National Metallurgical Laboratory - Mineral Processing

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Facilities Available

The thrust is on beneficiation of low grade ores and minerals to meet the requirements of quality

raw materials for process industries. The run-of mine ore normally contains valuable mineralsassociated with unwanted gangue minerals. Beneficiation/upgradation of the low grade ores and

minerals generally involves combinations of the ore to achieve liberation of valuable minerals

from the gangues followe d by their separation exploiting the difference in physical and physico-

chemical properties. Laboratory/bench scale studies involve beneficiation involving

classification, gravity separation, magnetic separation, electrostatic/high tension separation and

froth flotation. Subsequently process flow-sheets are developed and further validated through

pilot scale trials. Under this program extensive studies have been carried out for beneficiation of

ferrous, non-ferrous & non-metallic and coals for different sources in the country and many over-

seas samples. In addition to beneficiation, agglomeration comprising of Briquetting, Sintering and

Pelletization of fine grained concentrate is also an active area of our research.

R & D Services

Characterization of low grade ores and minerals

Bench and pilot scale beneficiation

Agglomeration (Briquetting, Sintering &

Pelletization)

Development of process flow-sheet

Plant trouble shooting

Education and training of personnel

Major Achievements:

more than 750 investigations have carried out on different types of low grade ores and mineral

and technical know-how provided for commissioning of mineral processing plants in the areas

of ferrous, non-ferrous, metallic & non-metallic minerals and coal to public and private sectors

in the country.

Major Facilities

Bench scale equipment

Equipment for comminution (crushing and grinding), classifi cation, gravity separation,

magnetic separation, electrostatic/ high tension separation, froth flotation, dewatering and

agglomeration. Many advanced separation equipment such as enhanced gravity separators, high

intensity magnetic separator, column type flotation cells, dry beneficiation equipment have been

added to the facilities

Pilot Plant facilities (click here)

Know-how developed

Iron ore washing plants at: Noamundi for Tata Steel, Dalli-Rajhara for Bhilai Steel Plant,

Barsua for Rourkela Steel Plant, Gua for Indian Iron and Steel Company, Bolani for Durgapur

Steel Plant, Kiriburu for Bokaro Steel Plant, Bailadila for Rastriya Ispat Nigam Ltd.

Visakhapatnam, Donimalai for export and for ijayanagar Steel Plant, Kudremukh for export,

Kanjamalai for Salem Steel Plant, Daitari Gandhamardan for proposed Paradeep Steel Plant, Goa

Iron Ore fines for export and pelletising plant.

For nonferrous ores: Malanjkhand Copper Concentrator for HCL, Rakha Copper Concentrator for

HCL, Bandalamattu Lead Zinc Ore Concentrator for Hindustan Zinc Ltd, Copper Lead Zinc

Concentrator for Sikkim Mining Corpn.,

For non-metallic minerals: Fluorspar Concentrator for Gujarat Mineral Development Corpn. Ltd.,

Fluorspar Concentrator for Madhya Pradesh & Maharashtra Minerals & Chemicals Pvt.Ltd.,

Graphite Plant at Titlagrh, Orissa. Flotation circuits for the coal washeries at Jamadoba for

TISCO, West Bokaro for TISCO, Gidi for Central Coalfields Ltd., Dugda for Bharat Coking Coal Ltd.

International Assignment completed: Iron ores from Egypt, Syria, Nepal, Ukraine, Canada

Copper ores from Nepal and Zambia Manganese ores from Burma and Phillipines Lead-Zinc-

Graphites from Malaysia and Bhutan Chromite from Syria Beach sand from South Korea

Limestone from Saudi Arabia, Syria and Thailand Phosphate from Uganda Coal from Indonesia

Zinc ore from Thailand Indian Iron ore by Hamersley, Australia

Major Facilities

Image Analysis System, Wild Zoom Stereo Microscope, Micro Hardness Tester, DTA/DTG

Analyser, System For Thin S, Reflectivity Measurement, Isodynamic Separator, Heavy Liquid

Centrifuge, Laser Particlr Sizer , Laser Zee Meter, Viscometer, Contact Angle, Zeta Potential,

Research Areas

Mineral ProcessingExtractive Metallurgy

Surface EngineeringApplied & Analytical ChemistryMaterials EngineeringMaterials EvaluationEnergy & Environment

R&D Services

ConsultancyTesting and AnalysisCalibrationCerified Reference MaterialsTechnologies OfferCustomer Services

Infrastructure/Facilities

Analytical/Cha racterizationPilot Plant

Quick Links

NML Madras CentreMajor Projects

IPR HelpdeskKnowledge Resource CentreKnowledge Networking
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National Metallurgical LaboratoryJamshedpur-831007 | Tel: +91-657-2345000-001, 2345028, 2345205 | Fax: 91-6572345213, 2345153 , E-Mail: [email protected]

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Porosimete r, Heating Microscope, Carbon Coating, Crushing: Jaw crusher, Roll crusher

Grinding: Ball mill, Rod mill, Vibro-energy mill Classificati on: Automatic sieve shaker (wet &

dry), Micro Sieves, Tyler sieves, Mozley cyclone Gravity Sepn.: Harz jig, Mineral jig, Wilfley

tables, Mozley Vanner & Mineral separator, Mullti gravity separator, Kelsey jig, Falcon

concentrator Flotation: Denver D-12 cells, wemco fagergren, deister flotation Column system,

Jameson cell, NML Column Set up Electrostatic: High tension, Plate type, & Tribo Separator

Magnetic Sepn.:Dey & wet high intensity separator,low intensity drum separator, Davis tube,

Iuduced roll & Permroll. Dewatering: Thickner,Drum filter, Wemco filter Kit, Larox pressure

filter Fine Grinding: Planetary Mill (RETSCH),Centrifugal mill ,Vibrating cup mill, Vibro energy

mill Plot Plant Facilities
http://www.nmlindia.org/pilotplant.htmlhttp://www.nmlindia.org/disc.htmlhttp://www.nmlindia.org/rti.htmhttp://www.nmlindia.org/index.htmlmailto:[email protected]://www.csir.res.in/http://www.nmlindia.org/contact.htm

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National Metallurgical Laboratory - Mineral Processing