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Method for treating copper-nickel containing solid waste

A solid waste and pretreatment technology, which is applied in the field of processing non-ore raw materials to produce non-ferrous metals or their compounds, can solve the problems of complex sources of copper-containing and nickel-containing filter mud, large differences in composition, and low metal grades, so as to adapt to raw materials The effect of wide range, high recovery rate and reasonable slag type

Inactive Publication Date: 2010-12-29
杭州富阳申能固废环保再生有限公司
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Problems solved by technology

But in fact, because the source of the collected copper-containing and nickel-containing filter mud is very complicated, the composition is very different, and the metal grade is low. The existing treatment methods are basically limited to the small cupola smelting furnace. The disadvantages of the small cupola smelting furnace are: Furnace hearth area is small (0.5m 2 Left and right), without any dust collection device, the furnace gas is directly discharged from the furnace top, the output is low, the energy consumption is high, the recovery rate is low, the environmental pollution is large, and the smelting furnace charge is basically a high-grade charge, which is relatively simple

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  • Method for treating copper-nickel containing solid waste

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Embodiment 1

[0033] Production process see figure 1 . This embodiment provides a perennial process operation mode in large-scale production. The process parameters involved in all embodiments can be adjusted reasonably within the range shown by those skilled in the art, so as to realize the recovery of solid waste containing copper and nickel. Deal effectively.

[0034] Put the filter mud into the fluidized heating furnace and rotary kiln dryer, and dry it continuously for 24 hours at a temperature of 800-900°C. During the drying process, it is detected that the water content of the filter mud drops below 25%, and the dried filter mud can be dried The brick-shaped furnace charge is sent to the brick making machine by a belt conveyor to be pressed into a brick-shaped furnace charge, which is a standard brick size of 240mm×115mm×53mm, and is used as the furnace charge for the reduction smelting furnace. The heat source required for the drying of the rotary kiln comes from the combustion of...

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Abstract

The invention relates to a method for treating copper-nickel containing filter mud generated through the waste water treatment of printed-circuit board production enterprises, belonging to the field of non-ferrous metal production realized by treating non-ore raw materials. The method comprises the following steps of: pretreating the filter mud into charging materials, and then adding quartz / limestone and carbon; carrying out reduction smelting treatment at 1150-1250 DEG C; and then respectively treating obtained liquid materials, waste gases and waste residues. The invention greatly improves the problem of environmental pollution caused by cupolette production and has wide raw material adaptation range; the granularity of the filter mud ranges from 0.1mm to 100mm, and the water content thereof is 75-80 percent; and in addition, a detection result shows that the invention has good separation effect of non-ferrous metals and impurities and high recovery rate of the non-ferrous metals.

Description

technical field [0001] The invention belongs to the field of processing non-ore raw materials to produce non-ferrous metals or their compounds, and in particular relates to a method for processing filter mud produced in wastewater treatment of printed circuit board production enterprises. Background technique [0002] With the rapid development of China's national economy, the development of non-ferrous metal industry has provided support and greatly promoted the development of China's electric power, transportation, construction, electronic information, national defense industry and other related industries as well as high-tech industries. Non-ferrous metal consumer countries occupy an important position in the international non-ferrous metal market. However, the supply of non-ferrous metal raw materials in China is seriously insufficient, which has become a bottleneck for the development of China's non-ferrous metal industry. On the other hand, the waste water of printed ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B5/10C22B15/00C22B23/02
CPCY02P10/20
Inventor 孟军吴金宝
Owner 杭州富阳申能固废环保再生有限公司
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