Method for preparing metallurgical coke

• Main Authors: LI HONG, WANG XU, WU JI, PANG KELIANG, DONG GANG, LIU DONGJIE, ZHU QINGMIAO, GAN XIUSHI, WANG CHAO, DU QINGHAI
• Format: Patent
• Language: Chinese; English
• Published: 21.02.2020
• Subjects: CHEMISTRY; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; FUELS; LUBRICANTS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention relates to a method for preparing metallurgical coke. The method comprises the following steps: 1) taking blended coal, waste resin and dry quenching dedusting powder as raw materials; 2) intensively recovering the waste resin, and grinding the waste resin to make the particle size less than 3 mm; 3) fully mixing the waste resin with the dry quenching dedusting powder according to amass ratio of 1:1 to 1:5, and carrying out matching pelletizing to make the ball diameter be 1-3 cm; 4) respectively crushing and mixing various coal types in the blended coal, wherein the mass proportion of the average maximum reflectivity, in the interval range of 1.05-1.35%, of vitrinite in the blended coal is not lower than 45%; and 5) mixing the mixed balls of the waste resin and the dry quenching powder with the blended coal, and coking the obtained mixture in a coke oven, wherein the bending mass percentage of the mixed balls is 1-3%. The method achieves recycling of carbon-containing solid wastes of iron and s