Selective flocculation of fine-grained minerals in advance is one of the most promising methods for improving flotation efficiency. Whether it is to study collectors with high-efficiency flocculation, or to search for selective polymeric flocculants, selective flocculation can be achieved. When the amount of minerals to be separated in the treatment of bauxite suspension is high, selective flocculation should be rationally applied as an independent mineral processing operation. The selective flocculation process includes: (1) dispersing and stabilizing the slurry by physical-chemical methods; (2) selectively flocculating the slurry with the polymer; (3) classifying the material according to a certain particle size to obtain flocculated sediment and overflow. The product overflows as a slurry fraction in a dispersed state.
A kaolinite-monohydrate soft bauxite bauxite is treated by a coarse mechanical mechanical disintegration-fine particle selective flocculation process, as shown in Figure 1a. The results of the selection are shown in Table 1. It can be seen from the table that the ore contains 53.3% Al 2 O 3 and 17.5% SiO 2 . The bauxite concentrate contains Al 2 O 3 62.4%, SiO 2 10.2%, and aluminum recovery rate of 58.1. %, the ratio of aluminum to silicon increased from 3.1 to 6.2, and a certain sorting effect was obtained.
Table 1 A kaolinite-monohydrate boehmite ore selection index
product name | Yield/% | grade/% | Recovery rate/% | Aluminum to silicon ratio | ||
Al 2 O 3 | SiO 2 | Al 2 O 3 | SiO 2 | |||
Bauxite concentrate Intermediate product Kaolinite products Raw ore | 50 30 20 100.0 | 62.4 54.0 31.2 53.5 | 10.2 24.0 25.9 17.5 | 58.1 30.2 11.7 100.0 | 29.2 41.2 29.6 100.0 | 6.2 2.3 1.2 3.1 |
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Specifications:
Material Membrane: PVDF
Core:PP/SS304L
O ring/Gasket: Silicone/Viton/TEV/EPDM
Specifications: Pore size (um):0.10, 0.20, 0.45, 0.80, 1.00, 3.00.5.00
Outer Diameter(OD): 68mm / 70 mm (can be decided by client)
Length (inch): 5, 10, 20, 30, 40
Endcaps: DOE, SOE (code2, code3, code7, code8)
Technical data: Effective filtration area (10"): ≥0.6 M2
Normal working temperature: ≤65 ºC/ 149ºF
Max. working temperature: 90 ºC/ 194ºF (P≤1.0 bar)
Max. differential pressure: 4.2 bar
PH value: 1-13
Sterilization method: Autoclaving (121±2 ºC) within 30 minutes
water flow rate with different pressure see the chart
Test: 100% integrity test :23 ºC; ≥95% Ethanol
0.2um≥0.70 bar; 0.45um≥0. 50bar
Applications: winery, chemical and electronical inudstry
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