Wechat QR code
Wechat QR code
15311826613
Click to add WeChatAt present, more than 30 types of tungsten-containing minerals have been discovered, but only scheelite, wolframite and black and white tungsten mixed ore are worth mining. As black and wolframite are becoming increasingly depleted, poor, fine and mixed black and white tungsten mixed ore that is difficult to select has become the main target of development. So what are the methods for beneficiating black and white tungsten mixed ore? Let's learn about it together!
Recommendations: scheelite beneficiation process black tungsten ore beneficiation process
Generally, the composition of black and white tungsten mixed ore is complex, and it often has the characteristics of fine embedded particles and severe mud. Therefore, it is relatively difficult to recover the tungsten minerals in it. It is difficult to obtain ideal tungsten concentrate using a single beneficiation method. After continuous technological innovation, there are now combined beneficiation processes that are mainly based on flotation and combined with gravity separation, magnetic separation and other methods, including gravity separation-flotation combined process, magnetic separation-flotation combined process, gravity separation-magnetic separation-flotation combined process, etc.
Whether it is easy-to-select tungsten or difficult-to-select tungsten, it is necessary to follow a principle, that is, "throw away early, collect early", so for the black and white house mixed ore with uneven embedded particle size, gravity separation-flotation combined process flow can be used for separation, flotation is used for pre-desulfurization, gravity separation is used for pre-desludging, and gravity separation can be used as a sorting operation to select some coarse tungsten concentrate in advance. This combined method can greatly reduce the cost of mineral processing and improve the economic benefits of the mineral processing plant.
For example: A fine-grained black and white tungsten mixed ore adopts the process flow of gravity selection-flotation-gravity selection. First, a cyclone is used for pre-desilting. The obtained sediment is fed into the flotation machine for room temperature flotation. The sulfur rough concentrate is obtained by flotation of the sulfide ore, and the tailings are flotated to obtain the tungsten rough concentrate. Then, the centrifugal concentrator is used for the final tungsten concentration.
As we all know, wolframite has weak magnetism and can be separated by strong magnetic separation. When the content of wolframite is low and the content of magnetic non-target mineral components is high in mixed tungsten ore, magnetic separation can also be used to pre-treat the ore to reduce the impact on subsequent processes. This combined method can simplify the mineral processing process and improve the mineral processing efficiency.
For example: the ore of a black and white tungsten mine has fine particle size, complex mineral composition, and high calcium gangue mainly composed of fluorite has a great influence on the flotation of scheelite. Therefore, the flotation-magnetic separation combined process was studied. The process is to recover sulfide ore by flotation first, and the tailings of flotation are pre-weakly magnetically separated to remove iron. The tailings of weak magnetic separation are magnetically separated by a high gradient strong magnetic separator, and the magnetic products are flotated for black tungsten, and the non-magnetic products are flotated for scheelite, and finally the ideal scheelite concentrate is obtained.
This combined process is suitable for processing mixed tungsten ores with low ore grade, extremely complex associated components and high calcium and magnesium gangue content. Usually, the combined process of gravity separation, magnetic separation and flotation can be used for separation to obtain more ideal mineral processing indicators.
For example: A certain black and white tungsten paragenetic ore has many useful mineral components, fine embedded particle size, complex co-associated components, and high calcium and magnesium gangue mineral content. After multiple method tests, the combined process of gravity separation, magnetic separation and flotation was finally designed. The process is to first flotate and magnetically separate the sulfide ore, then perform mixed rough separation of black and white tungsten on the magnetic concentrate, and then separate black and white tungsten from the mixed rough concentrate. After heating and concentration, the concentrated concentrate is acid-leached to obtain scheelite concentrate. The tailings of the heated concentration are re-selected on a shaking table to obtain part of the black tungsten concentrate. The tailings of the shaking table are then flotated to obtain black tungsten concentrate.
The above is an introduction to the commonly used beneficiation process for mixed black and white tungsten ores. In actual beneficiation plants, due to the differences in the properties of tungsten ores, the selected process methods are also different. Therefore, it is recommended to first conduct a ore dressing test, and design a suitable black and white mixed tungsten beneficiation process through experimental analysis.
Consultation
153-1182-6613
Consult
Message
