| Key Data Set Information | |
| Location | CL |
| Reference year | 2015 |
| Name |
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| Classification |
Class name
:
Hierarchy level
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| General comment on data set | Este dataset describe la producción de áridos gruesos, generalmente utilizada en materiales de construcción, a partir de canteras abiertas de grava. La producción de áridos gruesos comprende la extracción de material pétreo, el chancado, harneado, selección y acopio. La extracción de pozos y canteras es realizada por un proceso de minería “tradicional”, con perforaciones, explosivos y maquinarias de remoción de tierra. La extracción de pozos atiende a casi 70% de la demanda de áridos en la Región Metropolitana (RM). La extracción de los áridos gruesos por cantera es hecha por explosivos y maquinaria a diésel. Los bloques de piedra son llevados a la planta de chancado por camiones. El chancado y selección es realizado por una serie de chancadoras y tamices vibratorios conectados por cintas transportadoras. Toda la maquinaria para el procesamiento es eléctrica. No incluye lavado. A pesar de que tamaños más pequeños requieren más energía, no es posible hacer la distinción por falta de datos detallados. El proceso termina con el acopio y el cargamento de los camiones para entrega, pero no la entrega en sí. Los datos de inventario del dataset de áridos gruesos obtenidos de la extracción y producción de áridos por cantera fueron generados en el proyecto ECOBASE. |
| Copyright | Yes |
| Quantitative reference | |
| Reference flow(s) |
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| Time representativeness | |
| Data set valid until | 2023 |
| Time representativeness description | The time period is set to the year 2015-2016 as the data were collected in the years of 2015 and 2016 |
| Technological representativeness | |
| Technology description including background system | Current technology for crushed gravel production in Brazil. |
| LCI method and allocation | |
| Type of data set | Unit process, black box |
| LCI Method Principle | Other |
| Data sources, treatment and representativeness | |
| Sampling procedure | with these managers. Data represent 01 year of quarry operation (2015 or 2016). Unit flows were calculated for each quarry, by dividing the amounts of inputs and outputs by the total gravel production in mass, regardless of gravel size (gravel size was not considered due to lack of detailed data). The unit flows of the dataset are the simple average of the unit flows of each quarry - as the sample is low, a weighted average could lead to a wrong estimate. Land use parameters are based on information from the years 2015 and 2016. Infrastructure data was estimated based on crushers and sieves specifications and on aerial pictures of one quarry. Particulate emission was modelled using emission factors for crushed stone processing developed by US-EPA - those factors take into account processing but do not consider the extraction of stone by blasting, due to poor-quality test data for the last process and thus, particulate matter emission is underestimated. Water emission (evaporation) was modelled considering an evaporation rate of 100% of the water used for dust control (Vionnet et al. 2012). Basic uncertainty was estimated by the variation between the single values of each quarry (not standard uncertainty values, except for specific flows) and additional uncertainty was estimated using Pedigree scores. The amount of the exchanges were calculated considering the average of the sample. No conversion to the geometric mean of the lognormal distribution was done, for consistency reasons with other ecoinvent datasets. |
| Completeness | |
| Completeness of product model | No statement |
| Data generator | |
| Data set generator / modeller | |
| Data entry by | |
| Time stamp (last saved) | 2025-01-28T16:17:41.944000-03:00 |
| Data set format(s) | |
| Data entry by | |
| Publication and ownership | |
| UUID | fba6e230-581d-4872-a525-0531aedcf48f |
| Date of last revision | 2024-12-03T09:39:34.976000-03:00 |
| Data set version | 00.00.007 |
| Unchanged re-publication of | |
| Copyright | Yes |
Inputs
| Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount |
|---|---|---|---|---|---|---|---|
| Product flow | D:Electricity, gas, steam and air conditioning supply / 35:Electricity, gas, steam and air conditioning supply / 351:Electric power generation, transmission and distribution / 3510:Electric power generation, transmission and distribution | 0.01872 MJ | 0.01872 MJ | ||||
| Product flow | E:Water supply; sewerage, waste management and remediation activities / 36:Water collection, treatment and supply / 360:Water collection, treatment and supply / 3600:Water collection, treatment and supply | 0.063985338 kg | 0.063985338 kg | ||||
| Product flow | F:Construction / 43:Specialized construction activities / 431:Demolition and site preparation / 4312:Site preparation | 0.0515 MJ | 0.0515 MJ | ||||
| Product flow | C:Manufacturing / 19:Manufacture of coke and refined petroleum products / 192:Manufacture of refined petroleum products / 1920:Manufacture of refined petroleum products | 1.57247E-6 kg | 1.57247E-6 kg | ||||
| Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 1.382161114 kg | 1.382161114 kg | ||||
| Product flow | E:Water supply; sewerage, waste management and remediation activities / 39:Remediation activities and other waste management services / 390:Remediation activities and other waste management services / 3900:Remediation activities and other waste management services | 1.27E-6 m2 | 1.27E-6 m2 | ||||
| Product flow | C:Manufacturing / 28:Manufacture of machinery and equipment n.e.c. / 282:Manufacture of special-purpose machinery / 2824:Manufacture of machinery for mining, quarrying and construction | 9.50993E-5 kg | 9.50993E-5 kg |
Outputs
| Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount |
|---|---|---|---|---|---|---|---|
| Product flow | B:Mining and quarrying / 08:Other mining and quarrying / 081:Quarrying of stone, sand and clay / 0810:Quarrying of stone, sand and clay | CL | 1.0 kg | 1.0 kg | |||
| Waste flow | E:Water supply; sewerage, waste management and remediation activities / 38:Waste collection, treatment and disposal activities; materials recovery / 382:Waste treatment and disposal / 3821:Treatment and disposal of non-hazardous waste | 0.0475 kg | 0.0475 kg |