Wolframite ore beneficiation process

1. Wolframite gravity separation process

Shaking table gravity separation: Before the shaking table separates wolframite ore, the mineral particle size needs to be hydraulically classified, and then according to the Depending on the size of the ore, the shaking table is divided into three operations: coarse sand shaking table, fine sand shaking table and slime shaking table. Among them, the particle size range of wolframite processed by the coarse sand shaking table is 0.5-2mm; the fine sand shaking table The particle size range for processing wolframite is 0.2-0.5mm; the particle size range for slime processing is less than 0.2mm.

Centrifuge re-selection:Centrifuge re-selection is suitable for sorting coarse particles Wolframite ore uses the centrifugal force generated by the equipment and the effect of the drum wall slope to cause stratification, thereby achieving the purpose of separation. The lower limit of the particle size of wolframite ore separated by the centrifuge can reach 0.01mm.

Chute gravity separation:Spiral chute Gravity separation of wolframite is to send the slurry into the chute. The solid particles first stratify during the movement along the chute. Under the combined action of centrifugal force and secondary circulation directed to the outer edge, the low-density particles Laterally, the particles move toward the outer edge, while the high-density particles move toward the inner edge, thereby separating the two.

2. Wolframite Magnetic Separation Process

Wolframite has a certain weak magnetism, so the weakly magnetic wolframite ore can be separated by using strong magnetic separation. In general, high gradient and strong magnetic separator equipment is often used for magnetic separation. When the minerals are in a loose state, the magnetic medium of the magnetic separator vibrates, and then the magnetic wolframite in the loose minerals is adsorbed, thereby completing the separation. If a real-time magnetic separator or a dry magnetic separator is used for separation, flotation must be used to complete the separation.

3. Wolframite flotation process

Selective flocculation and flotation: It is used Useful minerals are flocculated into agglomerates under the action of selective flocculants, thereby being separated from dispersed gangue minerals. During operation, the slurry needs to be in a state of strong stirring, and pH adjusters and dispersants need to be added to keep the gangue minerals dispersed.

Carrier flotation: It is to selectively attach fine-grained particles to mineral carriers, and then add collectors to make coarse particles The particle carrier floats to complete the flotation separation operation.

Oil agglomeration flotation: It is by adding neutral oil to agglomerate useful mineral particles under the action of bridging to form larger spherical flocs, and then select fine-grained minerals , after reducing the water content of its slurry, qualified wolframite concentrate is obtained.

Shear flocculation-flotation: Fine-grained black tungsten hydrophobic flocs are formed under the combined action of strong stirring and collector to achieve flotation separation. Flotation machine, the stirring speed needs to reach 1650r/min, and oleic acid is used as the collector to complete flotation.

In addition to the above-mentioned beneficiation methods, combined beneficiation methods can also be used to separate wolframite, such as strong magnetic separation-flotation combined process, gravity separation-flotation combined process, strong magnetic separation-gravity separation combined process Craftsmanship etc.