Integrated drying process and device for dry granulated slag and sludge

An apparatus for molten slag cooling, granulation and sludge drying, comprising:

• a) a molten slag cooling treatment device having a cylinder structure, comprising:
• a propulsion mechanism provided on an inner wall of the molten slag cooling treatment device, a molten slag feeding hopper provided at an inlet of the molten slag cooling treatment device, and a slag discharge mechanism provided at an outlet of the molten slag cooling treatment device;
• wherein the molten slag cooling treatment device is provided with a first driving device configured to drive the molten slag cooling treatment device to rotate;
• b) a plurality of steel balls, and a steel ball transporting device coupled to the inlet of the molten slag cooling treatment device;
• c) a high temperature steel ball chute, one end of which is coupled to the outlet of the molten slag cooling treatment device;
• and
• d) a sludge drying device having a cylinder structure, comprising:
• a propulsion mechanism provided on an inner wall of the sludge drying device, a sludge transporting device provided at an inlet of the sludge drying device, and a dry sludge discharge device provided at an outlet of the sludge drying device, wherein the sludge drying device is provided with a second driving device configured to drive the sludge drying device to rotate;
• wherein the inlet of the sludge drying device is coupled to the other end of the high temperature steel ball chute;
• wherein the apparatus further comprises a low temperature steel ball chute, one end of which is coupled to the outlet of the sludge drying device, and the other end of which is coupled to a steel ball inlet of the steel ball transporting device;
• and
• wherein the steel ball inlet of the steel ball transporting device is communicated with the outlet of the sludge drying device via the low temperature steel ball chute, and a steel ball outlet of the steel ball transporting device is coupled to the molten slag feeding hopper of the molten slag cooling treatment device, such that the molten slag cooling treatment device, the steel ball transporting device, and the sludge drying device are arranged in an end-to-end triangular configuration.