Coking coal blending method involving low-proportion prime coking coal

• Main Authors: PENG YONGGEN, HU XIAOLONG, XIAO FUCHUN, ZHOU YUNHUA, JIANG YOUYUAN, LUO ZHIPING
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2016
• 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 discloses a coking coal blending method involving low-proportion prime coking coal. The coking coal comprises prime coking coal, fat coal, one third of coking coal, lean coal and gas coal, wherein the single coking M10 index of the prime coking coal is less than 9%, the CSR index is greater than 60%, the caking index G value of the fat coal is greater than 85, the dry ash-free basis volatile matter Vdaf is less than 32%, the maximum thickness Y value of the colloid layer is greater than 25mm, the single coking CSR index is greater than 45%, the caking index G value of the one third of coking coal is greater than 80, the single coking CSR index is greater than 45%, the caking index G value of the lean coal is greater than 20, and the caking index G value of the gas coal is greater than 55. The method is characterized in that the coking coal comprises the following components in percentage by weight: 15-25% of prime coking coal, 20-25% of fat coal, 35-42% of one third of coking coal, 13-18% of lea