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Energy-saving and environment-friendly protecting material for slab continuous casting mold

A slab continuous casting and protection material technology, applied in the field of metallurgical auxiliary materials, can solve the problems that it is difficult to achieve the melting state and use effect of premelt protection materials

Active Publication Date: 2014-12-10
HENAN XIBAO METALLURGICAL MATERIALS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test proves that it is difficult to achieve the melting state and use effect of the premelt protection material by using the mold protection material produced by the general protection material raw material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Energy-saving and environment-friendly slab continuous casting crystallizer protection materials, its raw materials include C black, recarburizer, fluorite, sodium fluoride, cryolite, manganese carbonate, barium carbonate, white alkali, water slag, calcite, wollastonite, Yellow dextrin, its weight percent content is respectively 2.5%, 1%, 15%, 2%, 1%, 4%, 2%, 10%, 14%, 3%, 43%, 2.5%. In the continuous casting crystallizer protective material, the weight percentage of BaO is 2-4%, the weight percentage of MnO is 1.0-3.5%, and the binary alkalinity (CaO / SiO 2 ) is 1.15 ~ 1.30, the balance includes SiO 2 , CaO, Al 2 o 3 、Na 2 O, F — , and their weight percentages are SiO 2 25~30.0%, CaO 31~36%, Al 2 o 3 1.5~6.5%, Na 2 O 7.0~11.0%, F — 5~8.5%.

[0013] Note: It is recommended that this scheme be applied to most slab sections in domestic steel mills: 150 / 160 / 180 / 190 / 200 / 220 / 230 / 250 / 300×600~1000~1500~2500 (mm); steel types: High-quality carbon structural steel a...

Embodiment 2

[0015] Energy-saving and environment-friendly slab continuous casting crystallizer protection materials, its raw materials include C black, recarburizer, fluorite, sodium fluoride, cryolite, manganese carbonate, barium carbonate, white alkali, water slag, calcite, wollastonite, Yellow dextrin, its weight percent content is respectively 5%, 1%, 11%, 4%, 3%, 2%, 5%, 12%, 8%, 6%, 41%, 2%.

[0016] In the continuous casting crystallizer protective material, the weight percentage of BaO is 2-4%, the weight percentage of MnO is 1.0-3.5%, and the binary alkalinity (CaO / SiO 2 ) is 1.15 ~ 1.30, the balance includes SiO 2 , CaO, Al 2 o 3 、Na 2 O, F— , and their weight percentages are SiO 2 25~30.0%, CaO 31~36%, Al 2 o 3 1.5~6.5%, Na 2 O 7.0~11.0%, F — 5~8.5%.

Embodiment 3

[0018] Energy-saving and environment-friendly slab continuous casting crystallizer protection materials, its raw materials include C black, recarburizer, fluorite, sodium fluoride, cryolite, manganese carbonate, barium carbonate, white alkali, water slag, calcite, wollastonite, Yellow dextrin, its weight percent content is respectively 2%, 2%, 13%, 3%, 2%, 3%, 3%, 11%, 11%, 5%, 55.5%, 1.5%. In the continuous casting crystallizer protective material, the weight percentage of BaO is 2-4%, the weight percentage of MnO is 1.0-3.5%, and the binary alkalinity (CaO / SiO 2 ) is 1.15 ~ 1.30, the balance includes SiO 2 , CaO, Al 2 o 3 、Na 2 O, F — , and their weight percentages are SiO 2 25~30.0%, CaO 31~36%, Al 2 o 3 1.5~6.5%, Na 2 O 7.0~11.0%, F — 5~8.5%.

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Abstract

The invention discloses an energy-saving and environment-friendly protecting material for a slab continuous casting mold, which comprises raw materials by weight percent: 2-5% of carbon black, 1-3% of carburant, 11-15% of fluorite, 1-4% of sodium fluoride, 1-3% of cryolite, 2-5% of manganese carbonate, 2-5% of barium carbonate, 10-12% of white alkali, 7-15% of grain slag, 2-7% of calcite, 40-50% of wollastonite and 1.5-2.5% of yellow dextrin. When being used, the protecting material can show good spreadability, heat preservation performance and melting performance in a crystallizer; heat transmission amount at the periphery in the crystallizer is stable and uniform, and high casting speed requirements can be met; and testing slag strip is small, non-uniformity of inflow is improved, and the protecting material has good lubricity so as to prevent caking steel leakage. No slag inclusion or caking slag phenomena exist on the surface of a casting blank, so that the surface quality of the casting blank is good.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, in particular to an energy-saving and environment-friendly slab continuous casting crystallizer protective material. Background technique [0002] Entering the "Twelfth Five-Year Plan" period, my country proposes to implement the scientific development concept and build a resource-saving and environment-friendly society; it is the only way to promote economic structural adjustment and change the growth mode; it is an inevitable requirement to safeguard my country's long-term interests . We must adhere to the promotion of energy conservation and development, coordinate development and conservation, strictly control the excessive growth of industries with high energy consumption and high emissions, and increase efforts to eliminate backward production capacity. Premelt is the main material for the production of crystallizer protection materials. Generally, the production o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/111
Inventor 李书成李伟峰黄占基张鹏李保军薛博李琳
Owner HENAN XIBAO METALLURGICAL MATERIALS GROUP
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