SU749923A1 - Device for granulating dispersed materials - Google Patents

Description

(54) DEVICE FOR GRANULATION OF DISPERSE The invention relates to the agglomeration of finely divided materials and can be used in ferrous and nonferrous metallurgy in granulating dispersed charges containing approximately 80 percent or more of magnetic materials. Drum granulators are known for granulating fine material, in which, together with the finished granules, it sometimes forms up to 400% of the fine fraction that makes up the circulating load on the pelletizer 11. Various screens and conveyor systems are used to isolate it, which is significantly more difficult. em and increases the cost of production of granules. .. - The closest in technical essence and the achieved result is a device for granulating powdered materials, including a rotating drum, inside which is mounted a transporting device in the form of blades, mounted on a longitudinal bar to return the non-woven part of the material to the loading end of the drum (2. MATERIALS However A fixed transport device in the form of blades is practically unable to return small fractions to the end of the drum, and the aphid dazit and destroys the This device can increase the residence time of the fine fractions in the drum, but it cannot grow them to the size of marketable size due to the absence of jaw fractions in the mash at a distance of about one meter or more from the loading end of the drum. The known load from 100 to 400% of the known device cannot regulate the residence time of the small fractions in the drum, not to mention the addition of them. The pelletizing process is possible only if there is a crumpled fraction, which is only at a distance of 1-3 m from the point of feed of the granulated pulp into the drum. The purpose of the invention is to simplify the technological scheme for the production of pellets. This goal is achieved by the fact that in the granulating device, including a rotating drum, inside which a transporting device is shifted to return the circulating load to the discharge end of the drum, the unloading end of the drum is equipped with an elevator wheel and an adjustable magnetic (electromagnetic) system located at the bottom and top a quarter of the way it rotates on its side. The sector angle occupied by the adjustable magnetic (electromagnetic) system is deflected from the vertical axial plane of the drum by 10-15 ° and is in the range of 75-105 °. An angle of 10-15 is determined as follows. The granulated material rotating at a constant barab speed during movement is displaced, (, or vertical axis along the rotation by 7-10 °, which is confirmed by laboratory measurements and parameters of the movement of material in

drum at the Mikhailovsky-druma magnetic (electromagnetic) system

GOK and Sbkolovsko-Sarbaiskogr GOK. Following is located in the lower and upper quarters x.

Due to the segregation of the material during its movement of the rotation of the drum 1 from its outer groan to the drum, the coarse fractions move the crowns at the discharge end. Sector angle

the lower part of the flow, and the smaller ones raised, occupied by an adjustable magnetic (electromagnet up. Magnetic (electromagnetic) system) system, is rejected from the vertical

The ma is designed for lifting small fractions / axial plane of the drum by 10-15 ° and, therefore, it is advisable to arrange it with a deviation angle of 10-15 ° from the vertical axial plane of the drum.

The limits of the sector angle, occupied by the magnet-zo b vibrators. Inside the drum 1 by a mounted (electromagnetic) system, the transport device 4 is determined, depending on the geometrical dimensions of the ban bar, the rotation speed of the drum, its degree of filling with the material, the properties of the face: (material size and a predetermined grain size range of ready-made raw granules. For industrial pelletizing of iron ore concentrates, drum pelletizers with a diameter of 2–4 m and a length of 7–14 m have been used in the industry, which work with a filling degree of 0.5 to 3%. For example, for A diameter of 3.6 meters, with a length of 3% of them, the angle of the sector of the magnetic (electromagnetic) system is 105 °. The length occupied by the magnetic (electromagnetic) system depends on those parameters, By and the angle of the sector occupied by the system that the beginning of the separation of materials by fraction of lt must begin before the angle of dumping of materials at the drum exit and before additional forces begin to act on the material, with the top catching the material in the course of movement of the material along the slope. Therefore, the length of the section is chosen equal to the sum of the projects of the slope line and the line of friction angle when the material moves along the drum a. And for li3BecTHbix types of drums, it is 0.5-1.5 m. For example, for a drum

Claims (2)

It ranges from 75-105 °. The elevator wheel is mounted on shock absorbers to the outer surface of the drum and can be provided with a diameter of 3.6 m, for 14 m and a degree of filling. 3% of the section occupied by the magnetic (electromagnetic) system is 1.5 m. In FIG. 1 shows a device for granulating dysggers materials, a general view; in fig. 2 - the same view from the discharge side of the drum conid; in fig. 3 diagram of the movement of the material in the drum without the mite - (electromagnetic) system; in fig. 4 - the same, with a magnetic (electromagnetic) system; in fig. 5 is a diagram of unloading material from a drum without a magnetic (electromagnetic) system; in fig. 6 - with a magnetic (electromagnetic) system. The device includes a rotating drum 1, the discharge end of which is equipped with an adjustable magnetic (electromagnetic) system 2 and an Elevator wheel 3. An adjusting conveyor, sweeper, vibrating chambers, etc. which is located in the upper part of the drum on the supporting beams 5. In order to unload the pellets at the discharge end of the drum, estrus is provided b. A funnel 7 is provided for receiving the shedding circulating and young load from the elevator wheel to the transporting device. The device operates as follows. When granulating dispersed liichts containing approximately 80 percent or more of magnetic materials, granules of a wide range of size, which have magnetic properties, are applied to the discharge end tilted at an angle of 6 or more degrees of drum 1. The intensity of the magnetic (electromagnetic) system 2 is adjusted to lift granules of a certain size. Commercial size pellets flow in the lower part of the stream. The small granules under the action of the magnetic (electromagnetic) system rise with the wall of the rotating drum and outside the system under the force of gravity padshots in the area of the elevator wheel 3 (due to the angle of inclination of the drum). Then, material is poured out of the scoop through the funnel 7 onto the conveying device 4 and fed to the loading end 5.7 of the drum or to another set point to reorder it with a loadable dispersed charge. The pellets of commercial size of the drum are discharged in heat 6 and are transported to further processing. The invention makes it possible to exclude from the technological process of the production of granules large-sized screens and conveyor belts of the circulation load. The elimination of croup foot equipment contributes to a reduction in capital expenditures by reducing the construction volume of production plants and significantly reducing the cost of operating costs without reducing the commercial quality of the granules. The compactness of the proposed device facilitates the operational regulation of the process of the production of pellets. The economic effect from the use of the proposed invention is 860 thousand rubles. Claim 1. A device for granulating dispersed materials containing a drum with a raised door, inside which transporting mechanical equipment is placed to return the non-woven part of the material to the charging end of the drum, characterized in , in order to simplify the technological scheme for the production of pellets, the unloading end of the drum is equipped with an elevator wheel and an adjustable magnetic system located in the lower and the upper quarter of the drum in the direction x vrasheni with its outer side. 2. The device according to claim 1, about 6 and 6 with the fact that the magnetic system is away from the vertical axial plane of the drum by 10–15 and locks the sector angle within 75–105 °. Sources of information taken into account during the examination 1. German patent number 971754, cl. 40 L 1/20, 1960. 2. USSR author's certificate number 327937, cl. On 01 J 2/12, 1969. Step.5 phage. / IllHLLf LLHU.I i / ys / JO- tre.na.