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Size graded furnace slag granulating device

A particle size classification and granulation technology, which is applied in solid separation, chemical instruments and methods, and filtration and screening, can solve the problems of large particle size of granulated slag, low granulation efficiency, and reduced fluidity of slag film.

Active Publication Date: 2018-11-13
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 object of the present invention is to provide a slag granulation device with particle size classification to solve the problems of the granulated slag produced by the centrifugal method in the prior art that the granulated slag has a relatively large particle size and low granulation efficiency. The film is in a liquid state, preventing chilling and reducing the fluidity of the slag film, inhibiting the generation of the slag film, and reducing the particle size of the granulated slag

Method used

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  • Size graded furnace slag granulating device
  • Size graded furnace slag granulating device
  • Size graded furnace slag granulating device

Examples

Experimental program
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Embodiment 1

[0038] combine Figure 1~4 As shown, a slag granulation device for particle size classification in this embodiment includes a slag loading unit 100, a granulation unit 200, a screening unit 400, and a casing 500. The granulation unit 200 is arranged in the casing 500. The granulation The liquefaction unit 200 includes a rotating slag pan 210 and a cooling mechanism 220, the rotating slag pan 210 is provided with a heating element 211, and 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 slag loading unit 100 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; the screening unit 400 is located at the bottom of the housing 500 At the outlet 520 , the screening unit 400 is provi...

Embodiment 2

[0044] 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

[0053] The basic content of this embodiment is the same as that of Embodiment 1, except that: a raised surface 216 is provided between two adjacent slag troughs 212, and baffles 217 are provided at both ends of the circumferential edge of the raised surface 216, 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 plate 217, preventing it from slag discharge from the sla...

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Abstract

The invention discloses a size graded furnace slag granulating device, and belongs to the technical field of blast furnace slag utilization. The size graded furnace slag granulating device comprises aslag loading unit, a granulating unit, a screening unit and a housing, wherein the granulating unit is arranged in the housing, and comprises a rotating slag pan and a cooling mechanism; a heating component is arranged on the rotating slag pan; a slag particle shower nozzle, a liquifying shower nozzle and an atomizing shower nozzle of the cooling mechanism are arranged on the peripheral edge of the rotating slag pan; the slag loading unit comprises a slag pot and a slag outlet channel; the slag outlet channel is formed in the bottom of the slag pot; and an outlet of the slag outlet channel isformed above the rotating slag pan. A slag film is formed on the edge of the rotating slag pan, and blast furnace slag on the edge of the rotating slag pan is heated and thermal-insulated by the heating component, so that the slag film can be maintained at a higher temperature, the slag film formation is inhibited, and the reduction of the particle size of granulated slag is facilitated; the screening unit is positioned at the discharging opening below the housing, and is used for screening the granulated slag to obtain size graded granulated slag, and the resource 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 slag granulation device for particle size classification. 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 fur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C21B3/08B07B1/28
CPCB07B1/28B07B2201/04C21B3/06C21B3/08Y02W30/50
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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