The result shows that the carbocoal produced by modified lignite under low temperature pyrolysis is a good raw material for preparing sulphonated coal; The quality of raw materials and the temperature are the most important factors affecting the products.

• 结果表明：褐煤低温热解改质后的半焦是生产磺化煤的优质原料，其原料性质和磺化温度是磺化煤质量的重要的影响因素。