A method for harmless disposal of electroplating sludge
A technology for electroplating sludge and smelting slag, which is applied in the direction of cement production, process efficiency improvement, solid waste removal, etc., can solve the problem of high processing cost, achieve the effect of maintaining reaction temperature, short processing time, and good recycling benefits
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Embodiment 1
[0033] Electroplating sludge composition: Fe 18.23%, Si 3.02%, Al 4.11%, Ca 7.65%, Ba 0.34%, Cr 4.22%, Cu 6.95%, Ni 2.71%, Pb 0.82%, Zn 7.54%.
[0034] Coke, whose carbon content is 82.21%; industrial oxygen, whose volume percentage concentration of oxygen is ≥99%; quartz sand, whose SiO 2 The content is 91.59%; natural gas, its CH 4 Content ≥ 85%.
[0035] The electroplating sludge, quartz sand, and coke are weighed and batched, and the added quartz sand is controlled to meet the initial requirements of the smelting slag type as FeO and SiO 2 The mass ratio is 1.2:1, and the quality of the coke is controlled to be 20% of the mass of the electroplating sludge; then, the electroplating sludge, quartz sand, and coke are added to the granulator for mixing and granulation, and the particle size of the furnace material after mixing is It is 8-20cm long and has a water content of 6%.
[0036] Add the granulated materials into the melting furnace, control the melting temperature a...
Embodiment 2
[0046] Main components of electroplating sludge: Fe 16.45%, Si 3.45%, Al 4.42%, Ca 7.25%, Ba 0.35%, Cr 4.65%, Cu 7.25%, Ni 2.21%, Pb 0.83%, Zn 8.25%
[0047] Pulverized coal, whose carbon content is 72.32%; industrial oxygen, whose volume percentage concentration of oxygen is ≥ 99%, and SiO of quartz sand 2 The content is 92.33%; natural gas, its CH 4 Content ≥ 85%. .
[0048] The electroplating sludge, quartz sand, and pulverized coal are weighed and batched, and the added quartz sand is controlled to meet the initial requirements of the smelting slag type as FeO and SiO 2 The mass ratio is 1.8:1, and the quality of the pulverized coal is controlled to be 30% of the mass of the electroplating sludge; then, the electroplating sludge, quartz sand, and pulverized coal are added to the granulator for mixing and granulation, and the pulverized coal is put into the furnace after mixing. The particle size of the material is 6-25mm, and the water content is 9%.
[0049] Put the g...
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