Device for measuring high-temperature liquid level of sponge titanium in closed container

Abstract

The invention discloses a device for measuring the high-temperature liquid level of sponge titanium in closed container. The device comprises a connecting sleeve, a thermal insulation sleeve, a radarliquidometer and a thermal insulation glass plate, wherein the bottom of the connecting sleeve is connected with the top big cover of a sealed reactor used for sponge titanium production to enable theinner part of the sealed reactor to be communicated with the connecting sleeve; the top of the connecting sleeve is connected with the bottom of the thermal insulation sleeve through a flange; the radar liquidometer is arranged on the top of the thermal insulation sleeve; a radar liquidometer antenna downwards extends into the thermal insulation sleeve, and the instrument display unit of the radar liquidometer is upwards exposed out of the thermal insulation sleeve; in addition, through a fixed sealing structure, the fixing of the radar liquidometer on the thermal insulation sleeve and the sealing of the top of the thermal insulation sleeve are realized; the bottom of the thermal insulation sleeve is also provided with the thermal insulation glass plate which can be penetrated by radar wave; and an argon blowing pipe which is provided with an opening on the thermal insulation sleeve is arranged between the thermal insulation glass plate and the radar liquidometer. By use of the device, the non-contact measurement of the radar liquidometer for the high-temperature liquid level can be realized, and in addition, the device can be safely used in sealed high-temperature environment.

Description

technical field [0001] The invention relates to the technology in the field of non-ferrous metal smelting equipment, in particular to a device for online real-time measurement of the high-temperature liquid level of sponge titanium in a closed container. Background technique [0002] At present, the industrial production of sponge titanium is mainly the method of reducing titanium tetrachloride with liquid magnesium at high temperature. In the reduction reaction process, excess liquid magnesium is first added to the closed reactor, and then liquid titanium tetrachloride is continuously added, and the Mg element continuously converts TiCl 4 Ti elements in the reduction replacement, resulting in spongy metal titanium and liquid magnesium chloride. Due to the limited volume, magnesium chloride needs to be discharged in stages, which will cause the liquid level in the reactor to fluctuate up and down. [0003] The liquid level height is an important process parameter in the pr...

AI Technical Summary

Problems solved by technology

In addition, out of control of the liquid level will also lead to a sharp rise or fall of the reaction zone, which is not conducive to the control of the reduction reaction temperature, which will cause the content of impurity elements in the product to exceed the standard; or if the temperature is too high, the product will be sintered, and impurities such as Fe and Cl in the sponge titanium will increase.

[0004] The currently used liquid level detection method and its disadvantages are: ①Steel rod insertion measurement method; this method is convenient, fast and accurate to measure, but the steel rod is heated to a red state when it is pulled out from the reaction zone, which is easy to burn and is more dangerous; in addition , when misoperation occurs, the reactor is very easy to gas in, resulting in an increase in the O and N content of titanium lumps; ② Estimation method: Calculated according to the initial liquid level after adding liquid magnesium, the amount of titanium tetrachloride added, and the amount of magnesium chloride discharged, However, when the measurement error of the feeding flowmeter is large, the accuracy of the measurement data is low

③Pressure difference measurement method: Use the bubble blowing method to measure the pressure change in the reactor, and then according to the formula Calculate the corresponding liquid level height, but this method is easy to block the pipe, has a high risk factor, and can also cause pollution of the sponge titanium during the reduction process

Images