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Round billet continuous casting crystallizer casting powder and preparation method thereof

A technology of mold flux and round billet continuous casting, which is applied in the field of metallurgical auxiliary materials, can solve the problems of easy splitting, reduce the types of base materials, instability, etc. Check the effect of cost

Inactive Publication Date: 2014-03-19
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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  • Round billet continuous casting crystallizer casting powder and preparation method thereof
  • Round billet continuous casting crystallizer casting powder and preparation method thereof
  • Round billet continuous casting crystallizer casting powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The flux waste slag formula in the above 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 20% of flux waste slag replaces 3% of fluorite, 6% of bauxite, 3% of soda ash, 2% of magnesium powder, 6% of wollastonite, and 2% of cement in the conventional formula. Add 2% quartz; the raw material cost of the conventional formula is 1242.3 yuan / ton, the raw material cost of the flux waste slag formula is 997.6 yuan / ton, and the raw material cost is reduced by 245.7 yuan / ton.

[0034] In the process ③ in the batching and pulping, the pulping time is 68min, and the water content of the slurry is 31%; ④The pump pressure of the spray granulation plunger pump is 1.9MPa, the liquid supply rate is 17mL / min, the fluidized bed The temperature of the layer is 54°C; after screening and dust removal, ...

Embodiment 2

[0037] The flux waste slag formula 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 26% of flux waste slag replaces 12% wollastonite, 3% fluorite, 5% limestone, 5% calcite, 5% soda ash, 2% bauxite, 2% Magnesium powder, plus 5% quartz and 3% cryolite; the raw material cost of the conventional formula is 1192.5 yuan / ton, the raw material cost of the flux waste slag formula is 894.3 yuan / ton, and the raw material cost is reduced by 298.2 yuan / ton.

[0042] In the process ③ in the batching and slurry making, the slurry making time is 71min, and the water content of the slurry is 32%; ④The pump pressure of the spray granulation plunger pump is 2.0MPa, the liquid supply rate is 18mL / min, and the fluidized bed The temperature of the layer is 55°C; after screening and du...

Embodiment 3

[0045] The flux waste slag formula 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 the flux waste slag replaces 12% of wollastonite, 5% of fluorite, 7% of limestone, 5% of glass stone, 2% of bauxite in the conventional formula, and 4% of bauxite is added. Calcite, 3% quartz; the raw material cost of the conventional formula is 1214.6 yuan / ton, and the flux waste slag is calculated at 350 yuan / ton. The raw material cost of the flux waste slag formula is 948.4 yuan, and the raw material cost is reduced by 286.2 yuan / ton.

[0050] In the process ③ in the batching and slurry making, the slurry making time is 73min, and the water content of the slurry is 33%; ④The pump pressure of the spray granulation plunger pump is 2.1MPa, the liquid supply rate is 19mL / mi...

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Abstract

The invention discloses round billet continuous casting crystallizer casting powder and a preparation method of the round billet continuous casting crystallizer casting powder. The casting powder comprises, by weight, 30-33% of SiO2, 26-29% of CaO, 1-3% of MgO, 0.5-0.9% of Fe2O3, 6-8% of Al2O3, 5-7% of Na2O, 2.5-3.5% of F and 13-17% of solid C. The method includes the steps of raw material processing and detection, casting powder formula design, dosing, pulp making, spray granulation, screening dust extraction and product detection. The method is simple in production process, little in dust, good in spreadability and large in contribution to the environment, the detection shows that compared with conventional raw materials, the cost of each ton of the casting powder is reduced by RMB 245 yuan to RMB 298 yuan when soldering flux waste residues serve as the raw materials, and after the round billet continuous casting crystallizer casting powder is used for production, the class-one casting blank percentage of pass is improved by 2.1% to 2.5%.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and in particular relates to a round billet continuous casting mold mold slag and a preparation method thereof. Background technique [0002] After more than ten years of rapid development of my country's steel industry, the output of crude steel increased from 130 million tons in 2000 to 716 million tons in 2012. However, today's steel industry is facing a bottleneck period of development. On the one hand, there is a disorderly expansion of production capacity, and the domestic steel production capacity is obviously surplus; on the other hand, the industry's profit margin has fallen sharply. Reappearance is entering a longer period of adjustment. All iron and steel enterprises have lowered the purchase price of various raw materials and fuels, including continuous casting mold powder, and the prices of various raw materials for continuous casting mold powder have been...

Claims

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Application Information

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