The processing plant for multiphase steel slag according to the present disclosure, wherein the water-cooling type feeding chute has a large upper portion and a small lower portion, the size and shape of the upper edge matches with the size of the slag tank mouth, and the lower opening end forms a clearance fit with the opening end of the storage bin.

The processing plant for multiphase steel slag according to the present disclosure, wherein the axis of the rotary drum has an angle of inclination relative to the horizontal plane, where the angle of inclination ranges from 0° to 25°, preferably from 5° to 15°.

The processing plant for multiphase steel slag according to the present disclosure, wherein the connecting part of the storage bin and the rotary drum has a flange structure, fixed by bolts and pins.

The processing plant for multiphase steel slag according to the present disclosure, wherein the slag discharging area of an outer cylinder of the rotary drum is provided with the water collecting rooms with a type of waterwheel, ensuring that there is no accumulation of water during processing, the rooms are provided evenly along the circumference of the outer cylinder, the angle of the partition plate between the rooms matches with the opening angle of the slag receiving funnel.

The processing plant for multiphase steel slag according to the present disclosure, wherein the connecting part of the storage bin and the rotary drum has a flange structure, fixed by bolts and pins.

Therefore, it can be fixed securely and convenient for replacement and maintenance.

According to the disclosure, the outer wall of the storage bin is provided with the grid-shaped reinforcing plate to improve the rigidity and strength of the storage bin and also increase the heat dissipation area.

The processing plant for multiphase steel slag according to the present disclosure, the material receiving area on the upper part of the funnel is provided with the speaker structure with arc transition, the chute on the lower part slag receiving area is provided with the water-cooling structure, the cross section of the chute is an ellipse with smooth transition.

The processing plant for multiphase steel slag according to the present disclosure, wherein the angle of inclination of the storage bin to the horizontal plane is 5-15°, preferably 8-12°, and the storage bin is fixed with the rotary drum, the volume of the storage bin is 2-3 times the volume of the slag tank for accommodating all the slag in the slag tank.

According to the disclosure, the steel cleaning machine is further comprised for fast cleaning the large pieces of cold steel from the rotary drum.

The method comprises rotary drum processing of steel slag, the rotary drum has a double-walled, multi-chamber structure, provided with a plurality of cooling agent inside such as steel balls and process cooling water, which can perform ball cooling—crushing—water spray cooling—water immersion cooling sequentially on the high temperature steel slag entered therein, the cooled and crushed tailings are led out from the tube in batches with the rotation of the tube and enter the subsequent conveying equipment.

According to the disclosure, the supporting roller of the rotary drum is provided on the shared base with the positioning function.

According to the disclosure, the cooling water circulation system of the rotary drum is provided with the swirling water well beside the machine, the swirling water well is in a conical shape, provided with the circulating water pump on the upper part and the spiral slag discharging mechanism on the lower part.

According to the disclosure, with the aid of the slag tank tilting mechanism, the safe and environmental friendly rotary drum processing technique for each type of steel slag can be achieved by the storage bin that is inclined and provided between the front of the rotary drum and the feeding chute, working as buffer transition section, without using the slag removal equipment, and the processing efficient is more than double that of the conventional rotary drum. Since the continuous operation of the rotary drum is achieved, the temperature fluctuation of the rotary drum is small, the operating life is long and the maintenance cost is low. At the meantime, since the mechanical cold steel cleaning equipment is provided, the downtime of the rotary drum is further reduced and the operation rate of processing steel slag by the rotary drum method is improved.

BRIEF DESCRIPTIONS OF THE DRAWINGS

FIG. 1 is a flow diagram of the processing technique by the rotary drum method for full amount steel slag processing according to the disclosure.

FIG. 2-1 is a schematic diagram of the storage bin.

FIG. 2-2 is a view of FIG. 2-1 from the D-direction.

FIG. 3 is a schematic section view of the rotary drum part.

FIG. 4 is a schematic view of FIG. 3 from the B-B direction.

