A kind of preparation method of accelerator for gypsum board production
A technology of gypsum board and coagulant, which is applied in the field of gypsum board accessories, can solve the problem that coagulant cannot meet production needs and other problems, and achieves the effect of sufficient time and avoiding agglomeration
Active Publication Date: 2022-08-09
BEIJING NEW BUILDING MATERIALS PLC
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Problems solved by technology
[0005] The purpose of the present invention is to provide a preparation method of a coagulant for gypsum board production, so as to solve the technical problem that the coagulant for gypsum board in the prior art cannot meet the production demand
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[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0048] like figure 1 As shown, the present invention provides a preparation method of a coagulant for gypsum board production, comprising the following steps:
[0049] Step 100, pretreating the gypsum board sawing waste to screen out the discarded face covering paper and over-burned sawing waste in the gypsum board sawing waste to obtain dry gypsum board;
[0050] Step 200, grinding the dry gypsum board under preset conditions to ob...
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The invention discloses a preparation method of a coagulant for gypsum board production, which comprises the following steps: pretreating the gypsum board sawing waste to screen out the discarded face protection paper and the overburned sawing edge in the gypsum board sawing waste waste to obtain dry gypsum board; grind the dry gypsum board under preset conditions to obtain fine raw gypsum powder; evenly coat a layer of slow-release layer on the outside of the fine raw gypsum powder particles to obtain the modified raw gypsum fine powder; the present invention Using gypsum board sawing waste as the raw material for the preparation of coagulant, and removing the waste cover paper and end sawing waste that affect the effect of the coagulant, the ground raw gypsum powder can be used as a crystal nucleus to promote the growth of crystals in the length direction At the same time, a slow-release layer is evenly wrapped on the outside of the gypsum fine powder particles, which can avoid the agglomeration of the raw gypsum powder, and at the same time, during the hydration process, the coagulant can have slow-release properties, so that the gypsum slurry will not become watery at the initial stage. If it melts too fast, give sufficient time for stirring and forming.
Description
technical field [0001] The invention relates to the technical field of gypsum board accessories, in particular to a preparation method of a coagulant for gypsum board production. Background technique [0002] Paper-faced gypsum board is a lightweight building board made of gypsum as the base material, mixed with additives such as binder and foaming agent as the core material, and two layers of cardboard as the cover paper. Paper-faced gypsum board is generally produced by comprehensively using the desulfurization waste residue of thermal power plants - desulfurization gypsum as the main raw material. It belongs to the comprehensive utilization of resources, and has the advantages of energy saving, environmental protection, and convenient construction. [0003] The coagulant used in the production of gypsum board is generally prepared by grinding raw gypsum powder. The coagulant provides crystal nucleus for the hydration of plaster of paris, and promotes the growth of gypsum ...
Claims
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IPC IPC(8): C04B24/38C04B24/10C04B103/12
CPCC04B40/0046C04B2103/12C04B24/10C04B24/383C04B22/146Y02W30/91
Inventor 唐大勇蒋文杰王洋辛伟冯亮喻铁良汪朋白龙
Owner BEIJING NEW BUILDING MATERIALS PLC