Method for recycling waste metal paint buckets

A technology for recycling and paint buckets, which is applied in the treatment of hydrocarbon oil, petroleum industry, oxides of sub-metallic iron, etc. It can solve the difficult physical peeling of the surface coating and paint of scrap metal paint buckets, difficult manual or mechanical peeling, etc. problem, to achieve the effect of low cost, simple device, and high-efficiency separation

Inactive Publication Date: 2019-02-15
CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: for the paint or coating adhered to the wall of the paint bucket, it is difficult to peel off manually or mechanically, so it is difficult to realize the physical stripping of the paint and paint on the surface of the scrap metal paint bucket. Recycling method of waste metal paint buckets that are physically stripped and then sorted and recycled

Method used

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  • Method for recycling waste metal paint buckets

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Embodiment 1

[0025] 1) Use a cutting machine to cut 2Kg scrap iron paint buckets into slices with a size of 50cm×50cm, send the slices into a closed container, and keep the temperature at 40°C for 40min;

[0026] 2) Add the slices obtained in step 1) and 1Kg of steel balls with a diameter of 120mm and 0.1Kg of diesel into a vertical stirring ball mill, and process them at a speed of 200r / min for 10min. The paint coating and a small amount of iron on the surface of the slices are stripped and mixed into the diesel middle;

[0027] 3) The material in the vertical ball mill is taken out and screened to obtain processed slices, steel balls and diesel oil mixed with lacquer coating substances, and the slices are used as raw materials for recycled metals; steel balls are used as the medium for ball mill reuse; The diesel oil mixed with iron powder and lacquer coating substance is subjected to suction filtration treatment, and the obtained diesel oil is reused as a buffer for ball milling materia...

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Abstract

The invention provides a method for recycling waste metal paint buckets. The method comprises the following steps: firstly cutting the waste metal paint buckets into slices of 50 cm x 50 cm, and charging the slices into a closed container for drying; performing ball milling on the slices, steel balls and medium oil, and sieving; filtering the medium oil mixed with an iron powder and a lacquering material to obtain an oil-containing mixture of the iron powder and the lacquering material; performing vacuum pyrolysis on the mixture of the iron powder and the lacquering material for 30 min at 300to 400 DEG C to obtain pyrolysis oil as a regenerative fuel and pyrolysis residue; then heating the pyrolysis residue in contact with air to 500 DEG C for 30 min, cooling, and delivering the pyrolysisresidue to a magnetic separator to obtain a ferroferric oxide powder as a magnetic raw material. The method fully utilizes the process advantages and the availability of raw materials, avoids the problems of high energy consumption, secondary pollution and the like in the prior art, and facilitates industrialized large-scale recovery.

Description

Technical field: [0001] The invention belongs to the field of recycling and utilization of secondary resources, and in particular relates to a method for recycling and processing waste metal paint buckets. technical background: [0002] According to the "National Hazardous Waste List", discarded packaging, containers, filter adsorption media, etc. containing or contaminated with toxic and infectious hazardous wastes belong to the hazardous waste HW49 category, and the waste code is 900-041-49. That is to say, waste paint barrels, dye barrels, ink barrels, waste engine oil barrels, resin waste iron barrels, etc. produced in the industrial production process all belong to this type of hazardous waste. [0003] The paint bucket is also the paint bucket, which is used to hold the paint. In the decoration, after the painter uses up the paint, these buckets are left. Due to the huge amount of paint buckets, if they are not handled properly, harmful substances will endanger health...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04C10B57/00C10G1/00C10G1/10C01G49/08
CPCC10B57/045C01G49/08C10B57/00C10G1/00C10G1/10C10G2300/1003
Inventor 袁玉香易师
Owner CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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