Coaltech Research Association

Flammability, corrosion resistance and environment by V Mhlawakhe.pdf

Laboratory work turning high ash coal fines into moulded building composites, comparing coal tar pitch against a silicone binder, with strength, burning, corrosion and leaching tests. For product developers.

What this report found

Air blowing converted coal tar into a pitch with 11.27% volatile matter and 87.68% fixed carbon, which bound high ash coal fines into structural composites. Compressive strengths ran from 106.58 to 344.71 MPa and flexural strengths from 48.75 to 159.30 MPa. Flammability was low across all composites and corrosion rates stayed below those of some commercial ceramic tiles.

R1500,00

Description

Related Products

Soil Covers Guideline

2022

R1500,00

R1500,00

National and Sector-Specific Social and Economic Implications of Selecting Capital or Labour Intensive Methods of Coal Production

2002

Scenario modelling of the sector wide and national employment and economic effects of production method choice in underground coal mining, for planners and policy makers.

What this report foundCompares labour intensive mechanised drill and blast underground mining with capital intensive bord and pillar using continuous miners, and adds the option of...

R1500,00

R1500,00

What this report found

Compares labour intensive mechanised drill and blast underground mining with capital intensive bord and pillar using continuous miners, and adds the option of substituting locally made goods for imported supplies. Input data came from two mines running both types of section under comparable geological conditions, covering worker numbers, skill profiles, cost structures and import dependence, then calibrated to industry totals to drive a socio-economic model.

Determination of the Impact of Coal Mine Water Irrigation on Groundwater Resources

2007

Groundwater investigation behind mine water irrigation in the Mpumalanga coalfields, with hydraulic testing, leaching studies and site selection and monitoring guidance for mines and regulators.

What this report foundMonitoring and geochemical modelling at five pilot sites, on undisturbed soils and on opencast spoils, showed that most soils held a large share of the applied...

R1500,00

R1500,00

What this report found

Monitoring and geochemical modelling at five pilot sites, on undisturbed soils and on opencast spoils, showed that most soils held a large share of the applied salt in the upper unsaturated zone and that salinity built up slowly. Leachate volumes, leachate quality and aquifer mixing ratios were quantified. Irrigation is recommended on alternating pivots and for no longer than ten years in one area.

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.

Shopping Basket