A kind of aluminum or aluminum alloy smelting covering agent and preparation method thereof

Abstract

The invention relates to a metal melting material and a production method thereof and in particular relates to a covering agent for aluminum or aluminum alloy melting and a preparation method of the covering agent. In the melting process of metal aluminum or aluminum alloy, a layer of covering agent capable of isolating air is covered on top of molten aluminum and mostly adopts materials such as hydrochloride, fluoride, cryolite, expanded perlite and wollastonite, and general melting uses plant ash. For solving the problems, the invention adopts the technical scheme that cattle manure is used as the main raw material of the covering agent and added with chlorine salt and / or villiaumite, fly ash, zeolite powder and bentonite. The covering agent for aluminum or aluminum alloy melting has the beneficial effects that the cattle manure can substitute plant ash for preparing the covering agent, the covering performance is superior to plant ash, the aluminum melting quality is greatly improved, a large quantity of straw and grass can be saved, development of agriculture and animal husbandry and ecological construction of grassland are favored, cattle manure resources on the grassland are fully utilized, the added value of cattle manure is improved, income of farmers and herdsmen is increased and virtuous circulation with industrial and agricultural production mutually promoted is realized.

Description

technical field [0001] The invention relates to a metal smelting material and a production method, in particular to an aluminum or aluminum alloy smelting covering agent and a preparation method thereof. Background technique [0002] During the smelting process, a variety of metals need to be isolated from the ambient air with a covering agent to prevent the inhalation of gases and the formation of oxidized impurities. Metal aluminum is active, and it is easier to react with the surrounding air during the smelting process, forming impurities such as slag inclusions and oxide films, which have a great impact on the heat conduction and processing performance of aluminum, and seriously reduce the physical properties, corrosion resistance and process of aluminum products. performance. For example, oxygen and sulfur infiltrated during the smelting process of aluminum and aluminum alloys can easily make castings "cold and brittle", and lead and bismuth can easily make materials "...

AI Technical Summary

Problems solved by technology

However, both crop stalks and forage are sources of feed for animal husbandry. Consuming a large amount of crops and forage will increase the contradiction between grass and livestock and increase the burden on the grassland, which is not conducive to the development of agricultural and animal husbandry production.

In addition, burning plants will emit a lot of smoke, which will have a bad impact on the environment

In addition, plant fuels are bulky, prone to mildew, strong seasonality, difficult to store, and often affect production due to supply cuts, which has become a major problem that aluminum and aluminum alloy smelting enterprises need to solve urgently

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