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PB-KBB report and the nahcolite content at that <br />temperature from Page 4.5 of the same report. <br />For example: <br />@ 165 degrees F. the specific gravity is <br />1.0934; the nahcolite content is 15.6 $. <br />Therefore the tons of nahcolite in solution <br />is: Vt(($ nahcolite in ore/100)(62.4 x <br />specific gravity of the brine)(fractional <br />nahcolite content of the brine)]/2000 or <br />Tons = 856,489 [(85/100) <br />(62.4x1.0934)(0.156)]/2000 <br />= 3,874 tons remaining in solution <br />at 165 degrees F. <br />Tons remaining at 80 degrees F. = 2,119 <br />2. Calculate the total tonnage dissolved by leaching. <br />Tons = Vt($ nahcolite in ore/100) <br />(density of nahcolite ore)/2000 <br />or <br />Tons = 856,489 (85/100)(135.0)/2000 <br />= 49,141 tons dissolved <br />3. Calculate the tons of nahcolite produced. <br />@165 degrees F, Tons = Item 2 - Item 1 <br />= 49,141 - 3,874 <br />= 45,267 tons <br />@ 80 degrees F, Tons = 47,022 tons <br />If the insolubles in the ore are 20$ the production would be <br />reduced to: <br />42,603 tons @ 165 degree F. ending temperature <br />and 44,255 tons @ 80 degree F. ending temperature <br />NOTE: Ending temperature can only be accomplished by <br />injection of cold brine to force out the hot brine. In- <br />cavity cooling only precipitates the nahcolite from <br />solution. <br />.~ <br />