FLSmidth to supply the world's biggest Vertical Roller Mill
FLSmidth to supply the world's biggest Vertical Roller Mill

FLSmidth to supply the world's biggest Vertical Roller Mill

A Vertical Roller Mill will be installed in a plant for cement grinding at Mukterpur, Bangladesh.

The biggest ever Vertical Roller Mill for cement grinding is under execution for Shah Cement Industries Ltd., Bangladesh, at its Char Merashar plant located at Mukterpur in Bangladesh.

Shah Cement Industries Ltd, a flagship company of the Abul Khair Group, is one of the largest cement manufacturing companies in Bangladesh. The contract with FLSmidth includes the supply of OK™¢ 62-6 mill with FLSmidth MAAGTM MAX Drive, ECSTM (Expert Control System) from FLSmidth Automation, FLSmidth PfisterTM feeders, FLSmidth Airtech process bag filters, process fans and auxiliary equipment from raw material hopper discharge to process bag filter discharge. The civil engineering and system engineering are part of FLSmidth's scope of work.

OK™¢ Mill, the only mill designed specifically for clinker and slag grinding application, stands different from other roller mills due to its inbuilt unique features like:

  • Patented roller shape with dual lobes and de-aerating groove, resulting in higher grinding efficiency;
  • Patented wedge shape between roller and table, stabilises grinding bed for vibration proof operation;
  • High-efficiency dynamic separator for maximum product quality and control.
  • The OK™¢ 62-6 mill with six grinding rollers of 2.65 m diameter each, 8.1 m diameter grinding table with 11,600 kW connected power will be employed to grind various blended cement ranging from clinker portion up to 95 per cent and slag portion up to 100 per cent. The grinding capacity ranges from 380 tph to as high as 640 tph with a single mill. The product fineness requirement varies with the type of cement produced ranging from 3,600 to 4,000 Blaine. The above specification makes OK™¢ 62-6 mill the biggest in the world in terms of mill size and rated capacity ever to be installed in a cement plant.

    FLSmidth MAAG™¢ MAX Drive
    FLSmidth MAAG™¢ MAX Drive, is a three-stage spur gear unit designed to drive vertical mills up to 15 MW. The drive consists of two side drives with vertical motors and have two pairs of output pinions connected to the central girth gear, to drive the mill central part, which takes the vertical loads of the mill and also transmits the torque. The whole drive system is developed on FLSmidth MAAGTM Gear's knowhow and expertise acquired during the last 100 years.

    FLSmidth, a preferred partner
    When asked about the reasons for choosing FLSmidth and the OK™¢ mill for this project, Hafiz Sikander, Director Operations, Cement Division of Shah Cement Industries Ltd, stated, 'We have selected the OK™¢ 62-6 mill for its exceptional efficiency and reduced power consumption. It is going to be the largest single unit grinding mill in the industry.'

    (This article has been authored by Logesh Baskaran, Senior Manager - Sales, Products & Upgrades, FLSmidth).

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