What's the ingredient of burnt lime?
Burning and burnt lime quality, one is to look at the amount of the content of calcium oxide, Magnesium Oxide, the two is to look at the raw lime burning rate, burning is one part of limestone is not fully decomposed is burnt limestone calcination transition, quicklime is dense, this part of lime low activity and difficult to react in the back of the production.
The calcination of lime is actually the process of decomposition of calcium carbonate, so lime is made up of calcium oxide! Again, the burnt lime is made of calcium oxide.
Give you a burning rate test method: 1 lime calcined method principle appropriate water, rapid reaction of calcium hydroxide (CaOH) 2, undigested part is not complete or calcined lime calcined transition the old grey. 2 analysis steps to take the broken 6mm sample 1kg and iron basket, put about 3000mL20 degrees of water, soaked with water after 30min fully wash mortar, undigested particles into the pot, the dry 60min in 105-110 oven, sieving powder with 2mm mesh, weighing. The sieve was tested with hydrochloric acid of 1mol/L and reacted with hydrochloric acid to produce a bubble for raw combustion. Otherwise, it was over burned, and the ratio of raw to burnt was determined by visual measurement. 3 Calculation of the rate of over burning W, in mass fraction, expressed as%, press type calculation: w=100 * m1/m M1 - Sieve quality value of the unit is gram (g) m - the quality of the sample value, the unit is g. I would like to judge the quality of lime, you can directly specify the rate of burning index. Of course, because of the existence of burning, calcium oxide content of calcium oxide, Magnesium Oxide, as the building said, not calcium oxide lime, Magnesium Oxide's true content. At this time, it is necessary to determine the content of calcium oxide and Magnesium Oxide in the burned part. The rate of burning shall be taken into account during the amendment.
