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Dry granulation apparatus of blast furnace slag using continuous thin single-layer hot sprinkling and application method thereof

A dry granulation and blast furnace slag technology, applied in the direction of recycling technology, etc., to achieve the effect of speeding up the diffusion rate, facilitating crushing and heat exchange, and improving heat exchange efficiency

Active Publication Date: 2018-08-24
吕艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Centrifugal granulation, which has been studied more at present, is still in the research stage, although it has large processing capacity, strong adaptability, good granulation effect, and relatively simple equipment.

Method used

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  • Dry granulation apparatus of blast furnace slag using continuous thin single-layer hot sprinkling and application method thereof
  • Dry granulation apparatus of blast furnace slag using continuous thin single-layer hot sprinkling and application method thereof
  • Dry granulation apparatus of blast furnace slag using continuous thin single-layer hot sprinkling and application method thereof

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Embodiment Construction

[0032] Such as figure 1 As shown, the continuous thin-layer single-layer hot-splash blast furnace slag dry granulation device of the present invention includes a grate machine, a cooler, a slag ditch, a crusher 19 and a transport lifting device 20 . The grate is arranged directly below the ditch head of the slag ditch 9 of the blast furnace 16, with a height difference of about 0.2-0.5m, and its centerline is on the same plane as the ditch head centerline. Such as figure 2 As shown, the chain grate is installed with a positive slope of 2~5° to the horizontal flow direction of the liquid slag, and the rotation direction of the chain grate is opposite to the horizontal flow direction of the liquid slag in the horizontal direction, and its rotation speed must ensure that the liquid slag falls to the surface of the chain grate Finally, it will not be left in the water distribution area at the tail of the machine, and the size should be equal to the horizontal flow velocity of th...

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Abstract

The invention relates to a treatment method of blast furnace slag from blast furnace smelting production, in particular to a dry granulation apparatus of blast furnace slag using continuous thin single-layer hot sprinkling and an application method thereof. The apparatus comprises a grate unit, a cooler, a slag trough, a crusher and a conveying lifter and is characterized in that the grate unit isarranged below the head of the slag trough, the grate unit is mounted at a positive angle of 2-5 degrees relative to a horizontal flowing direction of liquid slag, a condensing column is arranged above the grate unit, a grate plate of the grate unit is composed of a plurality of chain plate groups connected together, a water distributor and an upper cooler are arranged above the grate unit, the crusher is arranged below a head scraper of the grate unit, and a guide plate and the conveying lifter are arranged below a collection channel. Blast furnace slag can be quickly set and can be granulated and loosened via multiple pores, the high temperature is still retained which helps recycle subsequent heat, and the apparatus has the advantages of high efficiency, low energy consumption, and good convenience of arrangement.

Description

technical field [0001] The invention relates to a treatment method for blast furnace slag produced by blast furnace smelting, in particular to a dry granulation device for blast furnace slag by a continuous thin-layer single-layer hot-splashing method and a use method thereof. Background technique [0002] Blast furnace slag is a by-product of blast furnace smelting, its main components are CaO, MgO, SiO 2 and Al 2 o 3 , the general temperature is 1450 ~ 1550 ℃. Blast furnace slag can be quenched to obtain amorphous glass phase, has good hydraulic activity, can be used as cement raw material, and has high economic value, so it is widely used by various metallurgical enterprises, such as Lhasa (RASA) method and INBA (INBA) ) method and other water quenching processes, while the dry granulation process is rarely used, most of which are still in the research stage. The basic principle of the water quenching process is to contact the high-temperature slag with water, so that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C21B3/08
CPCC21B3/06C21B3/08Y02W30/50
Inventor 吕艳张超
Owner 吕艳
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