Method for treating coal gangue powder suspension with high solid content

• Main Authors: WANG SHI, DING WEIBO, CHENG LEI, FENG YUTANG, YAN LEI
• Format: Patent
• Language: Chinese; English
• Published: 07.04.2023
• Subjects: OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

The invention provides a method for treating a high-solid-content coal gangue powder suspension. The method comprises the following steps: firstly, respectively preparing an anionic polyacrylamide solution with the mass fraction of 0.1% and a polyaluminum chloride solution with the mass fraction of 1%; the anionic polyacrylamide solution and the polyaluminum chloride solution are jointly used for sedimentation of the coal gangue powder suspension. According to the present invention, the anionic polyacrylamide and the aluminum polychlorid are adopted to improve the settling speed of the high solid content coal gangue powder suspension, shorten the settling time, easily solve the problem of difficult sewage treatment caused by coal gangue powder filling, easily promote the harmless treatment of coal gangue, and improve the production efficiency and the economic benefits of enterprises. 本发明提出了一种处理高含固率煤矸石粉悬液的方法，首先分别配制质量分数为0.1%的阴离子聚丙烯酰胺溶液和质量分数为1%的聚合氯化铝溶液；将阴离子聚丙烯酰胺溶液和聚合氯化铝溶液联合用于煤矸石粉悬液沉降。本发明利用阴离子聚丙烯氨酰胺和聚合氯化铝提高了高含固率煤