Abstract
The desorption of dodecylamine chloride (DDACl) from the precovered surface of a quartz sample during flotation tests has been studied. The surface was precovered from methanolic solution of DDACl. At a coverage greater than half a calculated monomolecular layer desorption of the collector was found. At one monolayer coverage this desorption amounted to 0.35 monolayer. The remaining 0.65 monolayer made the surface sufficiently hydrophobic that 1.5 g of the sample could be floated with 40 ml of nitrogen. The adsorption of DDACl from aqueous solutions was also studied. In the range 10 −5-10 −4 M the maximum adsorption corresponded to ∼ 1 monolayer. A sample of quartz covered in this way floated in only ∼ 83%. At the same DDACl coverage hydrophobization of the quartz surface seemed to be more effective when the collector was adsorbed from a methanolic solution. This was shown by a higher flotation activity of the sample and a complete reduction of polar interactions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
