Study on the Preparation of Ammonium Humate from Xinjiang Weathered Coal with Combined Activation of Ammonium Bicarbonate and Ammonia Water
In order to explore the process characteristics of preparing ammonium humate using ammonium bicarbonate and ammonia water,in this study,weathered coal with low free humic acid content from Xinjiang was used as raw material,ammonia water and ammonium bicarbonate as activators,and the optimal activation process was determined by single factor experiments and orthogonal experiments.The results showed that the activation rate was highest at an activation temperature of 80℃,an ammonia dosage of 20%,a carbonization degree of 60%,and a water coal ratio of 2(g/g).The content of water-soluble humic acid in ammonium humate was 17.62%.
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