Silica sol combined magnesium tundish prefabricated member and manufacturing method thereof

A technology of silica sol and prefabricated parts, which is applied in the field of magnesia tundish prefabricated parts and its manufacturing, silica sol combined with magnesium tundish prefabricated parts and its manufacturing field, which can solve the problems of difficult sintering, low medium temperature strength, and resistance to molten steel erosion, etc. problems, to achieve the effects of strong resistance to molten steel erosion, strong resistance to steel slag penetration, and strong resistance to steel slag erosion

Active Publication Date: 2012-09-12
LUOYANG KECHUANG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some beneficial effects have been achieved, they are not satisfactory
The drying strength of sodium hexametaphosphate combined with magnesium prefabricated parts is low, and it is difficult to handle, and it will form low-melting material at high temperature, which is not resistant to molten steel erosion; although calcium aluminate cement combined with magnesium prefabricated parts has higher drying strength, However, low-melts will still be formed at high temperatures; although hydrated alumina combined with ma...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A silica sol combined magnesium tundish prefabricated part, its components and contents are:

[0033] Component Particle Size Content (weight ratio)

[0034] Fused magnesia particles 6-0mm 70%

[0035] Fused magnesia fine powder 200 mesh 27.7%

[0036] Stainless Steel Fiber 2%

[0037] Polypropylene fiber 0.1%

[0038] Tartaric acid 0.2%

[0039] Silica sol 6%

[0040] The manufacturing method of this embodiment includes the following steps:

[0041] Step 1: Purchasing raw materials according to the formula, and inspecting the raw materials according to the national standard, they can be put into use only after they are qualified;

[0042] Step 2: Based on the principle of mixing 1 ton in a single batch, weigh all the raw materials according to the ratio;

[0043] Step 3: Pre-mix the fused magnesia fine powder, steel fiber, explosion-proof agent and curing agent for 3-5 minutes, then add fused magnesia particles and stir for 3-5 minutes;

[0044] Step 4: Put the...

Embodiment 2

[0049] A silica sol combined magnesium tundish prefabricated part, its components and contents are:

[0050] Component Particle Size Content (weight ratio)

[0051] Sintered magnesia particles 6-0mm 68%

[0052] Sintered magnesia fine powder 200 mesh 30.1%

[0053] Stainless Steel Fiber 1.5%

[0054] Polypropylene fiber 0.05%

[0055] Aluminum powder 0.05%

[0056] Anhydrous magnesium sulfate 0.3%

[0057] Silica sol 6%

[0058] The manufacturing method of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0060] A silica sol combined magnesium tundish prefabricated part, its components and contents are:

[0061] Component Particle Size Content (weight ratio)

[0062] Fused magnesia particles 6-0mm 30%

[0063] Sintered magnesia particles 6-0mm 40%

[0064] Fused magnesia fine powder 200 mesh 10%

[0065] Sintered magnesia fine powder 200 mesh 17.7%

[0066] Stainless Steel Fiber 2%

[0067] Polypropylene fiber 0.1%

[0068] Tartaric acid 0.2%

[0069] Silica sol 6%

[0070] The manufacturing method of this embodiment is the same as that of Embodiment 1.

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PUM

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Abstract

The invention discloses a silica sol combined magnesium tundish prefabricated member and a manufacturing method thereof. The manufacturing method for the silica sol combined magnesium tundish prefabricated member comprises seven working procedures of raw material preparation, material matching, material mixing, forming, maintaining, baking and packaging. The manufacturing method has the advantages that as the SiO2 in the binding agent silica sol is uniform distributed in the prefabricated member to form a dense and uniform structure, most of all, the tundish prefabricated member has very strong steel slag corrosion resistance performance and molten steel washing resistance performance in the using process as well as excellent thermal shock resistance performance and can meet the sequential casting requirement of more furnace times.

Description

technical field [0001] The invention relates to a magnesia tundish prefabricated part and a manufacturing method thereof, in particular to a silica sol-bonded magnesia tundish prefabricated part (including impact plate, flow stabilizer, slag retaining wall, slag retaining weir / dam) and its The manufacturing method belongs to the technical field of continuous casting tundish technology in the iron and steel metallurgical industry. Background technique [0002] With the rapid development of iron and steel smelting technology and the continuous improvement of the quality requirements of casting slabs, the continuous casting tundish no longer has the functions of storage and diversion, but is a secondary refining container. In order to improve the flow field of molten steel, reduce the dead zone, prolong the residence time of molten steel in the tundish, achieve uniform molten steel temperature, promote the floating of non-metallic inclusions, and improve the quality of molten s...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 马军强孙顺张小旭
Owner LUOYANG KECHUANG NEW MATERIAL CO LTD
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