一种无氨脱灰剂应用研究

doi:10.19677/j.issn.1004-7964.2021.04.010

Leather Science and Engineering ›› 2021, Vol. 31 ›› Issue (4): 50-54.doi: 10.19677/j.issn.1004-7964.2021.04.010

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The Application of Non-Ammonia Deliming Agent

WANG Zaixue^1,2, SONG Xiaoqun^3,*, WANG Zhaowei², XU Yanhong², ZANG Yanan², LONG Zhongzhen³, FENG Li¹

1. China University of Mining and Technology, College of Chemical Engineering, Xuzhou 221116, China;
2. Xuzhou College of Industrial Technology, Department of Material Engineering, Xuzhou 221140, China;
3. Xuzhou Hoffen Chemicals Co., LTD, Xuzhou 221200, China

Received:2021-02-02 Published:2021-08-28 Online:2021-08-02

Abstract

Abstract: The pH buffering performance, lime settling speed and deliming efficiency were investigated through titration, lime settling and cattle hide deliming experiments,by comparing citric acid, oxalic acid, lactic acid, boric acid and non-ammonia deliming agent C with ammonium sulfate. The results indicate that the buffer properties of organic acid and ammonium sulfate were obviously different. The combination speed of citric acid and oxalic acid with lime is faster, however non-ammonia deliming agent C has a pH buffer action extent and lime settling speed comparable to ammonium sulfate. The pH curves show that the deliming efficiency of boric acid and non ammonia deliming agent C is approximation to that of ammonium sulfate. Incision examinations turn out that the deliming penetration rate of deliming agent C was faster than boric acid, and slightly slower than ammonium sulfate.

Key words: leather manufacture, deliming, ammonia nitrogen, non-ammonia deliming agent, ammonia sulphate

CLC Number:

TS541

WANG Zaixue, SONG Xiaoqun, WANG Zhaowei, XU Yanhong, ZANG Yanan, LONG Zhongzhen, FENG Li. The Application of Non-Ammonia Deliming Agent[J]. Leather Science and Engineering, 2021, 31(4): 50-54.

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The Application of Non-Ammonia Deliming Agent

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