对造纸废液中提取的磺化木质素进行改性，探索其作为缓蚀剂的可行性。
Lignosulfonate extracted from pulping waste liquor was modified to study the feasibility of its use as a corrosion inhibitor.
对造纸黑液及酸析木质素的磺化进行了研究，得出了黑液及酸析木质素磺化的工艺条件。
A study on the sulfonation condition of lignin and paper-making black liquor was made, and the conditions were determined.
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