The amount of ferric chloride added to the imported brine in the preprocessor
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This post was last edited by sunjl1981 on 2013-1-7 00:12 How to determine the amount of ferric chloride added to imported brine in the preprocessor? What is the magnesium content at the outlet of the preconditioner when the brine is clear? # hcbbs
The amount of ferric chloride should be added according to the color of the floating mud. When the brine is clear, the magnesium content at the outlet of the preprocessor is generally less than 50mg/l. This post was last edited by yzhms on 2009-4-14 11:56 ]
To supplement the post by leeukung on the second floor, the amount of ferric chloride should be added according to the color of the floating mud. Light yellow is suitable. This post was last edited by limingshuguang on 2009-4-17 22:21 ]
Generally add 1 per cubic meter of salt water. 5~2L shall prevail. Of course, the lower the magnesium content at the outlet of the preprocessor, the better, because the preprocessor mainly removes magnesium, and the filter mainly removes calcium. Otherwise it will be difficult to remove magnesium in the later stages. This post was last edited by LMT168 on 2009-4-14 14:22 ]
The amount of ferric chloride should be controlled at 10--20 PPM/L of salt water. If the export salt water is clear water, the magnesium content should not be higher than 20 mg/L.
Is it too alkaline and not very dark in color?
If the amount of over-alkali is not high, you must not add too much FeCL3, otherwise the salt water will become acidic.
The refined salt we use has basically no floating mud. The ferric chloride has been prepared, but I have never added it. Personally, the refined salt itself has a high iron content and few impurities. There is no need to add refined salt water to measure calcium and magnesium. The calcium and magnesium are always trace amounts and cannot be measured.
Let me digress. Are you interested in changing the process and using complex iron salts as the flocculant? The effect will be better and the cost will be lower. Please consider it.
What is the compound iron salt and does the manufacturer have any successful experience in using it?
I feel that there are still certain requirements for the amount of over-alkali. Iron hydroxide is originally brick red and very dark in color. (Please tell me if there is anything wrong! )
An experienced operator should look at the color! Because color is the most intuitive!
Ferric chloride is added to act as a flocculating agent to precipitate magnesium hydroxide. So does the amount of addition have a certain relationship with the amount of magnesium ions contained in the salt (or the amount of magnesium hydroxide produced)? As for the relationship, I haven't fully figured out yet. Anyone who has done this can tell me about your experience? The forum mentioned the addition amount of 3L/cubic salt water. I checked the material balance of Kaimu and found that this relationship is not completely established. Of course, the color can be used to judge the operation. I think it might be better if a certain relationship can be given in the calculation. Because there is a regulating valve on the ferric chloride addition pipeline, the quantity design adjustment will be more accurate after knowing the relationship. Hope to communicate with you all!