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Bentonite Raymond mill solves waterproofing problems in the field of building materials

Release date: 2023-09-28 10:06:27

Guilin Hongcheng bentonite Raymond mill, a new environmentally friendly large-scale pendulum mill-HC large-scale pendulum mill. The bentonite produced by the HC large-scale pendulum mill is widely used in building materials as a thickener, adhesive, etc. due to its expansion and water absorption. The rational use of bentonite can not only improve the performance of building materials, but also reduce the cost of materials and effectively save resources.

1. Overview of properties of bentonite
Bentonite is a silicate with a lamellar structure, and its main component is montmorillonite. Montmorillonite has a monoclinic crystal structure, consisting of two layers of silicon-oxygen tetrahedral wafers sandwiching a layer of aluminum-oxygen octahedral wafers. It is a 2:1 type layered silicate mineral.
The bonding force between the oxygen layers in the montmorillonite molecular structure is very small. Water and other polar molecules can easily enter between the crystal layers. At the same time, the cations in the structure can easily be replaced with other ions.

Application of Bentonite in Building Materials
2. Bentonite is widely used in building materials because of its good expansion and water absorption.
1. Material characteristics
(1) The crystal structure of bentonite allows water molecules to enter between its lattice layers. At the same time, because the molecular structure is negatively charged, the particles repel each other, and external pressure will not easily squeeze out the adsorbed water molecules.
(2) Bentonite has a small volume and a large specific surface area. In theory, it can absorb water equivalent to 8 to 20 times its own volume. After washing with water, it will be in a gelled state, which can effectively prevent the passage of water molecules and form a good waterproof layer.

3. Wall materials
Adding the characteristics of bentonite itself to wall materials can better realize the properties of the material, improve the functions of the wall materials, and tap better performance.
3. Cementitious materials
①White cement
Bentonite and other materials can be processed to produce white cement. Compared with ordinary white cement, this white cement has the characteristics of good fluidity and high whiteness.
②Mortar and concrete
Bentonite has good water absorption and water retention properties. Putting it into mortar can absorb the water in the mortar and act as a thickening water-retention material.
After adding organic matter to bentonite, a complexing reaction will occur to form a cross-linked polymer with bentonite particles as the main network points. The network structure of organic matter effectively limits the unlimited expansion of bentonite, and also limits the dry shrinkage of cement slurry, making the mortar and concrete structures more compact and tough, effectively preventing the seepage of water and the intrusion of harmful media.

4. Paint
①As an inorganic thickener
Since montmorillonite has a negative charge, when bentonite is dispersed in the paint, it will attract the polar groups in the paint to form a bentonite-organic complex. When the organic molecules enter the interlayer structure of the montmorillonite, the bentonite will expand, which can make the paint The consistency increases.
②As an auxiliary adhesive
Bentonite has good adhesion and hiding power. When put into paint, it can enhance the adhesion of the paint. It can also replace part of the base material, reduce costs, and be recycled.

Guilin Hongcheng Bentonite Raymond Mill Factory learned that bentonite is widely used in building materials as a thickener, adhesive, etc. due to its swelling and water absorption properties. The rational use of bentonite can not only improve the performance of building materials but also reduce the cost of materials. cost and effectively save resources. my country has large reserves of bentonite resources. At present, building materials are developing in a green direction. Increasing the modification and technical research of bentonite is still a focus of our work.
Guilin Hongcheng non-metallic mineral bentonite Raymond mill has stable performance, excellent quality, high productivity and efficiency, energy saving and environmental protection. It has a number of patented technologies and is used in infrastructure construction, mineral deep processing, solid waste recycling, energy saving and emission reduction, environmental protection, metallurgy, It is widely used in chemical industry, electric power and other fields and is very popular. For inquiries about bentonite processing technology and bentonite grinding mill quotations, please contact us at:mkt@hcmilling.com