T/HNNMIA 93-2023 Highly conductive graphitized cathode carbon block for aluminum electrolysis
T/HNNMIA 93-2023 Highly conductive graphitized cathode carbon block for aluminum electrolysis
Basic Information
Scope
Main technical content: This document specifies the terms and definitions, product codes, requirements, test methods, inspection rules and markings, packaging, transportation, storage, and accompanying documents and order forms for high-conductivity graphitized cathode blocks used in aluminum electrolysis (hereinafter referred to as cathode blocks). This document applies to high-conductivity graphitized cathode blocks used in aluminum electrolysis that have undergone impregnation and secondary calcination processes. Table 3: Physical and chemical properties of cathode blocks **Model** **Conventional Performance** **Reference Performance** **Ash content (%)**, **Resistivity (μΩ.m)**, **Flexural strength (MPa)** **Compressive strength (MPa)** **Apparent density (g/cm3)** **True density (g/cm3)** **Sodium expansion rate (%)**, **Thermal expansion coefficient (300°C)** (×10-6/°C), **Young's modulus (GPa)** **Thermal conductivity (W/(m·k))**, **Not exceeding**, **Not less than**, **Not exceeding**, **Not less than** SMH-J 0.409 1028 1.68 2.19 0.3 3.3 2.8 120