Ramming material for ladle lining and preparation method thereof

A technology for ramming material and molten iron ladle, which is applied in the field of ramming material for lining of molten iron ladle and its preparation, can solve the problems of hidden dangers of personal and equipment safety, serious sticking of molten iron ladle, low safety factor, etc. The effect of sufficient material and enhanced material properties

Active Publication Date: 2020-01-03
鄂尔多斯市瀚博科技有限公司
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Problems solved by technology

The ladle structure used in traditional ferrosilicon production is composed of steel shell and lining refractory material. The lining refractory material is usually built with clay bricks. There are many disadvantages in the process of use: for example, the safety factor is low, and ladle accidents or even lea

Method used

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  • Ramming material for ladle lining and preparation method thereof
  • Ramming material for ladle lining and preparation method thereof

Examples

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Example Embodiment

[0037] The composition of raw materials in Examples 1-4 of the present invention is shown in Table 1;

[0038] The method for preparing the ramming material for the inner lining of the molten iron ladle described in Examples 1-4 of the present invention includes the following steps:

[0039] (1) Weigh sodium silicate and aluminum polyphosphate by weight percentage, add 3 times the weight of water according to the weight ratio of 1:3, and heat to 50°C and stir until all sodium silicate and aluminum polyphosphate are dissolved In water, form admixture solution;

[0040] (2) Weigh the clay, graphite, fly ash, silicon carbide powder, and chromium slag powder according to the weight percentage, and pre-mix, then add silica and high alumina bauxite to mix to form a batch. During the mixing process, the fog Add admixture solution;

[0041] (3) Weigh tap water according to the batch: water weight ratio of 9:1 and add it to the batch while stirring. The stirring time is 6 minutes to form a we...

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Abstract

The invention relates to a ramming material for a ladle lining and a preparation method thereof. The ramming material comprises the following raw materials: 52 to 57 percent of silica, 20 to 23 percent of high-alumina bauxite, 5 to 10 percent of clay, 5 to 15 percent of graphite, 0.1 to 5 percent of fly ash, 0.2 to 5 percent of silicon carbide power, 0.1 to 3 percent of chromium slag powder, 0.1 to 1 percent of sodium silicate and 0.1 to 1 percent of aluminum polyphosphate. Advantages of the invention are as follow: as that structure strength is high in the use process, it will not cause ladleleakage accidents due to loosening, peeling and other damages in the use process, thus ensuring the safety of people and equipment around the ladle during lifting and transporting, preventing molteniron from sticking to the ladle, preventing wrapping of molten iron in slag, improving the recovery rate of molten iron, and greatly improving the safety and economy.

Description

technical field [0001] The invention belongs to the technical field of ferrosilicon production, and in particular relates to a ramming material for ladle inner lining and a preparation method thereof. Background technique [0002] In the production of ferrosilicon, the ladle containing molten iron is the main equipment. The quality of the ladle, especially the quality of the internal refractory material, directly affects the safety of the ladle during use (especially the occurrence of ladle wear accidents). , the recovery rate of molten iron and the workload of repairing packages. The ladle structure used in traditional ferrosilicon production is composed of steel shell and lining refractory material. The lining refractory material is usually built with clay bricks. There are many disadvantages in the process of use: for example, the safety factor is low, and ladle accidents or even leakage may occur from time to time. In the ladle accident, the loss of each leaking ladle i...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/14
CPCC04B35/66C04B35/14C04B35/62204C04B2235/3217C04B2235/349C04B2235/425C04B2235/3826C04B2235/3427C04B2235/447C04B2235/9676C04B2235/9615C04B2235/96
Inventor 李胜春宋永宏刘坤仑牛强邸俊明华永才
Owner 鄂尔多斯市瀚博科技有限公司
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