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Mold powder for slab continuous casting mold and production method thereof

A technology of mold flux and slab continuous casting, applied in the field of metallurgical auxiliary materials, can solve the problems of instability, easy to separate melting, reduce the types of base materials, etc., achieve high added value, save mining, reduce a lot of accumulation and Effects of severe pollution problems

Active Publication Date: 2016-03-23
HENAN TONGYU METALLURGY MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent application number is CN102430730A, "A Method of Using Electrolytic Aluminum Waste Slag to Produce Continuous Casting Mold Mold Slag". The main components of the raw material electrolytic aluminum waste slag are C, F, and Al. The electrolytic aluminum waste slag is mainly used to replace bauxite, Fluorite and carbonaceous materials save costs, but the SIO 2 , Fe 2 o 3 Unstable, requires multiple test mixes
In addition, when some industrial waste is used as the base material for the mold slag, the types of base materials used should be as few as possible to improve the uniformity of the mold slag melting. melting phenomenon

Method used

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  • Mold powder for slab continuous casting mold and production method thereof
  • Mold powder for slab continuous casting mold and production method thereof
  • Mold powder for slab continuous casting mold and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The formula of yellow phosphorus waste residue in the above-mentioned production process can be shown in the following table:

[0030]

[0031] If conventional raw materials are used, the formula is shown in the table below:

[0032]

[0033] From the comparison of the above data, it can be seen that 29% of yellow phosphorus waste slag replaces 22% of wollastonite, 3% of cryolite, 3% of fluorite, 6% of limestone, 2% of burnt gemstone in the conventional formula, and 4% of Calcite, 3% Quartz. The raw material cost of the conventional raw material formula is 1315.6 yuan / ton, and the yellow phosphorus waste residue is calculated at 350 yuan / ton. The raw material cost of the yellow phosphorus waste residue formula is 1058.3 yuan / ton, and the raw material cost is reduced by 257.3 yuan / ton.

[0034] In the process ③ in the batching and slurry making, the slurry making time is 65min, and the water content of the slurry is 27%; ④The pump pressure of the spray granulation...

Embodiment 2

[0037] The formula of yellow phosphorus waste residue in the above-mentioned production process can also be shown in the following table:

[0038]

[0039] If conventional raw materials are used, the formula is shown in the table below:

[0040]

[0041] From the comparison of the above data, it can be seen that 27% of yellow phosphorus waste slag replaces 1.5% of cryolite, 28% of wollastonite, 2% of burnt gemstone, and 4.5% of quartz in the conventional formula. The raw material cost of the conventional raw material formula is 1386 yuan / ton, and the yellow phosphorus waste residue is calculated at 350 yuan / ton. The raw material cost of the yellow phosphorus waste residue formula is 1167.65 yuan / ton, and the raw material cost is reduced by 218.35 yuan / ton.

[0042] In the process ③ in the batching and pulping, the pulping time is 70min, and the water content of the slurry is 29%; ④The pump pressure of the spray granulation plunger pump is 2.3MPa, the liquid supply rate i...

Embodiment 3

[0045] The formula of yellow phosphorus waste residue in the above-mentioned production process can also be shown in the following table:

[0046]

[0047] If conventional raw materials are used, the formula is shown in the table below:

[0048]

[0049] From the comparison of the above data, it can be seen that 24% of yellow phosphorus waste slag replaces 11% of wollastonite, 8% of glass stone, 3% of fluorite, 2% of cryolite, 3% of calcite in the conventional formula, and 3% of Quartz; the raw material cost of the conventional raw material formula is 1327.3 yuan / ton, the yellow phosphorus waste residue is calculated at 350 yuan / ton, the raw material cost of the yellow phosphorus waste residue formula is 1087.6 yuan / ton, and the raw material cost is reduced by 239.7 yuan / ton.

[0050] In the process ③ in the batching and pulping, the pulping time is 75min, and the water content of the slurry is 31%; ④The pump pressure of the spray granulation plunger pump is 2.5MPa, the ...

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Abstract

The invention discloses a slab continuous casting mold mold flux and a production method thereof. The mold flux composition (unit: Wt%) includes: SiO2? 26-29, CaO? 32-36, MgO? 1.5~2.5, Al2O3? 3~5, Na2O? 8~10, F? 8.5~10.5, C solid? 3~5, Fe2O3≤1.5; the production method includes raw material pretreatment and detection, mold powder formula design, batching and pulping, spray granulation, screening and dust removal and product testing; this method has low production cost and can improve protection The quality of slag and the utilization rate of yellow phosphorus waste slag make a great contribution to the environment. After testing, yellow phosphorus waste slag is used as raw material. Compared with conventional raw materials, the cost of mold slag is reduced by 218-257 yuan / ton. The pass rate of billet level increased by 2.2-2.7% year-on-year.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and in particular relates to mold powder for slab continuous casting molds and a production method thereof. technical background [0002] At present, the growth rate of China's steel consumption is slowing down, the steel production capacity is seriously oversupplied, and the price of raw materials and fuels is running at a high level, so that the benefits of the steel industry have become zero interest rates or losses. All iron and steel enterprises have lowered the purchase price of various mold slag products one after another, but the prices of various production raw materials for continuous casting mold slag have risen. How to reduce costs and increase efficiency is extremely important for the survival of mold slag enterprises. In the prior art, mold fluxes for continuous casting molds are produced with wollastonite, alumina stone, and limestone as base materials, fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/111
Inventor 张国令陈守杰
Owner HENAN TONGYU METALLURGY MATERIALS GRP
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