Column-slot combined technology for grading calcium collophanite
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A combined process and collophosite technology, applied in flotation, solid separation, etc., can solve problems affecting normal production, pipeline blockage, etc., achieve the effects of reducing chemical consumption, easy regulation, and prolonging flotation time
Active Publication Date: 2013-01-23
YUNNAN PHOSPHATE CHEM GROUP CORP
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[0004]2 Because the height of the flotation column is relatively high, the process flow of the column flotation process requires pumping for middling circulation,
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Embodiment 1
[0026] A calcareous colloid ore mining area in Yunnan, according to the above-mentioned process plan of the present invention, at room temperature, add YP4: 20.60Kg / t, YP3: 4.5 Kg / t, YP2-3: 3.0 Kg / t, and reverse float and concentrate Use 130M 3 Flotation machine, select and add YP4: 5.5Kg / t, YP2-3: 1.5 Kg / t; the following indicators can be obtained, raw ore P 2 o 5 Content 22.0wt%, MgO content 5.40wt%, concentrate P 2 o 5 Content 30.10wt%, MgO content 0.80wt% ， Yield 61.61% ， The recovery rate is 84.30%, and the magnesium removal rate is 90.87%.
Embodiment 2
[0028] A calcareous colloid ore mining area mine sample, according to the above-mentioned process plan of the present invention, at room temperature, add YP4: 19.45Kg / t, YP3: 4.0 Kg / t, YP2-3: 2.5Kg / t, reverse flotation concentration using 130M 3 Flotation machine, select and add YP4: 5.0Kg / t, YP2-3: 1.3 Kg / t; the following indicators can be obtained, raw ore P 2 o 5 Content 24.0wt%, MgO content 4.50wt%, concentrate P 2 o 5 Content 30.50wt%, MgO content 0.74wt% ， Yield 68.60% ， The recovery rate was 87.18%, and the magnesium removal rate was 88.72%.
Embodiment 3
[0030] A calcareous colloid ore mining area mine sample, according to the above-mentioned process plan of the present invention, at room temperature, add YP4: 25.45Kg / t, YP3: 4.8 Kg / t, YP2-3: 3.0Kg / t, reverse flotation concentration using 130M 3 Flotation machine, select and add YP4: 6.5Kg / t, YP2-3: 1.8 Kg / t; the following indicators can be obtained, raw ore P 2 o 5 Content 20.15wt%, MgO content 6.13wt%, concentrate P 2 o 5 Content 29.64wt%, MgO content 0.65wt% ， Yield 55.84% ， The recovery rate was 82.14%, and the magnesium removal rate was 94.08%.
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Abstract
The invention discloses a column-slot combined technology for grading calcium collophanite,. The column-slot combined technology relates to a beneficiation method for removing carbonate impurities from the calcium collophanite by a reverse flotation manner, and comprises the following steps of (1), crushing and grinding collophanite containing the carbonate impurities, fully dissociating the collophanite and the carbonate impurities, and controlling size mixing concentration; (2), introducing ore pulp to a stirring slot; adding a ore pulp inhibitor (sulfuric acid and phosphoric acid), controlling a pH value of the ore pulp; adding a collecting agent; enabling uniformly-mineralized ore pulp to enter a flotation column, wherein foams of the flotation column are rougher tailings; bottom flow of the flotation column is rougher concentrate; (3), enabling the rougher concentrate to flow into a selection stirring slot; adding an inhibitor (the sulfuric acid), controlling the pH value of the ore pulp to be 4.0-4.5; adding the collecting agent, enabling the uniformly-mineralized ore pulp to enter a 130M<3> flotation machine; performing pneumatic flotation; finally, obtaining foam products, namely, the carbonate impurities, wherein a product in the slot is a high-grade phosphate concentrate product.
Description
technical field [0001] The invention relates to a beneficiation method for removing carbonate impurities from calcareous collophosphate by reverse flotation. Background technique [0002] With the rapid development of the phosphate fertilizer industry, the mining and consumption of phosphate rock have also increased sharply, and the overall grade of phosphate rock has been declining, resulting in more and more complex impurity components in phosphoric acid. The development of low-grade phosphate rock has become a top priority. For medium and low-grade calcareous collophosite, as long as the impurities are carbonate impurities, currently a single reverse flotation process is mainly used to remove carbonate impurities and enrich useful ores, which is relatively simple in collophosite separation. The flotation machine used in traditional mineral processing equipment has the problems of large floor area and high energy consumption; although the flotation column has the advantag...
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