Expert system for optimization of cement mills

Summary: The milling process in cement plants is extremely energy-intensive, accounting for nearly 45 % of the overall electrical energy requirements. Siemens has designed an expert system which uses actual plant data to make precise predictions about quality parameters for a production plant, and which can be integrated into the existing PCS-7 control system with no additional hardware. Mill control can be optimized on the basis of predicted quality parameters, which in turn reduces energy consumption and has a positive influence on the plant’s cost-effectiveness and availability, as well as on product quality. The first pilot project was conducted at the Südbayerische Portland-Zementwerk in Rohrdorf.

1 Portland cement production in Rohrdorf

At the Südbayerische Portland-Zementwerk in Rohrdorf, the raw materials extracted from the neighboring quarries that are necessary for producing Portland cement clinker are stored in a blending bed hall and then ground into raw meal in a raw mill. In the rotary kiln the raw meal is then burnt to cement clinker, which is the basic material for all types of cement. The plant has four ball mills for a total output of around 270 t/h. Grinding is performed in a ball mill with steel balls of different sizes. Depending on the type of cement, materials such as...

Related articles:

Issue 02/2013

Fives FCB signs new contract with Imsat Ceprocim Engineering

On 14.11.2012, Fives FCB signed an order with the Imsat ­Ceprocim Engineering company, a member of the SNEF group, for the ­supply of a TSV™ 3000 HF type dynamic classifier and a water injection...

Issue 1-2/2017 LOESCHE GMBH

Siam Cement Co. Ltd. once again places its trust in advanced ­Loesche vertical roller mills

The Thai cement manufacturer Siam ­Cement Public Co. Ltd. (SCG) has now commissioned Loesche with the delivery of a new vertical roller mill (VRM) of the type LM 56.3+3 CS for its cement plant in...

Issue 11/2011

Modernization at Aalborg Portland A/S

Aalborg Portland A/S of Denmark placed an order with Christian Pfeiffer to upgrade cement mill No. 2 in July 2011. Based in the North of Denmark and part of the Italian Cementir Holding, the company...

Issue 04/2010

Ecutec Barcelona S.L.

The ECUTEC Alpha Classifiers (Fig.) are successfully in operation with ball mill and impact mill systems for over a decade and earned their fame through extreme high yields, low energy consumption and...

Issue 09/2013

Quicklime mill for Bulgaria

Calcit JSC from Bulgaria has ordered a grinding plant from Gebr. Pfeiffer SE with an MPS 112 B VRM for its plant in Asenovgrad near Plovdiv. As early as 2003 GPSE was awarded a contract by Calcit...