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Abstract

In a previous paper ⁴ in this series, it was shown that, in gen eral, flotation of colloidal material is improved when the electro kinetic potential of the particles is lowered and flocculation results. Similarly, the agglomerated state has been found necessary for satisfactory flotation of minerals. The work reported here is a com prehensive study of the flotation of sulfur black dye, including the effect of concentration of dye and of various electrolytes on the process. The apparatus used was that described by Clanton, Cam eron, and Magoffin. ⁴ Migration velocities of the flocculated dye were measured by the microscopic method, using the improved cell suggested by Moyer.⁶ The dyes investigated are registered under trade names. Sulfogene Carbon MCF is a product of E. I. duPont de Nemours & Co., Inc. Sodysul Black RACF was obtained from the Southern Dyestuff Corporation and is described as a solution of sulfur black with sodium sulfide and carbonate.

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References

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Fundamental Properties of Textile Wastes. IX. Concentration of Sulfur Black Dyes by Froth Flotation

Abstract

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