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THE MINING

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Mineração

The Mine this located to 4,5 km of BR 040 (Belo Horizonte Rio de Janeiro), in the Municipal district of Congonhas MG, distant 71 km of Belo Horizonte MG.

ConceitosMineração [email protected]

RR AP

AM PA

AC RO MT TO

MACE RN

PB

PEAL

SE

PI

BA

GO

MGES

RJSP

MS

PR

SC

RS QUADRILATERAL IRON SOURCES

MG

MT

MS

TO

MININGPLOWING

IMPROVEMENT

TRANSPORT

ASPECTS ARE ASPECTS ARE CHARACTERISTIC GENERALCHARACTERISTIC GENERAL

ORE


•The BED has an area with 538 hectares and with an extension of 5,380 kilometers squared with reservation made calculations in 5,5 billion metric tons

•To Conceitos Mineração Ltd., it possesses all of the necessary licenses and, it is ready to enlarge the activities of the Mine with larger production.

MINING

The obtained products present the medium chemical specifications of:

Fe SiO2 Mn P Al2O3 PPC

65,50%

2,50% 0,20%

0,50% 1,60% 1,00%


RESERVATIONSThe reservation's calculation was subdivided and suitable and inferred based in geological mapeamentos, of which, it originated 10 geological

profiles, halfway of 200 meters.

The criterion for the subdivision reserves suitable and inferred was based on the quota of altitude 1.348 meters, that corresponds á altitude of the

road highway BR 040 (Belo Horizonte - Rio de Janeiro), the where it is observed to the continuity of the mineral body.

The ore above this quota was established as suitable reservation, and, below this quota as inferred reservation. It was also established as

maximum depth of the mineralized body the altitude quota 1.216 m

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Reervas


The table to proceed presents the main characteristics of the layers identified litológicas in the area.

LITOLOGIA SYMBOL DESCRIPTION

CANGA CG Superficial rusted shell, with medium thickness of 4,00 meters, could reach up to 10,00 meters. Very porous formed by hematita fragments and itabirito, limonitizada, hardened in surface;

ROLADO ROL Superficial layer, with medium thickness of 6,00 meters, formed by hematita fragments and itabirito (rolled) cemented by a silto-loamy head office;

HEMATITA HM Hematita layer, very moisturized, with hematita collations little altered, could be brandishes (HB) or it lasts (HD). They are related to the areas of sub-parallel cisalhamento to the acamamento of the itabiritos;

ITABIRITO RICO IR(L) Itabirito crumbly, laminated, moisturized, of dark gray coloration, with yellowish collations of limonita;

ITABIRITO SILICOSO IS Crumbly Itabirito, laminated of clear gray coloration whitish;

ITABIRITO DURO ID Layer of variable thickness, formed by itabirito bandado, silicificado (hard);

FILITO BATATAL PH Altered Filito, saprolítico, grafitoso, clear gray coloration with collations yellowed sericíticas;

QUARTZITO MOEDA QZ Quartzito sericítico of coloration yellow whitish clearing, with collations of filito sericítico.

• TYPE OF MINING– Open sky

• MÉTODO DE MINERAÇÃO A CÉU ABERTO - Hillside: altered topography

• VOLUMES THE THEY BE MOVEMENTS• 2 to 90 Million of Tons year

– (Sterile + Ore)

GENERAL CHARACTERISTICS OF THE GENERAL CHARACTERISTICS OF THE MININGMINING

MAIN OPERATIONSMAIN OPERATIONS

• Perforations• Dismount• Shipment• Transport


• Escavadeira– Electric– Hydraulic bucket– Bucket Steel cables

• Carregadeira– Bulldozer

• Capacities– 10 to 100 t bucket

SHIPMENTSHIPMENT

ConceitosMineração

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• Trucks– Deposits of Sterile– Pile of Homogenization– Primary breaker– Capacities : 35 to 218 t 240 st

TRANSPORTTRANSPORT


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• Decapeamento• Pluvial drainage

• Lowering of the Lençol Freático• Stabilization of the Slopes

• Opening of Access roads Ramps and Highways

AUXILIARY OPERATIONSAUXILIARY OPERATIONS


In general lines, the ROM it is directed for the unit of britagem and of classification, with the primary britagem being accomplished the dry in jaw breaker of the I MAKE 8050, and the peneiramentos the humid, where they are obtained the narrow-minded products and sinter thick feed (above 48 meshes).

The passer-by in the screen of 48 meshes is ciclonado in hurricanes of 20 '', being obtained in the underflow the sinter fine feed, between 48 and 100 meshes, being the overflow, below 100 meshes, directed for the concentration.

