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Process Data set: cement production;cement, ordinary portland cement, 42.5MPa (en) en zh

Key Data Set Information
Location BJ-CN
Name
cement production;cement, ordinary portland cement, 42.5MPa
Use advice for data set When using this data set for Life Cycle Assessment, it is important to maintain the defined system boundaries, which include the direct production process within the cement plant from raw material entry, preparation, and grinding, to the homogenization and storage of cement. Exclude consideration of raw material extraction, processing, and transportation from the analysis unless these actions take place within the defined geographical scope of the study, which is the Beijing area. Additionally, for studies requiring geographical specificity, consider the relevance of the data strictly within the context of the Beijing area cement production practices.
Technical purpose of product or process This data set represents the environmental loading of the production of ordinary Portland cement with a strength grade of 42.5MPa. Such cement is widely used in general construction works, including commercial and residential buildings, bridges, and roads, providing the necessary structural integrity and durability for a range of construction projects.
Classification
Class name : Hierarchy level
  • ILCD: Unit processes / Materials production / Other mineralic materials
General comment on data set The environmental loading of cement production under usual cement production.
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
Technological representativeness
Mathematical model
Model description Functional unit definition: Take the performance of 1t 42.5 ordinary Portland cement as a functional unit. The system boundary is: from raw material entering the factory, raw material pretreatment, raw meal grinding, raw meal calcination, clinker grinding, until cement homogenization and storage, that is, the direct production process of cement in the entire cement plant, excluding raw material mining, Processing and transportation process. The geographical scope of the study is the Beijing area.
LCI method and allocation
Type of data set Unit process, black box
Deviation from LCI method principle / explanations None
Deviation from modelling constants / explanations None
Data sources, treatment and representativeness
Deviation from data cut-off and completeness principles / explanations None
Deviation from data selection and combination principles / explanations None
Deviation from data treatment and extrapolations principles / explanations None
Data source(s) used for this data set
Completeness
Completeness of product model No statement
Validation
Type of review
Dependent internal review
Reviewer name and institution
Data generator
Data set generator / modeller
Data entry by
Time stamp (last saved) 2024-03-19T21:18:09+08:00
Publication and ownership
UUID 297fc5af-6565-4464-b4c6-61dafb8f93d8
Date of last revision 2024-04-20T14:41:27.440850+08:00
Data set version 00.01.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=297fc5af-6565-4464-b4c6-61dafb8f93d8&version=01.00.000&stock=TianGong
Owner of data set
Copyright No
License type Free of charge for all users and uses

Inputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Materials production / Other mineralic materials 1318.5 kg1318.5 kg
General comment Limestone
Elementary flow
Resources / Resources from ground / Non-renewable material resources from ground 94.5 kg94.5 kg
General comment Clay-based raw materials
Product flow
Materials production / Metals and semimetals 27.0 kg27.0 kg
General comment Iron corrective raw materials
Product flow
Materials production / Other mineralic materials 60.0 kg60.0 kg
General comment The proportion of gypsum is 5.5%
Product flow
Materials production / Other mineralic materials 200.0 kg200.0 kg
General comment Mixed material
Elementary flow
Resources / Resources from ground / Non-renewable energy resources from ground 120.0 MJ120.0 MJ
General comment Coal consumption kg
Product flow
Energy carriers and technologies / Electricity 363.6 MJ363.6 MJ
General comment Power consumption

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 1.88 kg1.88 kg
General comment NOx
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 0.004 kg0.004 kg
General comment SO2
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 12.0 kg12.0 kg
General comment Dust, with an unspecified particle size, is treated as PM > 10 micrometers in diameter.
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 772.0 kg772.0 kg
General comment CO2. Since the volume of CO2 is generally not detected, the emissions are calculated according to the following formulas. CO2 generates the combustion of fossil energy such as fuel, coal-fired and other fossils, as well as limestone decomposition in cement production raw materials. (1) CO2 emissions of fossil energy combustion are calculated as follows: e = 3.67fqka. E is the emissions of CO2, KG; F is the consumption of fuel, kg; Q is fuel thermal mass, mj/kg; K is the carbon emissions coefficient of fuel; A is the carbon oxidation rate of fuel. (2) During the production of cement, the chemical reactions of raw materials limestone generate a large number of CO2 chemical reactions: CACO3 → Cao+CO2 ↑. The percentage of 1kg of limestone CAO is calculated at 48%. In the end, the estimated formula for CO2 emissions is: CO2 emissions = limestone consumption*0.38+e = 271kg+501kg = 772kg.
Product flow
Materials production / Other mineralic materials 1000.0 kg1000.0 kg
General comment 42.5 Ordinary silicate cement