Intensifier for grinding cement, clinker, lime, hard-to-grind materials, Kyiv

Intensifier for grinding cement, clinker, lime, hard-to-grind materials of the INTAL brand

We offer for delivery an intensifier that allows you to significantly increase the efficiency of the mill, saves electricity, and improves the quality of production.
The dosage of grinding intensifier is from 0.10 to 0.7 kg per one ton of product (cement, clinker, lime, etc.)
The dosage depends on the specific goals faced by the enterprise during the production or grinding of cement, clinker, lime, etc. with the use of a grinding intensifier.
Currently, these requirements mainly consist of increasing the productivity of the grinding mill and reducing the specific consumption of electricity while maintaining the current indicators of the quality of the manufactured product.

The intensifier is supplied by a dosing device either to the material on the conveyor belt or to the first chamber of the mill.

Our world is located on the border of phases. The sun's beam, overcoming the vacuum of space, enters the atmosphere and is refracted, the oxygen of the air, interacting with the surface of the water, dissolves in it. Any chemical reaction originates on an inhomogeneous surface at a point with an excess of energy. It is this excess of energy that plays both a positive and a negative role in the interaction of substances.
Clinker is a baked very hardgrains. Therefore, grinding clinker requires significant energy expenditure. To facilitate the grinding of clinker, a grinding intensifier is added to it.(//tractor-service.com)
Grinding intensifiers are chemical substances that are added to the feed of the mill to increase the efficiency of grinding in the mill and thereby increase productivity and specific energy consumption.
Grinding intensifiers have been used for many years in the grinding of cement and raw flour. But they are more widely used in grinding cement, and in grinding the raw mixture, for the reason described above - the cost of electricity when grinding cement is much higher. However, the mechanism of their action means that they should be equally effective in grinding raw materials, so some cement companies constantly use them in their ball mills for raw flour. When particles of Portland cement clinker are destroyed during the grinding process, a new surface is formed, which inevitably has some surface electric charges arising from the breaking of chemical bonds in the material. From the point of view of solid state chemistry, a large network of microcracks appears in deeper layers located below the destruction zone. When the material breaks in an aqueous environment, absorption layers of solutions of decreasing hardness are formed in the microcracks, which have a wedging effect and facilitate the destruction of the ground material.

As is known from physics, identical charges repel, and opposite charges attract, which leads to repeated agglomeration of particles destroyed during crushing.
Grinding intensifiers are surface-active polar chemical compounds with a high dipole moment. The electric dipole moment is a vector quantity characterizing the asymmetry of the distribution of positive and negative charges in an electrically neutral system. Thanks to their special structure, they neutralize the tendency to agglomerate and contribute to effective grinding of cement. Alkanolamines, polyglycols, surfactants and other polar organic compounds exhibit such properties. The addition of such intensifiers contributes to the achievement of a high fineness of grinding and can significantly increase the output of the mill and reduce the specific consumption of electricity. The general effect of grinding intensifiers is reduced to increasing the grindability and improving the grinding process of the material. As a rule, grinding intensifiers are viscous liquids and can be dosed onto the mill feed belt.
The consumption of grinding intensifier depends on different factors and is selected individually at the production site. As a rule, it does not exceed 1 kg of intensifier per ton of cement. Despite the additional expenses, in total, the use of the grinding intensifier gives savings. There is a huge amount of industrial tests that demonstrate an increase in mill output, energy savings, and the resulting benefit is many times greater than the costs of grinding intensifiers.
As already mentioned, grinding intensifiers change the surface energy of particles. Thanks to this, the characteristics of the flow of cement material inside the mill and in subsequent operations completely change.
When grinding clinker, cement powder adheres to the grinding bodies and peculiar pillows are formed on the inner surface of the mill, reducing the impact efficiency of the layers. At the same time, part of the energy spent on grinding is converted into thermal energy, which causes an increase in the temperature of the ground cement and the productivity of the mill decreases. In the case of introducingadditives-grinding intensifiers into the mill, sticky cement cushions are not formed, as a result of which the energy of the falling grinding bodies is used more fully
Grinding intensifier also helps with the problem of over-grinding in ball mills by reducing the arrival time of particles in the mill.
When using a grinding intensifier, the problem of filling the space in the second chamber of the mill is solved. With better quality and fine grinding, the volume of the mill is used more rationally.
In this case, loading with smaller grinding bodies, which are the most effective when grinding, can be implemented. And vice versa - the use of smaller grinding bodies in the second chamber can be the key to success when introducing grinding intensifiers.
The effect of grinding intensifiers is complex, and their introduction into production requires a specific approach. Sometimes manufacturers refuse to use grinding intensifiers on the basis of one or two days of tests without adjusting the static separator and air speed, without taking into account the fact that the efficiency of the separator increases, and, of course, without using the opportunity to reduce the size of the grinding bodies in the second chamber of the mill. info.