The separation of Pb-Zn and excellent technical indexes are achieved under the condition of pH =11.8～12.2 and the pulp potential252～-272mV with lime as regulator and stabilizer of pH and pulp potential,DDTC(diethyl dithiocarbamate,acronym for DDTC) as galena flotation collector and ZnSO_4+Na_2SO_3 as combined flotation depressant of sphalerite and marmatite.
In this paper, the authors have systematically determined and calculated,by means of fluidal inclusion research, the conditions of every deposit-formingstage of Kanjiawan gold (lead, zinc) deposit in Hunan, such as temperature(264～139℃), pressure (133～13bar), salinity (11. 00～3. 34 wt-% NaCl, usingNaCl as the calculation criterion), and the value of pH (6. 62～7. 66), etc.
The oxidation ratio of some lead zinc ore is 92%. Using sulphurization xanthate to float lead, sulphurization amine to float zinc, no desliming technology, and D 6 modifier can obtain this result: lead concentrate contains lead 60 80%, zinc 5 84%, and lead recovery rate is 92 72%, zinc concentrate contains zinc 36 4%, lead 0 5%, and zinc recovery rate is 83 22%.
On the base of the accurate measure of the lead and zinc mine tailing, it has been found that in the mine tailing, the concentration of lead is the highest, after that is zinc, copper, arsenic and mercury.
The paper also presents the measures and methods for wasteless mining by introducing the research of tail filling mining and the technological experiment of treating leaching residue and the extraction of lead and zinc from the waste rock.
Electric-field-induced phase transition in single-crystal lead zinc niobate
The behavior of lead zinc niobate, a relaxor ferroelectric, in electric fields has been studied by dielectric, optical transmittance, and small-angle light scattering techniques.
Research on natural plants in the lead/zinc mine in northwestern Guizhou Province
The complex antimony-lead/zinc deposit at Rujevac/Yugoslavia; its specific geochemical and mineralogical features
Since 1973, about 500,000 tons/yr of metal-rich particulate tailings from a lead/zinc flotation mill have been discharged through a submarine outfall into a two fjord system on the west coast of Greenland.