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In page Direct reduced iron:

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Direct reduction processes were developed to overcome the difficulties of conventional blast furnaces. DRI plants need not be part of an integrated steel plant, as is characteristic of blast furnaces. The initial capital investment and operating costs of direct reduction plants are lower than integrated steel plants and are more suitable for developing countries where supplies of high-grade coking coal are limited, but where steel scrap is generally available for recycling.[citation needed] Many other countries use variants of the process.