Four effective methods of refractory brick pressed by refractory brick grinder

Forming during the manufacture of refractory bricks pressed by refractory brick presses, it refers to refractory raw materials, and passes the external force to the mold.
The blank in the process is a device of predetermined size and shape. Refractory brick forming can effectively improve the physical and chemical properties of the product, and it can also improve the refractory material through the formed structure.
The common methods of refractory brick forming by common refractory brick presses are generally divided into four types in accordance with the requirements of expected physical properties: grouting, plastic molding, mechanical molding, and melt casting. The selection of the molding method is mainly based on the requirements of the art such as the nature of the mud, the shape and size of the blank.

1. Grouting molding method of refractory brick press: inject the used mud into the gypsum mold, and the gypsum mold absorbs the mud
Water and collect it in the mud film with less moisture on the surface of the plaster mold. The longer the time, the thicker the mud film is. The pouring time of the plaster mold after grouting mainly depends on the required thickness of the product. When the thickness of the brick is reached, the excess mud in the gypsum mold is poured out and left for a while. After the brick has a certain strength, it is demoulded, dried and repaired. The water content of the grouting slurry is generally 35≤45%. This method is mainly used to produce thin-walled hollow products such as thermocouple sleeves, high-temperature furnace tubes, and crucibles.

2.The plastic molding of brick presses is also called extrusion molding),-generally refers to the preparation of wet clay with a moisture content of 16-25% in the plastic state.
method. A molding method for making plastic clay stronger through a die hole is called extrusion molding. The continuous screw extruder is used in conjunction with the brick press to mix, compact and shape the mud. The molding method is suitable for processing plastic slurry into strips and tubular blanks with uniform cross sections.

3, refractory brick press equipment, press forming, press forming, also known as semi-dry forming, refers to the use of slurry with a moisture content of about 2-7%
Method of preparing the green body. -Generally adopt various brick press, tamping machine and vibrating machine. Compared with plastic forming, the green body has a density
High, high strength, small drying and sintering shrinkage, easy to control product size and other advantages.

4. Refractory brick melt casting This is a method of melting materials at high temperatures and casting them directly into the product. Currently the main
It is used to produce high-grade refractory materials such as corundum, mullite, zirconium corundum.

Of course, the choice of molding method is also limited by the conditions of the refractory brick press manufacturer. Generally, refractory bricks
Machine enterprises should select other suitable forming methods on the premise of meeting the technical requirements of refractory bricks. No matter what method is used, the preform after molding should meet the requirements of shape, size, accuracy and certain mechanical strength.