Littleford Offers New Efficiencies in Iron Ore Pelletizing


Iron Ore Pelletizing

2009

Littleford Day, the Leader in Continuous Iron Ore Mixers has proven these machines to be an integral part of worldwide Iron Ore pelletizing processes. These machines designed specifically for the Iron Ore Industry provide the efficient and high quality dispersion of bentonite and other additives. Using only one motor with very low electrical consumption per ton with minimum wear results in significant cost savings not only in initial investment but also over the long term.

PROCESS DESCRIPTION

The Littleford Continuous Iron Ore Mixer is a stationary horizontal drum utilizing proprietary advanced design mixing impellers on a massive shaft supported by heavy duty outboard bearings. Power is transmitted from the drive motor to the mixer shaft through a fluid coupling and directly coupled to a heavy duty speed reducer. Only one motor is required.

The ore concentrate, with dry or liquid additives, is charged continuously into the mixer through an inlet at the top of the drum near the drive end. The materials progress through a unique back-mixing action to the opposite end, where they are discharged through an opening.

MIXING TECHNOLOGY

The proprietary Littleford "Taconite" abrasion resistant mixing impellers rotate at special speed inside the drum, imparting unique motion to the materials. Each fine particle is independently directed toward the vessel walls and back again, criss-crossing with other particles to create a turbulent mixture of product particles and air. This trajectory exposes each individualized particle to bentonite, limestone fines and water. Accurate dispersion of additives and thorough moisture absorption result in a homogeneous mixture. This "mechanically fluidized bed," with its high amount of mixing, assures a discharged product that is totally uniform - creating advantages not possible with mulling compaction or pugmill mixing.

PROCESSING AND COST SAVING
ADVANTAGES

o Internal proprietary liners offer increased production with less power requirements (approximately 0.45 kW/MT) and reduced wear rates.

o Liner life over 2 years in heavy wear areas.

o Intimate distribution of bentonite, resulting in potential bentonite savings.

o Retention times of less than a minute will deliver an intimately mixed and/or uniformly moistened ore product.

o A predictable moisture content within a specified range, with no moisture packing or undesirable water spots.

o Maximum agglomeration control during the balling process.

o A resulting green pellet of consistently uniform quality.

o A minimum of green pellet recycling.

o Only one motor is required with heavy duty main shaft.

o Improved duty cycles and up time reliability.


STANDARD WEAR LINER PROPRIETARY LINED
Iron Ore Iron Ore

MIXER SIZE MAIN DRIVE KW THROUGHPUT MAIN DRIVE KW THROUGHPUT
MOTOR, HP MT/HR MOTOR, HP MT/HR

KM-1200 100 75 65 60 45 80
KM-2000 125 90 80 100 75 135
KM-3000 150 110 100 150 110 200
KM-4200 200 160 130 200 160 280
KM-6000 250 200 160 300 244 400
KM-8000 300 244 195 400 299 532
KM-10,000 400 299 260 500 373 665
KM-13,500 500 373 320 800 597 900
KM-15,000 600 448 390 800 597 1000
KM-20,000 800 597 512 1000 746 1200
KM-25,000 1000 746 640 1200 896 1440

Company Name: Littleford Day, Inc.
Address 1: 7451 Empire Drive
City: Florence
State: KY
Zip: 41042
Country: USA
Phone: 859-525-7600
URL: www.littleford.com

Contact Name: Dee Webster
Title: Sales/Marketing Assistant
E-mail: dwebster@littleford.com

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