Resource recovery process of galvanizing sludge

Abstract

The invention relates to treatment technique for electroplated sludge, which comprises following steps: a. matching material by dried sludge, solvent and coke according to the weight proportion as 100:15~71:50~88; b. mixing the material evenly to put into melting furnace with temperature 1400~1600Deg for reducing melting, releasing the reduced nickel-copper alloy through ally output and liquid residue through slag hole; c. treating residue gas and discharging out. This method has well speed and high recovery ratio, and overcomes problems brought by slag.

Description

technical field

[0001] The invention relates to a process for treating toxic industrial solid waste, in particular to a process for treating electroplating sludge. Background technique

[0002] Electroplating industrial sludge is the sediment produced during the treatment of electroplating sewage, and its main components are chromium, iron, copper, nickel, aluminum, zinc, magnesium, calcium, silicon, sulfur, cyanide, etc. Because it contains a large amount of toxic and harmful heavy metals, it is a controlled toxic industrial solid waste, and due to the development of modern industry, the discharge of electroplating sludge is increasing. If large-scale electroplating sludge is not properly treated, it will eliminate toxic and harmful waste. Substances will cause serious damage to the environment and endanger human health.

[0003] Recycling of electroplating sludge, harmless treatment, and elimination of its secondary pollution to the environment have long been the focus of...

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