GB/T 13840-1992
Abolished
GB/T 6150.12-2023
Active
National standards
GB/T 6150.12-2023 Methods for chemical analysis of tungsten concentrates—Part 12:Determination of silicon dioxide content—Silicomolybdenum blue spectrophotometry and gravimetry
GB/T 6150.12-2023 Methods for chemical analysis of tungsten concentrates—Part 12:Determination of silicon dioxide content—Silicomolybdenum blue spectrophotometry and gravimetry
Price:
$ 54
Basic Information
Standard Code:
GB/T 6150.12-2023
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for rare metals and their alloys
ICS Name:
Other non-ferrous metals and their alloys
Publish Date:
2023-08-06
Implement Date:
2024-03-01
Pages:
12 pages
Scope
This document specifies the method for determining the silica content in tungsten concentrate.
This document is applicable to the determination of silica content in tungsten concentrate and includes two methods (Method I: Silicon Molybdenum Blue Spectrophotometry; Method II: Weight Method). The determination range (mass fraction) of Method I is 0.50% to 10.00%; the determination range (mass fraction) of Method II is 3.00% to 10.00%. The overlapping part of the determination range shall be arbitrated by Method I.
Development Information
Same series standard
GB/T 6150.1-2023 Methods for chemical analysis of tungsten concentrates—Part 1:Determination of tungsten trioxide content—Ammonium tungstate igniting gravimetric method
GB/T 6150.3-2023 Methods for chemical analysis of tungsten concentrates—Part 3:Determination of phosphorus content—The phosphorus molybdenum yellow spectrophotometry and inductively coupled plasma atomic emission spectrometry
GB/T 6150.4-2023 Methods for chemical analysis of tungsten concentrates—Part 4:Determination of sulfur content—High frequency-infrared absorption method and combustion-iodometric method
GB/T 6150.6-2023 Methods for chemical analysis of tungsten concentrates—Part 6:Determination of moisture content—Gravimetric method
GB/T 6150.8-2023 Methods for chemical analysis of tungsten concentrates—Part 8:Determination of molybdenum content—Thiocyante spectrophotometry method
GB/T 6150.10-2023 Methods for chemical analysis of tungsten concentrates—Part 10:Determination of lead content—Hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry
GB/T 6150.15-2023 Methods for chemical analysis of tungsten concentrates—Part 15:Determination of bismuth content—Hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry
GB/T 6150.18-2023 Methods for chemical analysis of tungsten concentrates—Part 18:Determination of barium content—Inductively coupled plasma atomic emission spectrometry
Replace the following standards
Referenced Standards
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 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 17433-1998 Foundation terms for chemical analysis of metallurgical products
GB/T 17433-2014 Foundation terms for chemical analysis of metallurgical products
Related Standards
GB/T 15677-1995
Replaced
GB/T 15677-1995 Lanthanum metal
GB/T 3136-1995
abolished_transferred
GB/T 3136-1995 Tantalum powders
GB/T 3463-1995
Abolished
GB/T 3463-1995 Tantalum wires
GB/T 3628-1995
Replaced
GB/T 3628-1995 Tantalum and tantalum alloy foils
GB/T 16476-1996
Replaced