Slide 1: Welcome to Mineração Paragominas
WELCOME TO MINERAÇÃO PARAGOMINAS José Flávio Alves - General Manager of Operational Support November 7, 2012
Slide 2: What is bauxite?
What is bauxite? • Rock composed mainly of aluminum oxide and aluminum hydroxide minerals • Other materials: iron hydroxides, clay, silt and free silica • 3 main mineralogy’s 1. Gibbsite Al(OH)3 2. Boehmite AlO(OH) 3. Diaspore AlO(OH) (2)
Slide 3: Bauxite - where do we find the different mineralogy's?
Bauxite - where do we find the different mineralogy's? Diaspore AlO(OH) China and Russia High Pressure and Temperature Bayer Process at Higher Cost, Gibbsite Al(OH)3 250 Celsius; Paragominas and Trombetas Low Pressure and Temperature Bayer Process, 145 Celsius Boehmite AlO(OH) Austrália and Guinea H
Slide 4: Bauxite mining in Paragominas
Bauxite mining in Paragominas (4)
Slide 5: Paragominas history and milestones
1972 1980 -1990 2002 2007 2008 2011 2012 Consecutive production records Hydro acquires Paragominas Mining Beneficiation plant - Expansion Start-up operation Beginning of the Paragominas Bauxite Project More exploration and new studies Beginning of geological research (5)
Slide 6: Bauxite mining in Paragominas
Bauxite mining in Paragominas • Exploration, geological survey • Deforestation and Use of Wood • Top Soil Removal & Reuse, Overburden Removal: Yellow Clay, Nodular Bauxite & Ferruginous Laterite • Bauxite Ripping • Bauxite Excavation & Transportation • Recovery of Terrain and Reforestation • Infrast
Slide 7: Bauxite mining in Paragominas
Bauxite mining in Paragominas • Mines: Two Mines in One Plateau called M3 with 9,9 Mtpy capacity • Expansion: A Third Mine could be opened in Plateau M5 with 4,85 Mtpy capacity • Mine Planing: Short, Medium & Long Term (LOMP) • Mining Concept: Conventional (Smaller Equipment's and Manpower Intensive
Slide 8: Mine process
Mine process Vegetation removal 1 Vegetation removal Removal and stocking of the timber Top soil removal 2 Stripping Conventional mining method Stripping 3 Ripping – Loading - Transport Grading the box Ripping or excavation using the surface miner Mining method using the surface miner Loading 4 Baux
Slide 9: Equipments and training
Equipments and training Compactor roll Motor grader Hydraulic Excavator 18m³ Auxiliary truck - Dolly Hydraulic Excavator 4,5m³ Off road truck D11 Bulldozer Righway truck Surface Miner Tire Dozer Water truck (9)
Slide 10: From conventional to continuous mining?
From conventional to continuous mining? • Traditional technology • New Technologies • Smaller equipment • Surface Miner (bauxite excavation) • More manpower intensive • BWE & XPS (overburden) • Lower productivity • LDCB (bauxite transportation) • Higher cost • Bigger Trucks (short distance • Actual
Slide 11: Surface mining
Surface mining The Surface Mining SM 2500 has replaced the operations performed by bulldozers, hydraulic excavators and graders Beyond this, it has almost the double of the hydraulic excavator productivity and can work with bigger trucks (60m³ a 80m³) reducing the mining costs. The ore control proce
Slide 12: Bauxite physical beneficiation
Bauxite physical beneficiation • Concept: remove clay from the ore (30 to 40%) & grinding the final product to pipeline transportation (100% below 0,3 mm); • Economics: improve the available alumina from 38-40% to 47-48% and reduce reactive sílica from 9-10% to 4,5-5%; • Grinding (coarse fraction):
Slide 13: Bauxite physical beneficiation
Bauxite physical beneficiation • Actual installations: two beneficiation plants (each with capacity of 4,85 mtpy); • Relevant points • Water • Electric energy • Tailings disposal system, located at valley • Structure: four dikes to disposal tailings, one dike to preserve natural water, one dike to r
Slide 14: Pipeline
Pipeline • Concept: Transport slurry to refineries with 50% solids, transport capacity 14,85 Mtpy • Pump Stations • PS1 at M3 with 6 pumps • PS2 at Tomé-Açú with 6 pumps (being Installed and start-up scheduled to 2013/2014) • Tanks and valves at Barcarena: receive the slurry and adjust solids conten
Slide 15: Competent and enthusiastic local employees
Competent and enthusiastic local employees (15)
Slide 16: We are improving but need to stabilize
We are improving but need to stabilize 10.000 kt Yearly Production 9.900kt 8.000 kt 9.200– 9.300 6.000 kt 8.150 4.000 kt 7.524 6.203 2.000 kt 4.403 1.891 0 kt 2007_R 2008_R 2009_R 2010_R 2011_R 2012_P (16)
Slide 17: Steps to leverage the business value
Steps to leverage the business value • Economy of scale: pursue gains • Housekeeping: Hydro Way • Product: improve the quality • BABS – Bauxite and Alumina Business System • Reduce costs: mining, beneficiation, pipeline and • Certifications: ISO 9 000 and dewatering 14 000, OHSAS 8 000 • Project MAI
Slide 18: www.hydro.com
www.hydro.com HYDRO