Application of special flotation:

(1) Ion flotation of copper smelting wastewater

When ion flotation is carried out with a medicinal herb, the amount of the yellow drug is equivalent to Cu2+, Pb2+, and the equivalent ratio of Cd2+ is 1.5 to 2.0. Process water having a Cd2+ ≤ 0.05 mg·liter-1 can be obtained.

The ion flotation method using xanthate is worried that the residual xanthate in the treated water is too high, which affects the quality of the treated water. The above process can be used to treat COD in water up to 20 mg·l -1, which meets the emission requirements, but the treatment water is slightly yellow. When mixed with other drainage and neutralized, the final treatment water is transparent and clear.

(2) IPU flotation

The so-called IPU flotation is the abbreviation of ion flotation-precipitate flotation-Uitra fine particlotation.

For example, in lead-zinc processing plant, the thickener overflow zinc concentrate containing copper, zinc, cyanide, cadmium, xanthate and frother.

(3) Adsorption flotation of low concentration radioactive wastewater

Reprocessing process, a low concentration of radioactive waste discharged, contain uranium fission products which have long half-life of strontium, cesium, cerium, ruthenium, zirconium five kinds.

In the first stage, F(OH)3 is used as an adsorption carrier, sodium oleate is used as a collector, and the pH is 6.0 to 8.0. Floating 144Ce, 106Ru, y5Zr; second stage adsorption carrier is a calcium phosphate, sodium naphthenate as collector, 90Sr floating at a pH of 10.5 to 11.0 under the conditions; the third stage is alkylene ferricyanide Cobalt is an adsorption carrier, and octadecylamine acetate is a collector, which floats at a pH of 7.0 to 9.0.

The removal rate of various radioactive materials is high, and the amount of slag is greatly reduced compared with the conventional flocculation precipitation method.

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