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| Production Practice and Technical Improvement of Using Carbide Slag Instead of Lime for Causticization |
| Received:August 21, 2024 |
| DOI：10.11980/j.issn.0254-508X.2025.01.024 |
| Key Words:carbide slag causticization alkali recovery instead of lime |
| Author Name | Affiliation | Postcode | | MIAO Lin* | Yibin Paper Industry Co．,Ltd．,Yibin,Sichuan Province,644100 | 644100 | | HU Kangle | Xinjiang Xingwei Biotechnology Co., Ltd., Korla, Xinjiang Uygur Autonomous Region, 841009 | 841009 | | XU Jifei | Xinjiang Xingwei Biotechnology Co., Ltd., Korla, Xinjiang Uygur Autonomous Region, 841009 | 841009 | | YANG Xiaoli | Xinjiang Markor Chem Co., Ltd., Korla, Xinjiang Uygur Autonomous Region, 841009 | 841009 | | LI Hongju | Xinjiang Tianpu Zhicheng Testing Co., Ltd., Korla, Xinjiang Uygur Autonomous Region, 841002 | 841002 |
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| Abstract:The use of carbide slag as a substitute for lime in the green liquor causticization process was studied and subsequently carried out in a pilot production trial. Specific solutions were proposed for the problems， such as the unstable proportion of carbide slag， the decrease in the temperature of digested emulsion， the increase in excess lime， and the difficulty in dewatering of white mud that were encountered during the pilot process. With a carbide slag substitution rate of 20% （calculated as effective CaO）， the existing production system was not affected. |
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