Effects of Adding Content of Carborundum on Properties of Silicon of Carbon Furnace
In view of the present situation that the properties of silica brick for carbon furnace are getting higher and higher,the silica brick samples are prepared at the temperature of 1 450 ℃ by using high quality silica as raw material,adding different content of silicon carbide powder to press and shape,the effect of silicon carbide powder with different content on the properties of silicon brick was studied.The results show that some properties of silicon brick can be improved by increasing the content of silicon carbide powder in a certain range.When the content of silicon carbide is 2％,the apparent porosity is 17.98％,the bulk density is 1.88 g/cm3,the compressive strength at room temperature and the load softening temperature are 73.6 MPa and 1 701℃ respectively.With the increase of silicon carbide content,the linear change rate after sintering is not much different.When its content is more than 2％,the black-heart phenomenon appears in the experiment.Therefore,the optimum addition amount of silicon carbide powder is 2％.
万方数据
维普
