GB/T 36144-2018Limit on element content of lead,arsenic,cadmium,mercury,fluorine and chlorine in iron ore (English PDF)

1 Scope

This Standard specifies the limit on element content of lead, arsenic, cadmium, mercury, fluorine and chlorine in iron ore, sampling, sample preparation as well as determination methods.

This Standard is applicable to natural and processed iron ore for steel smelting.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 6730.26, Iron ores - Determination of fluorine content - Thorium nitrate titrimetric method

GB/T 6730.27, Iron ores - Determination of fluorine content - Lanthanum-alizarin complexion spectrophotometric method

GB/T 6730.28, Iron ores - Determination of fluorine content - Ion-selective electrode method

GB/T 6730.42, Iron ores - Determination of lead content - Dithizone spectrophotometric method

GB/T 6730.45, Iron ores - Determination of arsenic content - Arseno-molybdenum blue spectrophotometric method after hydrogen arsenide separation

GB/T 6730.46, Iron ores - Determination of arsenic content - Arseno-molybdenum blue spectrophotometric method after the distillation separation

GB/T 6730.54, Iron ores - Determination of lead content - Flame atomic absorption spectrometric method

GB/T 6730.67, Iron ores - Determination of arsenic content - Hydride generation atomic absorption spectrometric method

GB/T 6730.69, Iron ores - Determination of fluoride and chloride content - Ion chromatography

GB/T 6730.72, Iron ores - Determination of arsenic, chromium, cadmium, lead and mercury content - Inductively coupled plasma-mass spectrometry method (ICP-MS)

GB/T 10322.1, Iron ores - Sampling and sample preparation procedures

GB/T 20565, Iron ores and direct reduced iron - Vocabulary

GB/T 31947, Iron ores - Determination of mercury content - Solid sampling and direct mercury analysis method

SN/T 2262, Determination of aluminum, arsenic, calcium, copper, magnesium, manganese, phosphorus, lead, zinc in iron ores. Inductively coupled plasma atomic emission spectrometry

SN/T 2680, Determination of arsenic mercury cadmium lead bismuth in iron ores - Atomic fluorescence spectrometric method

SN/T 2765.3, Simultaneous determination of arsenic and mercury content in iron ores. Microwave-assisted digestion-atomic fluorescence spectrometry

SN/T 2765.4, Determination of arsenic in iron ores for import and export - Part 4. Hydride generation atomic absorption spectrometric method

SN/T 3004, Determination of Mercury Content in Iron Ores. Microwave Digestion - Cold Atomic Absorption Spectrophotometry Method

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 20565 apply.

4 Requirements for limit

4.1 The content of lead in iron ore (mass fraction) is not more than 0.60%.

4.2 The content of arsenic (mass fraction) in iron ore is not more than 0.45%.

4.3 The content of cadmium (mass fraction) in iron ore is not more than 0.40%.

4.4 The content of mercury (mass fraction) in iron ore is not more than 0.05%.

4.5 The content of fluorine (mass fraction) in iron ore is not more than 4.50%. […]