Method for detecting use performance of refractory material

Abstract

The invention discloses a method for detecting the use performance of a refractory material, and the method can predict the use effect of the refractory material. The method comprises the steps of: detecting the ability of the refractory material resisting thermal stress, employing a temperature controllable electric resistance furnace, and reserving grooves for placing samples on the furnace doors; making the to-be-detected refractory material into samples and inlaying the samples into the grooves on the two metal furnace doors; raising two plugboards through an electric lifting device outside the furnace, and closing the front and back metal furnace doors; observing the sample surfaces by alternate cooling and heating, and performing detailed recording; detecting the heat conduction performance and sintering gradient of the refractory material, and inlaying the to-be-detected refractory material into the two metal furnace door grooves; starting an automatic temperature controller, and beginning heating, constant temperature and cooling; and cutting the samples open longitudinally, and utilizing an X-ray diffraction instrument and an electron microscope to determine the mineral composition and microstructure at different distances from a hot surface. The method provided by the invention has the advantages of simple operation and convenient maintenance, and is in favor of large scale popularization and application.

Description

technical field [0001] The invention relates to a method for detecting refractory materials. In particular, a testing method for the performance of refractory materials. Background technique [0002] The quality of refractories is an important factor determining the life of thermal kiln linings. It is of great significance to study the thermal stress and the damage to the structure of refractories caused by temperature differences during the use of refractories, which is of great significance for predicting and improving the use effect of refractories. . As we all know, materials expand or contract with the rise and fall of temperature. If the expansion or contraction is restricted and cannot develop freely, stress will be generated inside the material. This internal stress caused by thermal expansion or contraction of the material is called thermal stress. Thermal stress not only appears temperature gradient in homogeneous materials, but also the difference in thermal ex...

AI Technical Summary

Problems solved by technology

This research method has a long experimental cycle and a large difference between the results and the actual results. The conclusions drawn have limited effect on guiding research and development, production and use.

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