SU1622311A2 - Apparatus for producing gravel-like slaf pumice - Google Patents

Abstract

The invention relates to the industry of building materials and mineral fertilizers, ferrous metallurgy, and can be used for the extraction of substantially similar in-varnish pumice from blast furnace, electrothermophosphorus, and some ferroalloy alloys. The purpose of the invention is to increase productivity and reliability in operation, simplify operation and save energy resources, as well as to achieve an explosion-proof safety of the slag melt. The facility for the production of grill-like slag pumice includes a sub-cool-chin-plate nopovozdushny porn-zltor with a screen, which is next to the barrel of the drum cooler. The inclination of the screen plane is made in a vertical plane at an angle of 70-85 ° & to the axis of the refrigerator drum, and in the horizontal plane - at an angle of 30-45. 5 il.

Description

The invention relates to the industry of building materials and mineral fertilizers, ferrous metallurgy, can be used for the production of gravel-like slag pumice from blast furnaces, electrothermophosphorus and some ferroalloy slags and is an improvement of the device according to the author. St. N 1404485.

The aim of the invention is to increase productivity and reliability in operation, simplify operation and save energy, as well as achieving explosion safety.

FIG. 1 shows the proposed device, a longitudinal section; on

FIG. 2 - the same, longitudinal section; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2; in fig. 5 shows the node I in FIG. 2, The device includes a hydraulic chute 1, a water-air nozzle 2, and an acceleration chamber 3. The hydrogel and the dispersal chamber are covered with water jackets 4. X are connected to the bottom with water supply 5 and from above drainage 6 nozzles. In the upper part of the front torn water jacket of the acceleration chamber there is a steam outlet hole, in which there are nozzles 7. From two sides water jacket of the acceleration chamber waste circulation and circulating nipples 8. Inner31

Its space of the water jacket of the raegon chamber is divided by two longitudinal partitions 9 into upper and lower cavities. One longitudinal partition is located below, and the other is above the circulation fittings.

Together, all of these elements make up the air-water porous slag melt.

Tubular consoles 10 connected by tubular bridge 11 are attached to circulating nipples. The bridge is in a horizontal plane and forms an angle of 30-45 ° with the axis of the acceleration chamber. At the same angle, the plane of the screen is oriented in space. At the same time, the working surface of the screen 12 faces the part of the inner surface of the housing 13 of the drum cooler, which is lowered during rotation. In addition, the screen plane in the longitudinal vertical plane forms an angle of 70-35 ° with the axis of the drum cooler, and an angle of 30-45 in the horizontal plane. In the wall of the tubular lintel there are holes in which longitudinal 14 and inclined 15 water inlets are inserted facing the screen. The gusset plate 16 is fixed on the jumper, and the gadget 17. is fixed on the screen. They are interconnected with the possibility of changing the screen inclination.

Other structural elements of the device (compaction, bandages, drive, catchment basins, etc.) are included in the required set of structural elements of the water-air veneer and drum cooler for the production of gravel-like slag pumice.

The device works as follows.

The water is fed into the water inlets of the 5 water jackets of the hydraulic head and the acceleration chamber. Water from the hydro-galling shirts after flowing around the surfaces heated by the gshak flows immediately through the drainage fitting 6. Water jacket 4 of the chamber 3 times 3 times the water flows through the corresponding water supply fitting and flows along the lower part of the inner space of the water jacket. Through one of the two circulation fittings 8 water flows through the pipes14

through the jumper 11 and through the second tubular console, through the second circulation fitting, it returns to the water jacket of the acceleration chamber, but already in the upper part of its volume. During the circulating period, water washes the exposed surfaces of the acceleration chamber, consoles and jumpers. A certain amount of water flows out through replaceable nozzles at the lintel. One part of the water flows out of the longitudinal nozzles 14 and irrigates the inner surface of the body of the blanched refrigerator and the slag mass outside the screen. Another part of the water flows through the inclined nozzles 15. Onp cools the screen and, in principle, evaporates. Its remains flow down to the base of the screen onto the surface of the slag mass converging from it.

