本文選題：腐植酸鉀 + 褐煤�。� 參考：《應(yīng)用化工》2017年09期

【摘要】：以內(nèi)蒙古赤峰某地褐煤為原料,分別采用氫氧化鉀溶液、氫氧化鉀與碳酸鉀混合溶液兩種提取液,進行了制備腐植酸鉀的條件實驗和正交實驗,探究提取劑用量、固液比、熱處理時間對腐植酸提取率的影響。結(jié)果表明,制備腐植酸鉀的優(yōu)化工藝條件為:在90℃下水浴1 h,固液質(zhì)量比1∶10,氫氧化鉀與碳酸鉀混合液濃度1.0%+0.5%。在此優(yōu)化條件下,腐植酸鉀提取率87.2%。水溶性腐植酸含量52.5%,氧化鉀含量22.6%,水不溶物含量9.5%,p H值11.0,水分含量約1.5%。
[Abstract]:Using lignite in Chifeng, Inner Mongolia as raw material, two kinds of extraction solutions, potassium hydroxide solution and mixed solution of potassium hydroxide and potassium carbonate, were used to prepare potassium humate. Effect of heat treatment time on the extraction rate of humic acid. The results showed that the optimum conditions for preparing potassium humate were as follows: water bath at 90 鈩，

本文編號：1776729