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The case study is on the use of pulverized anthracite and coke oven gas as a fuel for the twin shaft regenerative kiln in quick lime manufacture. The study has successfully proved the suitability of the above fuels as economic and practical alternatives.

In the cement, lime and power generation sectors, the most commonly used method for burning solid fuels is pulverized fuel combustion. The article includes extensive discussion of twin shaft regenerative lime kilns.

CIMPROGETTI S.p.A's CIM-ISSY 32 advanced control system accurately collects and handles data allowing for the production of better quality lime. CIM-ISSY 32 collects, handles and analyzes large quantities of process and operation data of lime plants, directly impacting on lime quality and fuel efficiency. The evolution and modules of the system are discussed.

Cimprogetti SpA has commissioned its anthracite-fired CIM Reversy NS 45 kiln with a capacity of 200 t/d. The kiln has been installed at the Plena Plant, Bulgaria, and is equipped with an inertisation system for CO2 to avoid dust explosion risks. The company has also installed a CIM-Twin D NS55 kiln, fired on coke oven gas, with a capacity of 260 t/d at the Kardemir Plant, Turkey. The two kilns demonstrate the suitability of pulverized coal and coke oven gas as fuels and both produce consistent quicklime quality.

Italy's Cimprogetti has developed two hydration plants which allow lime producers to comply with increasingly stringent environmental requirements. The Cim-Hydrax comprises pre-hydration, hydration and finishing units and the TG-Third generation incorporates a bladed twin shaft high speed pre-mixer. The two systems remove particulates to

Work carried out for Rugby Jamaica Lime and Minerals Ltd on lime kilns of a regenerative twin shaft type is examined in detail.