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What are the specific methods for reducing magnesium levels using saline?

2009-03-25View Original

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This post was last edited by sunjl1981 on 2013-1-6 at 19:59. What are the specific methods for reducing magnesium levels in single-salt water? What should be the appropriate level for the specific indicators? # , , &
Reply #22009-03-25
The preferred approach is to use qualified raw materials; furthermore, the alkalinity should be kept between 0.2–0.4 g/l, which is sufficient to ensure effective treatment. At the same time, the ratio of calcium to magnesium should also be considered to ensure the effectiveness of the treatment.
Reply #32009-03-26
It’s best to control the amount of raw salt in order to reduce costs, as mentioned on the second floor. However, the concentration of alkali in my factory is 0.1–0.3 g/l. This post was last edited by haining on 2009-3-26 at 09:23.]
Reply #42009-03-26
As mentioned on the second floor, it is important to control the amount of excess alkali in the raw material NaOH; this amount should generally be kept between 0.1 and 0.3 g/l, but adjustments should be made based on actual conditions. This post was last edited by yzhms on 2009-3-26 11:50]
Reply #52009-03-26
The priority should be to use qualified raw materials. Additionally, to control the excess alkalinity, it should be kept between 0.1 and 0.3 g/l, although adjustments should be made based on actual conditions. The structure of the saltwater tank should be reasonable. Time of stay in the device. Strictly control the resin column exchange time.
Reply #62009-03-26
Specific methods for reducing magnesium levels in brine: 1. Use qualified raw salt. 2. Control the amount of alkali used appropriately. 3. Regulate the temperature of the brine. 4. Control the pressure applied. 5. Manage the amount of flocculant added. 6. Control the reaction time. 7. Regulate the ratio of calcium to magnesium. 8. Maintain an appropriate flow rate of brine. 9. Keep a reasonable amount of sludge removal and the appropriate time intervals between such operations. Last edited by limingshuguang on 2009-3-26 at 11:50
Reply #72009-03-26
Our optimal control index is 0.2–0.3 g/l.
Reply #82009-03-26
1. The calcium-to-magnesium ratio in crude salt is very important; if this ratio is greater than 2, the sedimentation method can be used, while if it is less than 1, the flotation method is preferable. 2. The air pressure used in the flotation method should ideally be 0. 2~0. Between 3 MPa. 3. The flocculant should be effective, and its amount should be moderate. 4. The reaction time should be more than half an hour. 5. The reaction temperature should be between 50 and 60 degrees. 6. Sludge should be removed on schedule to prevent excessive accumulation. 7. Maintain an adequate amount of excess alkali at 0. 1~0. 2GPL
Reply #92009-03-26
The pH of saltwater ranges from 10 to 13; pay attention to the rate at which calcium and magnesium precipitate, and add an appropriate amount of flocculant depending on the turbidity of the saltwater
Reply #102009-03-26
The people upstairs are discussing different manufacturing processes; please share your own process first, as different processes require different control methods. Traditional processes and membrane processes differ in terms of process control, as well as in their requirements for raw materials. Could you explain in detail so that it’s easier for everyone to learn and communicate? We use the traditional Dow settler combined with a siphon filter for this process. Let me explain: 1. This process has high requirements for the raw salt; the calcium-to-magnesium ratio needs to be greater than 1, with a ratio of two to one being ideal, as such salt settles more easily during purification. It is beneficial for magnesium removal, but on the other hand, it is difficult to control. 2. It is necessary to ensure that there is sufficient reaction time, about 30 minutes, after the alkali has been added before the mixture enters the clarification tank. To ensure the reaction proceeds completely. 3. Control the amount of excess alkali reasonably, keeping it within the range of 0.1–0.3; this ensures the quality of the brine while avoiding waste of alkali from the raw materials. 4. Control the temperature of the brine at 60 degrees plus or minus 5 degrees. 5. Select an appropriate flocculant and control its dosage carefully; too much or too little of it is not conducive to sedimentation. 6. Maintain a reasonable amount of sludge discharge and interval; continuous discharge is preferred. If control is difficult, intermittent discharge is also acceptable, but it is better to discharge small amounts frequently. 7. The flow rate of saltwater must be stable, with minimal fluctuations; otherwise, it is difficult to control. 8. Ensure that the temperature difference between the inlet and outlet of the clarification tank is less than 3 degrees. 9. Ensure the proper operation of the filter, and maintain the appropriate height of the filter medium as well as the particle size of the quartz sand.
Reply #112009-03-27
Raw salt is the most crucial. Another thing is to prevent the inversion of calcium and magnesium levels.
Reply #122009-03-27
1. I agree with everyone’s opinion – it is very important to control the quality of raw salt. When the calcium and magnesium content in the raw salt is low, it becomes possible to reduce the amount of refining agents used, thereby cutting costs. We have experienced this firsthand; the magnesium-removal tanks have not been in use for over a year now. 2. It is necessary to maintain an appropriate level of alkalinity in the brine, so that the reaction can proceed properly. 3. The absence of coagulation factors, also known as coagulation nuclei; by adding some salt sludge, it is possible to increase the transparency of the crude brine, as well as to facilitate sedimentation and reduce the levels of calcium and magnesium. 4. Maintain a temperature of 50~60 degrees Celsius. 5. Regularly remove sludge
Reply #132009-03-28
Our company specializes in the Kai membrane process, a method for reducing magnesium levels in brine; we focus on ensuring high quality of the raw salt, maintaining an alkalinity level in the brine of 0.1–0.3 g/l; Additionally, control the temperature of the saline solution, regulate the pressure in the pressurized aeration tank, manage the amount of flocculant added, control the reaction time, and maintain an appropriate amount of sludge removal along with the appropriate time intervals.
Reply #142009-03-29
There are various factors at play; the key is to conduct a thorough analysis and develop appropriate countermeasures.

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