Description: technologyComment of barite production (CA-QC, RER, RoW): Barite is mined both in open pit and underground mines. About 60 to 120 kg of Barite can be yielded from one cubic meter of ore. The ore is transported via lorry (usually less than 5km) to a washing installation. Subsequently, it is separated from the water and grinded wet or dry. Between 65% and 85% of barite contained in the ore can be extracted. This dataset includes resource extraction and processing of the material. technologyComment of niobium mine operation and beneficiation, from pyrochlore ore (BR, RoW): Open-pit mining is applied and hydraulic excavators are used to extract the ore with different grades, which is transported to stockpiles awaiting homogenization through earth-moving equipment in order to attain the same concentration. Conveyor belts (3.5 km) are utilized to transport the homogenized ore to the concentration unit. Initially, the ore passes through a jaw crusher and moves to the ball mills, where the pyrochlore grains (1 mm average diameter) are reduced to diameters less than 0.104 mm. In the ball mills, recycled water is added in order to i) granulate the concentrate and ii) remove the gas from the sintering unit. The granulated ore undergoes i) magnetic separation, where magnetite is removed and is sold as a coproduct and ii) desliming in order to remove fractions smaller than 5μm by utilizing cyclones. Then the ore enters the flotation process - last stage of the beneficiation process – where the pyrochlore particles come into contact with flotation chemicals (hydrochloric & fluorosilic acid, triethylamene and lime), thereby removing the solid fractions and producing pyrochlore concentrate and barite as a coproduct which is also sold. The produced concentrate contains 55% Nb2O5 and 11% water and moves to the sintering unit, via tubes or is transported in bags while the separated and unused minerals enter the tailings dam. In the sintering unit, the pyrochlore concentrate undergoes pelletizing, sintering, crushing and classification. These units not only accumulate the material but are also responsible for removing sulfur and water from the concentrate. Then the concentrate enters the dephosphorization unit, where phosphorus and lead are removed from the concentrate. The removal of sulphur and phosphorus have to be executed because of the local pyrochlore ore composition. Then the concentrate undergoes a carbothermic reduction by using charcoal and petroleum coke, producing a refined concentrate, 63% Nb2O5 and tailings with high lead content that are disposed in the tailings dam again.
Types:
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Comment: This is a market activity. Each market represents the consumption mix of a product in a given geography, connecting suppliers with consumers of the same product in the same geographical area. Markets group the producers and also the imports of the product (if relevant) within the same geographical area. They also account for transport to the consumer and for the losses during that process, when relevant. This is the market for 'barite', in the Global geography. Transport from producers to consumers of this product in the geography covered by the market is included. This market is supplied by the following activities with the given share: barite production, CA-QC: 0.000898678414096916 barite production, RER: 0.0198477973568282 niobium mine operation and beneficiation, from pyrochlore ore, BR: 0.0447385926091339 barite production, RoW: 0.928596114753987 niobium mine operation and beneficiation, from pyrochlore ore, RoW: 0.00591881686595352 generalComment of barite production (CA-QC, RER, RoW): This dataset represents the production of 1 kg of barite. Barite is the mineralogical name for barium sulfate. Barite refers here to the first marketable product, which includes crude barite that usually has undergone simple beneficiation processes, such as jigging, tabling, and washing, or more complex processes, such as flotation, heavy-media separation, or magnetic separation. Most barite ores require some upgrading to minimum commercial purity or density levels. Barite is primarily used as a weighting agent in oil and gas well drilling fluids or 'mud'. The inventory is based on literature data and estimations. References: Jungbluth N. (2007) Erdöl. In: Sachbilanzen von Energiesystemen: Grundlagen für den ökologischen Vergleich von Energiesystemen und den Einbezug von Energiesystemen in Ökobilanzen für die Schweiz (ed. Dones R.). Swiss Centre for Life Cycle Inventories, Dübendorf, CH. Bonel K. A., British Geological Survey (2005) Barytes generalComment of niobium mine operation and beneficiation, from pyrochlore ore (RoW): This dataset has been copied from an original dataset covering the geography of BR. The data is assumed to be also representative of the global situation, since Brazil produces more than 87% of niobium concentrates and pyrochlore is the leading mineral for the production of niobium (Source: https://prd-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/atoms/files/myb1-2017-niobi.pdf). This dataset refers to the production of 1 kg of (refined) pyrochlore concentrate (63% beneficiated), as a result of the mining and beneficiation activities in Araxa, Brazil. generalComment of niobium mine operation and beneficiation, from pyrochlore ore (BR): This dataset refers to the production of 1 kg of (refined) pyrochlore concentrate (63% beneficiated), as a result of the mining and beneficiation activities in Araxa, Brazil.
Origin: /Bund/UBA/ProBas
Tags: Bleigehalt ? Bariumsulfat ? Sinterung ? Zyklon ? Erdöl ? Getreide ? Holzkohle ? Niob ? Wehr ? Granulat ? Koks ? Pelletierung ? Phosphor ? Raffination ? Pflanzensamen ? Blei ? Schwefel ? Talsperre ? Petroleum ? Damm ? Hydraulik ? Kalkung ? Lastkraftfahrzeug ? Rohstoffgewinnung ? Tagebau ? U-Bahn ? Waschanlage ? Gasförmiger Stoff ? Magnetabscheidung ? Flotation ? Mühle ? Nebenprodukt ? Chemikalien ? Bergematerial ? Wasser ? Erz ? Mineral ? Partikel ? Klassifikation ? Mining of metal ores ? Mining of other non-ferrous metal ores ? Mining and quarrying ? Mining of non-ferrous metal ores ?
License: unbekannt
Language: Deutsch
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