A device for blast furnace slag rotary granulation

A blast furnace slag and granulation technology, which is applied in the field of blast furnace slag utilization, can solve the problems of large particle size of granulated slag, low granulation efficiency, and reduced fluidity of slag film.

Active Publication Date: 2020-08-04
扬州兄联冶金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a blast furnace slag rotary granulation device to solve the problem of large particle size and low granulation efficiency of blast furnace slag produced by the centrifugal method in the prior art. The device maintains the slag by heating components The film is in a liquid state to prevent chilling and reduce the fluidity of the slag film, reduce the generation of slag film, and reduce the particle size of granulated slag

Method used

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  • A device for blast furnace slag rotary granulation
  • A device for blast furnace slag rotary granulation
  • A device for blast furnace slag rotary granulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] combine Figure 1~4 As shown, a blast furnace slag rotary granulation device in this embodiment includes a slag loading unit 100, a granulation unit 200 and a casing 500; the granulation unit 200 is arranged inside the casing 500, and the granulation unit 200 includes a rotary The disc 210 and the cooling mechanism 220, the rotating slag pan 210 is provided with a heating element 211, the slag nozzle 221, the liquefaction nozzle 222 and the atomizing nozzle 223 of the cooling mechanism 220 are arranged on the peripheral edge of the rotating slag pan 210; the above-mentioned slag loading unit 100 It includes a slag tank 110 and a slag discharge channel 120 , the slag discharge channel 120 is arranged at the bottom of the slag tank 110 , and the outlet of the slag discharge channel 120 is located above the rotating slag pan 210 .

[0037] The blast furnace slag transported from the blast furnace is stored in the slag pot 110, and flows into the rotating slag pan 210 throu...

Embodiment 2

[0042] The basic content of this embodiment is the same as that of Embodiment 1, the difference is that: the slag nozzle 221 is arranged above the edge of the rotating slag pan 210. In this embodiment, there are 16 slag nozzles 221, and the slag nozzle 221 rotates along the The circumference above the edge of the slag pan 210 is uniformly distributed. In this embodiment, the slag nozzle 221 uses gas as a carrier to spray granulated slag with a smaller particle size to the edge of the rotating slag pan 210. The carrier for spraying granulated slag can also be other fluids such as water. The granulated slag with a small particle size is sprayed, so that the granulated slag with a certain kinetic energy and the blast furnace slag at the edge of the rotating slag pan 210 collide and fuse to grow up, so that the granulated slag that did not meet the resource utilization conditions before can be secondary produced Utilization; on the other hand, the slag film is broken through the i...

Embodiment 3

[0050] combine Figure 5 As shown, the basic content of this embodiment is the same as that of Embodiment 1, the difference is that a raised surface 216 is provided between two adjacent slag troughs 212, and stoppers are provided at both ends of the circumferential edge of the raised surface 216. plate 217, so that the baffle plate 217 is located on both sides of the slag outlet of the slag flow tank 212, and the slag outlet of the slag flow tank 212 is the circumferential side 215. Its function is: the blast furnace slag located on the rotating slag pan 210 moves towards the edge of the rotating slag pan 210 under the action of centrifugal force, and part of the blast furnace slag flows out along the slag flow groove 212 through the slag outlet; On the convex surface 216, and then flow to the peripheral edge of the convex surface 216, when this part of the blast furnace slag moves to the peripheral edge position of the convex surface 216, it will be blocked by the baffle plat...

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Abstract

The invention discloses a blast furnace slag rotation pelletization device and belongs to the technical field of blast furnace slag utilization. The blast furnace slag rotation pelletization device comprises a slag accommodating unit, a pelletization unit and a shell, wherein the pelletization unit is arranged in the shell and comprises a rotary slag disc and a cooling mechanism; a heating elementis arranged on the rotary slag disc; a slag particle sprayer, a liquefaction sprayer and an atomization sprayer of the cooling mechanism are arranged on the circumferential side of the rotary slag disc; the slag accommodating unit comprises a slag tank and a slag discharging passage; the slag discharging passage is arranged at the bottom of the slag tank; the outlet of the slag discharging passage is positioned above the rotary slag disc; a slag film is formed on the edge of the rotary slag disc; and the heating element carries out heating and heat preservation on the blast furnace slag on the edge of the rotary slag disc to keep the slag film at a higher temperature and restrain formation of the slag film, so that reduction of the granularity of the pelletization slag is facilitated andresource utilization of the blast furnace slag is realized.

Description

technical field [0001] The invention relates to the technical field of utilization of blast furnace slag in the metallurgical industry, and more specifically relates to a blast furnace slag rotary granulation device. Background technique [0002] Blast furnace slag is a by-product of blast furnace ironmaking. After smelting various raw materials and fuels into the furnace, in addition to obtaining by-products such as molten iron (steelmaking pig iron or foundry pig iron) and blast furnace gas, gangue in iron ore and fuel Ash and flux are easy to form liquid slag in a high-temperature environment, generally at a temperature of 1350-1450°C, which is discharged through the slag port and the iron port. At present, blast furnace slag is one of the most important wastes in the iron and steel industry. Every ton of pig iron produces about 300-600 kg of blast furnace slag. According to statistics, in 2017, China's pig iron output was about 710 million tons, and blast furnace slag wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/06C21B3/08
CPCC21B3/06C21B3/08Y02W30/50
Inventor 王海军音正元常立忠吴巍
Owner 扬州兄联冶金科技有限公司
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