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Light roasting pressing ball for converter steelmaking and preparation method of light roasting pressing ball

A converter steelmaking and light sintering technology, which is applied in the manufacture of converters and other directions, can solve problems such as harsh production environment, and achieve the effects of stable slag composition, easy operation and stable composition.

Active Publication Date: 2017-01-25
ZHANJIANG SHENGBAO TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this process, quicklime is added again during the process. In this way, the light-burned dolomite powder and quicklime in the raw materials used have high activity, and they have not been passivated or digested in advance. During the balling process, a large amount of calcium oxide and magnesium oxide will undergo digestion reactions, which will generate a large amount of heat, and then generate a large amount of water vapor and dust. The production environment is harsh

Method used

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  • Light roasting pressing ball for converter steelmaking and preparation method of light roasting pressing ball
  • Light roasting pressing ball for converter steelmaking and preparation method of light roasting pressing ball
  • Light roasting pressing ball for converter steelmaking and preparation method of light roasting pressing ball

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Embodiment Construction

[0027] The preferred embodiments of the present invention are given below to describe the technical solution of the present invention in detail.

[0028] The weight ratio of each raw material of the light-burned briquetting ball for converter steelmaking in the present invention is: light-burned dolomite powder 50-80%, light-burned magnesium powder 20-40%, passivator 5-20%, binder 0.5- 10.

[0029] MgO≥30% and CaO≥50% in lightly burned dolomite powder; SiO2≤2% and MgO≥70% in lightly burned magnesium powder. For example: MgO in lightly burned dolomite powder: 30%~35%, CaO: 50%~55%; SiO2 in lightly burned magnesium powder: 0~2%, MgO: 70%~90%.

[0030] The formula of embodiment is as table 1:

[0031] Table 1

[0032]

[0033]

[0034] The particle size of the lightly burned dolomite powder is 0-5 mm, and the particle size of the raw dolomite is 0-5 mm.

[0035] The particle size of light-fired briquettes for converter steelmaking is 10-50 mm.

[0036] The binder is on...

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Abstract

The invention discloses a light roasting pressing ball for converter steelmaking and a preparation method of the light roasting pressing ball. The light roasting pressing ball is prepared from the following raw materials in parts by weight: 50-80 parts of light roasting dolomite dust, 20-40 parts of caustic-burned magnesia powder, 5-20% of a passivator and 0.5-10 parts of an adhesive. By adopting the light roasting pressing ball, the light roasting dolomite dust can be processed and treated by using a simple, energy-saving, economic and environment-friendly method, not only can the light roasting pressing ball, which is stable in component and good in use effect, be obtained, but also mineral resources are sufficiently utilized, and the environment pollution is avoided.

Description

technical field [0001] The invention belongs to the environmental protection field of converter steelmaking, and in particular relates to a light-fired pressure ball for converter steelmaking and a preparation method thereof. Background technique [0002] The current steelmaking technologies are basically all alkaline steelmaking methods, that is, in converter or electric furnace steelmaking, an alkaline slag system needs to be formed to improve the smelting effect of steel and improve the quality of steel. As a cheap and easy-to-obtain slagging material, light-burned dolomite has been widely used in converter steelmaking. [0003] Lightly burned dolomite is formed by calcining raw dolomite at about 1000 degrees Celsius in rotary kilns, sleeve kilns and other equipment, also known as caustic dolomite. Since the calcination process is a decomposition reaction, and the active calcium oxide is prone to digestion reactions, a large number of decomposition phenomena will occur i...

Claims

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Application Information

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IPC IPC(8): C21C5/36C22B1/242
CPCC21C5/36C22B1/2406C22B1/242
Inventor 刘欣隆孙树森周四明聂爱军
Owner ZHANJIANG SHENGBAO TECH CO LTD
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