Confidential for Polysius Engineers – BALL CHARGE DESIGN free download excel sheet

BALL CHARGE DESIGN you will have to fill the cells which are highlighted in yellow and the results will appear in Red Ball charge management   Top up for ball wear compensation While a Ø 90 [mm] becomes an Ø 80 [mm] an Ø 80 [mm] becomes a Ø 70 [mm] and so on … […]

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METHODS MANUAL OF CHEMICAL TESTS FOR HYDRAULIC CEMENT (IS: 4032-1985)

METHODS MANUAL OF CHEMICAL TESTS FOR  HYDRAULIC CEMENT (IS: 4032-1985) PARTIAL ANALYSIS   Determination of Free-Lime              The Free Lime analysis of Clinker & Cement sample is done Chemicals Required: 1. Ethylene Glycol: Concentrated Bromocresol Green: 0.1gm of Bromocresol Green                  powder in 100ml absolute alcohol. 0.1N Hydrochloric Acid: 8.5ml conc.HCl in + 991 […]

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Effect of Minor Elements on Clinker and Cement by Javed I. Bhatty

Effect of Minor Elements on Clinker and Cement by Javed I. Bhatty Senior Scientist, CTLGroup, 5400 Old Orchard Road, Skokie, Illinois 60077 847.972.3082, jbhatty@ctlgroup.com   The effect of minor elements on the production and performance of portland cement have been presented in this report. The elements studied are lead, molybdenum, antimony, copper, cadmium, beryllium, titanium, […]

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Cement Fineness and Sturtevant Separator Internal Geometry

Cement Fineness and Sturtevant Separator Internal Geometry   Cement Fineness and Sturtevant Separator Internal Geometry by        Sam Fujimoto, Process Engineer   A study was initiated to investigate why Sturtevant Separators of different sizes performed differently.  This was prompted by an effort to improve cement blaine/325 ratios on certain units known to historically to be […]

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AIR SEPARATORS

AIR SEPARATORS   4.0       AIR SEPARATORS 4.1       Introduction Separators are utilized in a closed circuit grinding system for the purpose of separating (classifying) the fine and coarse particles of the feed.  The fine particles are passed through the separator to become finished product while the coarse particles are returned to the mill as rejects for […]

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Ball Mill Shell Drilling Pattern

Ball Mill Shell Drilling Pattern   Lafarge Mill Grinding Reference, Edition 2 Addendum                                                                                                                     Ball Mill Shell Drilling Pattern There are two main types of drilling patterns employed in the majority of ball mills used in the United States and Canada.  They are the American Lorrain and DIN patterns, (DIN is the German/European equivalent to ASTM).  […]

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Ball charge optimization

Ball charge optimization Date:              07.02.2002 Author(s):      Martin Rothfuchs, Marc        Brunelle, Wolfgang Stoiber, Didier Dumont last change by Martin Rothfuchs, 13.09.2001 15:38:23 Title: Ball charge optimization   Purpose Optimization of a ball charge for cement and raw mills with objective of optimizing the grinding efficiency.   Best Practice The ball charge in first and particularly in […]

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Example Milling Problem: Low Mesh/High Blaine

Example Milling Problem: Low Mesh/High Blaine Cement At Plant A, the finish mill has been operating satisfactorily up until last weekend.  During the weekend, mill started backspilling forcing the shift crews to reduce feed rates by as much as 15%.  Curiously it was also reported that blaine rose from 370 to 410 (m2/kg) but the […]

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Practical advanced & comprehensive guide for ball mill design , operation & maintenance

advanced & comprehensive guide for ball mill design , operation & maintenance Mr Ortega   the source of the data : Lafarge ,  FLS guides , Holcim Guide , Duda data  cement book and other Engineers and of course Mr Ortega 1           FEED AND FEED SYSTEM 1.1         Feed Temperature   Plants with satellite coolers have high clinker […]

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Vertical Roller mills

Vertical Roller mills Main parts of a vertical roller mill Mill body feed Hydraulic system Nozzle and retention ring mill body seperator Vertical roller mill: frame type Polysius: Polroll Gbr. Pfeiffer: MPS Vertical roller mill: rocker arm type Loesche: LM Kobelco: OK   Processes inside a vertical roller mill Grinding The material is trapped between […]

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