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Preparation of vanadium slag powder by dry centrifugal granulation

A centrifugal granulation and vanadium slag technology, applied in the field of metallurgical engineering, can solve the problems of high energy consumption and high production cost in the grinding process, and achieve the effects of low production efficiency, reduced energy consumption and long time consumption.

Active Publication Date: 2018-12-21
CHONGQING UNIV
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Problems solved by technology

The fine grinding of vanadium slag is beneficial to the conversion of soluble vanadium. However, due to the dense vanadium iron spinel structure in the vanadium slag, the vanadium slag is very hard. The grinding process consumes a lot of energy and the production cost is high.

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  • Preparation of vanadium slag powder by dry centrifugal granulation
  • Preparation of vanadium slag powder by dry centrifugal granulation

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Embodiment Construction

[0027] The present invention will be described in further detail below.

[0028] see figure 2 The preparation of vanadium slag powder by dry centrifugal granulation method comprises the following steps:

[0029] S1: Centrifuge the molten state converter vanadium slag to obtain high-temperature vanadium slag particles; specifically, the molten state converter vanadium slag flows through the tundish to the high-speed rotating granulator, and under the action of centrifugal force, the molten state converter vanadium slag splashes and splits The molten droplets are gradually cooled and solidified during flight to obtain high-temperature vanadium slag particles.

[0030] As an optimization, according to the production practice at the enterprise site, the temperature of the molten converter vanadium slag is 1350°C to 1400°C. It contains a lot of sensible heat and has a high recycling value. The temperature of the high-temperature vanadium slag particles obtained in the S1 is 600...

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Abstract

The invention relates to a dry process centrifugal granulation method for preparing vanadium slag powder. The dry process centrifugal granulation method comprises the following steps: S1, rotary furnace vanadium slag in a molten state is centrifuged and high-temperature vanadium slag particles are obtained; S2, the high-temperature vanadium slag particles obtained in the S1 are subjected to heat exchange with room temperature air, the vanadium slag particles after the heat exchange are collected, and hot air after the heat exchange is collected; and S3, the vanadium slag particles obtained after the heat exchange in the S2 are ground, and the vanadium slag powder is obtained. The vanadium slag is very hard, and if the vanadium slag is crushed by a crusher directly, the energy consumption is high, and the service life of the crusher is very short. According to the dry process centrifugal granulation method, the rotary furnace vanadium slag in the molten state is directly granulated to be the vanadium slag particles which are 0.5-3mm in particle sizes, and the traditional massive vanadium slag crusher crushing process is replaced, so that the slag particles having smaller sizes can be obtained, and the energy consumption can be reduced substantially.

Description

technical field [0001] The invention relates to the technical field of metallurgical engineering, in particular to a dry centrifugal granulation method for preparing vanadium slag powder. Background technique [0002] Vanadium is an important strategic value element, known as "the monosodium glutamate of modern industry". It has the advantages of hard texture, high melting point, non-magnetic, good toughness, etc. It is widely used in the fields of iron and steel industry, chemical industry, aerospace industry, light textile industry and medicine. Vanadium mainly occurs in vanadium-iron-magnetite in nature, and the Panzhihua region of my country is rich in vanadium-titanium magnetite resources. The common process for recovering vanadium resources from vanadium-iron-magnetite is to reduce vanadium-iron-magnetite to obtain vanadium-containing molten iron, then the vanadium in the vanadium-containing iron is oxidized into the slag, and then extracts V from the vanadium slag. ...

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 吕学伟贺文超李雪琴吕学明严志明邱杰党杰张颖异白晨光
Owner CHONGQING UNIV
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