Ladle filter sand

A technology of drainage sand and ladle, which is applied in the direction of casting molten material containers, manufacturing tools, metal processing equipment, etc., can solve the problems of automatic pouring rate and poor high temperature resistance of drainage sand, so as to improve the automatic casting rate and avoid Too thick, the effect of increasing the pouring rate

Inactive Publication Date: 2018-06-15
郭舒洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a ladle drainage sand for the problems of poor automatic pouring rate and high temperature resistance of the traditional drainage sand

Method used

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  • Ladle filter sand

Examples

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example 1

[0028] Put the rice husk in an oven, and dry it to a constant weight at a temperature of 110° C. to obtain dried rice husk, crush the dried rice husk and pass through a 160-mesh sieve to obtain rice husk powder, and mix the obtained rice husk powder with After the nano-iron powder is stirred and mixed according to the mass ratio of 100:1, it is moved into the carbonization furnace, and argon gas is introduced into the furnace at a rate of 60 mL / min. ℃, after heat preservation and carbonization for 4 hours, continue to heat up to 1550 ℃ at a rate of 15 ℃ / min, and react at high temperature for 60 minutes. Mix with hydrochloric acid with a mass fraction of 10%, stir and mix with a glass rod for 40 minutes, filter to obtain a filter cake, and wash the filter cake with deionized water until the washing liquid is neutral, then transfer the washed filter cake to an oven, Dry to constant weight at a temperature of 110°C to obtain carbonized rice husk material; in parts by weight, add ...

example 2

[0030] Put the rice husk in an oven, and dry it to a constant weight at a temperature of 110° C. to obtain dry rice husk, crush the dried rice husk and pass through a 160-mesh sieve to obtain rice husk powder, and mix the obtained rice husk powder with After the nano-iron powder is stirred and mixed according to the mass ratio of 100:1, it is moved into the carbonization furnace, and argon gas is introduced into the furnace at a rate of 60 mL / min. ℃, after heat preservation and carbonization for 4 hours, continue to heat up to 1550 ℃ at a rate of 15 ℃ / min, and after 60 minutes of high temperature reaction, under the protection of argon, cool down to room temperature with the furnace, discharge the material, and obtain the carbonized material, and the obtained carbonized material Mix with hydrochloric acid with a mass fraction of 10%, stir and mix with a glass rod for 40 minutes, filter to obtain a filter cake, and wash the filter cake with deionized water until the washing liqu...

example 3

[0032]Put the rice husk in an oven, and dry it to a constant weight at a temperature of 110° C. to obtain dried rice husk, crush the dried rice husk and pass through a 160-mesh sieve to obtain rice husk powder, and mix the obtained rice husk powder with After the nano-iron powder is stirred and mixed according to the mass ratio of 100:1, it is moved into the carbonization furnace, and argon gas is introduced into the furnace at a rate of 60 mL / min. ℃, after heat preservation and carbonization for 4 hours, continue to heat up to 1550 ℃ at a rate of 15 ℃ / min, and react at high temperature for 60 minutes. Mix with hydrochloric acid with a mass fraction of 10%, stir and mix with a glass rod for 40 minutes, filter to obtain a filter cake, and wash the filter cake with deionized water until the washing liquid is neutral, then transfer the washed filter cake to an oven, Dry to constant weight at a temperature of 110°C to obtain carbonized rice husk material; in parts by weight, add 2...

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Abstract

The invention discloses a ladle filter sand, and belongs to the technical field of metallurgical assistants. The ladle filter sand developed in the invention comprises kyanite, bauxite, feldspar, micapowder, a charred rice husk material, Al8B4C7, magnesia and mirabilite. The raw materials are mixed, undergo ball-milling, and then are sieved to obtain the ladle filter sand. The charred risk husk material is obtained through the following steps: mixing rice husks with nano-iron powder, transferring the obtained mixture into a carbonizing furnace, performing heat insulation carbonization in an argon gas protection state for 2-4 h, continuously heating the carbonizing furnace, performing a high temperature reaction, performing furnace cooling to room temperature, pickling the obtained reaction product, and drying the pickled reaction product. The ladle filter sand obtained in the invention has the advantages of excellent automatic casting ratio and excellent resistance to high temperature.

Description

technical field [0001] The invention discloses a ladle drainage sand, which belongs to the technical field of metallurgical additives. Background technique [0002] Drainage sand, also known as drainage agent, is a kind of bulk refractory material filled in the ladle seat brick and the upper nozzle. It is put in before the converter is tapped to prevent molten steel from entering, and it is released when pouring steel. Steel flow effect. The quality of the drainage sand greatly restricts the automatic pouring rate of the ladle. A high ladle automatic casting rate plays a very important role in stabilizing the continuous casting process and ensuring the quality of molten steel. It is also an important prerequisite for continuous casting to use long nozzles to achieve full protection casting. The danger that the ladle cannot be poured automatically: part of the molten steel will be cast open, which will easily cause secondary oxidation of the molten steel and affect the effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66B22D41/44
CPCB22D41/44C04B35/66C04B2235/3206C04B2235/3217C04B2235/3222C04B2235/3409C04B2235/3463C04B2235/3817C04B2235/422C04B2235/448C04B2235/5228
Inventor 郭舒洋许永博张淼
Owner 郭舒洋
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