New health data indicates that the old dieting equation âone pound of fat = 3,500 caloriesâ is wrong, Lifehacker reports. It turns out youâll have to double that number to lose one pound of fat, which might sound like bad news to anyone looking to lose some weight. Research from the National Institute of Health indicates that you have to burn 7,000 calories for each pound of fat that you want to get rid of. A new Body Weigh Planner calculator based on that research is available at this link.
Furnace in fire clay. Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a mineral aggregate composed of hydrous silicates of aluminium (Al2O3Â·2SiO2Â·2H2O) with or without free silica..
High-grade fire clays can withstand temperatures of 1775 Â°C (3227 Â°F), but to be referred to as a fire clay the material must withstand a minimum temperature of 1,515 Â°C (2,759 Â°F). Fire clays range from flint clays to plastic fire clays, but there are semi-flint and semi-plastic fire clays as well.ire clay is resistant to high temperatures, having fusion points higher than 1,600 Â°C (2,910 Â°F), therefore it is suitable for lining furnaces, as fire brick, and for manufacture of utensils used in the metalworking industries, such as crucibles, saggars, retorts and glassware.