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High-temperature liquid steel slag atomization laval spray pipe, atomization air box and atomization method

A Laval nozzle and liquid steel slag technology, applied in the field of metallurgical industry, can solve the problems of insufficient injection distance and insufficient air cooling time, and achieve excellent injection effect, good atomization effect and good molding effect.

Inactive Publication Date: 2019-02-15
LIANGSHAN RUIJING ENVIRONMENTAL PROTECTION RESOURCE DEV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

On the other hand, the spraying distance is not far enough, and the cooling time in the air is not long enough. Although the droplet steel slag is formed, it will stick together due to the high temperature after landing, forming a lump.

Method used

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  • High-temperature liquid steel slag atomization laval spray pipe, atomization air box and atomization method
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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing.

[0022] Such as figure 1 As shown, the high-temperature liquid steel slag atomizing Laval nozzle of the present invention, the lumen of the Laval nozzle 1 is axisymmetric about the center line, and the lumen of the Laval nozzle 1 is an inlet section 11 and a narrowing section 12 in sequence along the injection direction. , parallel section 13 and outlet section 14, according to figure 1 In the direction shown, from left to right is the spraying direction. Wherein, the diameter of the inner tube wall of the inlet section 11 is 42 mm, and the length of the inlet section 11 is set according to actual needs, for example, the tube length of the inlet section 11 is 12 mm. The length of the inner pipe wall of the narrowing section 12 is 14 mm, and the inner pipe wall of the narrowing section 12 is a quarter arc with a radius of 14 mm. The connection between the inner tube wall o...

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Abstract

The invention discloses a high-temperature liquid steel slag atomization laval spray pipe, an atomization air box and an atomization method, relates to the field of metallurgy industry, and aims at achieving the technical purpose of providing a laval spray pipe suitable for atomizing high-temperature liquid steel slag. According to the adopted technical scheme, according to the high-temperature liquid steel slag atomization laval spray pipe, a pipe cavity of the laval spray pipe is symmetric relative to the center axis, the pipe cavity is sequentially divided into an inlet section, a narrowingsection, a parallel section and an outlet section in the spraying direction, through the optimization design of various sections, airflow can be accelerated to the ideal speed, the high-temperature liquid steel slag is atomized, and a good blowing effect is achieved. The invention further provides the high-temperature liquid steel slag atomization air box, the problem that an existing air box isin poor in atomization effect on high-temperature liquid steel slag is solved, according to the adopted technical scheme, the high-temperature liquid steel slag atomization air box comprises a box body, a hole is formed in one side of the box body, and the laval spray pipe is arranged in the hole of the box body.

Description

technical field [0001] The invention relates to the field of metallurgical industry, in particular to a bellows and an atomization method for atomizing molten steel, liquid steel slag and the like. Background technique [0002] In the field of metallurgy, it is often necessary to break raw materials that are liquid at high temperature and solid at normal temperature, when they are liquid at high temperature, they are broken into small droplets by high-speed airflow, cooled in the air, and form uniform spherical solid particles after landing. The process is called atomization, also known as "air crushing". [0003] The atomization treatment method for the liquid steel slag just out of the furnace is: spray with compressed air to disperse it in the air, and form atomized slag balls after falling to the ground, also known as "PS balls". In this process, the device that directly provides compressed air to achieve spraying is the bellows. The design of the bellows is very critic...

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 青光红王彬彭绍强赵杰高亮周文董伦先孙堂钦
Owner LIANGSHAN RUIJING ENVIRONMENTAL PROTECTION RESOURCE DEV
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