通常由拜尔溶液中分离草酸钠和其它盐，可制得草酸盐／芒硝。这种制芒硝的工艺路线为铝矾土煅烧，生成铝酸钠，除去有机物和碳酸盐。荷兰阿纳姆市的比利顿研究所研究了在900～1300℃温度区间煅烧草酸钠／铝矾土的混合物，生成铝酸钠的过程情况。实验结果表明，在900℃温度下煅 The oxalate / Glauber salt is usually obtained by separating sodium oxalate and other salts from Bayer’s solution. This Glauber’s process route is bauxite calcined to produce sodium aluminate, which removes organic matter and carbonates. The Belgian Institute of Arnhem, The Netherlands, studied the process of calcining a mixture of sodium oxalate / bauxite at a temperature in the range of 900 to 1300 ° C to produce sodium aluminate. Experimental results show that calcined at 900 ℃ temperature