Coaltech Research Association

Models for Predicting Methane Gas Release from Coal Seams

Alan Cook

Emission factors and calculation models for national greenhouse gas reporting, built from mine seam gas measurements and ventilation sampling, for environmental staff and inventory compilers.

What this report found

Emission factors derived from measured South African seam gas data give simple models for methane released by underground mining, surface mining and coal after mining. Applied across the industry they put total methane emissions at 52 000 to 93 000 tons a year. The models follow the IPCC Tier 2 approach using country specific factors.

R1500,00

Description

Related Products

Causes, Symptoms, Prevention and Alleviation of Soil Compaction on Mined Land

Norman F.G. Rethman

2006

A review of South African opencast coal experience, written for environmental officers and mine management who must correct legacy compaction and plan operations that avoid creating more.

What this report foundCompaction on rehabilitated opencast land restricts effective rooting depth so severely that only a small proportion of arable and grazing areas reach their...

R1500,00

R1500,00

Norman F.G. Rethman

What this report found

Compaction on rehabilitated opencast land restricts effective rooting depth so severely that only a small proportion of arable and grazing areas reach their stated capability. The review sets out the causes and symptoms, argues that symptoms are usually treated without addressing the cause, and recommends site specific, resource based management, mechanisation choices weighed against compaction, and land capability standards aligned with international codes.

Fine Coal Dense-medium Cyclone Tests Conducted at Leeuwpan Coal Mine

GJ de Korte

2007

Pilot dense medium cyclone testing on fine coal inside a working spiral plant at a Mpumalanga opencast mine, ending in a full scale plant design.

What this report foundDense medium cyclones on the fine coal fraction lifted product yield well above the spiral circuit they were compared against and gave closer control of...

R1500,00

R1500,00

GJ de Korte

200720 pages

What this report found

Dense medium cyclones on the fine coal fraction lifted product yield well above the spiral circuit they were compared against and gave closer control of product quality. Cut point density control proved the hardest part of running the plant, medium properties being critical. Magnetic separator capacity had to match the duty, and a basement was needed to contain and recover medium spillage.

Shopping Basket