A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a production method of a gypsum board in a plateau environment and a gypsum plaster board, and the production method comprises the following steps: step S10, stirring and mixing raw materials to obtain gypsum slurry, pouring the obtained gypsum slurry between two layers of surface protection paper, and cutting off after forming to obtain a plurality of gypsum slurry blocks; s20, the gypsum slurry blocks are dried for 10-20 minutes in a first drying area, and the temperature of an outlet of the first drying area is 123-130 DEG C; and S30, the gypsum slurry blocks out of the first drying area enter a second drying area to be dried for 25-35 minutes, the temperature of an outlet of the second drying area is 96-103 DEG C, and gypsum boards out of the second drying area are produced after being subjected to edge cutting and edge covering. By adding the starch with the lower gelatinization temperature into the gypsum slurry, the starch migration rate of the gypsum slurry block in the drying process can be effectively improved, meanwhile, the evaporation rate of moisture on the surface of the gypsum slurry block can be reduced in cooperation with adjustment of the drying temperature, the bonding strength between the dried covering paper and the gypsum block is guaranteed, and the rejection rate is reduced; and the rejection rate of the produced gypsum board can be reduced to 2%.
本申请公开了一种高原环境下石膏板生产方法、纸面石膏板，包括以下步骤：步骤S10：搅拌混合原料得到石膏浆料，将所得石膏浆料灌注入两层护面纸之间，成形后切断得到多个石膏浆块；步骤S20：石膏浆块在干燥一区中干燥10～20分钟，干燥一区的出口温度为123～130℃；步骤S30：出干燥一区的石膏浆块进入干燥二区中干燥25～35分钟，干燥二区的出口温度为96～103℃，出干燥二区的石膏板经过切边，包边后出产。通过在石膏浆料中添加上述糊化温度较低的淀粉，能有效提高石膏浆料块在烘干过程中的淀粉迁移速率，同时配合烘干温度的调整，能减少石膏浆料块表面水分的蒸发速率，保证烘干后护面纸与石膏块间的粘结强度，减少废品率，生产后石膏板的废品率可降低至2％。
The invention discloses a production method of a gypsum board in a plateau environment and a gypsum plaster board, and the production method comprises the following steps: step S10, stirring and mixing raw materials to obtain gypsum slurry, pouring the obtained gypsum slurry between two layers of surface protection paper, and cutting off after forming to obtain a plurality of gypsum slurry blocks; s20, the gypsum slurry blocks are dried for 10-20 minutes in a first drying area, and the temperature of an outlet of the first drying area is 123-130 DEG C; and S30, the gypsum slurry blocks out of the first drying area enter a second drying area to be dried for 25-35 minutes, the temperature of an outlet of the second drying area is 96-103 DEG C, and gypsum boards out of the second drying area are produced after being subjected to edge cutting and edge covering. By adding the starch with the lower gelatinization temperature into the gypsum slurry, the starch migration rate of the gypsum slurry block in the drying process can be effectively improved, meanwhile, the evaporation rate of moisture on the surface of the gypsum slurry block can be reduced in cooperation with adjustment of the drying temperature, the bonding strength between the dried covering paper and the gypsum block is guaranteed, and the rejection rate is reduced; and the rejection rate of the produced gypsum board can be reduced to 2%.
本申请公开了一种高原环境下石膏板生产方法、纸面石膏板，包括以下步骤：步骤S10：搅拌混合原料得到石膏浆料，将所得石膏浆料灌注入两层护面纸之间，成形后切断得到多个石膏浆块；步骤S20：石膏浆块在干燥一区中干燥10～20分钟，干燥一区的出口温度为123～130℃；步骤S30：出干燥一区的石膏浆块进入干燥二区中干燥25～35分钟，干燥二区的出口温度为96～103℃，出干燥二区的石膏板经过切边，包边后出产。通过在石膏浆料中添加上述糊化温度较低的淀粉，能有效提高石膏浆料块在烘干过程中的淀粉迁移速率，同时配合烘干温度的调整，能减少石膏浆料块表面水分的蒸发速率，保证烘干后护面纸与石膏块间的粘结强度，减少废品率，生产后石膏板的废品率可降低至2％。
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