Gamma Flotation
Flotation is a well known surface chemistry-based particulate materials separation process which utilizes differences in wettabilities of solids. The operating mechanism in the process is that finely divided particles are rendered hydrophobic by the adsorption of suitable flotation reagents, so that they are captured by the rising stream of bubbles which collide with them. Particles […]
Small Laboratory Flotation Machine
The automatic froth remover is only one of the great characteristics this solidly built and very economic digitally controlled variable speed (0-2780 RPM) laboratory flotation machine is made to order. You select the one (1) acrylic tank volume you want: 0.5 L 1 L 1.5 L 3 L 8 L The float machine will come […]
Flotation of Silicon Carbide
Silicon carbide (SiC) is a synthetic compound which is commercially produced by heating a mixture of metallurgical coke and high-purity silica sand to 2,400° C in an electrical resistance furnace. A method to produce SiC was first discovered in this country by E. G. Acheson in 1891 while studying the reaction of carbon with other […]
Cobalt Flotation Recovery
Cobalt Flotation Studies were conducted on ores from the Viburnum trend in southeast Missouri. The Viburnum trend deposits occur along the flank of the St. Francois Mountains. Ores of the Viburnum trend are characteristically complex mixtures of the sulfide minerals galena, PbS; sphalerite, ZnS; chalcopyrite, CuFeS2; pyrite, FeS2; marcasite, FeS2; and the cobalt-nickel mineral siegenite, […]
Best Air Sparging System for Column Flotation
Objective: Provide a low-maintenance, reliable means of generating bubbles and controlling bubble size for column flotation. Approach: Commercial sparger systems used in flotation columns to process minerals provide only limited means of controlling the size of bubbles generated and the rate of air injection. Generally, these limitations are a detriment to flotation performance, particularly in recovering coarse […]
Column Flotation Parameters
Investigation of coarse bubble column flotation resulted in identification of four distinct beneficiation zones of a flotation column. Comparison of average normalised percent mineral upgrading per foot values (zkn) indicated the relative degree to which these zones contribute to overall column mineral grades and recoveries. The pulp-froth interfacial zone produced the most critical Zkn values […]
Column Flotation of Copper
A practical application of recent design concepts makes it possible to design a column cell to fit a specific set of conditions. The design and operating parameters of a column cell installation that replaced a conventional two stage copper flotation cleaning circuit at MAGMA COPPER COMPANY, SAN MANUEL, ARIZONA using these design concepts is described. […]
Reagent Conditioning to Improve Flotation Selectivity
Reagent conditioning is recognized for its effect on flotation. Among the individual conditioning parameters that were identified to significantly affect the phosphate grade and recovery were reagent dosage, pH, solids content, conditioner configuration, conditioning time, mixing intensity, and the presence of residual clay (Davis, 1992). However, preliminary results identified the conditioning time and mixing intensity […]
Size-by-Size Effects – Flotation Column Cleaning Circuit
PT Freeport Indonesia operates two parallel concentrators for copper-gold flotation at their Tembagapura operations in Irian Jaya, Indonesia. Overall and Stage Performances Freeport staff used the assays from the survey samples along with the material balance program BILMAT to obtain a consistent circuit balance. These results are summarized in Table 1. Pyrite recoveries shown […]
How to Determine the Height of Column Flotation
Pneumatic flotation units are fast replacing conventional flotation cells in both scavenging and cleaning duties. One such unit that has received wide acceptability in industry is the flotation column. While many consider column flotation to be a recent development, its roots date back to the mid-1910s where it was first commercially tested at Inspiration Copper […]