Process piping and flotation circuit in a fluorite plant

Fluorite: staged cleaning under close temperature and reagent control

Fluorite flotation needs many cleaning stages and careful depressant control to separate calcite and barite. Our Italian project was delivered with CE compliance throughout.

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Process route

The technical challenge is separating minerals with similar surface chemistry. The commercial challenge in Europe was compliance, which the Italian project addressed with CE certification across the plant.

Crushing and grinding

Crushing and closed circuit grinding to liberate fluorite from calcite, barite and quartz.

Rougher flotation

Fatty acid collector flotation with depressants for carbonate and silicate gangue.

Multi-stage cleaning

Repeated cleaning, often warm, to reach acid grade specification.

Concentrate dewatering

Thickening and filtration to the moisture specification for the product grade.

Tailings handling

Thickening and disposal, with water returned to the circuit.

Equipment in this circuit

Manufactured at our own bases and matched to the circuit capacity, not bought package by package.

Jaw crusher

PE series for primary crushing and PEX series for secondary and fine crushing.

Ball mill

Wet grid mills for primary grinding and overflow mills for secondary grinding.

Spiral classifier

High weir classifier for closed circuit grinding and ore washing.

Flotation cells

SF, JJF, XCF, KYF and BF machines up to 320 m3, plus flotation columns.

Thickener

Deep cone and high efficiency thickeners up to 100 m diameter.

Filter press

Plate and frame and membrane presses for concentrate and tailings dewatering.

Reference projects

Figures are those reported for these projects in the Xinhai project and test brochures.

Italy

1,200 t/d fluorite EPC plant, our first full-scale EPC project in Europe, CE certified throughout

EPC

Common questions

What made the Italian project different?

It was Xinhai's first full-scale EPC project in Europe and was delivered with CE certification throughout, which sets the design, documentation and equipment conformity requirements for the whole plant.

Can Xinhai reach acid grade fluorspar?

Acid grade requires multi-stage cleaning and tight reagent control, and whether a given ore reaches it is settled by flotation test work on the sample rather than by reference to another deposit.

What other industrial minerals does Xinhai process?

Feldspar, barite, andalusite and wollastonite, alongside fluorite. A wollastonite mining contract in Jiangxi held ore dilution below 5%.

Send the assay and the tonnage target for your Fluorite project.

We start with test work on your sample, then size the circuit around the result. Tell us where the project stands and what you need next.