A kind of submerged flotation equipment and separation method for bauxite
A bauxite and subsidence technology, applied in flotation, solid separation and other directions, can solve the problems of difficulty in floating of coarse grains, reduced recovery rate of coarse grained minerals, and difficulty in making full use of the space of flotation tank, so as to achieve lower grade, The effect of improving the flotation probability and the secondary enrichment probability
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Embodiment 1
[0036] The ore slurry is fed into the subsidence flotation equipment through the slurry pump at a feeding pressure of 0.25Mpa. The mineralization system of the equipment is divided into three layers from the inside to the outside and distributed in a ring shape, with 1 in the center, 6 in the middle, and the outermost There are 12 layers; the mineralizing nozzle sprays upwards at an angle of 15° to the horizontal. Through the ore pulp of the submerged flotation equipment, after a roughing, a beneficiation, and a scavenging flotation process, the indicators are obtained in the following table 2:
[0037] Table 2 Example 1 ore dressing desiliconization results (%)
[0038] sample name Al 2 o 3
[0039] It can be seen from Table 2 that in Example 1, under the premise that the concentrate grade meets the requirements of the Bayer process for producing alumina raw materials, the concentrate yield is 70%, the alumina recovery rate is 80.22%, and the concentrate parti...
Embodiment 2
[0041] The ore slurry is fed into the subsidence flotation equipment through the slurry pump at a feeding pressure of 0.35Mpa. The mineralization system of the equipment is divided into three layers from the inside to the outside and distributed in a ring shape, with 1 in the center, 7 in the middle, and the outermost There are 11 layers; the mineralization nozzle sprays upward at an angle of 30° to the horizontal. Through the ore pulp of the submerged flotation equipment, after a roughing, a beneficiation, and a scavenging flotation process, the indicators are obtained in the following table 3:
[0042] Table 3 Example 2 Beneficiation and desiliconization results (%)
[0043] sample name Al 2 o 3
[0044]It can be seen from Table 3 that in Example 2, under the premise that the concentrate grade meets the requirements of the Bayer process for producing alumina raw materials, the concentrate yield is 70.29%, the alumina recovery rate is 80.55%, and the concentra...
Embodiment 3
[0046] The ore slurry is fed into the subsidence flotation equipment through the slurry pump at a feeding pressure of 0.45Mpa. The mineralization system of the equipment is divided into three layers from the inside to the outside and distributed in a ring shape, with 1 in the center, 8 in the middle, and the outermost There are 10 layers; the mineralization nozzle sprays upward at an angle of 45° to the horizontal. The ore pulp passed through the submerged flotation equipment is subjected to a roughing, a beneficiation, and a scavenging flotation process, and the indicators are obtained in the following table 4:
[0047] Table 4 Example 3 ore dressing desiliconization results (%)
[0048] sample name Al 2 o 3
[0049] It can be seen from Table 4 that in Example 3, under the premise that the concentrate grade meets the requirements of the Bayer process for producing alumina raw materials, the concentrate yield is 70.11%, the alumina recovery rate is 80.38%, and ...
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