Method for producing high-strength environment-friendly whitewash gypsum by using desulfurization gypsum
A technology for desulfurization gypsum and plastering gypsum, which is applied in the production field of plastering gypsum, can solve the problems of affecting the health of operators, the production environment is hygienic, containing toxic and harmful chemical components, and it is difficult to meet the requirements of technical indicators, etc. The effect of reducing bleeding segregation and reducing strength loss rate
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Embodiment 1
[0025] Embodiment 1 A kind of method utilizing desulfurization gypsum to produce high-strength environment-friendly plaster plaster, comprises the following steps:
[0026] (1) Fry the desulfurized gypsum in the fluidized furnace (specification / model T300-2000×2500) of Jingtai Jinlong Building Materials Co., Ltd. at a temperature of 160-180°C for 80-90 minutes, and fry it into β-type hemihydrate gypsum. The main component is desulfurized building gypsum; the prepared desulfurized building gypsum is ground to a specific surface area of 2000-2100 cm 2 / g to obtain modified desulfurized building gypsum; the modified desulfurized building gypsum meets the technical index requirements specified in GB / T9776-2008 "Building Gypsum" in Building Gypsum S3.0GB / T9776-2008.
[0027] (2) Get 100kg of modified desulfurized building gypsum obtained in step (1), then add 0.5kg of retarder and 0.2kg of water retaining agent successively, and put it into a mixer (DSH of Wuxi Hengguang Powder E...
Embodiment 2
[0029] Embodiment 2 A kind of method utilizing desulfurization gypsum to produce high-strength environment-friendly plaster plaster, comprises the following steps:
[0030] (1) Put the desulfurized gypsum into the boiling furnace, and fry it at a temperature of 160-180°C for 80-90 minutes, and fry it into a desulfurized building gypsum with β-type hemihydrate gypsum as the main component; the prepared desulfurized building gypsum Grind by a pulverizer until the specific surface area is 2100-2300cm 2 / g to obtain modified desulfurized building gypsum; the modified desulfurized building gypsum meets the technical index requirements specified in GB / T9776-2008 "Building Gypsum" in Building Gypsum S3.0GB / T9776-2008.
[0031] (2) Take 100kg of the modified desulfurized building gypsum obtained in step (1), then add 0.6kg of retarder and 0.4kg of water-retaining agent in turn, put it into the mixer and stir for 10 minutes, press the 40kg / bag. Wherein the mass ratio of modified star...
Embodiment 3
[0033] Embodiment 3 A kind of method utilizing desulfurization gypsum to produce high-strength environment-friendly plastering gypsum, comprises the following steps:
[0034] (1) Put the desulfurized gypsum into the boiling furnace, and fry it at a temperature of 160-180°C for 80-90 minutes, and fry it into a desulfurized building gypsum with β-type hemihydrate gypsum as the main component; the prepared desulfurized building gypsum Grinding by a pulverizer until the specific surface area is 2300-2400cm 2 / g to obtain modified desulfurized building gypsum; the modified desulfurized building gypsum meets the technical index requirements specified in GB / T9776-2008 "Building Gypsum" in Building Gypsum S3.0GB / T9776-2008.
[0035] (2) Take 100kg of the modified desulfurized building gypsum obtained in step (1), then add 0.55kg of retarder and 0.3kg of water-retaining agent in turn, put it into the mixer and stir for 10 minutes, press the 40kg / bag. Wherein the mass ratio of modifie...
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