Production device for large-particle-size antimony trioxide

Abstract

The invention discloses a production device for large-particle-size antimony trioxide. The production device comprises an antimony white furnace (1), an air cooled type reactor (3), a crystallizer (6) and a cooling dust collector (5), wherein the cooling dust collector (5) is communicated with an air outlet above the crystallizer (6). The production device is characterized in that: the crystallizer (6) is a circular multi-baffle crystallizer and is vertically arranged above the air cooled type reactor (3); baffles (4) which are obliquely arranged are arranged in the circular multi-baffle crystallizer (6); the air cooled type reactor (3) is arranged at an air outlet of a hearth of the antimony white furnace (1); and the furnace top and the furnace wall of the antimony white furnace (1) are provided with air pipes (2). The production device provided by the invention has the advantages of simple structure, high productivity, high recovery efficiency and low production cost.

Description

technical field [0001] The invention belongs to the field of production equipment of antimony trioxide, and in particular relates to a production device of large-diameter antimony trioxide. Background technique [0002] Antimony oxide is a high-performance flame retardant synergistic additive, widely used in electronic appliances, automobiles, textiles, communications, military and other fields. Large particle size (low tinting strength antimony oxide) is a high-end antimony oxide product with an average particle size greater than 2.1 μm. Because of its high flame retardant efficiency and low dosage, it has little effect on the performance of the material and the amount of color masterbatch added, and is very cost-effective. It is comparable to other flame retardants, and it is specially used in dark or colored flame-retardant plastics, resins, and textiles, so the international market price of this product is much higher than that of ordinary antimony oxide. [0003] At pr...

AI Technical Summary

Problems solved by technology

However, this production device has certain disadvantages: when using a horizontal cooling crystallizer, coarse crystals are easily deposited at the bottom of the pipeline, forming scaling or even blocking the pipeline, resulting in interruption of production, resulting in many production processes, low production capacity, and direct collection. The rate is low, the cost of production is high, and the equipment is complicated

However, these improved devices still fail to effectively improve the direct recovery rate of antimony trioxide with large particle size, and cannot meet the current production requirements.

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