Method for detecting phosphorus content in metallurgy raw materials
A technology of phosphorus content and raw materials, which is applied in the direction of analyzing materials through chemical reactions and material analysis through observing the influence of chemical indicators, can solve the problems of cumbersome and time-consuming methods and low accuracy, and achieve thorough reduction The reduction speed is fast and the effect of reducing the experiment time
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[0053] Example 1
[0054] 1) The standard sample GBW07221 of magnetite concentrate produced by Wuhan Iron and Steel Research Institute is used as the sample.
[0055] 2) Weigh 0.5000g of magnetite concentrate standard sample, place it in a 300mL polytetrafluoroethylene beaker, moisten it with a small amount of water, add 20mL concentrated hydrochloric acid, cover with a watch glass, heat at low temperature for 30min, add 5mL concentrated hydrofluoric acid , 5mL concentrated nitric acid, continue to heat for 30min, add 5mL concentrated perchloric acid, heat at low temperature to emit perchloric acid smoke, continue to heat the smoke to be wet salt. Cool, add 10 mL of hydrochloric acid with a concentration of 10% by volume, wash the wall of the cup with a small amount of water, use an electric stove to heat the salt, remove the beaker from the electric stove, cool to room temperature, and dilute the test solution to 100 mL. Dry the test solution with medium-speed filter paper.
[005...
Example Embodiment
[0059] Example 2
[0060] 1) The sinter standard sample GBW07219a produced by Wuhan Iron and Steel Research Institute is used as the sample.
[0061] 2) Weigh 0.2000g sintered ore standard sample GBW07219a, place it in a 300mL polytetrafluoroethylene beaker, wet it with a small amount of water, add 25mL concentrated hydrochloric acid, cover with a watch glass, and after heating at low temperature for 30min, add 5mL concentrated hydrofluoric acid , 5mL concentrated nitric acid, continue heating for 30min, add 5mL concentrated perchloric acid, heat at low temperature to emit perchloric acid fumes, continue to heat the fumes to become wet salt. Cool, add 10 mL of hydrochloric acid with a concentration of 10% by volume, rinse the cup wall with a small amount of water, use an electric stove to heat to dissolve salts, remove the beaker from the electric stove, cool to room temperature, and dilute the test solution to 100 mL. Dry the test solution with medium-speed filter paper.
[0062] ...
Example Embodiment
[0065] Example 3
[0066] 1) The dolomite standard sample 0247 produced by Wuhan Iron and Steel Research Institute was used as the sample.
[0067] 2) Weigh 1.0000g of dolomite standard sample 0247, place it in a 300mL polytetrafluoroethylene beaker, moisten it with a small amount of water, add 20mL concentrated hydrochloric acid, cover with a watch glass, and after heating at low temperature for 30 minutes, add 5mL concentrated hydrofluoric acid , 5mL concentrated nitric acid, continue to heat for 30min, add 5mL concentrated perchloric acid, heat at low temperature to emit perchloric acid smoke, continue to heat the smoke to be wet salt. Cool, add 10 mL of hydrochloric acid with a concentration of 10% by volume, rinse the cup wall with a small amount of water, use an electric stove to heat to dissolve salts, remove the beaker from the electric stove, cool to room temperature, and dilute the test solution to 100 mL. Dry the test solution with medium-speed filter paper.
[0068] 3) ...
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