Organic matter removing method and aluminum oxide producing method

The invention relates to the field of aluminum oxide producing, in particular to an organic matter removing method and an aluminum oxide producing method. The organic matter removing method includes the following step of sintering causticized slag containing calcium oxalate, monohydrallite and limestone, wherein the causticized slag accounts for 10-20% of the total weight of a mixture of causticized slag, monohydrallite and limestone. The causticizing cost is low, the resourceful value-added utilization of the causticized slag is realized, the dissolution resistance problem of the causticizedslag is solved, and the potential safety hazard of environment pollution of the causticized slag is solved. 本发明涉及氧化铝生产领域，具体涉及种有机物脱除方法和生产氧化铝的方法。本发明提出种有机物脱除方法，包括以下步骤：将含有草酸钙的苛化渣与铝土矿和石灰石进行烧结，苛化渣占苛化渣、铝土矿和石灰石的混合配料的总质量的10-20％。其苛化成本低，实现苛化渣的资源化增值利用，同时解决苛化渣的反溶问题，且解决苛化渣污染环境的安全隐患。