Light in weight. Limitless in potential.

Transformation sequence

1. 01

   Mine Face Planning

   Deposit information is transformed into an extraction sequence. Accesses, material movements, and work areas are coordinated with the expected ore quality. Scheduling considers terrain conditions and fleet availability.

2. 02

   Extraction and Preparation

   Excavation, loading, and hauling equipment move bauxite to preparation points. When the route requires it, crushing and classification condition the material for subsequent handling. Feed control prevents preparation from depending on irregular deliveries.

3. 03

   Stockpiling and Transfer

   Yards allow for organizing stocks, identifying materials, and preparing blends. Dispatch to the refinery is synchronized with conveyors and terminals. In the context of Guayana, the river connection is part of the logistical analysis between mine and refining center.

Transformation sequence

1. 01

   Preparation and Digestion

   Bauxite is prepared and brought into contact with a caustic solution in the digestion units. The process aims to dissolve the usable aluminum compounds. The mineral's composition and coordination between feed, heat, and liquor circulation influence performance.

2. 02

   Clarification and Precipitation

   Solid-liquid separation removes residue from the process liquor. Subsequently, the formation of aluminum hydroxide crystals is promoted through the precipitation stage. Thickening, filtration, classification, and recirculation link these operations within the refining circuit.

3. 03

   Calcination and Storage

   The hydrate undergoes thermal treatment to obtain alumina. The product is cooled, transported, and stored in an organized manner for delivery to reduction. The operation must preserve material identification and limit contamination during transfers.

Transformation sequence

1. 01

   Feed Preparation

   Alumina is received, stored, and distributed to the cells. Dosing and handling systems must sustain an organized feed. Anodes and other process materials are prepared according to the employed technology's design.

2. 02

   Reduction in Cells

   The electric current enables the electrochemical transformation of alumina dissolved in the bath. Cell control monitors the electrical and thermal behavior of the system. The operation coordinates feed, anode condition, and maintenance of current-conducting elements.

3. 03

   Metal Tapping and Transfer

   Liquid aluminum is tapped from the cells and transferred to the casthouse. Handling of crucibles and transport equipment links the potroom with the casting schedule, while metal identification accompanies its transfer.

Transformation sequence

1. 01

   Metal Reception and Preparation

   Holding and melting furnaces organize the metal supply for the campaign. Preparation considers the required composition, identification of charges, and metal treatment according to the intended application.

2. 02

   Casting by Product Family

   Line selection depends on the format: ingots for remelting, billets for extrusion, or slabs for rolling. Formation and cooling control aims to obtain a geometry and condition compatible with subsequent processing.

3. 03

   Conditioning and Identification

   Depending on the product and route, pieces may require cutting, surface conditioning, or homogenization. Inspection, lot identification, and storage are organized. These operations preserve the relationship between composition, campaign, and destination.

Transformation sequence

1. 01

   Semi-finished Product Preparation

   The material is identified and conditioned for the chosen route. In rolling, the slab is prepared for thickness reduction; in extrusion, the billet is assigned to a die and a work sequence. The initial condition influences the result.

2. 02

   Rolling or Extrusion

   Rolling mills progressively reduce thickness using rollers. Extrusion shapes the metal by passing it through a die. Scheduling considers geometry, alloy behavior, and installed equipment capabilities.

3. 03

   Treatment and Finishing

   According to specification, the route may incorporate heat treatment, stretching, leveling, cutting, or coiling. Inspection confirms dimensional and surface condition before moving to fabrication, packaging, or delivery as a semi-finished product.

Transformation sequence

1. 01

   Application Definition

   Alloy, dimensions, condition, and inspection requirements are specified. Technical dialogue with the customer allows selecting the appropriate route: conductor, component, profile, foil, or input for further transformation. Availability is confirmed for each supply.

2. 02

   Fabrication and Finishing

   Depending on the line and industrial scope, cutting, machining, forming, drawing, or surface treatments may be involved. These activities require their own tools and controls. Their integration must be defined with the manufacturer or responsible partner.

3. 03

   Inspection, Packaging, and Dispatch

   Release verifies product conformity and correspondence between lot, documentation, and order. Packaging protects surfaces and geometries during handling. Dispatch is scheduled with the agreed destination and transport means.