Beneficiation Process of Lead Oxide Ore (3)

3 selection and metallurgy joint process

Smelt joint process is to flotation and metallurgical process of combining the advantages of a sorting process.

For some complex oxidized ore containing calcium, magnesium , silicon, etc., it is difficult to recycle using a single flotation method, and the combined process of smelting and smelting can often achieve good results.

A "roasting sulfurized - artificial sulphide ore flotation," the technical idea smelt, Danyun Liang et al LANPING lead oxide zinc sulfide ore roasting experimental study of flotation, flotation mixing the calcined product was obtained in a conventional sulfide ore fine The lead content of the mine is 7.85%, the zinc grade is 34.24%, and the lead and zinc recovery rates are 79.13% and 79.04%, respectively.

Li Shanshan et al. used the process of circulating ammonia leaching-extraction-acidic electrowinning-ammonia leaching slag flotation to treat the low-grade zinc oxide ore of Yunnan Lanping high-alkaline gangue type, and re-grinding the ammonia leaching residue with vulcanization-xanthate method. Sphalerite and residual regia in the flotation leaching residue. The zinc concentrate with a zinc grade of 22.16% was finally obtained, the recovery rate was 68.97%, and the total recovery rate of zinc was 92.57%.

Jiansheng et al. used a combination of metallurgical and metallurgical processes to recover lead, zinc and iron . Conventional lead sulfide flotation process to get a grade of 50.43%, 72.46% Pb recovery of lead concentrate; lead tailings using coal with a high-temperature reducing magnetic separation process can be obtained is about 87% Fe content, recovering iron The metal iron powder with a rate of about 90%, the volatilization rate of zinc in the high temperature reduction process is as high as about 90%.

The treatment of lead-zinc ore by the combination of metallurgy and metallurgy can avoid the adverse effects of impurities such as calcium, magnesium and silicon in lead-zinc ore. It can fully utilize the recovery of valuable metals by smelting technology and fully utilize flotation technology. The advantages of lead-zinc sulfide ore have improved resource utilization and reduced energy consumption as a whole.

4 Conclusion

1Because of the complex composition of lead-zinc ore minerals, there are many associated minerals, the size of the inlaid cloth is fine, the brittleness is easy to be over-grinded and muddy, and the soluble salt content is high. The influence of various inevitable ions on the floatability of lead and zinc Great, it made it difficult to sort and use.

2 For the utilization of lead-zinc ore, scholars at home and abroad have done a lot of research. Although in recent years, some research achievements have been made in the flotation process and pharmacy of lead-zinc ore, most of them still stay in the laboratory research stage, and the limitations are more Strong, due to economic and technical reasons, it is difficult to apply industrially.

3 Using new technology to simplify the conditions of pharmaceutical synthesis, develop new and cheap flotation reagents, further study the new process of fine particle flotation, and achieve efficient and low-cost recovery of lead-zinc ore. It is a major effort of the current dressing workers. direction. At the same time, the combination of metallurgy and metallurgy combined with the advantages of metallurgy and flotation can greatly simplify the selection process and improve the selection index, and has great potential for development in the selection of lead-zinc ore. At present, there is relatively little research on the combined process of metallurgy and metallurgy, which deserves further study.

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