本文選題：高純石墨 + 分步提純法��； 參考：《非金屬礦》2017年03期

【摘要】：用硫酸與氫氟酸分步對(duì)原料石墨進(jìn)行酸浸提純,分別研究了硫酸和氫氟酸的反應(yīng)溫度、用量、反應(yīng)時(shí)間對(duì)提純效果的影響。采用外加磁場的反應(yīng)器,大大縮短反應(yīng)時(shí)間,提高反應(yīng)效率。制取高純石墨的最佳條件為:硫酸反應(yīng)溫度為80℃,6 mol/L的硫酸用量90 m L,反應(yīng)時(shí)間為2 h;氫氟酸反應(yīng)溫度為50℃,質(zhì)量分?jǐn)?shù)20%的氫氟酸用量為80 m L,反應(yīng)時(shí)間為2 h。經(jīng)過硫酸-氫氟酸提純之后的石墨,固定碳質(zhì)量分?jǐn)?shù)從79.03%可提高到98.65%,此工藝能有效緩解我國高純石墨依靠進(jìn)口的局面,應(yīng)用前景廣闊。
[Abstract]:The acid leaching of raw graphite was carried out with sulfuric acid and hydrofluoric acid. The effects of reaction temperature, dosage and reaction time on the purification effect were studied. The reaction time was shortened and the reaction efficiency was improved by using the external magnetic field reactor. The optimum conditions for preparing high purity graphite are as follows: the sulfuric acid reaction temperature is 80 鈩，

本文編號(hào)：1977017