0
What else can I help you with?
How do you find coal Hard groove index?
Coal sample of specific size is put into griding vessel. HGI machine is rotated for 60 times (or so) and the coal is taken out. Agian, coal is checked for the sieve passing ratio and its HGI is calculated against standard curve.
What is the HGI for Indian coal?
55
Who developed the computer Printer?
hgi
What is Hardgrove grindability index?
The Hardgrove Grindability Index was developed in the 1930s from experimental work by R. Hardgrove to determine the relative difficulty of reducing various coals to a particle size required for efficient combustion in pulverized coal boiler furnaces. The HGI is now commonly applied to specifications for coal to be used in the iron making, cement and chemical processes. There are several different "standard" methods for the determination of HGI (e.g. - AS1038 Part 20:2002, and ASTM D409-2006), which can lead to significantly different results. Further, HGI is an empirical measure and not a physical proprty of coal; as such the results of any standard test have relatively low repeatability for a given coal sample. In general, the higher the HGI value, the more readily a coal can be reduced to smaller particle sizes.
What is a sample statistics?
It is a value calculated from the sample values only.It is a value calculated from the sample values only.It is a value calculated from the sample values only.It is a value calculated from the sample values only.
Is there any relation between HGI and grade of coal?
Yes, there is a relation between Hardgrove Grindability Index (HGI) and the grade of coal. Essentially, the HGI is a measure of the grindability of a coal, indicating how easily it can be pulverized. Lower-grade coals typically have lower HGIs, meaning they are harder to grind compared to higher-grade coals.
What was the result of the diseases that Columbus gave the taino?
hgi
What is HGI in Coal?
HGI, or Hardgrove Grindability Index, is a measure of the grindability of coal, indicating how easily it can be pulverized. It is determined by a standardized test that evaluates the coal's resistance to grinding, with higher HGI values suggesting that the coal is easier to grind. This index is important for optimizing the efficiency of coal milling processes in power plants and other industrial applications. HGI values typically range from 30 to 110, with higher values generally representing softer, more easily grindable coals.
What is HgI?
HgI is the chemical formula for mercury iodide, a compound composed of mercury and iodine. It is a yellow solid that is used in various applications such as in the laboratory as a reagent and in the production of organic compounds.
What is an dependent value?
there is a matching of the first sample data drawn and a corresponding data value in the second sample data.
Is there any relationship with coke M40 and CSR of metallurgical coke?
CSR of coke , called coke strength after reaction is determined as below In the test a 200g sample of –21mm +19mm square hole coke (usually prepared by crushing 10kg of +25mm coke) is heated at 1100 C under 1atm pressure of carbon dioxide for 2 hours. The coke is cooled under nitrogen .The reacted coke is placed in an I drum (no lifters) and subjected to 600 revolutions. The percent of material removed from the drum that is +10mm square hole (sieve) is known as the coke strength after reaction (CSR). the minimum value of CSR is 62% Micum index M 40 indicates the strength of coke against both impact The micum drum is made of mild steel and is 1m in internal diameter. 50kg sample of coke above 63mm size is rotated for 4 minutes at the rate of 25 revolutions/min. After rotation, the coke is taken out and screened through standard round holes. The percentage coke retained on 40mm ais designated as M40 inde. the min value is 80%. so the CSR takes a reaction into account , and then determines the strength of coke , a case that is likely to occur in the process of blast furnace hot metal making ,but M 40 index accounts for the strength of the coke that can support the charge(feed like iron ore ,flux etc) put into the blast furnace.
Is HgI soluable?
Mercury(I) iodide (HgI) is generally considered insoluble in water. However, it can dissolve in certain organic solvents and in the presence of complexing agents. It is important to note that mercury compounds can be toxic, so handling them requires caution.
