GB/T 32931-2016 Technical specifications for ammonia-based flue gas desulphurization,defluorination and dedusting in aluminum electrolysis process

GB/T 535-1995 Ammonium sulphate GB/T 535-2020 Fertilizer grade ammonium sulphate GB/T 536-1988 Liquefied anhydrous ammonia GB/T 536-2017 Liquefied anhydrous ammonia GB/T 2440-2001 Urea GB/T 2440-2017 Urea GB/T 3559-2001 Ammonium bicarbonate for agricultural use GB/T 6009-2003 Anhydrous sodium sulfate for industrial use GB/T 6009-2014 Anhydrous sodium sulfate for industrial use 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 15432-1995 Ambient air—Determination of total suspended particulates—Gravimetric method YS/T 273.3-2006 Chemical analysis methods and physical properties of cryolite—Part 3:Determination of fluoride content by distillation-thorium nitrate titration YS/T 273.3-2012 Chemical analysis methods and physical properties of cryolite—Part 3:Determination of fluoride content YS/T 273.4-2006 Chemical analysis methods and physical properties of cryolite—Part 4:Determination of aluminium by the EDTA volumetric method YS/T 273.5-2006 Chemical analysis methods and physical properties of cryolite—Part 5:Determination of sodium by flame atomic absorption spectrometric method YS/T 273.3-2020 YS/T 273.3-2020 Methods for Chemical Analysis and Determination of Physical Properties of Ice-crystalline Salt - Part 3: Determination of Fluorine Content YS/T 273.4-2020 Method for Chemical Analysis of Magnesium Fluoride and Determination of Physical Properties thereof - Part 4: Determination of Aluminum Content - EDTA Titrimetric Method YS/T 273.5-2023 Ice fluorspar chemical analysis methods and physical property determination methods - Part 5: Determination of sodium content by flame atomic absorption spectrometry HJ/T 56-2000 The determination of sulfur dioxide in fixed pollution sources using iodometric method HJ/T 76-2007 Technical requirements and testing methods for continuous monitoring system of smoke gas emissions from fixed pollution sources (trial version) HJ 76-2017 The technical requirements and testing methods for continuous monitoring systems for pollutant emissions from fixed sources (SO2, NOx, particulate matter) HJ/T 76-2001 Fixed pollutant emission continuous monitoring system technical requirements and testing methods HJ 533-2009 The determination of ammonia in air and exhaust gas using Nessler's reagent spectrophotometry HJ 2001-2010 Flue gas desulfurization engineering technical specifications for ammonia method in coal-fired power plants HJ 2033-2013 Fluorine and Dust Control Engineering Technical Specification for Aluminum Electrolysis Waste Gas emissions HG/T 2225-2018 Industrial aluminum sulfate HG 2225-1991 Industrial aluminum sulfate HG/T 2225-2010 Industrial aluminum sulfate HG/T 2784-2023 HG/T 2784-2023 Industrial Ammonium Sulfite HG/T 2784-2012 Ammonium sulfite for industrial use HG/T 2785-2022 Ammonium sulfite for industrial use HG/T 2785-2012 Ammonium sulfite for industrial use HG/T 2225-2001 Industrial aluminum sulfate HG/T 2784-1996 Industrial sulfuric acid amide HG/T 2785-1996 HG/T 2785-1996 Industrial Sodium Hydrogen Sulfite Hydrogen Sulfite ammonia HJ/T 67-2001 Determination of Fluorides in Atmospheric Stationary Sources by Ion Selective Electrode Method GB/T 16157-1996 Determination of particulates and sampling methods of gaseous pollutants emitted from exhaust gas of stationary source GB 25465-2010 Emission Standard of Pollutants from Aluminium Industry