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Method for removing gypsum in electrolytic manganese residues
The invention discloses a method for removing gypsum in electrolytic manganese residues. The method comprises the following steps that firstly, electrolytic manganese residues just discharged from a filter pressing workshop are conveyed into a slurrying barrel, water, carbonate and ammonium salt are sequentially added according to a set proportion, meanwhile, an electric field is introduced, and then ammonia water and diluted hydrochloric acid are adopted for adjusting the pH of a leaching system; secondly, carrying out full stirring reaction under set conditions, and after the reaction is finished, carrying out solid-liquid separation on a backwash filter press; and finally, the leaching liquid obtained through filter pressing is subjected to circulating leaching utilization, the leaching liquid is subjected to evaporation concentration after being circulated for a certain number of times, the concentrated product can be subjected to resource utilization, and meanwhile the leaching residues obtained after rewashing can also be subjected to resource utilization. Compared with the prior art, the method has the advantages that the leaching rate of the gypsum in the electrolytic manganese residues can reach 90% or above, resource utilization of the leachate and the leaching residues can be achieved, and the method is simple and convenient in overall process operation and low in cost.
本发明公开了一种脱除电解锰渣中石膏的方法。其步骤如下：首先，将压滤车间刚排放的电解锰渣输送到化浆桶中，依次加入设定比例的水、碳酸盐和铵盐，同时引入电场，随后采用氨水和稀盐酸调节浸出体系pH；其次，在设定条件下进行充分搅拌反应，反应结束后，在返洗压滤机上进行固液分离；最后，将压滤得到的浸出液进行循环浸出利用，浸出液循环一定次数后再进行蒸发浓缩，浓缩产物可进行资源化利用，同时返洗后的浸出渣也可进行资源化利用。本发明方法与现有技术相比较，电解锰渣中石膏的浸出率可达到90%以上，浸出液可和浸出渣可实现资源化利用，本发明方法整体工艺操作简便，成本低。
Method for removing gypsum in electrolytic manganese residues
The invention discloses a method for removing gypsum in electrolytic manganese residues. The method comprises the following steps that firstly, electrolytic manganese residues just discharged from a filter pressing workshop are conveyed into a slurrying barrel, water, carbonate and ammonium salt are sequentially added according to a set proportion, meanwhile, an electric field is introduced, and then ammonia water and diluted hydrochloric acid are adopted for adjusting the pH of a leaching system; secondly, carrying out full stirring reaction under set conditions, and after the reaction is finished, carrying out solid-liquid separation on a backwash filter press; and finally, the leaching liquid obtained through filter pressing is subjected to circulating leaching utilization, the leaching liquid is subjected to evaporation concentration after being circulated for a certain number of times, the concentrated product can be subjected to resource utilization, and meanwhile the leaching residues obtained after rewashing can also be subjected to resource utilization. Compared with the prior art, the method has the advantages that the leaching rate of the gypsum in the electrolytic manganese residues can reach 90% or above, resource utilization of the leachate and the leaching residues can be achieved, and the method is simple and convenient in overall process operation and low in cost.
本发明公开了一种脱除电解锰渣中石膏的方法。其步骤如下：首先，将压滤车间刚排放的电解锰渣输送到化浆桶中，依次加入设定比例的水、碳酸盐和铵盐，同时引入电场，随后采用氨水和稀盐酸调节浸出体系pH；其次，在设定条件下进行充分搅拌反应，反应结束后，在返洗压滤机上进行固液分离；最后，将压滤得到的浸出液进行循环浸出利用，浸出液循环一定次数后再进行蒸发浓缩，浓缩产物可进行资源化利用，同时返洗后的浸出渣也可进行资源化利用。本发明方法与现有技术相比较，电解锰渣中石膏的浸出率可达到90%以上，浸出液可和浸出渣可实现资源化利用，本发明方法整体工艺操作简便，成本低。
Method for removing gypsum in electrolytic manganese residues
一种脱除电解锰渣中石膏的方法
SHU JIANCHENG (author) / LI ZIHAN (author) / CHEN MENGJUN (author) / DENG ZONGYU (author) / WANG XIAOQUAN (author) / ZENG YIFAN (author) / HUANG YIN (author) / YANG YONG (author)
2024-06-11
Patent
Electronic Resource
Chinese
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