Coal with high inertinite content
Coal characterized by a high content of inertinite macerals represents a distinct and economically important subset of the world’s coals. These coals carry a record of past environmental conditions, pose…
Low-caking coal
Low-caking coal is a specific category of coal defined by its limited tendency to soften, swell and fuse when heated in the absence of air. Unlike coking or strongly caking…
Low-swelling coal
This article explores the characteristics, occurrence, extraction, economic role and industrial uses of low-swelling coal. Low-swelling coals form an important segment of the global coal resource base. Although they are…
Recycled coal fines fuel
This article examines the topic of recycled coal fines as a fuel: what they are, where they are found and recovered, how they are processed and used, their economic and…
Engineered coal fuel
This article examines engineered coal fuel as a category of processed and upgraded coal products used across power generation, industry and synthetic fuel production. It covers geological occurrence and mining…
Gasification-grade sub-bituminous coal
This article examines gasification-grade sub-bituminous coal: its geological characteristics, global distribution, mining and supply patterns, technical suitability for coal gasification and related processes, economic and market aspects, environmental considerations, and…
Gasification-grade bituminous coal
Gasification-grade bituminous coal is a specific class of coal valued for its suitability in conversion processes that produce synthesis gas (syngas) — a mixture primarily of carbon monoxide and hydrogen…
Coal for urea production
The use of coal as a feedstock for industrial chemical production — particularly for synthesizing ammonia and, subsequently, urea — is a major but often overlooked component of the global…
Coal for ammonia synthesis
This article explores the role of coal as a feedstock for industrial ammonia synthesis: where such coal is found, how it is mined and processed for chemical use, the technologies…
Chemical feedstock coal
Chemical feedstock coal is a class of coal valued not primarily for its role as a thermal fuel but for its capacity to provide carbon-rich raw materials for chemical processes.…
