Copper molybdenum separation process and characteristics, copper molybdenum separation inhibitor manufacturers explain to you

The manufacturer of copper molybdenum separating agent thinks that copper molybdenum separation can be carried out after pretreatment, and an important aspect is the selection of flotation agent. Commonly used agents can be divided into inorganic and organic substances. Inorganic substances mainly include Knox, qing compounds, sodium sulfide, etc. The organic matter is mainly mercaptoacetate. It can be used alone or in combination.
1) Qing compound. It includes qing complex, such as qing sodium zinc and iron qing sodium. Copper molybdenum separating agent is mainly used for copper sulfide and iron sulfide according to the manufacturer. Its purpose is to destroy xanthate and produce stable qing complex. Its effect is very obvious, a small amount. In the production and application of concentrator, the molybdenum content of molybdenum concentrate is lower than 0. Add 0.5% copper. 05-0 The concentration stage of molybdenum is 0.06kg/t. However, it is highly toxic, especially when it comes to ores containing gold, silver, etc. Therefore, the application of this method in concentrators is gradually reduced.
2) Sodium sulfide. The manufacturer of copper molybdenum separating agent thinks that it is mainly sodium sulfide, sodium sulfide, ammonium sulfide, etc. It is confirmed that SH - produced by sulfide hydrolysis is the main agent. In actual production, sodium sulfide and sodium sulfide quing are widely used. For example, a copper mine uses Na2S to suppress copper and float molybdenum, and the beneficiation index is good. However, sodium sulfide is easy to be oxidized and ineffective, and the dosage is too large, reaching 80~100 kg/t, and the proportion of reagent cost is quite high, accounting for 85% of molybdenum beneficiation cost.
3) Mercaptoacetate. Copper molybdenum separating agent manufacturers believe that mercaptoacetic acid in particular has good corrosion inhibition effect, less consumption, less pollution and high selectivity. Technicians used sodium sulfide method to synthesize mercaptoacetic acid, and carried out industrial test in Dexing Copper Mine, and achieved good agent effect. The grade of molybdenum concentrate obtained is 51. The recovery rate of molybdenum concentrate is 79.53%. The copper content is only 0.89%. 32%.
4) New agent. Technicians have synthesized a new agent DPS. The experiment shows that it can obviously chalcopyrite and galena, but has little effect on molybdenite. Its dosage is 1/5 of sodium mercaptoacetate and 1/10 of sodium sulfide, with good stability, simple synthesis route and low raw material price. The technician studied a new agent CM1. Compared with mercaptoacetic acid, CM1 has more obvious effect, less dosage (reduced by 20g/L), faster action time, and also has effect on galena.
The copper molybdenum separating agent manufacturer thinks that after molybdenum separation, the next molybdenum beneficiation and copper beneficiation will be carried out. Generally, molybdenum needs six times of beneficiation to meet the smelting requirements. Sometimes, some molybdenum in the mixed flotation concentrate is not completely dissociated, so the regrinding process is inevitable. Technicians improved the process of copper molybdenum ore and added regrinding process before molybdenum separation. The grade of molybdenum concentrate reaches 46.49%, and the recovery rate is 92.26%, which is 0.5% and 3.97% higher than that of raw ore respectively. Copper beneficiation is relatively simple, usually only once, but the asynchronous mixed flotation technology is worth mentioning, that is, flotation of easy to float copper first, then strengthening flotation of difficult to float copper (adding mixed xanthate), and two-step copper concentrate mixing, grinding, and flotation.