In the Figures: 1 slag tank tilting equipment, 2 slag tank, 3 steel slag (molten slag and solid steel slag), 4 feeding chute, 5 fixing support for the feeding chute, 6 slag cleaning mechanism, 7 storage bin, 7-1 reinforcing equipment, 7-2 connecting flange, 7-3 fastening part. 8 rotary drum, 8-1 grate, 8-2 steel ball, 8-3 partition plate of water collecting rooms with a type of waterwheel, 8-4 supporting plate, 8-5 discharging chute, 8-6 water collecting rooms with a type of waterwheel, 8-7 outer cylinder, 8-8 slag discharging area, 9 steel cleaning machine, 10 water cooling mechanism for the feeding chute, 11 cold steel trolley, 12 front supporting roller equipment, 13 shared base with positioning function, 14 transmission mechanism, 15 rear supporting roller equipment, 16 gas collecting cover, 17 dust removal tower, 18 exhaust gas purification equipment, 19 fan, 20 chimney, 21 combined conveyor, 22 first vibrating screen, 23 slag steel trolley, 24 bucket elevator, 25 second vibrating screen, 26 iron remover, 27 temporary slag bin, 28 temporary slag steel bin, 29 truck, 30 swirling water well beside the machine, 31 spiral slag discharging mechanism, 32 circulating water pump, 33 cooling tubes, 34 outer cover.

DETAILED DESCRIPTIONS

The disclosure is further described below with reference to the drawings and specific embodiments.

A high efficiency processing plant for multiphase steel slag, suitable for full amount steel slag processing by a rotary drum method, comprises a slag tank tilting equipment 1, a feeding chute 4 provided with a funnel 42, a storage bin 7, a cooling system for storage bin, a rotary drum, a slag conveying and storing system, a exhaust emission and purification system, a cooling water circulation system, a slag cleaning mechanism 6 and a cold steel cleaning mechanism, etc., a plurality of systems constitute a complete fully quantified processing technique by the rotary drum method for steel-making slag.

The slag tank tilting equipment 1 is provided above a side of the feeding chute 4 of the rotary drum 8, which can be driven to move forwards and backwards along a horizontal track by a hydraulic mechanism to adjust a horizontal position of the feeding chute 4 from a slag tank mouth; the slag tank tilting equipment 1 is provided with two tank holding arms that are driven to rotate by hydraulic pressure, and can hold up a slag tank 2 and control the slag tank 2 to rotate, the rotation angle is 0-180 degrees, which is convenient to pour out or deduct slag 3 in the slag tank 2 in a controllable manner.

The rotary drum 8 is provided with a gas collecting cover 16, a front supporting roller equipment 12, a rear supporting roller equipment 15, a transmission mechanism 14, a shared base 13 with positioning function and other mechanisms and parts. An axis of the rotary drum 8 has an angle of inclination relative to the horizontal plane, where the angle of inclination ranges from 0° to 25°, preferably from 5° to 15°.

The feeding chute 4 is provided on a steel structure platform 5, which can transmit an impact force of the steel slag to a foundation directly. The feeding chute 4 has a straight-through cavity structure, with a large upper portion and a small lower portion, the size and shape of an upper edge matches with the size of the slag tank mouth, the size of a lower opening end 41 of the feeding chute 4 matches with the size of an opening end of the storage bin 7, forming a loose dynamic fit, as shown in FIG. 1, the lower opening end 41 is inserted into a left end of the storage bin 7 to prevent slag leakage effectively. The feeding chute 4 adopts an outer side water cooling method, with a water jacket or pipe coil structure, and the cooling of a chute wall surface is achieved by a water-cooling mechanism 10. The angle of inclination A to the horizontal of a side wall of the feeding chute 4 ranges from 30°-70°, preferably from 45°-60°.

