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Waste steel processing method

A processing method and steel technology, applied in the direction of vacuum/special atmosphere packaging, etc., can solve the problems of high cost, low yield, waste of resources, etc., and achieve the goal of improving steelmaking efficiency, reducing environmental pollution, and reducing steelmaking energy consumption Effect

Inactive Publication Date: 2018-10-19
成都兴天诚绿色建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Both methods will produce dust with high zinc content. If it is discharged directly, it will affect the environment and cause waste of resources. If the dust is recycled, the process is complicated, the cost is high, and the yield is extremely low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Scrap steel processing is carried out by:

[0012] Immerse the scrap steel in the alkaline solution, connect it to the positive electrode of the power supply, and carry out the electrochemical reaction. After the surface coating of the scrap steel falls off, take it out, rinse it with a surfactant solution and dry it, and then wash it with deionized water. Rinse, then cover the surface of the scrap steel with LDPE film, vacuumize after covering, until the LDPE film closely adheres to the surface of the steel.

[0013] Preferably, the surfactant solution includes the following components: sodium dodecylbenzenesulfonate and fatty alcohol polyoxyethylene ether.

[0014] In addition, preferably: the alkaline solution is an aqueous sodium hydroxide solution.

[0015] Further preferably: the concentration of the sodium hydroxide solution is 20-30wt%.

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PUM

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Abstract

The invention discloses a waste steel processing method. The waste steel processing method comprises the following processes that waste steel is soaked in alkali solution and connected with the positive pole of a power supply, an electrochemical reaction is conducted, and the waste steel is picked up until the surface coating of the waste steel is removed; the waste steel is rinsed with surfactantsolution, then rinsed with deionized water and dried; and the surface of the waste steel is coated with an LDPE film, and vacuummizing is conducted after coating until the LDPE film is tightly attached to the surface of the steel. The waste steel processing method can increase the recovery rate of resources and reduce the environmental pollution.

Description

technical field [0001] The invention relates to the technical field of steel scrap processing. Background technique [0002] Scrap iron and steel is an important recyclable resource, which mainly comes from scrap in the production of iron and steel enterprises, scrap steel recycled in industry and life, etc. [0003] In the prior art, scrap iron and steel is mainly used for re-smelting through electric furnace steelmaking, and in some prior art, it is also reused as cold material in converter steelmaking. Both of these methods will produce dust with high zinc content. If it is discharged directly, it will affect the environment and cause waste of resources. If the dust is recycled, the process is complicated, the cost is high, and the yield is extremely low. Contents of the invention [0004] The object of the present invention is to propose a method for treating scrap steel, which can improve the resource recovery rate and reduce environmental pollution by first treating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F5/00B65B31/02
CPCB65B31/02C25F5/00
Inventor 胥清贵孔志强
Owner 成都兴天诚绿色建筑科技有限公司
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