Which process of manufacturing cement is optimized?
Digitalization applied to cement manufacturing therefore makes it possible to adjust energy consumption and ultimately optimize the fuel mix while ensuring sustainability of expertise and production quality.
How does control work in cement industry?
Control Problems and Systems The quality of the produced cement depends on the raw materials and also on the processing operations. The control system of the cement production controls these operations to produce the maximum quantity of the cement with prescribed quality and minimum cost.
How does cement mill work?
A cement mill (or finish mill in North American usage) is the equipment used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement. Most cement is currently ground in ball mills and also vertical roller mills which are more effective than ball mills.
What is wet process of cement?
The wet process of cement manufacturing refers to grinding raw material into slurry after mixing with water and then feeding them into the wet process kiln for drying and calcination and finally forming clinker. The slurry’s water content is usually between 32%-36%.
How does Portland cement work?
Portland cement is the basic ingredient of concrete. Concrete is formed when portland cement creates a paste with water that binds with sand and rock to harden. These ingredients, when heated at high temperatures form a rock-like substance that is ground into the fine powder that we commonly think of as cement.
What is dry process of cement?
|Dry process||Wet process|
|1. Mixing of raw material in dry state in blenders.||1. Mixing of Raw materials in wash mill with 35 to 50% water.|
|2. The dry materials exiting the mill are called “kiln feed”.||2. Materials exiting the mill are called “slurry” and have flowability characteristics.|
What is the formula for cement?
Chemical Formulas of Cement Materials
|C3S||3CaO·SiO2 = tricalcium silicate = alite|
|C2S||2CaO·SiO2 = dicalcium silicate = belite|
|C3A||3CaO·Al2O3 = tricalcium aluminate|
What is dry process?
Explanation: Grinding and mixing of the raw materials in their dry state is known as dry process and grinding and mixing of the raw materials in their wet state is known as wet process. Explanation: 12% is the moisture content in slurry for dry process.
What is slurry in cement?
Cement slurry is a runny form of concrete poured into forms for molding. A mixture of sand, cement, water and sometimes lime, cement slurry can be used for residential construction as well as commercial projects to create foundations, pour slabs and driveways and more.
What is gel space ratio?
The gel/space ratio is the ratio of the solid products of hydration to the space available for these hydration products. A higher gel/space ratio reduces the porosity and therefore increases the strength of concrete.
What is hydration process in cement?
When cement, water, aggregate, and additives are mixed together, a significant heat increase occurs. This is due to the exothermic process in the reaction between cement and water (called hydration).
Why gypsum is added in cement?
Gypsum material is added for controlling setting cement. Gypsum plays a very important role in controlling the rate of hardening of the cement. During the manufacturing of cement process, upon the cooling of clinker, a small quantity of gypsum is introduced at that time of the final grinding process.
When was the optimization of cement manufacturing process?
Japan 1986 OPTIMIZATION OF CEMENT MANUFACTURING PROCESS G. Nakamura, T. Aizawa and K. Nakase Onoda Cement Co., Ltd., 1-1-7, Toyosu Koto-ku, Tokyo,japan Abstract. Cement manufacturing process is now operated with the aid of various control systems, such as raw meal compositi on control, kiln control and mill control.
How are control systems used in cement manufacturing?
Cement manufacturing process is now operated with the aid of various control systems, such as raw meal compositi on control, kiln control and mill control. Those systems have greatly contributed to achieve uniformity of quality as well as cost reduction of cement.
What is expert optimizer for the cement industry?
What is Expert Optimizer. OptimizeIT Expert Optimizer is a hybrid intelli- gent-system product developed by ABB. Part of its wide optimization suite, it is primarily designed for expert closed-loop process control and optimization of industrial processes, but can also be used for decision-support applications.
How much power does a vertical roller mill use?
ABSTRACT The power ingesting of a grinding process is 50-60% in the cement production power consumption. The Vertical Roller Mill (VRM) reduces the power consumption for cement grinding approximately 30-40% associated with other grinding mills.