Method for producing gypsum building products by using expressing technique

Abstract

The present invention provides a process method for producing a gypsum building product, namely an extruding method which is energy-saving and time-saving and which can rapidly produce a gypsum building product with excellent quality. The process method mainly consists of three major parts: the preparation of a gypsum extrusion material, an extruder group and a production process procedure. The structure of the extruder consists of four parts: a mixing segment 1, a buffer segment 2, an extruding segment 3 and a forming machine head 4. The extruding method produces a gypsum building product mainly through the following procedures: a material, which is mainly gypsum and to which a small amount of mixing water added, is extruded and formed by the extruder group, smeared into a specified size by a cutting machine head and becomes a finished product after a finishing processing. The gypsum building product of the present process method has the following advantages: (1) that the product substrate with a compressive strength one to two times as strong as that of the ordinary product by a pouring method is compact and has strong strength, (2) that the product without too much free moisture and does not need a heat drying or drying process, thus greatly reducing production energy consumption, (3) and that the present method with a rapid production speed and a short production cycle is a quick process for producing gypsum building products.

Description

Technical field [0001] The present invention relates to a process for producing gypsum building products, in particular to a method for producing gypsum building products by extrusion. Background technique [0002] With the requirements of protecting the environment and developing ecological buildings and green building materials, the green building materials with gypsum as the main body are getting more and more attention from the construction industry. This is because: gypsum is a recognized green building material: gypsum can be used as medicine and food Additives, gypsum are non-toxic and harmless; the energy consumption per ton of plaster powder production is only about 1 / 5 of the energy consumption of cement production; gypsum building materials can be recycled and recycled after dismantling. [0003] my country has favorable conditions for the development of gypsum building products resources. Not only the reserves of natural gypsum rank first in the world. And beca...

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Problems solved by technology

[0006] Second, due to the addition of excessive water, a large number of pores are formed in the product, which reduces the compactness of the material and the strength of the product

[0007] Due to the addition of a large amount of water in the ingredients, the drying of gypsum products has become a large energy consumption of the enterprise, which greatly prolongs the production cycle of the products that harden quickly; moreover, the product has low strength and poor water resistance, which limits the application of the product field

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