The influence of the following factors on the reactivity CRI and hot strength CSR in industrial cok-ing is studied: eliminating bituminous coal from the coal batch; considerably increasing the coking periods;and significantly reducing the ash content of the batch. Batch composition such that the coke quality meetsthe needs of export customers (including requirements regarding CRI and CSR) is identified. Sharp deterio-ration in CRI and CSR is seen when the batch includes coal with high ash basicity and coal concentrate thatis heavily contaminated with intermediate products.
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