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Method for regenerating metal from waste activated carbon

A technology for regenerating metals and activated carbon, applied in separation methods, filter regeneration, chemical instruments and methods, etc., can solve the problem of high cost and achieve the effect of improving the recovery rate

Inactive Publication Date: 2019-12-24
航天国环技术集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, heavy metal removal is required before the sewage is discharged. The traditional heavy metal removal process is suitable for the removal of heavy metal ions with high concentration, while the removal technology for low concentration, such as reverse osmosis, is too costly.

Method used

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  • Method for regenerating metal from waste activated carbon

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Embodiment

[0025] This embodiment provides a method for regenerating metals from waste activated carbon, such as figure 1 shown, including the following steps:

[0026] S1. Grinding the waste activated carbon into powder, and mixing them evenly according to the ratio of waste activated carbon powder: glucose: baking soda: silicon dioxide: sodium carbonate: 60:5: (0.1-0.3): 5:2 to obtain waste activated carbon mixture;

[0027] S2. Fully burn the waste activated carbon mixture through spontaneous combustion under oxygen-enriched conditions, and sinter it into a block with a porous structure; collect the smoke and dust generated during the combustion process, recover the metals in the dust, and perform harmless treatment on the waste gas discharge;

[0028] S3. Grinding the massive body with a porous structure in a mill to obtain solid particles with a particle size of less than 320 mesh;

[0029] S4. Add anhydrous sodium sulfate and hydrogen peroxide to the solid particles for mixing a...

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Abstract

The invention discloses a method for regenerating metal from waste activated carbon, and relates to the technical field of metal recovery. The method comprises the steps of sintering, powder grinding,secondary nickel leaching, secondary iron leaching, primary cadmium leaching and the like, all useful metals can be extracted from the waste activated carbon through multiple times of filter pressingtreatment, and the recovery rate is improved.

Description

technical field [0001] The invention relates to the technical field of metal recovery, in particular to a method for regenerating metal from waste activated carbon. Background technique [0002] In recent years, heavy metal pollution incidents have occurred frequently in our country, which has caused a serious threat to the safety of drinking water and food in our country, and endangered human health. Some metals, such as cadmium, nickel, ferric ions, aluminum, cobalt, chromium, etc., can cause harm to the human body in very small amounts. [0003] Therefore, heavy metal removal is required before the sewage is discharged. The traditional heavy metal removal process is suitable for the removal of heavy metal ions with high concentration, while the removal technology suitable for low concentration, such as reverse osmosis, is too costly. At present, activated carbon adsorption technology is more commonly used. Activated carbon adsorption has a good removal effect on organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/20C22B7/00C02F1/28C02F101/20
CPCB01J20/3483B01J20/20C22B7/007C02F1/283C02F2101/20Y02P10/20
Inventor 郑先强
Owner 航天国环技术集团有限公司
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