CAJ | 학술논문

褐煤与40%浓度的硝酸以10∶3的比例,在75℃氧化40 min,可以提高凝聚限度4.9%,但由此增加的生产成本较高,所以在工厂化生产腐植酸钾时不建议采用氧化降解腐植酸原料分子量;风化煤经硝酸氧化后凝聚限度提高不明显;工厂化生产抗硬水比较好的腐植酸钾应采用活性比较好的褐煤为原料,以凝聚限度和E4/E6值比较大的原料为首选.
갈매여40%농도적초산이10∶3적비례,재75℃양화40 min,가이제고응취한도4.9%,단유차증가적생산성본교고,소이재공엄화생산부식산갑시불건의채용양화강해부식산원료분자량;풍화매경초산양화후응취한도제고불명현;공엄화생산항경수비교호적부식산갑응채용활성비교호적갈매위원료,이응취한도화E4/E6치비교대적원료위수선.
Oxidizing lignite by 40%nitric acid at 75℃for 40 minutes with 10∶3 ratio could improve cohesion limits by 4.9%, but the cost of production is higher. Therefore, the technics of oxidative degradation of humic acid raw mate-rial was not recommended. In addition,nitric acid oxidation could not enhance the cohesion limits of weathered coal obviously. Factory production of potassium humate which had good performance of anti-hard water should used high-activity lignite as raw material, especially used lignite with higher cohesion limits and E4/E6 value.