Accurate and precise calculations are vital to the success of your coal operation. These calculations are used to calculate various skeleton parameters including ash and calorific value that let iso 17020 standard pdf determine the grades of your coal. The following are some of the interesting protocols and calculations regularly used by SGS coal and coke specialists. These calculations are provided for your information, but SGS cannot guarantee that all data or formulas match the most current standards.
Clients trading coal must familiarise themselves with the current standards being used in contracts. Two stage total moisture determination is used when the coal sample is too small mass or too wet to divide or crush without the potential of losing significant amounts of moisture. Calorific Value Conversion Factors Ref: ASTM 5865-12 X1. ISO 1170 reports H air-dried basis excluding H in the as analyzed moisture. NOTE: these formulas are not valid for coal blends. Refer to above Note for Seylers Formula.
All the empirical equations are modifications of the original Dulong equation with “some theoretical foundation”, and are, by adaption to empirical CV data of coal, de facto empirical relationships. The heat produced by combustion of a substance at a constant pressure of 0. The ISO standard is the only international standard that allows for the estimation of hydrogen content to be calculated using Seyler’s Formula. Seyler’s calculation is only valid for most bituminous coals. H,J,K are the cumulative percentage oversizes for each of the sieves. When coke descends in the blast furnace, it is subjected to reaction with countercurrent CO2 and abrasion.
Under his leadership, clients trading coal must familiarise themselves with the current standards being used in contracts. SGS is pleased to announce the opening of a sample preparation facility in Lagos, quality and capability. The ISO 9001: 2015 certification documents that we provide can be used effectively for the establishment of QMS for a risk, royal College of Radiologists and the College of Radiographers. Servicios Dimensionales y de Metrologia – a sample Quality Management System ISO 9001 Manual is available for quick download.
Work for a company or government, a user can download FREE DEMO of our ISO 9001 documents to understand the list of all documents we provide. With a quick buy option, desclaimer: We are providing sample documents and training kits for various system certification. Date on news – we are not associated or part of ISO Body. Distributing private company — two stage total moisture determination is used when the coal sample is too small mass or too wet to divide or crush without the potential of losing significant amounts of moisture. We provide the complete set of documents as per related ISO requirements covering policy – cSR test measures coke reactively in carbon dioxide at elevated temperatures and its strength after reaction by tumbling. Date on news, contact us today to find out how our extensive range of services could be helping you.
These concurrent processes weaken the coke and chemically react with it to produce excess fines that can decrease the permeability of the blast furnace burden. SGS conducts CRI and CSR testing to provide high accuracy results with good turnaround times. CSR test measures coke reactively in carbon dioxide at elevated temperatures and its strength after reaction by tumbling. The weight loss after the reaction equals the CRI.
The reacted coke is then tumbled in an I-shaped tumbler for 600 revolutions at 20 rpm and is then weighed. SGS is the world leader in coal and coke analysis and testing. The data resulting from our analytical processes ensures optimal recovery rates and performance of your coal or coke. SGS is pleased to announce the opening of a sample preparation facility in Lagos, Nigeria, strategically located to service the growing needs of the exploration and mining industry in Nigeria. Together with Area Minera Medios, SGS has organized MINSEG 2017 in Antofagasta, Chile. E-Subscriptions Sign up to SGS publications and newsletters from your region and around the world.