Raw materials characterization for industrial lime manufacturing
![1 Twin Shaft Regenerative (TSR) kiln. A: simplified scheme from European Commission (2010) [1], modified); B: a simplified scheme of Cimprogetti twin shaft regenerative kiln (2012)](/uploads/images/2013/w300_h200_x400_y274_101528223_f3e5aec482.jpg)
![3 Classification of sedimentary carbonate rocks according to [1]. Symbols legend: 1: sample from Germany; 2: sample from South Africa; 3: sample from UAE; 4: sample from Malaysia](/uploads/images/2013/w300_h200_x400_y219_101528232_d8c7b15e4b.jpg)
![6 Quicklime reactivity as a function of compositional (a) and textural parameters (b) [8]](/uploads/images/2013/w300_h110_x230_y55_101528231_39cf497a91.jpg)
![7 Sticking tendency, namely overburning test, as a function of compositional (a) and textural parameters (b) [8]](/uploads/images/2013/w300_h110_x229_y55_101528233_c781d898d5.jpg)
![8 Maximum slaking temperature vs. lime degradation test (a) and apparent density vs. maximum slaking temperature (b) [8]](/uploads/images/2013/w300_h110_x227_y55_101528214_63e1f64ddf.jpg)
To meet the changing needs of different industrial sectors, various qualities of quicklime and hydrated lime are required. For this reason, an improved quality control in the calcination is necessary.
1 Introduction
Case studies reported in this paper provide a representative overview of the technical activity carried out worldwide by Cimprogetti S.p.A in the last ten years. Customers from all over the world always send commercial carbonate rock samples, namely “limestones” and “dolomites”, to evaluate their suitability for the calcination process in a Twin Shaft Regenerative kiln (TSR), subsequently designed, and installed, by the upper Italian company (Fig. 1).
Considering that different qualities of quicklime, and hydrated lime, have become needed to satisfy the new requests arising from...
