# Category Archives: Cement Grinding system

#### Clinker Grinding Blueprint written by Grinding Experts – VERY IMPORTANT –

Clinker Grinding Blueprint written by Grinding Experts Approximately 85 % of the total energy expended in the production of cement is used for size reduction of the raw material and for grinding; 75% of the total energy is consumed by grinding operation alone. The degree of mill efficiency is controversial, depending on its […]

Continue reading#### Important Figures in Cement grinding

Important Figures in Cement grinding Ball Mill-Ball Weight & Surface Area Ball Mill Charge Volume Mill output when other materials than clinker are ground in the same mill

Continue reading#### Grinding Process Important Formulas ( Updated & Complete )

Grinding Process Important Formulas ( Updated & Complete ) Internal volume of mill Critical Speed of Ball mill Ball size calculation Separator efficiency Mill Charge volume Grindability determined according to Hardgrove Hardgrove’s grindabilty index is based on Rittinger’s first law of grinding. Equipment Grinding bin, with 8 balls (D 25.4 mm) Grinding ring activated […]

Continue reading#### pfeiffer 4500 MPS gear box vibration problem

pfeiffer 4500 MPS gear box vibration problem I saw the below problem on whatsapp group please help him Dear all, We have pffifer 4500 MPS in our plant, we suffer that as soon as soon as the metal feed gate goes to the reject side, the mill is get discharged and tripping as gear […]

Continue reading#### Critical Ball Mill Speed Calculator Excel sheet

Critical Ball Mill Speed Calculator Excel sheet Critical Speed = 42.3/sqrt(diameter) % Critical speed < 70 à “slow” 70-75% à “normal 75% à fast you can download it from the below link https://www.mediafire.com/file/4o7biknoa0es4z8/Mill%20speed%20Excel.xlsx

Continue reading#### Discussion about Cement Mill Operation

Discussion about Cement Mill Operation from the above pictures ( answer the below questions ) 1- what is the Cement Mill Feed rate ? 2- what is the Cement Mill Output ? 3- how much the Separator Efficiency? 4- how much the Cement Temperature at the Cement Mill Output and how can we reduce […]

Continue reading#### Cement mill audits

Cement mill audits Long & short term data analysis Production Operation Quality Evaluation & Potential estimation based on:-Comparison with other grinding systems -Theoretical calculations Short Term Data Analysis Operation Quality Targets of a “B” Level Audit Get to know well each of the circuit components Measuring is the base Requirements for the “B” level […]

Continue reading#### Chapter 4.2 Classifiers and Separators by Michael J. Knoflicek

Chapter 4.2 Classifiers and Separators by Michael J. Knoflicek Project Manager, Humboldt Wedag, Inc., Tel: (770) 810-7313, Email: mknoflicek@humboldt-wedag.com Due to the importance of the separation process to the energy efficiency of grinding systems and to the quality of the product, a separate chapter has been devoted to this topic. Grinding and sepa- ration are […]

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