The secondary britagem is also accomplished to the dry in conical rebritador 485 of Baber Greene, which it processes the product above 1 ¼ '' originating from of the primary britagem, closing the circuit.


IMPROVEMENT

• Types of Iron ores

– Hematita: 60 to 68% Fe

• 86 to 97% Hematita Fe2O3

– Itabirito: 45 to 60% Fe• 64 a 86 % Hematita 14 a 36 % Quartzo SiO2

• Types of Improvement

– Hematita: Without Concentration– Itabirito: With Concentration

• Concentration: Increase of the tenor of Fe

– Decrease of Harmful Sludges

GENERAL CHARACTERISTICS OF THE GENERAL CHARACTERISTICS OF THE IMPROVEMENTIMPROVEMENT


MAIN OPERATIONSMAIN OPERATIONS

Britagem

Classification

Concentration

Reject Concentrated


• Objective: Reduction of Size

• Types– Primary: 1200 mm 300 mm– Secondary : 300 mm 50 mm– Tertiary : 50 mm 6,35 mm

• Equipments– Rotative breakers – Breakers of Jaws

BRITAGEMBRITAGEM

BREAKERSOF JAWS


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• Objective: Separation for Size

• Equipments– Vibratory sieves

– Classifying

CLASSIFICATIONCLASSIFICATION


• Objective: Separation of Minerals• Types

– Gravimétrica• Jigues: - 6,35 a 1,0 mm• Spiral : - 1,0 mm a 0,15 mm

CONCENTRATIONCONCENTRATION


AUXILIARY OPERATIONSAUXILIARY OPERATIONS

• Transport of Ore in bulk– Transporters of Belt

• Desaguamento– Sieves Desaguadoras– Filters – Espessadores


RELATIONSHIP WITH THE RELATIONSHIP WITH THE IMPROVEMENTIMPROVEMENT

GranulatedMetallurgy Metallurgy

Pellet Feed

Sinter Feed

Pelotização

Britagem

Classification

Concentration


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FINAL PRODUCTS, SPECIFICATIONS, GRANULOMÉTRICAS

Bitolado 1 ¾” a ¾”Bitolado fine ¾” a ¼”Sinter thick ¼” a 0,315 mm (45 meshes)Sinter fine 0,315 mm (48 malhas) a 100 meshesPellet feed 100 meshes a 400 meshes

PRODUCTION, RELATIONSHIP TO THE FED ORE

Bitolado de hematita 17%Bitolado de itabirito 21%Sinter total 14%Fines (incluindo a ama) 48%Pellet feed 33%Muds reject 15%

REGIME OF IMPROVEMENT

360 days year24 hours day

readiness75% in the britagem and classification90% in the deslamagem and flotação,

and in the filtragem

The fine ones are initially deslamados in hurricanes of 10 '', with the mud being discarded for the basin of I reject and the underflow, this above 400 meshes, directed for flotação. Here, the sílica is flotada and also rejected for the basin of I reject, being the concentrate deslamado in hurricanes of 20 '', as overflow being used as process water and the underflow, that it is characterized by the product pellet feed, being piled up.


LOGISTICS


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The ore is carried in trucks, heavy and it proceeds to Porto Dry, or be the place where the same will be accumulated forming a lung for the shipment of the wagons of the railroad.

In Porto I Dry, the ore passes to be put in the wagons, in a proportion of 75 ton to 90 ton for wagon, in a composition of 132 wagons and 2 locomotives totaling an average of 10.000 tons for trip. The time of load is of approximately 5 hours and more 24 hours of trip to his destiny. Porto of Rio de Janeiro.


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Without to smallest doubt shadow, in this point, or be after the ore to be totally benefitted and ready for the commercialization it is that it begins the saga of the Iron ore.


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Moegas

Silo-1

Silo-2Navio

ShiploadPileStock

50 meters

200 meters

200 meters

60 meters

Shipment flowchart

The composition when arriving to his destiny, unloads the wagons for the inferior part of the same ones, in 5 hours in a moega, equipped with a belt carrier with 60 meters of extension that it directs the ore until the Silo-1. Beginning the Port phase of the Logistics.

Of the Silo 1 the ore travels more 200 meters of distance to the ore pile which stays to open sky, forming the ore Lung, located in the retroporto, for the shipment of the ship


Of the ore pile the same is carried, with the aid of a foot carregadeira in a new moega to carry the mat carrier that will address the ore until the Silo 2, and this feeds a new belt carrier for more 60 meters until reaching the shiploader, concluding like this the shipment of the ship

Seqüência de montagem e elevação do shiploadConceitos

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