Y value is called the thickness of colloidal layer, and G value is an index to measure the cohesiveness and coking of coal. Y greater than 25mm is fat coal, and G greater than 65 is strong coking.
Extended data:
Matters needing attention in laboratory analysis of coal:
A, responsible for coal quality testing instrument.
Two, seriously study the party's production safety principles and policies, and firmly establish the idea of "safety first".
Three, sampling, sample preparation, testing, strictly implement the operating procedures. Before each work, carefully check the power supply and all kinds of coal quality testing equipment to see if there are any potential safety hazards, and ensure that the coal quality testing equipment is unsafe to operate, and no samples are prepared or tested.
Four, constantly learn new knowledge and new technology, and strive to improve the level of coal quality management. Strengthening coal quality standardization construction and upgrading coal quality specialty.
Five, the development of coal laboratory management system, strengthen the laboratory information security management. Without the approval of the leader, the coal quality test report shall not be circulated casually.
Six, equipment inspection once a month, found hidden dangers timely reflect to the superior, take timely measures.
Seven, the laboratory should be bright and clean, the equipment should be clean and standardized, and the instrument cleaning should meet the standards.
Eight, often in-depth site, supervise the implementation of coal quality management system. Sampling should be scientific and testing data should be true.
Nine, comprehensive, accurate and timely provide coal quality reports to relevant departments and leaders, and do a good job of sorting and archiving coal quality data.
Baidu encyclopedia-coal quality detection