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Design illuminate
Copper, nickel, silver and other metal hydroxides in electroplating sludge is not stable, if piled up at random at leaching by the rain .its can leak into the soil and pollute the environment, and harm human health through the food chain. But the heavy metals in electroplating sludge are non renewable resources, not to recovery means huge waste.
In this design, projects required to treat 180 tons/day electroplating sludge. Moisture content of the original sludge£¬which has been pressed by the frame filter£¬is approximately 75%. Aiming at the characteristic of electroplating sludge, and in the light of the successful experience of external treatment of electroplating and mature technology of internal treatment of that, we select drying and smelt technology. Although this process equipment investment cost much, but it have the high recovery rate of the heavy metal, the short process , and the slag can be Recyclable.
Basic process is: Stored mud room ¡ú Rotary dryer ¡úbrick machine ¡úsmelt¡ú Ash and other recycled.
The main equipment used in the design is Rotary Dryer, smelter, block making machine, Pulse bag filter, desulfurization tower, activated carbon adsorption tower and so on. The total investment is 4176400 yuan.
Keywords£ºelectroplating sludge, mummification, smelt, heavy metal, recycle
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