Floatation method and device for coarse-particle floatation column
A flotation column and coarse particle technology, used in flotation, solid separation, etc., can solve the problems of chemical properties that have a great influence on the flotation effect, small contact probability between bubbles and particles, and fine-grained gangue staying in it. Expand the upper limit of flotation particle size, advanced equipment, and improve the effect of pipeline blockage
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specific Embodiment 1
[0050] The test material is a certain bauxite. Multi-element chemical analysis of raw ore, in which Al 2 o 3 The mass fraction accounts for 62.3%, SiO 2 The quality score accounts for 11.54%. The aluminum-silicon ratio of raw ore is 5.40, which belongs to the typical low-aluminum-silicon ratio bauxite. Crush the raw ore to -3mm and mix well. Grinding until the grinding particle size is -0.074mm accounts for 75%. The analysis results of the grinding particle size are shown in Table 3.
[0051] Table 1 Polychemical analysis results of ore samples (mass fraction) / %
[0052]
[0053] Table 2 Mineral composition of test ore samples / %
[0054]
[0055] Table 3 Grinding particle size composition
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[0057]
[0058] It can be seen from Table 2 that when the grinding particle size reaches -200 mesh, the particle size accounts for 75%, and the -0.038mm particle size accounts for 27.48%. In terms of bauxite selection, the grinding fineness can be appropriately ...
Embodiment 2
[0066] In the test, 2kg of grinding products were weighed in the mixing tank, and the concentration of the pulp was adjusted to 24%. Sulfuric acid was added to the pulp with the adjusted concentration as a pH regulator and inhibitor, and the collector GJBW was added after stirring for 2 minutes. The pulp is fed into the flotation column by the pulp pump, and the flotation time is 10 minutes, and the foam is scraped every 5 minutes.
[0067] Table 5 Test results of the new flotation column
[0068]
[0069] It can be seen from the grade curve in the figure that with the increase of the grinding fineness, the P in the concentrate 2 o 5 The grade of the ore showed a slow growth trend. When the grinding fineness exceeded 88.53%, the concentrate grade decreased. It can be seen from the recovery curve that with the increase of the grinding fineness, the P in the concentrate 2 o 5The recovery rate showed a trend of first increasing and then decreasing. This is because when th...
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