In order to understand the measurement of iron content in iron ore theoretically,the experimental conditions of SnCl2-TiCl3-K2Cr2O7 were researched and analysized.The method of SnCl2-TiCl3-K2Cr2O7 was that hydrochloric acid plus sodium fluoride under the thermal decomposition,so that iron oxides and silicates have become iron oxide into the solution.First of all,the stannous chloride makes the ferric ions reduced to two-valent iron,other ferric iron reduced to ferrous iron by titanium trichloride to generat...
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