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A review on graphite surface modification methods towards low carbon-containing refractories

Journal of Iron and Steel Research International 2024年第6期31卷 1291-1303页

作者： Ting-ting Zhang Jun Ding Bei-yue Ma Zheng-long Liu Chao Yu Cheng-ji Deng The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina

The rapid development of iron and steel metallurgy technology has promoted the continuous innovation and iteration of carbon-containing refractories for clean steel *** meet the high-quality requirements for clean steel production and full exploit the performance advantages of carbon-containing refractories in dynamic smelting environment,it is necessary to explore the role of graphite and modified graphite in carbon-containing *** on this,graphite surface modification methods,including surfactants,surface oxidation,and surface coating,and their applications in carbon-containing refractories are *** advantages and disadvantages of each method are analyzed for practical ***,combined with the existing problems,the application prospect of improved graphite in carbon-containing refractories is discussed.

关键词： Graphite carbon-containing refractory Clean steel Surface modification Service performance

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AI_4C_3 Hydration Thermochemical Analysis for Burned carbon-containing Refractories with Al

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China's Refractories 2003年第1期12卷 19-22页

作者： YANG Ding’ao, YU Zhiming and FAN Liuwu( Sanmenxia Polytechnic College, Sanmenxia, Henan 472000, China )

In this paper, X-ray diffractogram analysis and SEM observation of Al$ C$ formed at high temperature from carbon-containing refractories ivith Al have been carried out. Aluminum added to carbon-containing refractories reacts with C（s） to form Al^ C^（s） gradually during heating from 600 ’C to 1200^0 . It is considered that the interlocked structure of Al^ C-$ plate crystals promotes the outstanding increase of hot modulus of rupture of carbon-containing refractories with Al. The HMOR of carbon-containing refractories added with Al additive from 0 to 5wt% increases by 2.8 times being from 6.5MPa to 18.2MPa. After a thermochemical calculation for hydration reaction processes ofAl^C^ and H^O （g）, the equilibrium partial pressure chart ofH^O （g） in H^O-A^C^-Al^ OH)} system vs various temperatures has been attained . The H2 0 （g） partial pressure in the air needed for the Al^ C3 hydration reaction is no more than 10;18 atm at the temperature below 120t . It is considered that the burned carbon-containing re

关键词： Aluminium carbide Hydration Thermo-chemical analysis carbon-containing refractory Aluminium

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