Sample melting furnace

Abstract

The invention provides a sample melting furnace. The melting furnace comprises a furnace body, wherein the furnace body is in a cubic structure, an upper furnace body and a lower furnace body are combined closely to form the furnace body, the furnace body comprises a furnace casing, a furnace lining, a hearth and heating bars, the bottom end face and the side face of the furnace lining are coated by the furnace casing, at least one hearth is arranged inside the furnace lining, first through holes are arranged on the hearth circumferentially, the central axes of the first through holes are parallel to the contact surfaces of the upper furnace body and the lower furnace body, the first through holes are communicated with the hearth, the first through holes are symmetrical relative to the contact surfaces of the upper furnace body and the lower furnace body, heating bars are arranged in the first through holes in a matching mode, second through holes are arranged on the upper end face of the upper furnace body, the second through holes are communicated with the hearth, and the second through holes are matched with a crucible. The furnace has the advantages of being simple in structure, light in weight, flexible to operate, convenient to maintain, quick in temperature rising, high in temperature control accuracy, good in heat insulation, little in radiation, light in proportion, little in heat accumulation, high in energy saving, good in inner hearth temperature uniformity, capable of heating samples containing volatile corrosives, safe and environment-friendly.

Description

technical field [0001] The invention relates to a melting furnace, in particular to a melting furnace for rapidly sintering and dissolving samples. Background technique [0002] The muffle furnace is an existing common heating equipment. It can be used for heating during heat treatment in the laboratory, and the high-temperature muffle furnace can also be used for high-temperature heating such as sintering and dissolving of samples. At present, this equipment is often used in laboratories to heat and melt samples. However, the existing muffle furnace cannot heat volatile corrosive substances or volatile toxic and harmful substances during heating and use, otherwise it will pollute the environment and cause personal injury to experimenters. Volatile corrosive substances will also corrode the temperature sensor in the heating chamber of the muffle furnace and corrode the exhaust device. When the sample is melted, the temperature sensor and the exhaust device are often damage...

AI Technical Summary

Problems solved by technology

However, the existing muffle furnace cannot heat volatile corrosive substances or volatile toxic and harmful substances during heating and use, otherwise it will pollute the environment and cause personal injury to experimenters.

Volatile corrosive substances will also corrode the temperature sensor in the heating chamber of the muffle furnace and corrode the exhaust device. When melting the sample, the temperature sensor and the exhaust device are often damaged, resulting in frequent replacement of the temperature sensor and a severe shortening of the service life of the instrument.

However, in actual work, when many samples are melted, the volatile substances, corrosive substances and toxic and harmful substances in the samples will volatilize, and the traditional muffle furnace cannot be used for melting and heating of such samples.

In addition, the sample needs to be shaken to mix the crucible from time to time during the melting process. The traditional muffle furnace cannot do this, and the furnace needs to be opened and shaken before being put back.

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