Rapid determination of total iron content in vanadium titanomagnetite
A vanadium-titanium magnetite, rapid determination technology, applied in chemical analysis by titration method, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, etc., can solve the problem of total iron analysis Accuracy is greatly affected, does not meet the requirements of rapid analysis, and increases the cost of analysis, etc., to achieve the effect of rapid on-site analysis, reduction of uncertain conditions and system errors, and rapid determination of methods
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Embodiment 1
[0032] Get the vanadium-titanium magnetite of a certain mine, wherein the total iron content is quickly measured, and the measuring method comprises the following steps in turn:
[0033] 1) take by weighing the vanadium-titanium magnetite sample to be measured that is 0.1018g, place in the 250mL Erlenmeyer flask;
[0034] 2) Add a sufficient amount of ore dissolving solution to the Erlenmeyer flask. The composition of the ore dissolving solution is 5 mL of sodium fluoride solution with a volume mass fraction concentration of 50 g / L, and 12.0 mL of sulfur-phosphorus mixed acid solution with a volume ratio of 1:1. and 2mL concentrated nitric acid, shake the bottle gently to disperse the sample, heat it on a high-temperature electric furnace until sulfuric acid fumes come out of the bottle to the mouth of the bottle, remove it, and cool slightly;
[0035] 3) Add 10 mL of hydrochloric acid solution with a volume ratio of 1:3;
[0036] 4) Add dropwise a stannous chloride solution ...
Embodiment 2
[0059] Get the vanadium-titanium magnetite of a certain mine, wherein the total iron content is quickly measured, and the measuring method comprises the following steps in turn:
[0060] 1) Weigh 0.2005g of the vanadium-titanium magnetite standard sample GBW07226 to be measured, and place it in a 250mL conical flask;
[0061] 2) Add a sufficient amount of ore dissolving solution to the Erlenmeyer flask, the composition of the ore dissolving solution is: 8mL potassium fluoride solution with a volume mass fraction of 50g / L, 20mL sulfur-phosphorus mixed acid solution with a volume ratio of 1:1, 3mL Concentrated nitric acid, gently shake the bottle to disperse the sample, heat it on a high-temperature electric furnace until sulfuric acid fumes come out of the bottle to the mouth of the bottle, remove it, and cool slightly;
[0062] 3) Add 15mL of hydrochloric acid solution with a volume ratio of 1:2;
[0063] 4) Add dropwise a stannous chloride solution with a volume mass fractio...
Embodiment 3
[0081] Get the vanadium-titanium magnetite of a certain mine, wherein the total iron content is quickly measured, and the measuring method comprises the following steps in turn:
[0082] 1) Weigh 0.4997g vanadium-titanium magnetite standard sample GBW07224, and place it in a 1000mL conical flask;
[0083] 2) Add a sufficient amount of ore dissolving solution to the Erlenmeyer flask, the composition of the ore dissolving solution is: 30mL volume mass fraction 50g / L sodium fluoride solution, add 90mL sulfur phosphorus mixed acid solution with a volume ratio of 1:1, add 10mL of concentrated nitric acid, gently shake the bottle to disperse the sample, heat it on a high-temperature electric furnace until sulfuric acid fumes come from the bottle to the mouth of the bottle, remove it, and cool slightly;
[0084] 3) Add 30mL of hydrochloric acid solution with a volume ratio of 1:2;
[0085] 4) Add dropwise a stannous chloride solution with a volume mass fraction of 60g / L (dissolve 6g...
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