An integrated drying process and device for dry granulated slag and sludge. The process comprises the following steps: 1) slag ball mixing and soaking: high-temperature slag and steel balls are fully mixed and exchange heat therebetween, the high-temperature slag is cooled because the heat thereof is quickly absorbed by the steel balls and is crushed to form granular slag, and the temperature of the steel balls rises because the steel balls absorb the heat of the high-temperature slag; and 2) sludge drying: the high-temperature steel balls are conveyed to a sludge drying device to be mixed with injected sludge, the sludge is dried, the steel balls are separated from the sludge when the water content of the sludge reaches a set value, and the steel balls and the sludge are separately discharged. In the present invention, high-temperature slag waste heat is used for heating steel balls, and sludge is dried by means of the heated steel balls, thus achieving the cooperative treatment of slag cooling, granulation and sludge drying, solving two difficult problems of slag cooling and sludge drying, and greatly increasing the waste heat recycling rate of high-temperature slag.

A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating the dusts after wet washing or spraying, and then conveying into a tailing sludge blending device (5) by means of a conveying device, mixing and stirring the tailing sludge and original sludge, conveying the obtained mixture into the drum (1), and drying the mixture to realize zero discharge of undried sludge.

A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating the dusts after wet washing or spraying, and then conveying into a tailing sludge blending device (5) by means of a conveying device, mixing and stirring the tailing sludge and original sludge, conveying the obtained mixture into the drum (1), and drying the mixture to realize zero discharge of undried sludge.

A drying device for a mixture of a liquid and one or more solids, having a receiving container for the mixture, a rotor that is situated with one section of its circumference in the receiving container, and a drive device for rotatively driving the rotor, the rotor having a plurality of flat entrainment elements, characterized in that the entrainment elements have a radial orientation with respect to a rotational axis of the rotor, wherein at least some of the entrainment elements have a configuration in which relatively narrow entrainment elements alternate with relatively wide entrainment elements in the circumferential direction of the rotor, and/or at least some of the entrainment elements are provided with a plurality of through openings.

A drying device for a mixture of a liquid and one or more solids, having a receiving container for the mixture, a rotor that is situated with one section of its circumference in the receiving container, and a drive device for rotatively driving the rotor, the rotor having a plurality of flat entrainment elements, characterized in that the entrainment elements have a radial orientation with respect to a rotational axis of the rotor, wherein at least some of the entrainment elements have a configuration in which relatively narrow entrainment elements alternate with relatively wide entrainment elements in the circumferential direction of the rotor, and/or at least some of the entrainment elements are provided with a plurality of through openings.

A thermal processing apparatus and a thermal processing method where the vessel with interconnected chambers in which the solid material is thermally processed is suspended in a heat exchange medium while it is rotated, which reduces the energy to rotate the vessel, increases heat transfer surface area, increases the turbulence of the heat exchange medium around the vessel and improves the movement of solid particles relative to each other and relative to the heat exchange surface. These features combine to increase the heat transfer rates within a compact vessel size.