Recently, the drying process in the nano-calcium carbonate industry has sparked heated discussions. As a traditional industry, it has long adopted a three-stage process of "hollow paddle dryer + spin flash dryer + grinding and depolymerization machine", which not only requires supporting hot blast stoves but also has the problem of high energy consumption.
     Exchanges with industry experts have found that the existing process may be due to design units following traditional schemes to avoid risks. However, the RD drying method, relying on the advantages of large-scale heat conduction dryers, can meet the standards with only one-stage drying. Its characteristics of low energy consumption, no wall sticking or shaft wrapping, and large overall heat transfer coefficient have broken the limitations of the traditional process.
     This process controversy highlights the urgency of technological upgrading and replacement in the industry. The promotion of RD drying technology is expected to help nano-calcium carbonate enterprises reduce production costs, improve production efficiency, promote the green and low-carbon development of the industry, and provide a new path for technological innovation in traditional industries.

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