CAJ | 학술논문

在热力学分析的基础上，分析了钾、钠、氯元素在热风炉耐火材料中的分布，研究了引起耐火材料软化收缩的原因，并提出了预防耐火材料软化破损的措施。研究结果表明，渗入到耐火材料中的钾、钠与Al2O3、SiO2等物质反应生成低熔点化合物，HCl和Al2O3反应生成气态氯化物，这是引起热风炉耐火材料软化收缩的主要原因。耐火材料表面处理、烧结矿使用低氯添加剂、及时更换破损布袋是防止热风炉耐火材料软化的主要措施。
재열역학분석적기출상，분석료갑、납、록원소재열풍로내화재료중적분포，연구료인기내화재료연화수축적원인，병제출료예방내화재료연화파손적조시。연구결과표명，삼입도내화재료중적갑、납여Al2O3、SiO2등물질반응생성저용점화합물，HCl화Al2O3반응생성기태록화물，저시인기열풍로내화재료연화수축적주요원인。내화재료표면처리、소결광사용저록첨가제、급시경환파손포대시방지열풍로내화재료연화적주요조시。
Based on thermodynamic analysis,the distribution of K,Na and Cl in hot blast stove refractory material were analyzed. Causes of softening contraction of refractory material were studied and measures to avoid softening breakage were put forward. The results show that after seeping into the refractory materials,K and Na react with Al2O3 and SiO2 generating low melting point compound and HCl reacts with Al2O3 to generate gaseous chloride,which is the main cause of refractory materials softening contraction. Refractory materials surface treatment,using low chloride additives in sinter and changing broken bag in time are the main measures to prevent refractory materials from softening.