50TPH Alluvial Chrome Beneficiation Plant In Zimbabwe

JXSC has provided a complete set of processing plant machinery and all accessories for a Zimbabwean customer’s alluvial chrome beneficiation Plant. The client is a Zimbabwean local mine owner; they have already obtained a mining permit for the chrome mine and plan to set up a 50 TPH alluvial chrome washing plant. They have their own engineering team to set up this plant, so there is no requirement for our engineer’s site service. We offer the detailed layout design with base construction drawings accordingly.

1. The required processing capacity for the plant: 50 TPH
2. Maximum feeding size of ROM: 50mm
3. Ore type: Alluvial chrome ore, soil type without sticky clay
4. Chrome concentrate size is 0- 2 mm
5. Average chrome grade in ROM is 25-27%
6. Target chrome concentrate grade is 48%
7. Considering the presence of magnetic iron ore in ROM, need to add a magnetic separator to reduce iron content, so that the Cr/Fe ratio can be increased.

1. ROM is unloaded into the raw material hopper by a loader or dump truck. The customer makes the raw material hopper with a grizzly bar 40mm to remove everything above 40mm waste, including big stone/roots/branches, etc.; below 40mm goes into the hopper, then through a pengumpan sabuk, which smoothly feeds ROM to the belt conveyor, then to the trommel screen.

2. Layar trombon is a wet screen; it has a 2 mm stainless steel screen, it can flush the soil, and screen out 0- 2 mm and above 2mm waste, which are transported to the waste stockpile by belt conveyor.

3. Less than 2mm from trommel screen is pumped to the pemisah saluran spiral for gravity beneficiation to remove some impurities. The spiral chute separator has two stages: rougher spirals and cleaner spirals. Cleaner spirals are used to process middling from rougher spirals, aimed to increase recovery rate.

4. All concentrate from the two-stage spiral separators is sent to a pemisah magnetik for reducing iron content, to increase the Cr/Fe ratio.

5. The chrome concentrate from the magnetic separator is sent to a hydrocyclone by a slurry pump for dewatering concentrate.

Features of this plant design:
This flowchart design uses screening, gravity separation, and magnetic separation to reduce impurities and iron ore so as to improve the grade of chrome concentrate to meet the customer’s target grade.
This process technology is already mature and widely used in processing alluvial chrome ore; what’s more, gained most customers’ recognition and good feedback, professional & efficient & cost-effective.

Customer Questions & Our Answers

① Can you do a beneficiation test in your factory?
Our reply: Yes, we can do a beneficiation test in our factory.

② What is the recovery rate for the chrome wash plant?
Our reply: The recovery rate for this chrome wash plant is around 50% to 60%.

③ What is the final concentrate grade after processing by your wash plant?
Our reply: Based on your raw ore grade of 15-20%, the final concentrate grade can reach 48% plus.

④ Do you have a magnetic separator to reduce iron content from chrome ore?
Our reply: Yes, we suggest a drum-type wet magnetic separator with 1600-2000 gauss to reduce iron from chrome ore.

⑤ Do you have any technology to dewater the concentrate from the spiral wash plant?
Our reply: Yes, we suggest a hidrosiklon for dewatering the chrome concentrate.

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