SU1252311A1 - Device for producing slag pumice - Google Patents

Description

one

The invention relates to the building materials industry, mineral fertilizers, as well as to the metallurgical industry and can be used for the production of slag pumice from blast furnace and phosphoric slags.

The purpose of the invention is to improve the quality of slag pumice, reduce overall dimensions and metal content, as well as facilitate operation

The drawing shows a device for a longitudinal incision.

A device for producing slag pumice comprises a slag melt finisher, for example, of an air-borne or hydro-screen type. In the pre-reliance porizer consists of a hydraulic chute 1, an air nozzle 2 and an acceleration chamber 3, which serves as an outstanding element of the porizer and through the neck 4 adjacent to the opening in the front end wall 5 enters the inside of the drum cooler 6, a screen is attached to the acceleration chamber using a console 7 8. On its back surface there are water nozzles 9, and behind it inside the drum there are longitudinal ribs 10.

The proposed design solution of the device provides improved quality of slag pumice, reducing overall dimensions and metal consumption, as well as facilitating the operation of the device.

YcTpoficTBo works as follows.

The slag melt from the slag ladle is poured into the hydroglobe 1 of the air porous water. An optimum amount of water is supplied to the slag for slagging (250 liters / ton). In the hydrogloss, the slag is penetrated by jets of water and porous. The water in the hydroglobine is not completely evaporated. Undigested technological water and easily mobile slag mass flow from the hydraulic chute into the chamber 3 acceleration. There, they are dispersed by the air flow, air-slag mixture is formed from the air nozzles. The semi-liquid slag particles and the sprayed water are carried by the air flow from the acceleration chamber inside the drum cooler and are thrown onto the screen surface. The semi-liquid slag particles are reunited on the screen surface into a viscous, mobile

523112

porous mass. Water particles get into it, capsules and subsequent particles of porous slag are evaporated and evaporated inside the slag volume, 5 which causes its additional polarization. From the screen, the porous slag mass falls under the force of gravity on the smooth inner surface of the drum cooler. Moving along the path along it, it goes beyond the limits of the smooth section and falls into the area where the longitudinal edges are located.

(5 The porous slag mass is captured by longitudinal ribs and self-shattering. In this case, it is uniformly irrigated with sprayed water coming from the nozzles 9.

20 Irrigation is supplied with water in the amount of 200 l / t slag. In this area of the drum cooler, the porous structure of the slag mass is already fully fixed. Therefore, irrigation with water ensures the required cooling of the slag processed and maintains the high quality of the pumice slag obtained.

2Q Placing the screen inside the cylindrical case of the drum cooler allows reducing the device's honeycomb, refusing (if there is one screen) the use of a steam and gas collecting chamber and (with two screens) significantly

reduce its size. Due to the rotation and tilting of the drum cooler, the drum self-cleaning of slag filaments, dust and fines occurs, which completely eliminates the use of manual labor, and attaching the screen to the emitting element of the slag melt facilitates disassembling and repairing the screen and allows cooling the screen if necessary. and process water. The presence of water nozzles on the back surface of the screen, directed toward the discharge end of the drum, reduces the amount of process water that enters the slag porisation. As a result, the quality of the slag pumice improves, the bulk density decreases and the compressive strength increases.

Lack of longitudinal ribs in the zone where the element is located

40

45

50

312523114

prier, console, to which the cut slag. This provides the pit screen, and the screen itself, makes unreliable operation of the device and simplicity, it is possible for sticking of porous service to them.

Claims (1)

A device for the production of slag pumice containing a disperser and a drum refrigerator with longitudinal ribs, characterized in that, in order to improve the quality of slag pumice, reduce the overall dimensions and metal consumption, as well as facilitate operation, it is equipped with a screen located inside the refrigerator and attached to the dispersant, on the back side of which water nozzles directed towards the discharge end of the drum are installed, while longitudinal ribs are placed in the direction of movement of the material behind the screen.