Baking soda crystal issue.
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Start a thread to discuss the carbonization and crystallization issues of various baking soda manufacturers that use soda ash as raw material. Including crystallization temperature and hot alkali solution concentration. There is a theory currently that the higher the concentration of hot alkaline solution, the more favorable it is for the growth of crystal particles, but there are those who disagree. We keep the crystallization temperature in the carbonization tower at around 85 degrees. Some say that the temperature in the carbonization tower has little impact on crystallization, but I personally think it should be above 90 degrees. I’m not sure if that’s correct The concentration of the hot alkaline solution should be kept above 90 tt; some say it is better to keep it below 85 tt to facilitate crystallization.
The last paragraph on page 385 of the second edition of \"Soda Ash Engineering\": NA2CO3 at 65–75 tt, NAHCO3 at 15–25 tt; page 386 states that the nucleation temperature is 85
Could it be that the CO2 distribution, concentration, and supersaturation levels are not well controlled?