[Soda ash knowledge] Daily question (118) 2010.1.29

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method.； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine. The soda ash consumption is high and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with Ca2+, Mg2+ and other substances, which affects the improvement of the carbonation conversion rate. ； Secondly, magnesium and calcium removal are carried out separately. The process is complicated, there are many equipments, and the loss of ammonia is large. ； The third is that the decalcification tower pipelines are severely scarred, have a short service life, and require a large amount of cleaning work.

The advantage is that it is suitable for refining crude brine containing magnesium and calcium impurities, and is more economical than the lime-soda ash method.； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine. The soda ash consumption is high and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with Ca2+, Mg2+ and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complex, there are many equipments, and the loss of ammonia is large. ； Second, the decalcification tower pipelines are severely scarred, have a short service life, and require a large amount of cleaning work.

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method.； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine, which consumes soda ash and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with calcium ions, magnesium ions and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complex, there are many equipments, and the loss of ammonia is large. ； The third is that the decalcification pipeline is severely scarred, has a short service life, and requires a large amount of cleaning work.

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method.； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine, which consumes soda ash and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with calcium ions, magnesium ions and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complex, there are many equipments, and the loss of ammonia is large. ； The third is that the decalcification pipeline is severely scarred, has a short service life, and requires a large amount of cleaning work.

1. What are the advantages and disadvantages of refining brine using the lime ammonium carbonate method? answer: The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method; when removing a lot of calcium impurities, the lime-soda ash method is used to refine the brine, which consumes high soda ash and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with Ca2+ Mg2+- and other substances, which affects the improvement of the carbonation conversion rate; secondly, magnesium and calcium removal are carried out separately, with complex processes, many equipments, and large ammonia losses; secondly, the decalcification tower pipelines are seriously scarred, the service life is short, and the cleaning workload is large.

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method.； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine, which consumes soda ash and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with calcium ions, magnesium ions and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complex, there are many equipments, and the loss of ammonia is large. ； The third is that the decalcification pipeline is severely scarred, has a short service life, and requires a large amount of cleaning work.

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method.； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine. The soda ash consumption is high and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with Ca2+, Mg2+ and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complicated, there are many equipments, and the loss of ammonia is large. ； Second, the decalcification tower pipelines are severely scarred, have a short service life, and require a large amount of cleaning work.

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method. When removing calcium, the lime-soda ash method is used to refine brine, but the soda ash consumption is high and is uneconomical. The disadvantage is that the secondary brine contains calcium, magnesium and other substances combined with ammonia, which affects the improvement of the carbonation conversion rate. Secondly, the magnesium and calcium removal are carried out separately. The process is complex, there are many equipments, and the ammonia loss is large. The 30th decalcification tower is severely scarred, has a short service life, and requires a large amount of cleaning work.

advantage: It is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method. ； When removing a lot of calcium and impurities, the lime-soda ash method is used to refine the brine, which consumes soda ash and is uneconomical. The disadvantage is that the secondary brine contains ammonia combined with Ca2+, Mg2+ and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complex, there are many equipments, and the loss of ammonia is large. ； The third is that the decalcification tower pipelines are severely scarred, have a short service life, and require a large amount of cleaning work.

The advantage is that it is suitable for refining crude brine containing high magnesium and calcium impurities, and is more economical than the lime-soda ash method.； The disadvantage is that the secondary brine contains ammonia combined with Mg 2+, Ca 2+ and other substances, which affects the improvement of the carbonation conversion rate. ； The second step is to remove magnesium and calcium separately. The process is complex, there are many equipments, and the loss of ammonia is large. ； The third is that the decalcification tower pipelines are severely scarred, have a short service life, and require a large amount of cleaning work.