Method for distilling and purifying arsenic trioxide by full-automatic belt type electric furnace

Abstract

The invention provides a method for distilling and purifying arsenic trioxide by a full-automatic belt type electric furnace. The invention comprises a crude arsenic trioxide raw material and full-automatic belt type distillation and purification equipment used for purifying arsenic trioxide, wherein the full-automatic belt type distillation and purification equipment comprises side plates, a heating device, a box body, a motor, a transmission crawler belt, a material placing frame, a fan, a feeding hopper, a negative suction type micro-motion material raising mechanism and a collecting mechanism. The invention relates to the field of arsenic trioxide. According to the method for distilling and purifying arsenic trioxide by a full-automatic belt type electric furnace. A large-area tiling purification mode is designed; a special structure capable of layering sublimated materials according to the particle size change in the arsenic trioxide sublimation process is designed; therefore, theproblems that arsenic trioxide needs to be kept still to a certain extent, particles are mutually accumulated, the distillation and purification time is long, and the working efficiency is influencedto a certain extent in a common method for purifying and distilling arsenic trioxide by an electric furnace are effectively solved.

Description

technical field [0001] The invention relates to the technical field of arsenic trioxide, in particular to a method for purifying arsenic trioxide by distillation in a fully automatic belt-type electric furnace. Background technique [0002] Arsenic trioxide, commonly known as arsenic, is mainly used in pesticides, rust-removing preservatives, and chemical preparations in agriculture, coatings, and pharmaceutical industries. It is also a raw material for the preparation of arsenic alloys and semiconductors. Most arsenic is symbiotic or associated with non-ferrous metal ores. As non-ferrous metal concentrates enter non-ferrous smelters, non-ferrous smelters generally store a large amount of arsenic-containing waste after extracting valuable metals, which constitutes the most important source of environmental pollution for non-ferrous metallurgical enterprises in China, so it is further made into product-grade The arsenic trioxide is an imminent task for the majority of non-fer...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a fully automatic belt-type electric furnace distillation and purification method for arsenic trioxide, which solves the problem that the general method of electric furnace purification and distillation of arsenic trioxide requires the arsenic trioxide to be kept still, the particles are piled up on each other, and the distillation and purification It takes a long time, which affects the work efficiency to a certain extent

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