1. Definition of antimony rotary furnace

Antimony rotary furnace is the core thermal equipment for antimony ore smelting. It is mainly used to convert massive antimony sulfide ore containing 10% - 20% antimony into metallic antimony through volatilization roasting and reduction smelting processes. It is widely used in the antimony smelting industry and is a key equipment for efficient utilization of antimony resources.

2. Use of antimony rotary furnace

The main purpose of this equipment is antimony ore smelting and processing to extract antimony. It is mainly divided into two steps: one is the volatilization roasting stage. At a high temperature of about 1100℃, the antimony sulfide ore is oxidized in contact with air to generate volatile antimony trioxide (Sb₂O₃). The rotary furnace rotates to make the material fully contact with the gas to improve the antimony volatilization efficiency; the second is the reduction smelting stage. The volatilized Sb₂O₃ is condensed and collected, and a reducing agent (such as liquefied petroleum gas or heavy oil) is added to reduce it to metallic antimony to produce crude antimony or antimony matte.

3. Application field of antimony rotary furnace

Antimony rotary furnace has a wide range of applications and obvious advantages. In terms of raw material adaptability, it can process sulfide, oxidation and sulfur-oxygen mixed ores, can process ores containing 10% - 50% antimony, and has good processing capabilities for ores containing low melting point impurities (such as arsenic and lead), but needs to prevent furnace agglomeration. In terms of process advantages, it is efficient and energy-saving, with energy consumption 20% - 30% lower than traditional processes, and can also use waste heat recovery systems; stable and reliable, with high control accuracy in the sintering process, and temperature fluctuations of only ±5°C to ensure product quality; good environmental performance, with flue gas purification devices, zero pollutant emissions, in line with international standards; high recovery rate, antimony recovery rate of 97% - 98%, slag antimony content less than 0.8%, reducing resource waste.

4. Summary

In the field of antimony smelting, antimony rotary furnaces are widely used, and their products can be further refined into refined antimony for use in downstream fields such as alloys, flame retardants, and semiconductors. In short, the antimony rotary furnace has achieved efficient conversion of antimony ore with its unique process, and has outstanding performance in raw material adaptation, process, environmental protection and energy saving, and plays an irreplaceable role in the utilization of antimony resources.