Method for evaluating thermoplasticity of coking coal with strong caking property

• Main Authors: ZHANG QIFENG, SUN WEIZHOU, LIU QUAN, YU GUOPU, HU DESHENG
• Format: Patent
• Language: Chinese; English
• Published: 30.12.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a thermoplasticity evaluation method for coking coal with strong cohesiveness, which comprises the following steps: 1) sample preparation: crushing a coal sample to be detected, and carrying out vitrinite enrichment; (2) preparing coke blocks, namely mixing the crushed and vitrinite-enriched coal sample to be detected with special anthracite for caking index, and carrying out a carbonization test; 3) acquiring a microscopic image, and shooting a focal block section under a polarizing microscope; and 4) image identification and calculation: respectively identifying and marking a background, anthracite and coal to be detected on the image, and calculating and comparing an interface binding index of each effective anthracite particle and surrounding active matters. According to the method, the thermoplasticity of the colloid is represented by indirectly measuring the ductility of the colloid. 本发明公开了一种强粘结性炼焦煤的热塑性评价方法，包括以下步骤：1)样品制备，将待测煤样破碎，进行镜质组富集；2)焦块制备，取破碎与镜质组富集后的待测煤样，与粘结指数专用无烟煤混合后，进行炭化试验