Due to the inclination of the screen in a vertical plane, water is evenly distributed over the surface of the screen and ensures its reliable cooling. Increasing the angle beyond the boundary of 85 ° will cause a noticeable deviation of the trajectory of the slag particles downwards, which will lead to the reunion of the particles in the monolith in the lower part of the innermost space of the drum cooler body in alignment with the screen surface and reduce the capacity of the installation. A decrease in the inclination angle of less than 70 ° will lead to a deterioration of the cooling of the screen.

Water vapor released from the cooling water is removed from the water jacket of the acceleration chamber through the steam outlet nozzles 7. Along with the steam, a small amount of cooling water comes out, the stream of which falls on the surface of the slag mass, which comes off the screen.

Slag melt from a funnel (not shown) flows into a hydroglobe 1, where it is poured by jets of water. A flat stream of porous silt leaves the hydro-chute and intersects with the air flow coming out of the water-air nozzle 2. The air disperses its fluid porous slag mass, as well as feeds and drags the slag particles and water into the acceleration chamber. From it, particles of slag and water are emitted in a gradually expanding ms air flow. At some distance from the outlet of the acceleration chamber,

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which is determined by the technological requirements of the process, the air flow, the slag particles and the bottom meet the surface of the chkrach, which deflects them in that part of the BiryipeKHeri surface of the housing. 13 drum cooler, which, when it rotates the lowering t. There is a surge of more plastic particles of ilak, as well as water, on this surface. The sweep is accompanied by the reunion of particles: the plc is due to the still mobile mountainous mass, as well as to the capturing of water particles, which causes the addition of slag perionization.

Under the influence of forces, grgvitatsin and inertia movements, and air pressure of the slag mass and not reunited individual parts of the slag, make a complex spiral movement (Vsz and VTERED), limited to the inner cylindrical surface of the drum cooler. Thanks to this, the ishchnova mass quickly goes beyond the threshold of the screen, freeing the place of the incoming one after.

At the same time, the slag mass is lowered — from below, zone 1 is actively concerned with the effect of the air flow — is placed in the lower part of the internal volume of the drum cooler body. The loss in speed imparted by the energy of the air flow, the zinc mass further moves only due to the rotation and tilting of the body of the drum cooler.

3 this time, the process of forming the porous structure of the slag mass is completed, which makes it possible to intensify its cooling. This is achieved by irrigating it with jets of water coming out of the longitudinal heads and flowing from the surface of the screen. Further, the technological process of production of gravel-like slag pumice proceeds in the usual way.

Therefore, the injection of tilac particles onto the lateral portion of the inner surface of the drum cooler body prevents the formation of a slowly moving array of porous mass directly to the target of the lower edge of the screen. At the same time, the array of the aerated galaxy does not delay it.

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movement on the Most SEG in the screen. In addition, it does not prevent the free longitudinal movement of air flow, that | allows you to reduce the speed of eto you -.odod m camera happy to gon iodovo-shower device. In addition to this, if in the slag melt there are inclusions of a gip metal, then oi will first fall on the top of the shell, where the drum cooler cannot be delayed. This is the case of RETAILING her encapsulation with liquid metal and explosions.

Increase the angle on the screen. The grids of the 30–45 ° boundary will lead to a significant loss of velocity of the particles of the lllt and their sedimentation at the base of the screen, and a decrease in the ULF will lead to excessive cooling of the slag particles and the deterioration of their interconnected porous mnss. In turn, the bulk density of gravel-like slag pumice and its deterioration is increased - the structure.

Compared to the known, the proposed device allows increasing the capacity by about 25%, reducing the electricity costs for supplying air to the water heater by 5-10%, simplifying operation due to easier repair work, increasing reliability of operation by reducing the sensitivity to temporary overloads slag melt. The danger of explosions from encapsulating water accumulations with liquid metal is eliminated.

Claims (1)

Invention Formula Device for the production of gravel-like slag pumice stone St. No. 1404485, characterized in that, in order to increase productivity and reliability in operation, simplify operation and save energy resources, as well as achieve air safety, the working surface of the screen is deployed, forming a horizontal angle of 30-45 ° with the longitudinal axis of the drum cooler, in vertical 70-85 °. 1 eight eight Phage. II, Rogupich Figm Compiled by V. Tsvetkov Tehred M. Myken 8 Yu 7 111P / / // / / Proofreader M.Sharoshi