Technology

Raising the temperature accelerates the decomposition reaction calcium carbonate, but excessively high firing temperature affects the quality of the product as well as developing the phenomenon of "burnout." The most widely received for lime shaft kilns, the height which reaches 20 m. Shaft furnaces are distinguished by type of fuel used in them and the way it burned. In solid fuel ovens peresypnyh fed with raw and burnt between the pieces of baked material. It is used fuel with low content of "volatile" - coal, coke and lean varieties of coal, giving a short flame when burning. In furnaces with remote fires last located on the outer perimeter of the furnace. They burn solid fuel (In whole or in part) and the resulting hot gases are fed into the burning zone. Apply long-flame fuel with a high content of "volatile", as well as peat, wood, shale oil. The gas furnace fuel is most often used natural gas which is fed directly into the blast furnace and burned in a layer of material.

Rotary kilns can get myagkoobozhzhennuyu lime quality of small-sized limestone and soft carbonate rocks (chalk, tufa, limestone, limestone) that could not burn in the blast furnaces of the propensity of these materials to "hang" in the mine, leading to a breach of Technology firing. The length of lime rotary kilns 30 - 100 m with a diameter of 1.8 - 3 m, the performance reaches 400 - 500 tons / day. that is 2-4 times higher than in shaft kilns. If you have read about Peter Thielalready - you may have come to the same conclusion.