铬精矿细粉添加量对铜冶炼炉用铝铬材料性能的影响

发布时间：2018-12-31 13:11

【摘要】：为了充分利用铝铬渣资源,并提高铜冶炼炉用铝铬材料的性能,以铝铬渣制备的铬刚玉、铬精矿细粉、部分稳定氧化锆微粉、Cr_2O_3粉和α-Al_2O_3微粉为主要原料,以磷酸二氢铝为结合剂,研究了铬精矿细粉添加量(加入质量分数分别为10%、15%、20%、25%和29%)对试样经1 600℃保温3 h烧后的显微结构、物相组成、常温性能及抗渣性能的影响。结果表明:随着铬精矿细粉加入量的增加,试样的致密度增大,常温力学性能呈现先增加后降低的趋势;铬精矿的加入增加了试样中的铬含量,从而提高了铝铬固溶体的含量,在炉衬和熔渣接触面上生成的高熔点铁铬尖晶石或铁铝尖晶石,黏附在炉衬上形成保护层,提高铬刚玉砖的抗渣性能。加入25%(w)铬精矿时,试样的综合性能最佳。
[Abstract]:In order to make full use of aluminum-chromium slag resources and improve the properties of aluminum-chromium material for copper smelting furnace, the main raw materials were chromium corundum, chromium concentrate powder, partially stabilized zirconia powder, Cr_2O_3 powder and 伪 Al_2O_3 powder. With aluminum dihydrogen phosphate as binder, the microstructure and phase composition of chromium concentrate fine powder (10 15 1520% 25% and 29% by mass fraction respectively) after 3 h heat preservation at 1 600 鈩，

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