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Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof

An energy-saving, environmental-friendly, regulator technology, applied in the manufacture of converters, etc., can solve the problems of environmental pollution, converter slag splashing and high cost of furnace protection

Inactive Publication Date: 2017-01-11
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials used in the preparation process of this patent are also minerals rich in magnesia, so there is a certain purchase cost, resulting in problems such as high cost of converter slag splashing and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An energy-saving and environment-friendly converter slag-splashing regulator of the present invention, wherein the ratio of various raw materials is as follows: after use, magnesia coating 50, coke 11, active lime 15, and waste aluminum-magnesium-carbon bricks after use 14. Additive 10 (Al-Mg).

[0029] In the described post-use magnesia coating, MgO is 87.1%, TFe is 1.26%, S is 0.011%, and P is 0.022%; in coke, C is 89.45%, S is 0.19%, ash is 8.25%, volatile 1.11%; CaO in active lime is 61.3%, SiO 2 is 1.18% and S is 0.012%; in waste aluminum magnesia carbon bricks, Al 2 o 3 64.3%, MgO 11.9%, and C 8.1%.

[0030] The preparation method of an energy-saving and environment-friendly converter slag-splashing regulator of the present invention is as follows:

[0031] 1) According to the above-mentioned raw material ratio of an energy-saving and environment-friendly converter slag splash regulator, put the raw materials into a pulverizer and pulverize them to a particle ...

Embodiment 2

[0037] An energy-saving and environment-friendly converter slag-splashing regulator of the present invention, wherein the ratio of various raw materials is as follows: after use, magnesia coating 80, coke 5, active lime 5, and waste aluminum-magnesium-carbon bricks after use 6. Additive 4 (Al-Si).

[0038] In the described post-use magnesia coating, MgO is 87.1%, TFe is 1.26%, S is 0.011%, and P is 0.022%; in coke, C is 89.45%, S is 0.19%, ash is 8.25%, volatile 1.11%; CaO in active lime is 61.3%, SiO 2 is 1.18% and S is 0.012%; in waste aluminum magnesia carbon bricks, Al 2 o 3 64.3%, MgO 11.9%, and C 8.1%.

[0039] The preparation method of an energy-saving and environment-friendly converter slag-splashing regulator of the present invention is as follows:

[0040] 1) According to the above-mentioned raw material ratio of an energy-saving and environment-friendly converter slag splash regulator, put the raw materials into a pulverizer and pulverize them to a particle size o...

Embodiment 3

[0046] An energy-saving and environment-friendly converter slag-splashing regulator of the present invention, wherein the ratio of various raw materials is as follows: after use, magnesia coating 70, coke 7, active lime 8, and waste aluminum-magnesium-carbon bricks after use 10. Additive 5 (Al-Si and its oxides).

[0047] In the described post-use magnesia coating, MgO is 87.1%, TFe is 1.26%, S is 0.011%, and P is 0.022%; in coke, C is 89.45%, S is 0.19%, ash is 8.25%, volatile 1.11%; CaO in active lime is 61.3%, SiO 2 is 1.18% and S is 0.012%; in waste aluminum magnesia carbon bricks, Al 2 o 3 64.3%, MgO 11.9%, and C 8.1%.

[0048] The preparation method of an energy-saving and environment-friendly converter slag-splashing regulator of the present invention is as follows:

[0049] 1) According to the above-mentioned raw material ratio of an energy-saving and environment-friendly converter slag splash regulator, put the raw materials into a pulverizer and pulverize them to...

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Abstract

The invention discloses an energy-saving environment-friendly type converter slag splashing conditioning agent and a preparing method thereof. The conditioning agent comprises, by mass percent, 50% to 80% of used magnesium-clad paint, 5% to 11% of coke, 5% to 20% of active lime, 5% to 20% of used scrap aluminum magnesium carbon bricks and 5% to 20% of an addition agent. Raw materials are placed in a pulverizer to be pulverized, the pulverized raw materials are put into a ball mill to be pulverized to be smaller than 120 meshes, the pulverized raw materials are placed in a stirring machine to be subject to dry blending for 5 min to 10 min, the raw materials evenly mixed are subject to pelletizing through a pelletizing machine, water serves as a bonding agent until the sphere reaches the needed granularity; the made spherical slag splashing conditioning agent is naturally aired until the water mass percent is smaller than 5%.

Description

technical field [0001] The invention relates to the technical field of converter slag splash protection, in particular to an energy-saving and environment-friendly converter slag splash regulator and a preparation method thereof. Background technique [0002] The BOF slag splashing protection technology is to leave part of the final slag after tapping the BOF, and add an appropriate amount of slag adjusting agent to make the slag have a suitable viscosity and refractoriness, and then use an oxygen lance to blow high-pressure nitrogen to the slag to impact the slag. The slag is splashed onto the furnace lining to form an anti-corrosion protective layer on the surface of the furnace lining to achieve the purpose of protecting the furnace lining. In the process of slag adjustment before converter slag splash protection, it is usually used to add magnesium oxide-rich slag adjustment agents such as magnesite, magnesite or dolomite to the remaining slag to increase the magnesium o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/36
Inventor 吕春风李超尚德礼张立夫康磊贾吉祥尹宏军金柏刚毛艳丽王阿鼎
Owner ANGANG STEEL CO LTD