Metallurgical auxiliary material core-wrapped blocks and production device thereof

Abstract

The invention relates to a metallurgical auxiliary material product, in particular to metallurgical auxiliary material core-wrapped blocks and a production device thereof, and belongs to molten iron alloy treatment. The core-wrapped blocks are characterized by being composed of core materials, flexible wrapping films and rigid wrapping covers; press-fit edges are arranged at the two ends, and the core-wrapped blocks are in a lump shape; the diameter ranges from 60 mm to 350 mm; the grain size of the core materials is smaller than 50 mm; the vacuum degree of flexibly-wrapped blocks is smaller than or equal to 200 pa. The production device is formed by connecting a feeding belt, a feeding device, a block mold, a mold conveying chain belt, a vacuum flexible wrapping device, a flexibly-wrapped block conveying device, a rigid wrapping device and a finished product conveying belt. Metallurgical auxiliary materials are conveyed to a feeding bin through the feeding belt, pushed by a feeding screw to be fed, charged into the mold and packaged into the flexibly-wrapped blocks in a flexible wrapping mode in a vacuum chamber; the rigid wrapping device wrap performs roll wrapping, press fit and cutting so that the core-wrapped blocks can be formed. The core-wrapped blocks have the advantages of being novel in concept, small in superficial area, good in sealing performance and metallurgical function, convenient to transport, store and use and high in recovery rate, lowering loss and reducing environmental pollution. The production device is compact in structure, reasonable in arrangement, convenient to operate and high in finished product yield.

Description

technical field [0001] The invention belongs to the processing of molten iron alloys, in particular to metallurgical auxiliary material products and production devices thereof. Background technique [0002] In the process of metal smelting, in order to adjust the final composition of metallurgical products, it is necessary to add metallurgical auxiliary materials with various functions. Some of these auxiliary materials are metals, or metal oxides or non-metals, in powder, granular or mixed state. Among them, some metals or metal oxides are particularly easy to absorb moisture, hydrate, oxidize, and pulverize, and generate new substances, such as calcium, magnesium or calcium oxide, magnesium oxide, etc., resulting in denaturation of active ingredients and reduced use effect. It will also increase the energy consumption of the process, causing environmental pollution and waste of resources. For example, when CaO meets water, it forms Ca(OH) 2 , decomposes and absorbs heat...

AI Technical Summary

Problems solved by technology

The defect is that there are inevitably gaps in the cored wire. As time goes by, the metal or metal oxide still has the problem of moisture absorption, hydration, oxidation and pulverization, denaturation and failure, which affects the use effect and economic benefits; The depth is limited, the recovery rate is not high, a special wire feeder is required, and sometimes the gun will be blocked;

[0007] 4. There is a defect in the packaging of double-layer woven bags with double-layer film. The air with a certain humidity is sealed during the packaging process, which will cause changes in the properties of the metallurgical auxiliary materials during use after production; Metallurgical auxiliary materials will burn rapidly during use, so that the powder rises with the high-temperature hot air flow, and cannot effectively enter the metallurgical melt, resulting in material waste and environmental pollution

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