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A kind of billet medium and low carbon steel continuous casting mold powder and its production method

A continuous casting crystallizer and production method technology, applied in the field of metallurgical auxiliary materials, can solve the problems of reducing the types of base materials, prone to split melting, instability, etc., so as to reduce a large number of accumulation and serious pollution problems, save mining, and add value. high effect

Active Publication Date: 2016-05-11
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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  • A kind of billet medium and low carbon steel continuous casting mold powder and its production method
  • A kind of billet medium and low carbon steel continuous casting mold powder and its production method
  • A kind of billet medium and low carbon steel continuous casting mold powder and its production method

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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 24% of yellow phosphorus waste slag replaces 7% of fluorite, 3% of bauxite, 6% of glass stone, 7% of wollastonite, 4% of calcite, and 2% of ice crystals in the original formula. stone, plus 5% quartz. The raw material cost of the original formula is 1324.8 yuan / ton, and the yellow phosphorus waste residue is calculated at 350 yuan / ton. The raw material cost of the new formula is 1015.4 yuan, and the raw material cost is reduced by 309.4 yuan / ton.

[0034] In the process ③ in the batching and pulping, the pulping time is 60min, and the water content of the slurry is 31%; ④The pump pressure of the spray granulation plunger pump is 2.5MPa, the liquid supply rate is 21mL...

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 30% of yellow phosphorus waste slag replaces 2.5% of fluorite, 1% of bauxite, 31% of wollastonite, 1% of cryolite in the original formula, plus 3.5% of quartz and 2% of calcite . The raw material cost of the original formula is 1250.5 yuan / ton, and the yellow phosphorus waste residue is calculated at 350 yuan / ton. The raw material cost of the new formula is 994.4 yuan, and the raw material cost is reduced by 256.1 yuan / ton.

[0042] In the process ③ in the batching and pulping, the pulping time is 65min, and the water content of the slurry is 33%; ④The pump pressure of the spray granulation plunger pump is 2.7MPa, the liquid supply rate is 23mL / min, and the flui...

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 27% of yellow phosphorus waste slag replaces 3% of fluorite, 2% of bauxite, 7% of limestone, 3% of bentonite, 18% of wollastonite and 3% of ice crystal in the original formula. Stone, plus 4% quartz, 5% calcite. The raw material cost of the original formula is 1317.9 yuan / ton, and the yellow phosphorus waste residue is calculated at 350 yuan / ton. The raw material cost of the new formula is 1033.4 yuan, and the raw material cost is reduced by 284.5 yuan / ton.

[0050] In the process ③ in the batching and pulping, the pulping time is 70min, and the water content of the slurry is 34%; ④The pump pressure of the spray granulation plunger pump is 2.9MPa, the liquid sup...

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Abstract

The invention discloses square billet low-medium carbon steel continuous casting crystallizer mold powder and a production method thereof. The mold powder is composed of 29-32Wt% of CaO, 28-31Wt% of SiO2, 1.6-2.2Wt% of MgO, 1.6-2.5Wt% of Fe2O3, 6.5-8.5Wt% of Al2O3, 4.5-6.5Wt% of Na2O, 4.5-6.5Wt% of F and 11.5-13.5Wt% of solid C. The production method includes raw material pretreatment and detection, mold powder formula designing, burdening and pulping, spray granulation, screening dedusting and product detection. The production method is low in production cost, quality of the mold powder and utilization efficiency of yellow phosphorus slag can be improved, and contribution to environment is great; tests show that compared with using of conventional raw materials, due to adopting the yellow phosphorus slag as a raw material, cost can be lowered by 256-309 RMB / ton, and primary qualified rate of casting blanks is increased by 2.4-2.9% after being used for production.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and in particular relates to mold slag for continuous casting molds of low-carbon steel in square billets and a production method thereof. Background technique [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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/111B01J13/04
Inventor 张国令陈守杰
Owner HENAN TONGYU METALLURGY MATERIALS GRP
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