Refractory ramming mass for hot metal ladle of ferrosilicon electric furnace and preparation method for refractory ramming mass

Abstract

The invention relates to refractory ramming mass for a hot metal ladle of a ferrosilicon electric furnace and a preparation method for the refractory ramming mass. The refractory ramming mass is prepared from the raw materials in percentage by mass: 71%-85.5% of aggregates, 14%-25% of powders, 0.2%-8% of anti-erosion agent and 0.6%-2% of binder. The aggregates comprise silica and high bauxite, thepowders comprise clay and graphite, the anti-erosion agent comprises silicon carbide powder and chromium slag powder, and the binder comprises aluminum dihydrogen phosphate and polyaluminum phosphate. The refractory ramming mass and the preparation method therefor have the advantages that during use, the structural strength is relatively high, a stopper ladle accident caused by damages such as loosening and spalling will not occur during use, and thus, the safety of peripheral persons and equipment during the hoisting of the hot metal ladle is guaranteed; and meanwhile, a phenomenon that hotmetal is stuck to the ladle will not occur, the condition that the hot metal is wrapped in slag is avoided, the recovery rate of the hot metal is increased, and thus, both safety and economical efficiency are greatly improved.

Description

Technical field [0001] The invention belongs to the technical field of ferrosilicon production, and specifically relates to a refractory ramming material for a ferrosilicon electric furnace ladle 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 internal refractory materials, directly affects the safety of the ladle in use (especially when the ladle is worn) , The recovery rate of molten iron and the workload of repairing packages. Traditional iron ladle structure for ferrosilicon production consists of steel shell and lined with refractory materials. The lined refractory materials are usually built with clay bricks. There are many shortcomings in the use process: for example, the safety factor is low, and sometimes there are accidents or even leakage. In the case of ladle accidents, the loss of each missing ladle is at least 10,000 yu...

AI Technical Summary

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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