Cement in powder form can be changed from plasticity paste to hard stone-like body and can become a total cemented granular materials through physical and chemical processes after being mixed with water. So cement is a good mineral binder. Cement can be not only hardened in the air, but also better hardened in the water in which it will maintain and develop strength. So cement is kind of cementitious material which will be of stronger hardness in water. Cement mil is used for cement grinding. Cement crusher is applied for cement crushing. In cement mining, you need to choose suitable cement grinding mill and cement crusher.
Invention of cement provides a material basis for the development of construction. From land engineering to water, underground engineering, cement plays an important role. Cement has been invented for a hundred years and it has always been the most widely used, the most consumed binder. In order to meet the needs of different construction, the increasing varieties of cement has reached more than 200 kinds. And the cement mill is of growing kinds. The cement grinding mill varies from traditional ball mill to new european trapezium grinding mill. Cement crusher includes jaw crusher, cone crusher,impact crusher,etc. In cement mining,cement grinding mill and cement crusher play a very important role. They can crush or grind the cment to required fineness for industry application.
According to the use of cement, it can be divided into general cement, special cement and other cements with some prominent performances,etc, such as expansive cement, low heat cement, colored cement, white cement. Among these, the general cement is the five main silicate cement for general construction work and the special cement is adapted to specific uses of cement, such as dam cement, oil well cement, masonry cement,etc. In all these products production, cement mill will be used.
In many varieties of cement, silicate cement is kind of cement with the most basic and the most amount in application. In interior decoration, this type of cement is commonly used. In addition, white cement and colored cement is also used in the decoration.
With the continual increasing demand for portland cement and constant pressure for reduced energy consumption, producers are exploring a wide variety of cost-saving manufacturing options. One option is vertical roller mill technology for finish grinding.
Traditionally, plants used ball mills to grind clinker and gypsum into cement. The result: the majority (60%) of finish grinding in the world is still performed using the ubiquitous ball mill. Ball mills are cylindrical steel shells with steel liners. These rotating drums contain grinding media that tumble inside the cylinder. The grinding balls cascade and tumble onto the clinker and gypsum to produce cement. Almost all ball mills use a form of closed circuit grinding that returns material that is too coarse back to the ball mill inlet while material fine enough to meet product requirements is collected. The separator or classifier determines which particles will be returned and which particles are sufficiently fine. With an effort to increase production, ball mill physical size has increased almost to the physical limitation dictated by the gas velocities and accompanying pressures necessary for the process. Ball mills may not be the most efficient means of size reduction but their reputation for product consistency and their simplicity of operation have made them an historic plant favorite.
In the cement grinding, grinding mill will be used to grind the cement clinker to an appropriate size to increase the size of its hydration, accelerate hydration rate so that it can meet the cement paste setting, hardening requirements. There are many kinds of cement grinding mill, such as ball mill, high pressure suspension grinding mill,coarse powder grinding mill, raymond mill, vertical mill,etc. In the exact production site, we can choose suitable cement grinding mill according to the exact requirement and material information. This procedure is almost the last process of cement production. So cement grinding will directly influence the products quality.
Ball mill is the most popular cement grinding machine used for grinding cement into powder in process line. Ball mill is an excellent tool to select mine or grind a variety of mine and other materials into fine powder. At the same time, on a wide range the ball mill is utilized in building material, chemical industry, etc. Ball Mill integrates such features as: low cost, low energy consumption, excellent durability, stable performance, easy and safe to operate.