GB/T 44037-2024 in English

1. Background and significance of the standard

GB/T 44037-2024 "Test method for dissolution loss rate and strength after dissolution of coke" is an important national standard for metallurgical coke used in blast furnace ironmaking. The purpose of this standard is to unify the mass loss assessment method of coke reacting with carbon dioxide at high temperature, while ensuring that the test of its mechanical strength and resistance to fragmentation is scientific and operable.

2. Comparative analysis of standard frameworks

3. Interpretation of key technical specifications

3.1 Test instrument and equipment requirements

According to the standard requirements, the instruments involved in the test include: electric furnace, reactor, I-type drum, carbon dioxide supply system, etc. Among them, the operating temperature requirement of the reactor is ≥1350°C, and the material needs to be silicon carbide or other refractory materials.

3.2 Test steps and quality control

• Sample preparation: The coke particle size is controlled between φ23mm and φ25mm to ensure representativeness.
• Reaction conditions: Heating rate 4°C/min, CO2 flow 5L/min, nitrogen is used for the initial protection stage.
• Drum test: speed 20r/min, duration 30 minutes, simulating the change of mechanical strength in actual use.

4. Implementation suggestions and precautions

4.1 Organizational guarantee for standard implementation

It is recommended that enterprises set up a special technical team to be responsible for the study of the standard, the procurement of test equipment and the training of operators. Regular internal audits and quality inspections are carried out to ensure the consistency and accuracy of test data.

4.2 Data recording and analysis

Use a unified data recording form (refer to Appendix B) to ensure the integrity and traceability of all original data. For abnormal results, the causes should be found in time and improvement measures should be taken.

4.3 Standard Update and Technology Evolution

With the development of the metallurgical industry and the advancement of technology, it is recommended to revise the standards regularly and introduce more advanced test methods and equipment to adapt to changes in market demand and technical requirements.