中文摘要：

生物质成型燃料因具有清洁、可再生等特点，近年来发展迅速，对其成型机理的研究也日趋深入。本文主要介绍成型过程中粒子间“固体桥”结合方式、木质素热转变特性及黏结作用、原料组分、成型参数等方面的研究现状，提出混配成型技术、原料热转变特性、木质素结构及种类的影响、“固体桥”结构的构建条件及微观形貌、官能团和化学键的变化规律应是成型机理研究的主要方向，为生物质成型机理的深入研究提供参考。

英文摘要：

Biomass molding fuel has developed rapidly in recent years due to clean and renewable characteristics,and the study of its compression mechanism is also increasingly intensive.In this review,the research situation of“solid bridge”structure between particles,lignin heat transformation characteristics and bonding function,raw material composition,processing parameters in the process of biomass molding were summarized.The mixed molding technology,raw material heat transformation characteristics,the influence of lignin structure and types,the building condition and morphology of“solid bridge”,the structure of functional groups and chemical bond were put forward as main directions for the compression mechanism study in the future.This work may shed some light on the further investigation of biomass molding fuel compression mechanism.