Resource recovery process of galvanizing sludge

A technology of electroplating sludge and treatment process, applied in the direction of oxidation treatment of sludge, etc., can solve the problems of waste of resources, loss, and inability to run production for a long time.
CN100506727CInactive Publication Date: 2009-07-01台州盛世环境工程有限公司
2 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
台州盛世环境工程有限公司
Publication Date
2009-07-01
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a process for treating electroplating sludge. The invention not only can eliminate the poisonous and harmful substances in the electroplating sludge, but also solves the technical problem of high treatment cost. The resource treatment process of the electroplating sludge comprises the following steps: a, ingredients: after the electroplating sludge is dried by a dryer, it is mixed with flux and coke according to the weight ratio of 100:15~71:50~88 ; b. Smelting: Stir and mix the above-mentioned materials with a good proportion, put them into a melting furnace for smelting reduction smelting at a temperature of 1400°C to 1600°C, and release the nickel-copper alloy obtained by smelting reduction through the alloy port , The liquid slag is released from the slag outlet; c. Tail gas treatment: the tail gas obtained during the above smelting is treated by the purification system and then emptied. The present invention has fast main reaction speed, high nickel recovery rate, forward charging, low batching cost, and overcomes the viscous slag and easy formation of nodules during reduction smelting of electroplating sludge, difficulty in descending furnace charge, extremely short furnace life, and frequent death Furnace problem.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a treatment process of toxic industrial solid waste, in particular to a treatment process of 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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More