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English Translations » 氯碱技术圈 » [Soda ash knowledge] Daily question (16) 2009.10.19

[Soda ash knowledge] Daily question (16) 2009.10.19

2009-10-18View Original

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Please hide the reply. If you do not hide it, you will not be graded in principle. Specific hiding methods: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Edited posts are not graded. (The title of this issue is taken from page 63 of "Technical Workers Job Training Question Bank - Soda Ash Production Operator". The electronic version of the book is available for download in the soda ash information sharing area. http://bbs.hcbbs.com/thread-13140-1-2.html ) True or False Question 1. In order to obtain large particle crystals, the supersaturation should be controlled in the "unstable zone". ( ) 2. MI absorbs ammonia to make it easier for ammonium chloride to precipitate in the crystallizer. ( ) 3. Below 16 degrees, the solubility of ammonium chloride is greater than that of sodium chloride. ( ) 4. After AI is cooled down, ammonium chloride can crystallize out separately. ( ) 5. Half MII is saturated with both ammonium chloride and sodium chloride. ( )
Reply #22009-10-18
1. In order to obtain large particle crystals, the supersaturation should be controlled in the "unstable zone". (F) 2. MI absorbs ammonia to make it easier for ammonium chloride to precipitate in the crystallizer. (F) 3. Below 16 degrees, the solubility of ammonium chloride is greater than that of sodium chloride. (F) 4. After AI is cooled down, ammonium chloride can crystallize out separately. (T) 5. Half MII is saturated with both ammonium chloride and sodium chloride. (F)
Reply #32009-10-19
1. False 2. False 3. False 9 True 10 False
Reply #42009-10-19
1. In order to obtain large particle crystals, the supersaturation should be controlled in the "unstable zone". (Wrong) 2. MI absorbs ammonia so that ammonium chloride can precipitate more easily in the crystallizer. (False) 3. Below 16 degrees, the solubility of ammonium chloride is greater than that of sodium chloride. (Wrong) 4. After AI is cooled down, ammonium chloride can crystallize out separately. (True) 5. Half MII is saturated with both ammonium chloride and sodium chloride. (wrong)
Reply #52009-10-19
1. False 2. False 3. False 4. True 5. False
Reply #62009-10-19
It’s less than sixteen characters again, so talk more nonsense. 1. False 2. False 3. False 4. True 5. False

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Translated at 2026-07-23 12:33:13

Original: https://bbs.hcbbs.com/thread-557632-1-1.html

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