin sand reclaimed dust to prepare foundry coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Formula of alcohol-based coating aggregate for casting resin sand iron castings prepared by using foundry resin sand reclaimed dust:

[0024] Foundry resin sand recycled dust (140-400 mesh) 80%, corundum powder (320 mesh) 20%.

[0025] Preparation steps:

[0026] a. Sieve the regenerated dust of foundry resin sand to select a particle size of 260-400 mesh;

[0027] b. According to the above formula, fully mix evenly; prepare the aggregate of the coating;

[0028] c. Weigh an appropriate amount of suspending agent, binder, dispersant and additive;

[0029] d. Add aggregate and stir to form the desired coating.

Embodiment 2

[0031] Formula of alcohol-based coating aggregate for casting resin sand iron castings prepared by using foundry resin sand reclaimed dust:

[0032] Foundry resin sand recycled dust (140-400 mesh) 75%, corundum powder (320 mesh) 25%.

[0033] Preparation steps:

[0034] a. Sieve the regenerated dust of foundry resin sand to select a particle size of 300-350 mesh;

[0035] b. According to the above formula, fully mix evenly; prepare the aggregate of the coating;

[0036] c. Weigh an appropriate amount of suspending agent, binder, dispersant and additive;

[0037] d. Add aggregate and stir to form the desired coating.

Embodiment 3

[0039] Formula of alcohol-based coating aggregate for casting resin sand cast steel (small pieces) by using recycled dust from foundry resin sand:

[0040] Foundry resin sand recycled dust (140-400 mesh) 40%, corundum powder (320 mesh) bauxite (280-320 mesh) 60%.

[0041] Preparation steps:

[0042] a. Sieve the regenerated dust of foundry resin sand and ball mill it into a particle size of 260-400 mesh;

[0043] b. According to the above formula, fully mix evenly; prepare the aggregate of the coating;

[0044] c. Weigh an appropriate amount of suspending agent, binder, dispersant and additive;

[0045] d. Add aggregate and stir to form the desired coating.

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PUM

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Abstract

The invention provides a formulation and a method for preparing the aggregate of a casting dope by utilizing the regenerated dust of casting resin bonded sand. The aggregate formulation includes: casting the regenerated dust of casting resin bonded sand and schmigel; casting the regenerated dust of casting resin bonded sand and bauxite; and casting the regenerated dust. The invention can be used for casting dopes like the casting resin bonded sand, clay sand, sodium silicate sand and lost foam, etc. The method includes: screening the regenerated dust of casting resin bonded sand, directly or grinding and mixing uniformly; preparing the aggregate of the dope. The prepared dope has the excellent performance. As the aggregate has the advantages of low manufacture cost, excellent performance and reducing the discharge of dust, the comprehensive utilization or circulating utilization of casting dust is realized; therefore, the formulation and the method have the excellent market competitive strength and the value of application.

Description

technical field [0001] The invention relates to the comprehensive utilization of foundry solid waste, in particular to the composition and method of preparing foundry paint by using the dust produced in resin sand foundry engineering. Background technique [0002] Foundry resin sand regeneration has a relatively mature foundry used sand recycling production line. The poured resin sand mold is continuously recycled through the processes of sand falling, crushing, sieving, magnetic separation, cooling, regeneration, sand mixing, molding (core making), etc. Ventilation and dust removal points are set up in each process of resin sand regeneration treatment to collect dust, and the collected dust is stored in the dust collector and discarded after reaching a certain amount, causing environmental pollution. These dust particles are very fine, generally larger than 140 mesh, and most of them are silica. At present, the casting dust of resin sand in production is basically discard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 张方张希俊常殿存李莉丁恒敏
Owner KUNMING UNIV OF SCI & TECH
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