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Preparation method of modified molasses waste liquid and cement grinding aid
The invention provides a preparation method of a modified molasses waste liquid. The preparation method comprises the following steps: A, regulating the PH of the molasses waste liquid to the range of 9-11 by use of a sodium hydroxide solution, and filtering under a normal pressure to obtain a molasses filtrate A; B, adding an acetic acid solution to the molasses filtrate A until the PH is within the range of 2-3, thereby obtaining a molasses waste liquid B; C, thoroughly oxidizing the molasses waste liquid B by using 35% hydrogen peroxide, potassium permanganate or ozone, thereby obtaining a molasses waste liquid C; D, regulating the PH of the molasses waste liquid C to the range of 9-11 by use of the sodium hydroxide solution, thereby obtaining the modified molasses waste liquid. The invention also provides a cement grinding aid which is prepared by mixing the following raw materials in parts by weight with water: 2-5 parts of triethanolamine, 18-25 parts of diethanol monoisopropanolamine, 3-5 parts of industrial salt and 20-30 parts of modified molasses waste liquid. The modified molasses waste liquid has the characteristics of low production cost, and good grinding assisting and hydration assisting effects on the cement.
Preparation method of modified molasses waste liquid and cement grinding aid
The invention provides a preparation method of a modified molasses waste liquid. The preparation method comprises the following steps: A, regulating the PH of the molasses waste liquid to the range of 9-11 by use of a sodium hydroxide solution, and filtering under a normal pressure to obtain a molasses filtrate A; B, adding an acetic acid solution to the molasses filtrate A until the PH is within the range of 2-3, thereby obtaining a molasses waste liquid B; C, thoroughly oxidizing the molasses waste liquid B by using 35% hydrogen peroxide, potassium permanganate or ozone, thereby obtaining a molasses waste liquid C; D, regulating the PH of the molasses waste liquid C to the range of 9-11 by use of the sodium hydroxide solution, thereby obtaining the modified molasses waste liquid. The invention also provides a cement grinding aid which is prepared by mixing the following raw materials in parts by weight with water: 2-5 parts of triethanolamine, 18-25 parts of diethanol monoisopropanolamine, 3-5 parts of industrial salt and 20-30 parts of modified molasses waste liquid. The modified molasses waste liquid has the characteristics of low production cost, and good grinding assisting and hydration assisting effects on the cement.
Preparation method of modified molasses waste liquid and cement grinding aid
LIU WEI (author) / ZENG RONG (author) / LIANG SHIWEN (author) / TENG ZHUOGUANG (author) / JI YOUHONG (author) / ZHONG KEHUI (author) / PENG RONG (author) / YUE QIN (author) / WU DAN (author)
2015-05-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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