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Ramming material for ladle permanent lining and production method thereof

A ramming material and permanent technology, which is applied in the field of ramming material for permanent lining of ladles and its preparation, can solve the problems of increased stirring, pouring, high cost of materials, hidden safety hazards, etc., and achieves excellent performance of finished products and simple processing process , The effect of low cost of raw materials

Active Publication Date: 2011-08-17
海城利尔麦格西塔材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former requires high-alumina bricks or magnesia bricks and fire mud for caulking, and the cost of materials is high, the work is complicated, the labor intensity is high, and the integrity is not good, so there is a safety hazard in the later use of the ladle; the latter has good integrity and labor intensity It is reduced, but the requirements for raw materials are higher, only limited to SiO2-Al2O3 series, and the construction process is more complicated. It needs to increase equipment such as molds, mixers and vibration motors, and increase the process of stirring, pouring, vibration, health preservation, and baking. The entire cost Still high, and subject to regional humidity, temperature and other conditions, the promotion and application are limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention discloses a ramming material for permanent lining of a ladle. The weight ratio of each raw material is: 55 parts of magnesia, 45 parts of bauxite, 20 parts of clay, and 3 parts of silicate sintering agent.

[0026] The production method of the ramming material for the permanent lining of the ladle comprises the following steps:

[0027] 1) first crushing and sieving magnesia / olivine, bauxite and extra clay;

[0028] 2) mixing the crushed raw materials according to the above weight ratio;

[0029] 3) Add sintering agent, stir and mix evenly;

[0030] 4) Packing into bags and producing finished products.

Embodiment 2

[0032] The invention discloses a ramming material for permanent lining of a ladle. The weight ratio of each raw material is: 5 parts of olivine, 95 parts of bauxite, 15 parts of bentonite, and 1 part of phosphate sintering agent.

[0033] The production method of the ramming material used for the permanent lining of the ladle is the same as in the first embodiment.

Embodiment 3

[0035] A ramming material for permanent lining of a ladle is prepared by mixing the following raw materials in proportions by weight: 95 parts of magnesia, 5 parts of bauxite, 3 parts of clay, and 6 parts of boric acid sintering agent.

[0036] The production method of the ramming material used for the permanent lining of the ladle is the same as in the first embodiment.

[0037] In above embodiment, the particle size distribution of described magnesia or olivine and bauxite is, by weight ratio:

[0038] 1-3mm 45~55

[0039] 0.074-1mm 25~35

[0040] 0-0.074mm 12~40.

[0041] The particle size of the clay or bentonite is 0-0.074mm.

[0042] Main technical performance indicators of finished products (by weight percentage)

[0043] chemical components

[0044] MgO 4.5~85.5%

[0045] Al 2 o 3 4.0~76%

[0046] Granular composition

[0047] 4~1mm 45~55%

[0048] 1~0mm 25~35%

[0049] 0-0.074mm 12~40%

[0050] Flexural strength

[0051] 1300℃.3h 3.5~6.0MPa

[0...

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Abstract

The invention relates to a ramming material for a ladle permanent lining and a production method thereof. The ramming material comprises the following raw materials by weight: 5-95 parts of magnesia or olivine, 5-95 parts of alumina, 3-25 parts of clay or bentonite and 0.5-10 parts of an agglutinant. The method comprises the following steps: firstly, crushing and sieving the magnesia / olivine, thealumina and the clay; mixing the raw materials at the weight ratio; adding the agglutinant at the weight ratio and stirring to evenly mix; and packaging to obtain a finished product. The ramming material has low price, low cost, simple construction, good integrity and stable and reliable quality, and can be widely used in the ladle construction field.

Description

technical field [0001] The invention relates to a material for ladle construction, in particular to a ramming material for permanent lining of a ladle and a preparation method thereof. Background technique [0002] At present, there are mainly two construction methods for the permanent lining of ladles in the world: one is the early wet brickwork process, and the other is the pouring process adopted in recent years. The former requires high-alumina bricks or magnesia bricks and fire mud to fill the joints. The cost of materials is high, the work is complicated, the labor intensity is high, and the integrity is not good, so there are hidden safety hazards in the later use of the ladle; It is reduced, but the requirements for raw materials are higher, only limited to SiO2-Al2O3 series, and the construction process is more complex. It needs to increase equipment such as molds, mixers and vibration motors, and increase the process of stirring, pouring, vibration, health preserva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 王相丰王生裘伟张义先
Owner 海城利尔麦格西塔材料有限公司