Round-billet continuous-casting crystallizer covering slag and production 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 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: 2014-05-14
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 covering slag and production method thereof
  • Round-billet continuous-casting crystallizer covering slag and production method thereof
  • Round-billet continuous-casting crystallizer covering slag and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The formula of yellow phosphorus waste residue 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 following table:

[0032]

[0033] From the comparison of the above data, it can be seen that 33% of yellow phosphorus waste slag replaces 18% of wollastonite, 3% of fluorite, 8% of glass stone, 2% of bauxite, 3% of soda ash, and 2% of magnesium in the conventional formula. Powder, plus 3% quartz; conventional formula raw material cost is 1284.5 yuan / ton, yellow phosphorus waste slag is calculated at 350 yuan / ton, the raw material cost of yellow phosphorus waste slag formula is 1027.3 yuan / ton, and the raw material cost is reduced by 257.2 yuan / ton.

[0034] In the process ③In the batching and pulping, the pulping time is 62min, and the water content of the slurry is 28%; ④The spray granulation plunger pump has a pump pressure of 2.1MPa, a liquid supply rate of 18mL / min, and a f...

Embodiment 2

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

[0038]

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

[0040]

[0041] From the comparison of the above data, it can be seen that 29% of yellow phosphorus waste slag replaces 1% of fluorite, 1% of bauxite, 1% of soda ash, 1% of magnesium powder, 28% of wollastonite, plus 3% of conventional formula. quartz. The raw material cost of the conventional formula is 1266.2 yuan / ton, and the yellow phosphorus waste slag is calculated at 350 yuan / ton. The raw material cost of the yellow phosphorus waste slag formula is 1043.8 yuan / ton, and the raw material cost is reduced by 223.4 yuan / ton.

[0042] In the process ③In the batching and pulping, the pulping time is 65min, and the water content of the slurry is 30%; ④The spray granulation plunger pump is pumped at 2.2MPa, the liquid supply rate is 19mL / min, and the fluidized ...

Embodiment 3

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

[0046]

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

[0048]

[0049] From the comparison of the above data, it can be seen that 25% of yellow phosphorus waste slag replaces 2% of fluorite, 2% of bauxite, 7% of limestone, 4% of cryolite, 3% of magnesium powder, and 9% of silica fume in the conventional formula. Stone, plus 2% quartz. The raw material cost of the conventional formula is 1235.8 yuan / ton, and the yellow phosphorus waste slag is calculated at 350 yuan / ton. The raw material cost of the yellow phosphorus waste slag formula is 959.7 yuan / ton, and the raw material cost is reduced by 276.1 yuan / ton.

[0050] In the process ③In the ingredients and pulping, the pulping time is 67min, and the water content of the slurry is 32%; ④The spray granulation plunger pump has a pump pressure of 2.4MPa, a liquid supp...

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Abstract

The invention discloses round-billet continuous-casting crystallizer covering slag and a production method thereof. The covering slag comprises, by weight, 23-27% of CaO, 29-32% of SiO2, 1-3% of MgO, 4.5-6.5% of Al2O3, 4-6% of Na2O, 2.5-4.5% of F, 14-18% of Csolid and less than or equal to 2% of Fe2O. The production method includes raw material pretreatment and testing, covering slag formulation design, compounding and pulping, spray granulation, screening dedusting and product testing. The production method is low in cost, capable of improving quality of the covering slag and increasing utilization rate of yellow phosphorus waste slag and great in contribution to the environment; tests show that compared with a conventional raw material, the yellow phosphorus waste slag taken as a raw material has the advantages that cost of the covering slag is lowered by 223-276 RMB/ton, and first-class qualified rate of cast billets is increased by 2.3-3.1% on year-on-year basis.

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 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 limestone as base materials,...

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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