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properties of refractory materials-refractory material types

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The utility model aims to overcome the shortcomings of the prior art and provide a magnesia carbon brick at the tapping hole of a converter with simple structure, long service life and convenient installation.

2 In order to solve the above technical problems, the utility model is realized in this way.

3 The invention relates to a magnesia carbon brick for converter tap hole, which comprises an inner brick set and an outer brick set; the inner brick set is arranged in the outer brick set; a stress adjusting reinforcing layer is arranged between the inner brick set and the outer brick set;

The inner brick kit includes the first unit of the inner brick and the second single element of the inner brick; the end of the first single element of the inner brick is longitudinally fixed with an assembly column; the end of the second single element of the inner brick is positioned with an inner assembly groove relative to the inner assembly column; the inner assembly column is embedded in the inner assembly groove;

The outer brick kit includes the first unit of the outer brick and the second single element of the outer brick; the end of the first single element of the outer brick is longitudinally fixed with an outer assembly column; the end of the second single element of the outer brick is relative to the position of the outer assembly column with an outer assembly groove; the outer assembly column is embedded in the outer assembly groove.

As a preferred scheme, the stress adjusting reinforcing layer of the utility model includes a stress adjusting layer and a reinforcing layer. [0010] the utility model has the advantages of simple structure, long service life and convenient installation. Through the double-layer sleeve structure of the inner brick kit and the outer brick kit and the stress adjustment reinforcement layer, the stress distribution caused by the thermal expansion can be effectively decomposed, the frequency and labor intensity of repairing the refractory brick at the outlet can be reduced, the high temperature oxidation erosion and mechanical erosion damage of the molten steel can be reduced, and the service life is clear. Obviously prolonged. The utility model realizes the overall stability of the steel outlet refractory brick through the structural design that the first single element of the inner brick and the second unit of the inner brick are provided with the inner assembly column and the inner assembly groove, and the first unit of the outer brick and the second unit of the outer brick are provided with the outer assembly column and the outer assembly groove. The stress adjusting reinforcing layer of the utility model can effectively adjust the stress distribution of the refractory brick at the steel outlet, and further strengthen the stability of the system.

Description of drawings

 

The utility model will be further described in combination with the attached drawings and specific embodiments. The protection scope of the utility model is not limited to the expression of the following contents.

Fig. 1 is a schematic diagram of the overall structure of the utility model.

In the figure: 1. Inner brick set; 2. Outer brick set; 3. Stress adjustment and reinforcement layer; 301. Stress adjustment layer; 302. Reinforcement layer; 101. The first single element of inner brick; 102. The second single element of inner brick; 201. The first single element of outer brick; 202. The second single element of outer brick; 1011. Inner assembly column; 1021. Inner assembly groove; 2011. Outer assembly column; 2021. Outer assembly groove. Specific implementation mode

As shown in the figure, the magnesia carbon brick at the tapping hole of converter includes an inner Brick Set 1 and an outer Brick Set 2; the inner Brick Set 1 is placed in the outer Brick Set 2; a stress adjusting reinforcing layer 3 is arranged between the inner Brick Set 1 and the outer Brick Set 2;

The inner Brick Set 1 includes the first unit 101 of the inner brick and the second unit 102 of the inner brick; the end of the first unit 101 of the inner brick is longitudinally fixed with an assembly column 1011; the end of the second unit 102 of the inner brick is provided with an inner assembly groove 1021 relative to the inner assembly column 1011; the inner assembly column 1011 is embedded in the inner assembly groove 1021;

The outer brick Kit 2 includes the first single element 201 of the outer brick; the end of the first single element 201 of the outer brick is longitudinally fixed with the outer assembly column 2011; the end of the second single element 202 of the outer brick is provided with the outer assembly groove 2021 relative to the outer assembly column 2011; the outer assembly column 2011 is embedded in the outer assembly groove 2021.

As shown in Fig. 1, the stress adjusting reinforcing layer 3 of the utility model includes a stress adjusting layer 301 and a reinforcing layer 302. The thickness of the stress adjusting reinforcing layer 3 of the utility model is 30mm.

The inner Brick Set 1 and the outer Brick Set 2 of the utility model are respectively fixed and bonded with each other through the working surface, and the fixed plug-ins are further locked, so as to form a solid whole of the inner brick and the outer brick.

It can be understood that the above specific description of the utility model is only used to explain the utility model, but not limited to the technical solution described in the embodiment of the utility model. It should be understood by those skilled in the art that the utility model can still be modified or replaced equivalently to achieve the same technical effect; as long as the use needs are met, it is in the actual situation. With new protection range.

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

LMM Main product series

Core technology products:

  • magnesia carbon brick
  • slide gate plate
  • graphite electrode

Core technology products:

  • Hss roller
  • cast steel rolls
  • tungten carbide ring roller

Core technology products:

  • copper mould tube
  • copper mould plate
  • assembly & cooling jackts

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