Some common sense of copper molybdenum separation process, copper molybdenum separation inhibitor manufacturers help you

The copper molybdenum separation inhibitor manufacturer believes that there are two plans for the separation of copper molybdenum mixed concentrate: one is to suppress copper and float molybdenum, which is the main beneficiation method. The second is to suppress molybdenum and float copper. The latter method is only used by a few concentrators, and molybdenite is inhibited by dextrin.
The manufacturer of copper molybdenum separation inhibitor thinks that the scheme of copper molybdenum separation inhibitor is as follows:
(1) Sodium sulfide method;
(2) Sodium sulfide steam heating method;
(3) Single qing chemical method;
(4) Qing chemical sodium sulfide method;
(5) Knox reagent (or its combination with sodium qing) method;
(6) Iron and ferrous quing compounds method;
(7) Sodium hypochlorite or hydrogen peroxide method;
(8) Organic inhibitor method, such as thioethanol.
The manufacturer of copper molybdenum separation inhibitor thinks that molybdenum separation: sodium sulfide, qing compound, arsenic or phosnox are effective in inhibiting copper minerals mainly chalcopyrite and bornite; Ammonium sulfide, iron quing compound, ferrous quing compound, oxidant, hypochlorite and hydrogen peroxide can effectively inhibit secondary copper sulfide. Organic inhibitors such as mercaptoethanol are new non-toxic and efficient molybdenum sulfide inhibitors, which are being widely used. In order to improve the separation effect of copper and molybdenum, common measures are:
(1) Concentration and drug removal. The copper molybdenum separation inhibitor manufacturer thinks that before the separation of the mixed concentrate, concentration and de medicating shall be carried out to remove the redundant chemical substances in the mixed concentrate and ensure that the mixing and roughing are carried out at the appropriate concentration.
(2) Steam heating. The manufacturer of copper molybdenum separation inhibitor thinks that some foreign copper molybdenum concentrators use steam (85~90) to heat copper molybdenum mixed concentrate before copper molybdenum separation, sometimes add an appropriate amount of lime (0.8~1.2 kg/t concentrate), and blow in oxygen or air. The purpose is to destroy the collector film on the surface of mixed concentrate through desorption and decomposition. In many countries, sodium sulfide heating (steam purging) method is considered to be a suitable scheme for separating copper molybdenum concentrate. This method uses sulfide to restrain copper minerals, and directly heats the pulp (60~75) along the flotation line with steam. This not only accelerates the desorption and decomposition of the collector, but also slows down the oxidation of sulfide, greatly reduces the amount of sulfide, and improves the separation index.
(3) Add sodium sulfide in sections. The manufacturer of copper molybdenum separation inhibitor thinks that sodium sulfide method is a common method for separating copper and molybdenum. It can inhibit all metal sulfide minerals except molybdenum, and the dosage fluctuates greatly, between 2~30kg/ton. It is more beneficial to add sodium sulfide in sections. A part of sodium sulfide solution is often added to the stirring tank, and the other part of sodium sulfide is placed in the foam tank cleaned by roughing in the form of solid. The heat generated by the dissolution of sodium sulfide is used to increase the mud temperature to enhance its inhibition.
(4) Nitrogen flotation. Copper molybdenum separation inhibitor manufacturers believe that inhibitors used in copper separation and flotation, such as sodium sulfide, sodium sulfite, sodium sulfide or phosphorus pentasulfide in Knox reagent, are easy to be oxidized and lose their inhibition. Due to the long separation cycle of copper and molybdenum, more cleaning times (6~8 times) and long operation line, the increased consumption of these chemicals due to oxidation is more prominent. In order to avoid reagent oxidation and reduce the dosage, the copper molybdenum concentrator uses nitrogen instead of air as the aeration medium for copper molybdenum separation flotation, which has achieved significant economic benefits and can reduce the dosage of Knox reagent by 50%.