CEMENT

[:ru]Йенневайн Т.[:en]Jennewein, T.[:] [:ru]специалист по альтернативному топливу, компания FLSmidth Pfister GmbH, Ульм, Германия[:en]Alternative specialist, FLSmidth Pfister GmbH, Ulm, Germany[:]

Alitinform №2 (34) 2014 г. 4-11 p.

Abstract

Faced with rising primary fuel, oil, gas, coal or pet coke prices, as well as challenging market conditions, cement plants around the world are looking for ways to reduce their cement production costs. The two greatest variable production costs for cement producers are still fuel and power consumption costs. It is therefore no surprise that increasing the substitution rate of alternative fuels is a popular method of remaining competitive and thereby increasing profit in the cement industry.
Many cement plants in Europe began burning alternative fuels in the main burner many years ago. Because the fuel must be transported pneumatically into the main burner and the particle residence time in the kiln at the main burner is quite short, the fuel must be fully prepared. Independent of the feeding, a gravimetric dosing device is mandatory and its accuracy should increase with the substitution rate.

Key words:

alternative fuels; substitution rate; coarse fuel; multi-fuel system; rotor weighfeeder