A method for preparing multi-element alloys by powder spraying technology

Abstract

The invention relates to a method for preparing multi-element alloys by using powder spraying technology. By adding porous multi-element alloy composite sintering material, massive dust removal powder, industrial waste residue, and semi-coke into a refining furnace, powder spraying is used until all raw materials in the furnace are melted. Add dust removal powder to the alloy melt through the metal feeding pipe inserted into the furnace. After the dust removal powder is completely smelted into the metal melt, the alloy liquid is sampled and tested, and compared with the designed alloy composition, further according to the element content requirements Add corresponding quality of dust removal powder, industrial waste slag and other substances until the chemical composition of the smelted multi-element alloy reaches the designed alloy composition. The present invention prepares multi-element alloys by spraying powder, fully utilizes dust removal powder recovered from the metallurgical industry and industrial waste slag containing metal elements, and at the same time plays the role of artificial slagging agent, so that a thicker layer is formed above the surface of the alloy melt The slag layer resists the tumbling and splashing of molten metal during the powder spraying process.

Description

technical field [0001] The invention belongs to a preparation method of a multi-element alloy, and in particular relates to a production of a multi-element alloy by resource utilization of dust removal powder and industrial waste slag by means of powder spraying technology. Background technique [0002] In the prior art, when the refining furnace is used to smelt multi-element alloys, because the energy is provided by the high-voltage arc formed between the electrode and the conductive material, the entire smelting process will undergo redox reactions, requiring high air permeability in the furnace. Therefore, the initial Do not add a large amount of powder raw materials at one time when feeding the fabric and during the process, which will cause the furnace to sting and flame out. In addition, due to the continuous oxidation-reduction reaction between various substances and elements during the smelting process, if too much powder raw material is added at one time, or too mu...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of adding powder metallurgy or other powder raw materials in the ferroalloy industry, because too much powder raw material is added at one time, or too much powder raw material is continuously added to make the gas permeability of the furnace poor, and it is easy to turn off the flame, the powder spraying technology is used to add powder metal, powder alloy or Other powder raw materials are likely to cause technical problems such as arc breakdown of the furnace cover. The invention provides a preparation method of a multi-element alloy. The specific steps are as follows:

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