The SRT+ULD charging systems have introduced a number of innovations to the TSR kiln charging operation, in order to enhance flexibility, control segregation of materials and properly distribute the charges to facilitate uniform calcination. The table shows the comparison between the duration of typical standard cycles and the extended cycles resulting from SRT technology. The allows the charging of SRT charging device fresh limestone during the burning cycle (and not during reversal) as normally made in this type of kilns. Furthermore, charging is effected in two or more steps to better control the waste gas temperature (which determines the practical limit to the cycle length) and therefore to extend the burning time by reducing the reversal (idle) time. The split charge may allow, in some cases, operation of the kiln with a much wider stone gradation (up to 1:4). The 12 Loading The allows ULD hydraulic distribution device directing the fresh limestone charges as necessary to improve distribution and avoid segregation. The smaller the particle size of limestone, the higher the importance of accurate stone spectrum distribution during charging. system
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