Abstract
A new type of slagging test menthod for basic refractories, Slagging-under-Load Test, was proposed.The test is a kind of hot creep test with slagging. The procedure of this test is as follows.A columnar crucible made of specimen with the size of 50mm in diameter and 50mm in height and with the hole size of 20mm in diameter and 30mm in depth, is filled with slag powder.The slag-filled specimen is heated at a uniform rate up to a test temperature, at which the specimen is maintained and a compressive load is applied. The rate of subsidence of specimen is measured in the similar manner to refractoriness-under-load test.This test is based on the fact that the slagging resistance of basic refractories must be determined both by the tendency of slag penetration and by the change in refractoriness with slag absorption. Some examples of the test applied to the evaluation of basic bricks for oxygen converter and mixer lining were given.
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