Portland Cement Crusher for Sale

Portland cement clinker can be a dark grey nodular material produced by heating ground limestone and clay with a temperature around 1400 C-1500 C. The nodules are start with a fine powder to create cement, with a little bit of gypsum added to control the setting properties.

Polished portion of nodule (scanning electron microscope image). A lot of the nodule is alite (light grey) – some clusters of belite are visible (arrowed). Aluminate and ferrite are present although not visible as of this relatively low magnification.

Portland cement production line and cement equipment

1. Cement crushing

During cement producing process, most raw materials, including limestone, clay, coal and iron ore, needs to be firstly crushed into smaller size, typically to below 50 mm, which can be required by cement grinding mill to improve production efficiency. Because materials of a good and uniform granularity can help to eliminate cement mill’s load, then cement mill can work with high productivity and quality.

SBM give you good quality crushers specially designed for cement plant, such as cement jaw crusher, cement impact crusher, cement cone crusher and cement vertical crusher. We will recommend you the greatest suitable crusher models and kinds for you cement plant in accordance with your raw material’s hardiness, input size, as well as your required production capacity.

2. Prehomogenization of raw materials

After crushing, some or every one of the garbage are then roughly blended by material piling machine in the “prehomogenization pile” high are lots of parallel material bed of same thickness. Next, the raw materials are ground together inside a rawmill. Accurately controlled proportions of each material are delivered to the belt by weigh-feeders.

3. Raw mix preparation

Regarding a dry cement production process, it requires three a lot of raw mix (including recycleables, fuels, clinker, mixture, gypsum etc) to create one a lot of extra Portland cement. You need to control the fineness of raw mix that is specified in the sized the largest particles, in order that lower than 5%-15% by mass of particles of theacross, which can be extremely important for completing the chemical reactions within the kiln, and for ensuring the mix is homogeneous.

To ensure there are no larger particles in the raw mix, you will need raw mill to grind the raw materials into fine powder of required size. SBM can provide raw mills of different models and capacities, such as ball mill and vertical mill, suitable both for dry process as well as wet process.

4. Raw mixture homogenization, preheating and predecomposition

In case there is a dry cement producing process, the raw mixture homogenization system plays the role of stabilize the kiln input composition. The preheater is utilized, in the place of rotary kiln, to preheat and partially decompose the raw mixture, to be able to shorten rotary kiln length.

(1) Raw mixture dispersion. 80% from the heat transfer process takes place inside the pipeline entrance. The raw materials fed in pre-heater progress using the airflow and obtain dispersed.
(2) Gas-Solids Separation. Since it enters into cyclone muff with powder, the flow of air needs to spiral and move down meanwhile until it comes to the conclusion from the cone then upwards and discharges from vent pipe.
(3) Predecomposition. The predecomposition process improves the decomposition ration in kiln to a lot more than 90%, that is best for large-scale production.

5. Formation of clinker

Following the predecompositon, the raw mixture is convoyed to rotary kiln for calcinations. It really is heated and decomposited there, with a group of phase reaction, with temperatures increasing on the length of the cylinder up to and including peak temperature of 1400-1450 C. Here we get clinker because the resulting material. On cooling, it’s conveyed to cement mill.

6. Cement grinding

Usually, you will need to put in a quantity (2-8%, but typically 5%) of calcium sulfate towards the clinker and the mixture you get needs to be finely grounded to make the finished cement powder, in order to attain the desired setting qualities inside the finished product.

In this instance, you will need cement mills for cement grinding. SBM offers you the very best qualified professional cement ball mill for the cement plant. Click the link to know much more about our ball mill.

7. Cement packaging

The cement will be sent to end-users either in bags or as bulk powder.