Production process of high-quality fibre cement product
A technology of fiber cement and production process, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of reducing structural strength, difficult quality control, uneven particle size of auxiliary materials, etc., and achieve the goal of increasing structural strength, improving appearance quality, and smooth surface Effect
Inactive Publication Date: 2003-04-23
JIAHUA SPECIAL CEMENT
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Problems solved by technology
In this process, since the ingredients used are mixed with cement, fiber and other auxiliary materials, the fiber clusters in the mixture are not easy to disperse, and the particle size of the auxiliary materials is uneven. It is very loose, and the particle size of debris is still uneven. After pulping, dehydration and billet forming, the internal structure particles of the billet are unevenly dispersed, and the thickness of the billet is uneven, which reduces the structural strength and affects the appearance of the product. The quality is not easy to control. High production costs affect market sales
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[0008] The raw materials used in fiber cement products are cement and industrial waste, fibers and auxiliary materials. In the batching process: the proportioning relationship between cement and industrial waste residue, fiber, and auxiliary materials is allocated according to the following weight percentages:
[0009] Cement and industrial waste: fiber: auxiliary material = (81-87%): (10-14%): (2-4%);
[0010] In the pulping process: put the above prepared raw materials in a mixer, add water and stir evenly to form a slurry with a concentration of (8-14%);
[0011] In the refining process: the slurry from the pulping process is transported to the slurry refiner, which is 0.15 meters 3 / min-0.25m 3 The speed of rotation per minute finely grinds the slurry, so that the particle size of the impurities contained in the processed product slurry is less than 1 mm, and there is no accumulation of fiber bundles;
[0012] In the pulping process: the product slurry that meets the re...
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Abstract
The present invention relates to a production process for raising quality of fibre cement product, and is characterized by that in the original technological process a slurry-grinding procedure is added after the raw material slurry-making procedures, so that the crude slurry can be ground into fine slurry capable of meeting the requirements of product quality. The tests show that its transverse bending strength is raised by 100-150 N / m, and its longitidinal bending strength is raised by 10-35 N, and the surface of its product is smooth and level, its wall thickness is uniform, its error is less than 0.2 mm.
Description
Technical field: [0001] The invention relates to a production process of a cement product, specifically a production process method of a fiber cement product. Background technique: [0002] At present, the production process of fiber cement products commonly used by cement enterprises is composed of batching, pulping, pulping, pulping, dehydration, billet copying, cutting, forming, stacking, maintenance and quality inspection in sequence. In this process, since the ingredients used are mixed with cement, fiber and other auxiliary materials, the fiber clusters in the mixture are not easy to disperse, and the particle size of the auxiliary materials is uneven. It is very loose, and the particle size of debris is still uneven. After pulping, dehydration and billet forming, the internal structure particles of the billet are unevenly dispersed, and the thickness of the billet is uneven, which reduces the structural strength and affects the appearance of the product. The quality i...
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IPC IPC(8): B28B1/52
Inventor 黄平何茂雷
Owner JIAHUA SPECIAL CEMENT