﻿﻿ how to cqlculate the acidity during cyanidation

# how to cqlculate the acidity during cyanidation

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#### how to calculate titratable acidity sciencing

titratable acidity (in g/100 ml) is typically used to express an acidity of wines that contain several organic acids but mostly tartaric acid. as an example we will calculate the titratable acidity of the tartaric acid (c4h6o6) solution if its 15 ml aliquot was titrated out with 12.6 ml of the 0.1 molar solution of sodium hydroxide (naoh).

#### calculating cyanide consumption

computing cyanide consumption of a laboratory leach test may be done as in the following example: ore taken 250 grams. ratio of solution to ore 3:1 = 750 cc: 250 grams. cyanide strength 0.3% kcn. or when working on the metric system ore taken 200 grams ratio of solution to ore 3:1 = 600 cc: 200 grams cyanide strength 0.3% kcn it should be noted that cyanide consumption as figured above

#### determining titratable acidity with sodium hydroxide

determining titratable acidity with sodium hydroxide. using phenolphthalein indicator solution. follow these steps to determine the titratable acidity (often just referred to as ta) in your must or wine. add a known amount of grape juice to a beaker (usually 10 or 15 milliliters).

#### measurement of ph and titratable acidity

g. calculate the titratable acidity using the following formula: % acid = [mls naoh used] x [0.1 n naoh] x [milliequivalent factor] x  grams of sample commodity predominant acid milliequivalent factor stone fruit apples kiwifruit malic acid 0.067 citrus citric acid 0.064 grapes tartaric acid 0.075

#### effect of ph alkalinity on gold leaching

the role ph has in affecting gold leaching rates by cyanide and the functions of calcium hydroxide in cyanidation are as follow: 1. for safety and to prevent loss of cyanide by hydrolysis. 2. to prevent loss of cyanide by the action of carbon dioxide in the air. 3. to decompose bicarbonates in mill water before using it in cyanidation. 4. to neutralize acidic compounds such as ferrous salts

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