Method for measuring concentration of low-valent titanium ions

A low-valent titanium ion and measurement method technology, applied in the field of molten salt electrolysis of titanium metal, can solve the problem of unreported low-valent titanium ion concentration detection method and the like

Inactive Publication Date: 2017-05-31
UNIV OF SCI & TECH BEIJING
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  • Method for measuring concentration of low-valent titanium ions
  • Method for measuring concentration of low-valent titanium ions
  • Method for measuring concentration of low-valent titanium ions

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Embodiment 1

[0048] The low-valent titanium salts of different concentrations are prepared through the refining process. The electrolyte salt is heated to a preset temperature under the protection of argon, and the titanium sponge frame is put into the eutectic salt. Vacuumize the resistance furnace, and put TiCl 4 The liquid is slowly injected into the reactor. Controlling TiCl with a valve 4flow rate to control titanium sponge with TiCl 4 the reaction rate. Unquantified TiCl 4 After all the eutectic salts are introduced, keep the heat and stand still for 8 hours, so that the Ti and the titanium in the molten salt can fully react. Then, the temperature was lowered to room temperature under the protection of argon, and the eutectic salt containing a preset concentration of low-valent titanium was taken out and stored in a glove box for detection.

[0049] Put deionized water in figure 1 In the deionized vacuum deaerator shown. The vacuum deoxygenation device is a three-necked flask...

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Abstract

The invention mainly belongs to the field of electrolysis of metal titanium through molten salt, and particularly relates to a method for measuring the concentration of low-valent titanium ions. The method is used for measuring the concentrations of titanium ions in various valence states in a mixed electrolyte through a molten salt electrolysis process, and the valence state of the titanium ions in the mixed electrolyte is Ti<n+>(n=2, 3, 4). The method comprises the following steps: (1) measuring the concentration W1 of Ti<2+> in the mixed electrolyte through a hydrogen measurement method; (2) measuring the concentration W2 in the mixed electrolyte through ammonium ferric sulfate titrimetry based on a solution subjected to hydrogen measurement, wherein the concentration of Ti<3+> is equal to a value obtained by subtracting W1 from W2; and (3) measuring the concentration of Ti<4+> through spectrophotometry. The method can be used for measuring the concentrations of the low-valent titanium ions in various valence states through the molten salt electrolysis process, so as to obtain a relatively stable electrolyte system and guide metal electrolysis preparation or metal titanium electrolysis and refining industrial production.

Description

technical field [0001] The invention mainly belongs to the field of molten salt electrolytic titanium metal, and in particular relates to a method for measuring the concentration of low-valent titanium ions. Background technique [0002] Titanium is located in subgroup IV of the fourth period of the periodic table, with an atomic number of 22. Due to its high specific strength (ratio of tensile strength to density), small specific gravity, heat resistance, non-magnetic, weldable and many other advantages, it is widely used in military fields such as aviation, aerospace, weapons, as well as petroleum, metallurgy and other fields. [0003] High-purity metals are mainly used in electronic chemical materials and special alloy materials. With the development of large-scale integrated circuits and the rapid expansion of the market for electronic and electrical products such as computers, the market demand for high-purity metals continues to grow. High-purity metals are a kind of ...

Claims

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Application Information

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IPC IPC(8): G01N7/00G01N31/16G01N21/31C25C3/28
CPCC25C3/28G01N7/00G01N21/31G01N31/16
Inventor 焦树强田栋华焦汉东
Owner UNIV OF SCI & TECH BEIJING
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