GB/T 14849.2-1993
Replaced
GB/T 6730.71-2014
Active
National standards
GB/T 6730.71-2014 Iron ores—Determination of acid-soluble iron(Ⅱ) content—Titrimetric method
GB/T 6730.71-2014 Iron ores—Determination of acid-soluble iron(Ⅱ) content—Titrimetric method
Basic Information
Standard Code:
GB/T 6730.71-2014
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Iron ore
ICS Name:
Iron ore
Publish Date:
2014-06-09
Implement Date:
2015-01-01
Pages:
10 pages
Scope
This part of GB/T 6730 specifies the determination of ferrous content by titration method.
This part is applicable to the determination of ferrous content in natural and processed iron ores, with a determination range (mass fraction) of 0.2% to 28.0%.
This method is only suitable for the reduction test of ores specified in GB/T 24515 or GB/T 24189, and is not suitable for ores with a sulfur content greater than 0.3% or a free carbon content greater than 5.0%. Experiments show that, as long as the accuracy requirements of the reduction test method are met, the acid-insoluble residue can be ignored.
Development Information
Same series standard
Referenced Standards
ISO 4791-1
GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results—Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods
GB/T 6730.1-1986 Methods for chemical analysis of iron ores—Preparation of predried test samples for chemical analysis
GB/T 6730.1-2016 Iron ores—Preparation of predried test samples for chemical analysis
GB/T 8170-1987 Rules for rounding off of numberical values
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 10322.1-2000 Iron ores—Sampling and sample preparation procedures
GB/T 10322.1-2014 Iron ores—Sampling and sample preparation procedures
GB/T 10322.1-2023 Iron ores—Sampling and sample preparation procedures
GB/T 12805-1991 Laboratory glassware—Burettes
GB/T 12805-2011 Laboratory glassware—Burettes
GB/T 12806-1991 Laboratory glassware—One-mark volumetric flasks
GB/T 12806-2011 Laboratory glassware—One-mark volumetric flasks
GB/T 12808-1991 Laboratory glassware—One-mark pipettes
GB/T 12808-2015 Laboratory glassware—One mark pipettes
GB/T 24189-2009 Iron ores for blast furnace feedstocks—Determination of the reducibility by the final degree of reduction index
GB/T 24189-2024 Iron ores for blast furnace feedstocks—Determination of the reducibility by the final degree of reduction index
GB/T 24515-2009 Iron ores for blast furnace feedstocks—Determination of the reducibility by the rate of reduction index
Adopt standards
ISO 9035:1989
Related Standards
GB/T 10322.1-2000
Replaced
GB/T 10322.1-2000 Iron ores—Sampling and sample preparation procedures
GB/T 10322.2-2000
Active
GB/T 10322.2-2000 Iron ores—Experimental methods for evaluation of quality variation
GB/T 10322.3-2000
Replaced
GB/T 10322.3-2000 Iron ores—Experimental methods for checking the precision of sampling
GB/T 10322.4-2000
Replaced
GB/T 10322.4-2000 Iron ores—Experimental methods for checking the bias of sampling
GB/T 10322.5-2000
Replaced