Coaltech Research Association

BCI Chemical Research & Analysis – Calcium & Magnesium

Jacques Magliolo

Desk research on two mine water by products, closing out the economic analysis behind proposed brine treatment plants, for readers judging whether recovered salts can be sold.

What this report found

Prices for calcium and magnesium sulphate are recorded for South Africa and for world markets as at mid 2012, together with price trends and the groundwater chemistry that governs which salts a mine water stream will yield. The figures were assembled to support feasibility studies on a eutectic freeze crystallisation plant and an ion exchange plant.

R1500,00

Description

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An Environmental Management Accounting Model for the South African Mining Industry

2008

Doctoral work comparing environmental cost practice at four South African mines and building a model from it, for environmental managers and finance staff in mining companies.

What this report foundConventional cost accounting at the mines studied could not report on physical structure or materials flow, so environmental costs such as water, energy and...

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What this report found

Conventional cost accounting at the mines studied could not report on physical structure or materials flow, so environmental costs such as water, energy and consumables stayed hidden and chances to cut them were lost. Four case studies across different commodities and mining methods showed the same limitations. An environmental management accounting model is proposed to identify and allocate those costs.

Liska Cronje – Ventgiene

Institutional, Legal & Financial Aspects of Regional Mine Water Collection, Treatment and Re-use

2004

Review of ownership models, licensing and funding for a shared regional mine water treatment scheme on the Mpumalanga coalfields, written for mine managers and water regulators.

What this report foundA regional scheme to collect, treat and re-use mine water in the Upper Olifants River Catchment has merit, with the mines best placed to start it through a...

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What this report found

A regional scheme to collect, treat and re-use mine water in the Upper Olifants River Catchment has merit, with the mines best placed to start it through a dedicated mine water company that brings in the water services authorities. Water legislation supports the scheme provided the regulator allocates mine water as a resource. Viability rests on the tariffs mines and water users pay.

Improved Utilization of Underground Coal Reserves

Nico van Eck

2016

Working reference on high extraction methods, from stooping and rib pillar extraction to auger, punch, longwall and backfilling, drawn from South African colliery experience for mine planners.

What this report foundAbout 3.19 billion tons of coal now sits underground in pillars, growing by roughly 110 million tons a year under current bord and pillar practice.

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Nico van Eck

What this report found

About 3.19 billion tons of coal now sits underground in pillars, growing by roughly 110 million tons a year under current bord and pillar practice. Pillars with a safety factor of about 1.8 or higher can be extracted successfully, and 1.5 is permissible in thin seams where the pillar width to height ratio exceeds 10.

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