(in Russian – ГОСТ 10274-79 Графит для производства электроугольных изделий. Технические условия (взамен ГОСТ 10274-72)).

This standard applies to natural graphite obtained by beneficiation of graphite ores and used for the production of electric coal products.

Graphite, depending on the deposit, is produced in the following grades and types:
– Zavalyevskoe field (Ukraine, Kirovograd region) – EUZ-M low ash (ЭУЗ-М), EUZ-II (ЭУЗ-II), EUZ-III (ЭУЗ-III);
– Taiginskoye field (Russia, Chelyabinsk region) – EUT-I (ЭУТ-I), EUT-II (ЭУТ-II), EUT-III (ЭУТ-III);
– Noginskoye field (Russia, Siberia) – EUN (ЭУН).

Graphite EUZ-M low ash (ЭУЗ-М)

Ash content, %, not more than = 0.5
Sulfur content (S), %, not more than = 0.1
Iron content (Fe), %, not more than = 0.15
Moisture content, %, not more than = 0.5
Specific surface, m2 / g, within = not standardized
The release of volatile substances, including from flotation reagents, %, not more than = 0.5
Grinding fineness:
– The residue on the sieve No. 0071, %, not more than = 5
– Pass through the sieve No. 0045, % = 75 – 90

Graphite EUZ-II (ЭУЗ-II)

Ash content, %, not more than = 5
Sulfur content (S), %, not more than = 0.2
Iron content (Fe), %, not more than = 1
Moisture content, %, not more than = 0.5
Specific surface, m2 / g, within = not standardized
The release of volatile substances, including from flotation reagents, %, not more than = 0.9
Grinding fineness:
– The residue on the sieve No. 0071, %, not more than = 3
– Pass through the sieve No. 0045, % = 75 – 90

Graphite EUZ-III (ЭУЗ-III)

Ash content, %, not more than = 7
Sulfur content (S), %, not more than = 0.2
Iron content (Fe), %, not more than = 1
Moisture content, %, not more than = 0.5
Specific surface, m2 / g, within = not standardized
The release of volatile substances, including from flotation reagents, %, not more than = 0.9
Grinding fineness:
– The residue on the sieve No. 0071, %, not more than = 3
– Pass through the sieve No. 0045, % = 75 – 90