50e47acc-8694-4b84-8876-15d8ce3d4462Bauxiteprimary productionconsumption mix, at plantMaterials productionOther materialsData was collected through the Aluminum Association and the International Aluminum Institute.0Dataset is valid for North America and includes North American imports of bauxite. Very little bauxite is directly mined in North America.
Brazil is the largest exporter of bauxite (accounting for approximately 33% of the total bauxite im-ports to the U.S.) followed by Guinea and Jamaica. The remaining imports come primarily from China, India, the Dominican Republic and Venezuela.Bauxite ore is the primary raw material source for the aluminum production. Aluminum is almost exclusively produced from Bauxite. This ore consists primarily of the minerals gibbsite Al(OH)3, boehmite, and diaspore AlOOH, together with minor fractions of the iron oxides goethite and hematite, the clay mineral kaolin and small amounts of TiO2. Bauxite is typically found at a depth of 0 to 600 feet beneath the earth crust, with an average depth of 80 feet. It is mined in open-pit mines by removing the overburden. The removed material is stockpiled for use in restoring the site after the bauxite has been excavated. The bauxite deposit is loosened by means of explosives, depending on its hardness and other local conditions. In some cases the bauxite is crushed in a grinding process using dust control equipment to prevent from excessive dust emission, and/or treated with water to remove impurities before it is shipped. This washing process is called beneficiation. Beneficiated bauxite will typically be dried prior to shipment to the refinery. The wastewater from washing is normally retained in a settling pond and recycled for continual use.
This bauxite mining unit process begins with the extraction and processing of the bauxite ore and it ends with the output of beneficiated bauxite to be refined in the subsequent process to produce alumina. The operations associated with this unit process include (AA, 1999; IAI, 2005):
# The extraction of bauxite rich minerals on-site,
# Beneficiation activities such as grinding, washing, screening, and drying,
# Treatment of mining site residues and waste, and
# Restoration activities such as grading, dressing, and planting.Bauxite to be used in aluminium production, or for other purposes (e.g. abrasives, etc).LCI resultAttributionalNoneAllocation - market valueAllocation - exergetic contentAllocation - massNoneAll data used in the calculation of the LCI results refer to net calorific value.None1% cut-off criteria applied for non-hazardous inputs & outputs except alloying elements which are not considered. - No cut-off criteria for hazardous products emissions (ex. PAH, PFC, BaP, etc.) - Infrastructure not included. All ancillary processes (electricity, caustic soda, etc.) included.
Cut-off rules for each unit process: Coverage of at least 95 % of mass and energy of the input and output flows, and 98 % of their environmental relevance (according to expert judgement).
For further details please see the document "GaBi Databases Modelling Principles"NoneFor details please see the document "GaBi Databases Modelling Principles"NoneFor details please see the document "GaBi Databases Modelling Principles"NoneLife Cycle Impact Assessment of aluminum Beverage CansLife Cycle Inventory Data Primary Aluminium, 200595.02006The data set represents a cradle to gate inventory. It can be used to characterise the supply chain situation of the respective commodity in a representative manner. Combination with individual unit processes using this commodity enables the generation of user-specific (product) LCAs.No statementthinkstepAAThis background LCI dataset can be used for any type of LCA studiesAAthinkstep2019-02-01T00:00:00.000ILCD format 1.1thinkstep2019-02-01T00:00:00.00000.00.001Data set finalised; entirely publishedAAtrueOtherGaBi (source code, database including extension modules and single data sets, documentation) remains property of thinkstep AG. thinkstep AG delivers GaBi licenses comprising data storage medium and manual as ordered by the customer. The license guarantees the right of use for one installation of GaBi. Further installations using the same license are not permitted. Additional licenses are only valid if the licensee holds at least one main license. Licenses are not transferable and must only be used within the licensee's organisation. Data sets may be copied for internal use. The number of copies is restricted to the number of licenses of the software system GaBi the licensee owns. The right of use is exclusively valid for the licensee. All rights reserved.BauxiteOutput1.01.00Mixed primary / secondaryUnknown derivationvaluable