Ramming material for ladle lining and preparation method thereof

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...

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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 leakage may occur from time to time. In the ladle accident, the loss of each leaking ladle is at least 10,000 yuan, which brings great hidden dangers to the safety of people and equipment around the molten iron ladle lifting process. At the same time, the molten iron sticks to the ladle seriously. a great waste

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