Tin Ore Washing-Processing Plant
                                                                        --Beneficiation of Cassiterite Tin

The tin ore washing-processing line can include washing, screening, gravity separation, milling, and floatation separation. And for different tin mine, different flow sheet can be designed according to the ore natures. There are cassiterite, stannite, multi-metals tin ore, and cylindrite ore in tin mineral catalogue, and different processing flow sheet shall be involved for different tin mineral.

Alluvial Tin extraction site in Mongolia

The chemical composition of cassiterite is SnO2 with its tetragonal system of bi-taper, columnar, and sometimes needle-like. Its specific gravity is 6.3-6.5. As the main source of metal tin, cassiterite is kind of tin mineral with highest tin content. Most of tin in cassiterite is in shape of crystals with high single separation degree and big density, so gravity separation is a great enrichment way to get high-grade tin concentrate. For the cassiterite in alluvial tin ore, simple hand selection can help to get qualified concentrate, but it needs large human power with low efficiency. And that is why a tin ore washing production line is needed. The following is about a picture of raw tin ore:

Tin Ore in Rwanda

Tin Beneficiation process site in Rwanda

As the picture shows, there is much stick clay in the alluvial tin ore and the main tin mineral is cassiterite. The upper pictures are about lumpy tin after washing by hands. When hand selection is used, only coarse tin can be get and the fine granules will be missing, so a mechanized tin ore processing line will be needed to enrich the fine, medium, coarse tin granules. And here is some tin dressing flow chart to share:

The loader will put the raw tin ore into the rotary washing machine to remove the sticky clay and liberate the tin granules from the packaged mud. This tin log washer can also screen the tin into -8mm and +8mm. The -8mm minerals go for 2LTC6109/8T jigger through vertical spiral conveyor while the +8mm ores will be put into crusher for crushing to be -8mm and the crushed -8mm tin ore will be conveyed to jigger for jigging separation. Tin jig concentrating machine is the core equipment in this gravity separation washing line to separate the tin concentrate from the impurities. There is a large quantity of water in tailings and concentrate, so dewatering screen can be used for the tailings while the concentrate can be discharged into the concentrate pool for further deposit. Dewatering processing can be designed according to requirements of clients. The following picture is about one of Forui tin mining separating site to share:
 

Alluvial Tin extraction site in Nigeria

 Forui has rich beneficiation experience of tin enrichment to share with you. Small test can be done for you if samples can be available. Flow sheet with general budget can be designed for you according to the test. And you are high welcome to Forui.

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