Coaltech Research Association

Preventing Methane Ignitions in Continuous Miner Headings

R1500,00

Description

Related Products

Transformation of the Coal Mining Procurement Supply Chain

2004

Review of preferential procurement and small supplier development at South African coal producers, based on interviews with procurement staff, suppliers and accreditation agencies, with recommendations for management.

What this report foundThree modes of intervention were found in coal company procurement: preferential procurement rules, segmentation of goods and services by suitability for...

R1500,00

R1500,00

What this report found

Three modes of intervention were found in coal company procurement: preferential procurement rules, segmentation of goods and services by suitability for transformation, and support programmes for small suppliers. Progress stalled where supplier development was handled by staff carrying other duties, since work not tied to production loses time and has no target. The remedy proposed is procurement targets linked down through commercial and production management.

Beneficiation of weathered ultra-fine discard with an advanced High internal phase water-in-oil technique

2022

Laboratory flotation test work on five weathered discard samples, comparing an emulsion binder with kerosene and optimising dosage and agitation speed. For plants looking at fine discard dumps.

What this report foundA high internal phase water in oil emulsion binder upgraded weathered ultra fine coal discard.

R1500,00

R1500,00

What this report found

A high internal phase water in oil emulsion binder upgraded weathered ultra fine coal discard. At 5 kg/ton on a feed of 29.34 per cent ash and 20.94 MJ/kg, flotation gave a clean coal of 11.76 per cent ash and 28.61 MJ/kg at 15.61 per cent mass yield. Calorific value rose with agitation speed and fell with binder dosage.

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