A Provisional Basinal Study of the Waterberg-karoo, South Africa
R1500,00
Description
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The Amenability of Some South African Bituminous Coals to Binderless Briquetting
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Laboratory compaction work with testing of compressive, abrasion and water resistance, giving steam and metallurgical coal producers a basis for judging which fines can be agglomerated.
What this report foundNine bituminous coals from the Witbank, Waterberg and Soutpansberg coalfields all formed compacts without a binder, and the process worked better with coking...
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Nine bituminous coals from the Witbank, Waterberg and Soutpansberg coalfields all formed compacts without a binder, and the process worked better with coking coals. Reactive maceral content, free swelling index and Hardgrove grindability index governed briquette strength, with ash and kaolinite contents also contributing to bonding. Briquetting pressure, feed moisture and particle size distribution controlled the outcome.
Transformation of the Coal Mining Procurement Supply Chain
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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...
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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.