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- W2394442743 abstract "Reverse flotation and acid leaching technology were attempted to purify natural powder quartz containing impurities of andalusite, diaspore and iron oxide. The results show that the andalusite impurity can be removed effectively by reverse flotation method, and the optimum reverse flotation conditions are as follows: 3.3?10-3 mol/L sodium oleate as collecting agent, 4.7?10-3 mol/L disodium hydrogen phosphate as inhibitor, and pH value of 8.5. Also the acid leaching method is effective for removal of the diaspore and iron oxide impurities. The optimum acid leaching process is as follows: the quartz powder is added into 18% hydrochloric acid, whose mass ratio is 3∶1, then keep the mixture at 60 ℃ for 0.5 h, and at room temperature for 8 h. After the reverse flotation and acid leaching process, SiO2 content in the powder quartz increases from 80.02% to 98.49%, and the content of the Al impurity decreases from 9.86% to 0.26%, and the content of the Fe impurity decreases from 182 μg/g to 56.3 μg/g. Its whiteness was measured to increase from 76.0% to 89.3%." @default.
- W2394442743 created "2016-06-24" @default.
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- W2394442743 date "2014-01-01" @default.
- W2394442743 modified "2023-09-25" @default.
- W2394442743 title "Study on Purification and Whitening of Natural Powder Quartz" @default.
- W2394442743 hasPublicationYear "2014" @default.
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