Application of cationic etherified starch in scheelite flotation
A cationic etherification and scheelite technology, applied in flotation, solid separation, wet separation, etc., can solve the problems of poor quality of flotation concentrate, low effective recovery rate, complicated process, etc., and achieve low environmental pollution , easy to degrade, and a wide range of sources
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[0024] Example 1:
[0025] The flotation test was carried out with XFGⅡ hanging tank flotation machine. First, add 2g of pure minerals to the flotation tank, then add 35ml of distilled water, adjust the slurry for 1min, adjust the slurry pH to 7 with HCl and stir for 2min, then add a certain amount of The cationic etherified starch inhibitor was stirred for 3 minutes, sodium oleate 60mg / L was stirred for 3 minutes, and then bubbled for another 4 minutes. After the flotation test is over, the foam product is filtered, dried, weighed, tested and the recovery rate calculated.
[0026] The test results of Example 1 are shown in Table 1.
[0027] Table 1 Experimental results of inhibitory behavior of cationic etherified starch dosage on minerals 1 (pH=7)
[0028]
[0029]
Example Embodiment
[0030] Example 2:
[0031] The flotation test is carried out by XFGⅡ hanging tank flotation machine. First, add 2g of pure minerals to the flotation tank, then add 35ml of distilled water, adjust the slurry for 1min, adjust the slurry pH to 9 with NaOH and stir for 2min, then add a certain amount of cations in sequence The etherified starch inhibitor was stirred for 3 minutes, sodium oleate 60mg / L was stirred for 3 minutes, and then bubbled for another 4 minutes. After the flotation test is over, the foam product is filtered, dried, weighed, tested and the recovery rate calculated.
[0032] Under the condition of pH=9, the inhibitory effects of cationic etherified starch on fluorite, calcite and scheelite are shown in Table 2.
[0033] Table 2 Experimental results of inhibitory behavior of cationic etherified starch on minerals 2 (pH=9)
[0034]
Example Embodiment
[0035] Example 3:
[0036] The flotation test is carried out by XFGⅡ hanging tank flotation machine. First, add 2g of pure minerals to the flotation tank, then add 35ml of distilled water, adjust the slurry for 1min, adjust the slurry pH to 12 with HCl and stir for 2min, then add a certain amount of The cationic etherified starch inhibitor was stirred for 3 minutes, sodium oleate 60mg / L was stirred for 3 minutes, and then bubbled for another 4 minutes. After the flotation test is over, the foam product is filtered, dried, weighed, tested and the recovery rate calculated.
[0037] Under the condition of pH=12, the inhibitory effects of cationic etherified starch on fluorite, calcite and scheelite are shown in Table 3.
[0038] Table 3 Experimental results of inhibitory behavior of cationic etherified starch on minerals 3 (pH=12)
[0039]
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