What does Consist of the Lime Rotary Kiln? Essay

Submitted By fengyanyan1990
Words: 385
Pages: 2

A lime kiln is used to produce quicklime through the calcination of limestone (calcium carbonate). The chemical equation for this reaction is:CaCO3 + heat → CaO + CO2. This reaction takes place at 900 °C (at which temperature the partial pressure of CO2 is 1 atmosphere), but a temperature around 1000 °C (at which temperature the partial pressure of CO2 is 3.8 atmospheres) is usually used to make the reaction proceed quickly. Excessive temperature is avoided because it produces unreactive, 'dead-burned' lime.

New technology lime rotary kiln, press the fuel can be divided mix kilns, namely burn solid fuels, coke, coal and coke powder, etc. Gas kiln. Gas kiln including burning blast furnace gas, coke oven gas, calcium carbide exhaust gas, natural gas, occurrence boiler etc. According to the kiln form cent, have shaft kiln, rotary kiln, sleeve kiln, west Germany dimension, kiln, mascherano mayer this kiln (Switzerland), eph kass kiln (Italy), etc. It has positive pressure operation kiln and negative pressure of operating kiln points. New technology lime kiln conquer coke oven gas calorific value is high, the burning flame short problem, can make the remaining coke oven gas can be fully used. From originally of coke oven gas 'point sky lanterns', environmental pollution into the enterprise create benefits for the precious energy. In iron and steel enterprises, coking enterprise, calcium carbide enterprises, and refractory industry is very good energy-saving, environmental protection, synergistic in an effective way.

Lime rotary kiln is composed of cylinder,