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Q: What does a low Grindability Index indicate?
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How we can calculate the Grindability index of Egyptian Rock Phosphate?

Bond's work index one of the most acceptable approach to calculate the grindability index.


What is the unit of Hardgrove Grindability Index?

It has no units because we are determining the degree of pulverized coal.


Hard grove index?

What is the HGI(Hard Grove Index)?from britannicameasurement of coal grindability...in a laboratory mill of standard design. The percent by weight of the coal that passes through a 200-mesh sieve (a screen with openings of 74 micrometres, or 0.003 inch) is used to calculate the Hardgrove grindability index (HGI). The index is used as a guideline for sizing the grinding equipment in a coal-preparation plant.Can you tell us the HGI for Indian coal?


What is the noun of grind?

Grindability


Is there any relation between HGI and grade of coal?

YES, there is a relation between HGI and coal quality. HGI is the parameter to indicate the hardness or grindability of the coal when it is used in pulverized coal for boiler


What does low therapeutic index mean?

Drugs with a low therapeutic index have a narrow margin of safety.


What do the numbers on index contour lines indicate?

The numbers of contour lines indicate altitude or elevation along that line.


What is labeled to indicate the elevation along a contour line?

index contour


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.


Define penetration index and show how it is related to temperature susceptibility?

high penetration index shows low temperature susceptibility, low penetration index shows high temperature suspectibility.


Are there websites that have recipes with a low glycemic index?

This website http://www.glycemicgourmet.com/low-glycemic-recipes.html gives you recipes for breakfast, lunch, snacks, and dinner that are low glycemic index.


Index minerals allow a scientist 2 understand the history of metamorphic rock?

Yes! since index minerals form at specific pressure and temperature conditions hence when they are encountered or observed in a certain metamorphic rock they serve to indicate the condition by which the rock formed.They can tell whether it is a high grade or low grade metamorphism.e.g Andalusite mineral indicate high grade metamorphism associated with high temperature.