Brass alloy coverage slag removal agent and preparation method thereof

Abstract

The invention provides a brass alloy coverage slag removal agent and a preparation method thereof. The brass alloy coverage slag removal agent is characterized by comprising following components in percent by mass: 10-20% of a chloride, 20-30% of a fluoride, 10-15% of charcoal dust and the balance of a carbonate. The preparation method of the brass alloy coverage slag removal agent comprises the following steps: burdening by means of putting the components from a large ratio to a small ratio; mixing and uniformly stirring; secondly, drying a mixture and controlling a water content within a range of 0.5%; finally, grinding the dried materials in a powder manner, and controlling the particle size of the powder within a range of 80 meshes. The brass alloy coverage slag removal agent provided by the invention has the advantages of good spreading property, coverage property, separation property and purification property and good effect of slag removal. Not only can slag of a furnace wall and a furnace bottom be removed in a furnace cleaning process by using a manual sprinkling and stirring method, but also the brass alloy coverage slag removal agent can be directly and uniformly sprinkled to the surface of a brass alloy molten body. Compared with the traditional slag removal agent, the additive amount of the slag removal agent provided by the invention is only 0.3-0.5% of a processing amount of brass, so that the copper content in the furnace slag can be effectively reduced, and the gas removal and coverage effects can be realized.

Description

technical field [0001] The invention belongs to the technical field of casting flux, in particular to a covering and slag cleaning agent used for purifying melt in the casting process of brass alloy and a preparation method thereof. Background technique [0002] Slag remover, also known as slag remover, slag breaking agent, covering slag removal flux, is widely used in foundry industry. In the brass alloy casting process, in order to prevent the brass alloy from absorbing, oxidizing, and removing the gas and oxidized slag in the alloy during the smelting process, it is necessary to add some alloying elements with the help of a flux to refine the grain and inhibit some The harmful effect of trace impurities improves the process performance of brass alloys. The existing covering and slag cleaning agents used for purifying the melt in the casting process of brass alloys are mostly neutral fluxes, that is, chloride salts or fluorine salts of metals and alkaline earth metals, wh...

AI Technical Summary

Problems solved by technology

This neutral flux can not only form slagging with oxides in brass alloys, but also remove oxides by adsorption or melting. It also has the functions of degassing and covering heat preservation, but the slagging effect is not good in the actual application process. The slag and the brass melt are not easy to separate, the slag is not loose enough, and the agglomeration phenomenon is serious; and the copper content in the slag is as high as 20-25% of the slag weight, which not only reduces the effective usage of the slag cleaning agent, but also affects the use effect. Serious waste of copper metal, resulting in waste of resources

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