Our services
Ronewa Analytical Laboratory is committed to providing coal testing and analysis of the highest quality to the mining, energy and environmental industries.
RAL team combines cutting-edge innovation with extensive experience to serve all major coal-producing areas. Our skills extend beyond coal analysis, testing and sampling-we also provide petroleum coke analysis and testing, metallurgical coal testing, ultimate and proximate analysis, and float/sink washability study.
To learn more about each of these coal lab services, please select a category.
Safety, health, environment and quality policy
Sampling
Sampling involves taking a portion of material selected to represent a larger body of material.
Sample preparation
The procedure followed to select the test portion from the sample (or Subsample) and indicates; In-laboratory processing, Mixing, Reducing, Cooling and Quartering, Riffling, Milling and Grinding.
Proximate Analysis
>> Proximate analysis indicates the percentage by weight of the fixed Carbon, Volatiles, ash, and Moisture Content in Coal.
>> Fixed Carbon acts as a main heat generator during burning.
>> High Volatile matter content indicates easy ignition of fuel.
>> Ash is an impurity that will not burn, the Ash content is important in the design of the furnace grate, combustion volume, pollution control equipment.
Ultimate Analysis
Ultimate analysis indicates the various elemental chemical constituents such as Carbon, Hydrogen, Oxygen, Sulphur, etc. The Ultimate analysis determines all coal components. This information is required for the calculation of flame temperature and the duct design, etc. The Ultimate Analysis is determined or done in our properly equipped laboratories.
Calorific Value
This test will determine the heating value of coal; it varies from coal field to coal field, Calorific value is determined in a bomb calorimeter.
Moisture Analysis
Four categories fall within moisture determination in coal analysis.
1. As received basis (arb): Moisture content determined on the sample as-received at the laboratory.
2. Air-dried basis (adb): Moisture content determined after the sample is dried in air for a period of a few days to remove any surface moisture.
3. Dry basis (db): Additional moisture removed by heating in an oven at 104-110°C.
4. Dry ash free basis (daf): Volatiles matter and fixed carbon are calculated to 100% by removing the ash and moisture contents.
Fixed Carbon
Fixed carbon is the solid combustible residue left after the moisture and volatile matter have been driven off by heating in an inert atmosphere. In the proximate analysis, it is calculated by subtracting the sum of moisture, ash and volatile matter from 100%.
Volatile matter
Refers to the products, excluding moisture, that are given off in a gaseous or vaporous form when coal is heated to 950°C in an inert atmosphere, according to prescribed methods. Volatile matter is mainly composed of combustible gases.
Abrasive Index
Free Swelling Index
Hardgrove Grindabilty Index
Ronewa analytical laboratory strives for excellence, safety, health, environment and quality (SHEQ) are key integral points in the way we operate.
Safety and Health
To conduct our business, safety and health come first,this leads to zero harm of our employees and stakeholders. Our goal is to maintain and meet up to our standard of no fatality or no harm to our employees. To meet up to our standards we always seek to improve, documentation and records are kept as this is a fundamental point in business improvement.
Environment and quality We conform to international standards and requirements on environmental management.
Third party services
>> Sampling and analysis are accurately done at loading, rails trucks
and verification certificates are provided
>> Verification and testing is timeously done on site or in our main l
aboratories
Our approach
Traditional and Mechanical sampling
>> Installation and continuous monitoring of sampling systems to
international standards
>> Manual, auger or mechanical sampling in ports, rail and
transportation hubs
Range of Products
CONTACT INFORMATION
Physical Address:
126 Rabe street
Mokopane
0600
South Africa
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