期刊论文

Effect of coal ash slagging on Al2O3 -Cr2O3 -ZrO2 refractories in different atmospheres

Chen, D.

中文

耐火材料

1001-1935

2008

42

5

368-371

10.3969/j.issn.1001-1935.2008.05.013

国家自然科学基金资助项目（50576005）； 湖南省教育厅重点基金项目（05A016）；

本校为第一且通讯机构

以白刚玉、℃-Al2O3粉、锆英石和氧化铬为主要原料,在200 MPa油压机上压制成50 mm×50 mm×5 mm的试样,在空气气氛中于1 500 ℃煅烧5 h,制得Al2O3-Cr2O3-ZrO2试样.将0.6 g变形温度约为1 120℃的云贵煤灰平铺在Al2O3-Cr2O3-ZrO2试样上,然后放入马弗炉中分别在空气和弱还原性气氛下于1 250℃煅烧5 h,随炉冷却后观察煤灰在Al2O3-Cr2O3-ZrO2试样上的结渣情况,并进行SEM及EDS分析.结果表明:在弱还原气氛条件下,煤灰在Al2O3-Cr2O3-ZrO2上的结渣非常致密;而在空气气氛条件下,煤灰与Al2O3-Cr2O3-ZrO2材料间的粘接比较疏松,两者间没有明显的相互渗透.

With the starting materials of white corundum, α-Al2O 3 powder, zircon and chrome oxide, Al2O 3-Cr2O3-ZrO2 specimens with dimensions of 50 mm ×50 mm Times; 5 mm were pressed under 200 MPa in an oil press and fired at 1 500 °C for 5 h. Yungui coal ash (0.6 g, deformation emperature ≈1 120 °C) was spread on the Al2O 3-Cr2O3-ZrO2 specimens and fired at 1 250 °C for 5 h in air and weak reducing atmosphere, re-spective.y. The slag-bonding state of the specimen was observed ahd ahalyzed by SEM ahd EDS after haturally coolihg. The results showed...