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A kind of environment-friendly submerged arc heat storage agent and preparation method thereof

A heat storage agent and environmentally friendly technology, applied in the field of steelmaking auxiliary materials, can solve the problems of increased damage to refractory materials, reduced steel quality, secondary oxidation, etc., to shorten refining time, reduce power consumption, and reduce secondary oxidation. Effect

Inactive Publication Date: 2017-07-21
鞍山天祥冶金材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the arc ionizes the air on the slag surface, which can easily cause nitrogen increase and secondary oxidation of molten steel, reduce steel quality, and aggravate refractory damage

Method used

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  • A kind of environment-friendly submerged arc heat storage agent and preparation method thereof
  • A kind of environment-friendly submerged arc heat storage agent and preparation method thereof
  • A kind of environment-friendly submerged arc heat storage agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Weigh 63 parts of limestone, 12 parts of magnesite, 8 parts of light-burned magnesia, 5 parts of barium carbonate, 5 parts of metallic aluminum, 2 parts of silicon carbide, 1 part of metallic silicon and 4 parts of water. Ultrasonic disperse the micron-sized magnesite for 1-10 minutes, screen the raw materials except magnesite into coarse particles, fine particles and fine powder, and then put the coarse particles and fine particles into the strong roller mixer in turn During the mixing process, start stirring, gradually add fine powder while adding water, and finally put the dispersed micron-sized magnesite into the mixer slowly, and mix evenly. The mixed material flows into the conveyor belt through the discharge port, and then enters the pressing bowl of the ball forming machine, and is pressed into balls to obtain environmentally friendly submerged arc heat storage agent 1. Then put the pressed balls in a natural and ventilated environment for 12 hours, and then dry...

Embodiment 2

[0049]Weigh 67 parts of limestone, 12 parts of magnesite, 8 parts of light-burned magnesia, 3 parts of barium carbonate, 3 parts of metallic aluminum, 2 parts of silicon carbide, 1 part of metallic silicon and 4 parts of water. Ultrasonic disperse the micron-sized magnesite for 1-10 minutes, screen the raw materials except magnesite into coarse particles, fine particles and fine powder, and then put the coarse particles and fine particles into the strong roller mixer in turn During the mixing process, start stirring, gradually add fine powder while adding water, and finally put the dispersed micron-sized magnesite into the mixer slowly, and mix evenly. The mixed material flows into the conveyor belt through the discharge port, and then enters the pressing bowl of the ball forming machine, and is pressed into balls to obtain the environmentally friendly submerged arc heat storage agent 2. Then put the pressed balls in a natural and ventilated environment for 12 hours, and then ...

Embodiment 3

[0051] Weigh 63 parts of limestone, 12 parts of magnesite, 8 parts of light-burned magnesia, 1 part of barium carbonate, 1 part of metal aluminum, 1 part of silicon carbide, 0.5 part of metal silicon and 4 parts of water. Ultrasonic disperse the micron-sized magnesite for 1-10 minutes, screen the raw materials except magnesite into coarse particles, fine particles and fine powder, and then put the coarse particles and fine particles into the strong roller mixer in turn In the process, start stirring, gradually add fine powder while adding water, and finally put the dispersed micron-sized magnesite into the mixer slowly, and mix evenly. The mixed material flows into the conveyor belt through the discharge port, and then enters the pressing bowl of the ball forming machine, and is pressed into balls to obtain the environmentally friendly submerged arc heat storage agent 3. Then put the pressed balls in a natural and ventilated environment for 10 hours, and then dry and dehydrate...

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Abstract

The invention relates to an auxiliary steelmaking material, in particular to an environment-friendly material and a preparing method thereof. The environment-friendly material is characterized in that a submerged arc heat accumulation agent comprises, by weight, 63-71 parts of limestone, 8-16 parts of magnesite, 7-9 parts of light calcined magnesia, 1-5 parts of barium carbonate, 1-5 parts of metallic aluminum, 1-3 parts of silicon carbide, 0.5-1.5 parts of metallic silicon and 3.5-4.5 parts of water. Material decomposition is achieved at the high temperature, gas is continuously generated under the condition that 0.7-1.0 Kg / ton of steel is added, slag liquid is foamed, the slag liquid is emulsified in the gas-slag mixing state, the slag liquid level rises, and electrode arc light is continuously and more effectively embedded. In the steel refining process, the purposes that the extremely high noise generated by electrode arcing in an LF furnace is lowered, the noise in an operation room of the LF furnace is reduced to 74-85 decibels from 87-97 decibels, and the environment-friendly steel making is achieved are achieved.

Description

technical field [0001] The invention relates to a steelmaking auxiliary material, in particular to an environment-friendly submerged arc heat storage agent and a preparation method thereof. Background technique [0002] In 1971, Japan developed the LF furnace, which is a ladle refining furnace that inserts electrodes into molten steel and relies on arc heating, argon stirring and slag refining as the key technologies. This device has been widely used due to its unique advantages and has become a The most important refining device outside the furnace, so far more than 70% of the molten steel has been treated by the LF furnace. [0003] With the acceleration of steelmaking rhythm and the continuous improvement of steel quality requirements, it is usually to increase the electrode power to increase the temperature rise rate of molten steel to achieve rapid melting of alloys and slag agents and temperature compensation to meet the process requirements of LF furnaces. On the oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/00
Inventor 宋君祥宋伟吴健
Owner 鞍山天祥冶金材料有限公司
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