Flotation is the most widely used process in the world for extracting min erals. The process also recovers several metals from a single ore body into two or more concentrated prod ucts.
The point is the flotation bubbles have limited ability so if the iron ore particle size processed by the crushing and grinding machines are too large for the bubbles the iron ore granules have still remained that will be a large failure for the iron ore flotation process. Another factor is the pulp concentration of the iron ore. High .
Corn starch has been used in iron ore flotation in Brazil since 1978. The trade name of the reagent was Collamil consisting of a very fine and very pure product. The amylose plus amylopectin content reached 98% to 99% dry basis the balance being represented by minor contents of fibres mineral matter oil and proteins.
The flotation process and related flotation cells are widely used for treating metallic and nonmetallic ores and in addition it is receiving an ever widening application in other industries. A greater tonnage of ore is treated by flotation than by any other single process.
(8) Along with the flotation process laboratory flotation tank’s water level will decrease in order to guarantee the scrap we should add water continuously and clean the particles that attached to agitation axis and tank wall. The added water should not backload foam and wiper.
The ore from the mine contains about 2% copper. To get at the copper the first stage is crushing in huge cylindrical ball mills. Ball mills crush the ore into a fine powder. (Courtesy of Rio Tinto.) Stage 2: Froth flotation The powdered ore is mixed with a special paraffin oil which makes the copper mineral particles water repellent.
Certain sections are used for wet grinding marginal ore to below 0.3mm followed by a copper flotation process similar to that used for the underground ore. Concentrate is pumped to the dewatering plant while magnetite is removed from the tailings before thickening and pumping final product to Foskor for phosphate flotation.
FLOTATION MACHINES “Sub-A” Flotation Cells of the cell to cell type are recommended for all the flotation steps in this treatment circuit. A high degree of selectivity is very essential in the roughing scavenging cleaning and recleaning steps throughout since the bulk of the ore is pyrite and it must be rejected into the final mill tailing.
At the surface the ore is subjected to additional crushing and fine grinding. A flotation process is used to separate the silver-bearing galena and tetrahedrite from other ore minerals and waste rock particles (tailings) to form mineral concentrates. Development of the flotation process occurred in the early days of mining at Broken Hill.