In-situ Raman spectrum measurement method and measurement device for high temperature volatile and corrosive fused salt

Abstract

The invention discloses a device and a method for measuring a Raman spectrum of high temperature volatile and corrosive fused salt in situ. The device comprises a DXR (deep X-ray) Raman microscope and an assorted long-corner objective lens thereof, further comprises an external heating furnace (which comprises a furnace body, a heating element, a thermocouple, a cooling water furnace door, temperature control equipment and other constituents) and a quartz sealed crucible. By the design of the external heating furnace and the quartz crucible, the limitation to a sample amount in a test process of a volatile and corrosive fused salt sample is eliminated, and the measurement temperature range is expanded to environmental temperature of -1,873.5K; and furthermore, the external heating furnace is matched with the Raman long-corner objective lens, and damage to a Raman optical instrument due to high temperature and the volatile and corrosive fused salt in a high temperature in-situ test can be avoided. The method disclosed by the invention is simple; the external heating furnace which serves as required equipment is lower in cost than a microscopic heating table matched with the Raman spectrometer, and the method is more suitable for high temperature in-situ Raman measurement for the volatile and corrosive fused salt.

Description

technical field [0001] The invention belongs to the field of Raman spectrum inspection, and relates to a spectroscopic measurement device for the theoretical basis research of industrial magnesium electrolyte molten salt system, in particular to a Raman spectroscopic in-situ measurement method for high-temperature volatile corrosive molten salts, specifically It is a method suitable for Raman spectroscopy measurement of high-temperature volatile corrosive molten salts combined with DXR micro-laser Raman spectroscopy and long-corner objective lenses. Background technique [0002] Magnesium products are widely used in the fields of national economy, environmental protection, functional materials and high technology, so their development and utilization have attracted widespread attention in the industry. On the other hand, my country is a country with many salt lakes, and the salt lake brine contains rich magnesium resources. The magnesium chloride in the old brine can be elec...

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Problems solved by technology

[0008] In summary, using traditional in-situ Raman testing equipment to test high-temperature corrosive molten salts is difficult and costly, but the effect is not ideal

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