Test system and method of high melting point phase saturation precipitation in high temperature melt

Abstract

The invention discloses a test system of high melting point phase saturation precipitation in a high temperature melt. The test system comprises a vertical tube furnace and a copper tube, wherein a sealed furnace cavity is inside the vertical tube furnace; a hollow cooling cavity is inside the wall of the vertical tube furnace for storing cooling water; a water inlet communicating with the coolingcavity is formed in the bottom of the vertical tube furnace for injecting the cooling water into the cooling cavity; a water outlet communicating with the cooling cavity is formed in the upper part of the vertical tube furnace for discharging the cooling water from the cooling cavity; a pair of silicon-molybdenum bars are arranged inside the furnace cavity, and corundum crucibles are placed at the bottom of the furnace cavity for holding the high-temperature melt; the copper tube is U-shaped and hung above the corundum crucibles; the two ends of the copper tube penetrate through the furnace cavity and are located outside a furnace cover; one end of the copper tube is the water inlet end and the other end is the water outlet end; and the furnace cavity is connected with a protective gas supply device through a gas supply tube. Meanwhile the invention further provides a test method. According to the test system and method of high melting point phase saturation precipitation in the hightemperature melt, a precipitation distribution law of titanium carbide can be observed by SEM, and the test system and method of high melting point phase saturation precipitation in the high temperature melt can be used for guide production.

Description

technical field [0001] The invention belongs to the technical field of high-melting-point phase analysis in high-temperature melts, and in particular relates to a high-melting-point phase saturation and precipitation testing system and method in high-temperature melts. Background technique [0002] The service life and safety of the blast furnace hearth are the main restrictive factors affecting the operation life of the blast furnace. [0003] In recent years, the application of technologies such as optimizing the blast furnace type, adopting copper staves, and soft water closed circulation cooling have greatly improved the life of the walls above the bosh. Corrosion makes the life of the hearth the limiting link of the longevity of the entire blast furnace. [0004] According to statistics, in the seven years from 2010 to 2017, more than a dozen blast furnace bottom burn-through accidents of varying degrees occurred in China, and many of them occurred in the early stage o...

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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the present invention provides a high-melting point phase saturation and precipitation test system and method in high-temperature melts to solve the problem that there is no testing system and method in the prior art to test the saturation of high-melting point phases in high-temperature melts. Solved technical problems

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