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Cyclic granulation method of KR desulfurizing agent

A desulfurizer and granulation technology, applied in the field of metallurgy, can solve the problems of complex process, many processing equipment, and inability to guarantee the quality and particle size of the desulfurizer, and achieve the effect of improving the degree of industrialization, reducing consumption, and reducing labor costs.

Inactive Publication Date: 2020-09-15
SHAGANG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this application, the lime is treated separately and mixed directly with fluorite, but the quality and particle size of the desulfurizer after mixing cannot be guaranteed; at the same time, there are many lime treatment process equipment and the process is relatively complicated

Method used

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  • Cyclic granulation method of KR desulfurizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Batching stage: lime and fluorite are batched in proportion, specifically: lime raw materials (within 20mm) are first crushed and then enter the bucket elevator, and then screened by vibrating sieves, qualified lime raw materials enter the lime bin, and then enter the quantitative Feeder: Fluorite raw material (within 20mm) first enters the fluorite receiving hopper, then enters the bucket elevator, then enters the fluorite bin, and finally transports it to the quantitative feeder.

[0026] (2) Mixing stage: After the lime and fluorite raw materials are distributed in proportion, they are sent to the mixer collectively; after the raw materials are mixed, they enter the mixing silo.

[0027] (3) Rolling stage: the raw materials in the mixing bin are separated by the buried scraper conveyor, and then enter the roller press for rolling.

[0028] (4) Primary granulation stage: Send all rolled flakes to the crushing granulator for centralized primary granulation.

[002...

Embodiment 2

[0032] (1) Batching stage: lime and fluorite are batched in proportion, specifically: the lime raw material goes through the belt conveyor to the crusher, then goes to the vibrating screen through the bucket elevator, and then goes to the lime bin through the belt conveyor and then is given quantitative feeding The fluorite raw material goes to the bucket elevator through the fluorite receiving hopper, and then goes to the fluorite warehouse through the belt conveyor, and finally is given to the quantitative feeder.

[0033] (2) Mixing stage: After the lime and fluorite raw materials are distributed in proportion, they are sent to the mixer through a belt conveyor; after the raw materials are mixed, they enter the mixing silo.

[0034] (3) Rolling stage: the raw materials in the mixing bin are separated by the buried scraper conveyor, and then enter the roller press for rolling, and the rolled pieces fall into the belt conveyor uniformly.

[0035] (4) Primary granulation stage...

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Abstract

The invention discloses a cyclic granulation method of a KR desulfurizing agent. The cyclic granulation method of the KR desulfurizing agent comprises the following steps that firstly, powder particlelime and fluorite are mixed according to a mixture ratio; then, granulation is performed after rolling pressing; next, sieving is performed; and the KR desulfurizing agent is obtained. By the cyclicgranulation provided by the invention, more than 99.5 percent of the KR desulfurizing agent can be produced into qualified products conforming to the granularity requirements, so that the utilizationrate is improved; and the consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a KR desulfurizer circulation granulation method. Background technique [0002] Hot metal pretreatment is an important technical means that iron and steel enterprises usually use to improve product quality and develop and produce high value-added products. At present, the following two desulfurization methods outside the molten iron furnace are commonly used at home and abroad, the injection method and the KR mechanical stirring method. The KR mechanical stirring method is widely used because of its easy operation, low unit consumption of desulfurizer, stable desulfurization effect and good stirring kinetic conditions. [0003] The particle size of KR desulfurizer is closely related to the desulfurization amount and desulfurization rate of molten iron. Cui Xiwen et al. disclosed a process flow of KR desulfurizer. First, the quicklime produced by the lime kiln is s...

Claims

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Application Information

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IPC IPC(8): B02C19/00B02C21/00B02C23/08C21C7/064C21C1/02B01J2/22
CPCB01J2/22B02C19/00B02C21/00B02C23/08C21C1/02C21C7/064Y02P10/20
Inventor 王平马智勇毛一标
Owner SHAGANG GROUP
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