The storage bin 7 is an open tube in a cylindrical or conical shape, with a single layer or multiple layer structure. One end of the storage bin 7 has a size that matches with the size of the lower opening of the feeding chute 4, forming a loose dynamic fit for receiving the high temperature steel slag conveyed by the feeding chute 4, and the other end is fixed and coaxial with the rotary drum 8 for conveying the high temperature steel slag into a processing chamber of the rotary drum 8 with the rotation of the rotary drum. An inner wall of the storage bin 7 has a smooth cylindrical or conical structure, and the part to be connected with the rotary drum 8 has a flange structure, fixed by bolts and pins, which is secure and convenient for replacement and maintenance; an outer wall of the storage bin 7 is provided with a grid-shaped reinforcing plate to improve the rigidity and strength of the storage bin and also increase the heat dissipation area.

The rotary drum 8 has a double-walled, multi-chamber structure, provided with a plurality of cooling agent such as steel balls and process cooling water, which can perform ball cooling—crushing— water spray cooling—water immersion cooling sequentially on the high temperature steel slag entered therein, the cooled and crushed tailings are led out from the tube in batches with the rotation of the tube and enter the subsequent conveying equipment.

The front supporting roller equipment 12 comprises two sets of roller and roller stand, forming into a V-shape to engage with a front-end supporting ring of the rotary drum 8; the rear supporting roller equipment 15 comprises two sets of roller and roller stand, forming into a V-shape to engage with a rear end supporting ring of the rotary drum 8. The front supporting roller equipment 12 and the rear supporting roller equipment 15 work together to supporting the rotary drum 8 and the storage bin 7 to rotate flexibly along an axis. The front supporting roller equipment 12 and the rear supporting roller equipment 15 are provided on the shared base 13, which are fixed by a positioning equipment and can be adjusted according to the actual needs to ensure that the angle B of the axis of the tube is correct and each set of rollers can engage with the corresponding supporting ring tightly.

The shared base 13 with positioning function is an integral steel structure platform with a certain rigidity and strength to ensure that the front supporting roller equipment 12 and the rear supporting roller equipment 15 are in the same plane and the supporting surface would not be tilted due to foundation settlement. The shared base 13 is provided with the positioning equipment for supporting the roller equipment, which can adjust the front supporting roller equipment 12 and the rear supporting roller equipment 15 conveniently, facilitating the positioning process.

The transmission mechanism 14 comprises a driving motor, a shaft coupling, a reducer, a universal shaft, a pinion shaft, a large ring gear and a base, the pinion shaft is suspended flexible on the large ring gear of the rotary drum by a towing mechanism, and the flexible transmission of the rotary drum is achieved by the universal shaft and the suspension mechanism of the pinion shaft to ensure that the pinion shaft can engage with the large ring gear tightly and the damage on the tooth surface caused by the vibration of the rotary drum can be avoided.

The slag conveying and storing system comprises a combined conveyor 21, a first vibrating screen 22, a slag steel trolley 23, a bucket elevator 24, a second vibrating screen 25, an iron remover 26, a temporary slag bin 27, a temporary slag steel bin 28, a transport truck 29, etc. The combined conveyor 21 comprises an apron conveyor and a scraper conveyor, where the upper apron conveyor is responsible for conveying most of the granular slag and the lower scraper conveyor is responsible for conveying the fine granular slag that falls from the gap of the apron conveyor, the two conveyors are fixed together and sealed in a casing, which is simple and clean. The first vibrating screen 22 not only can separate the large particle slag steel and transport it away by the slag steel trolley 23, improving the efficiency of resource utilization and preventing the large particle slag steel from impacting and jamming on the subsequent equipment, but also can convey the slag after preliminary screening into the bucket elevator 24 in a relatively even way. The second vibrating screen 25 and the iron remover 26 is responsible for screening the slag steel and separating iron from the slag, the steel slag is magnetically separated and screened online and conveyed into the corresponding temporary slag bin 27 and temporary slag steel bin 28 respectively. The product tailings in the temporary slag bin 27 and the slag steel in the temporary slag steel bin 28 are discharged regularly and delivered to the user by the transport truck 29 directly to achieve the environmentally friendly and resource-efficient processing where the slag does not fall to the ground.

The exhaust emission and purification system comprise a gas collection hood