Organic substances are used in refractory bricks manufacture as binders. In this work, two commercial binder systems currently employed in MgO-C bricks for steelmaking industry were first analyzed separately from the other components of the refractory. A resol phenolic resin alone and mixed with an ecobinder produced by treatment of tar pitch were studied by several techniques (XRD, FTIR, Raman spectroscopy, DTA/TGA and measurements of density, porosity, and mechanical and oxidation resistances) in their as-received condition, as well as after thermal treatments in conditions near to those used in the manufacture of the bricks (temperatures lower than 300 °C) and also during their service (in the range 600 °C to 1400 °C). The comparative analysis of the obtained results indicates that the ecobinder has domains of ordered carbon in its original condition, although the resin forms a stronger three-dimensional structure after treatments at low temperature (< 300 °C). When both binders are mixed and temperature rises from 600 °C onwards, experimental data show that they evolve with no or little interaction; the produced carbon has more and larger crystalline regions when the ecobinder is present. Finally, the effect of the binders’ characteristics on some properties of MgO-C bricks which have them incorporated were briefly analyzed.

有机物质在耐火砖的制造中用作粘合剂。在这项工作中，首先与耐火材料的其他成分分开分析了目前在炼钢行业用MgO-C砖中使用的两种商业粘合剂体系。通过几种技术（XRD，FTIR，拉曼光谱，DTA / TGA以及密度，孔隙率，机械和抗氧化性的测量）研究了单独的酚醛酚醛树脂以及与通过沥青焦油处理产生的生态粘合剂混合的方法。以及在砖制造过程中所使用的条件（温度低于300°C）附近以及在其使用过程中（在600°C至1400°C范围内）进行热处理之后。对所得结果的比较分析表明，尽管在低温（<300°C）处理后树脂形成了更坚固的三维结构，但该生态粘合剂在其原始状态下具有有序碳域。实验数据表明，当两种粘合剂混合并且温度从600°C开始升高时，它们之间没有相互作用或几乎没有相互作用。当存在生态粘合剂时，产生的碳具有更多且更大的结晶区域。最后，简要分析了粘结剂特性对掺入它们的MgO-C砖某些性能的影响。实验数据表明，它们在没有相互作用或几乎没有相互作用的情况下进化。当存在生态粘合剂时，产生的碳具有更多且更大的结晶区域。最后，简要分析了粘结剂特性对掺入它们的MgO-C砖某些性能的影响。实验数据表明，它们在没有相互作用或几乎没有相互作用的情况下进化。当存在生态粘合剂时，产生的碳具有更多且更大的结晶区域。最后，简要分析了粘结剂特性对掺入它们的MgO-C砖某些性能的影响。