---
title: "Ceramic Disc Vacuum Filter for Iron Ore & Tailings"
description: "Reference ceramic disc vacuum filter line for iron ore concentrate and tailings dewatering: low cake moisture, clear filtrate and reduced vacuum energy."
url: https://www.waste-water-equipment-factory.com/projects/iron-ore-tailings-ceramic-vacuum-filter/
updated: 2026-11-10
---

# Ceramic Disc Vacuum Filter for Iron Ore & Tailings

Reference ceramic disc vacuum filter line for iron ore concentrate and tailings dewatering: low cake moisture, clear filtrate and reduced vacuum energy.

- Sector: Mining & Minerals
- Capacity: 10–100 t/h dry solids (design range)
- Process: Thickener underflow + ceramic disc vacuum filter

> A ceramic disc vacuum filter uses microporous ceramic plates and capillary action to dewater mineral slurries with clear filtrate and lower vacuum energy than conventional cloth disc filters. This reference line covers feed conditioning, filtration, plate cleaning and water recovery for iron ore concentrate or tailings.

## The challenge

Iron ore beneficiation plants must dewater concentrate before shipment or pelletizing, and increasingly must dewater tailings for dry stacking or to recover process water. Cake moisture directly affects freight costs, handling and downstream processing, while filtrate quality determines whether water can be recycled to the mill without causing scaling or solids build-up.

Conventional cloth disc vacuum filters move large volumes of air through the cake, which drives high vacuum pump power, and filter cloths blind and wear, requiring frequent replacement. Operators look for a filter that delivers low, consistent cake moisture with lower energy demand and less consumable handling.

## Our solution

The reference solution is a **ceramic disc vacuum filter line**. Each disc is made of sectors of microporous alumina ceramic. Because the micropores are small enough for capillary forces to keep them saturated with liquid, water passes through under vacuum while air is largely blocked once the plate is wetted. The vacuum system therefore handles mainly filtrate rather than air, which typically reduces vacuum energy substantially compared with cloth disc filters and produces a very clear filtrate.

As the discs rotate, each sector passes through four zones: cake formation in the slurry trough, cake drying above the slurry, cake discharge by scrapers, and backwash with filtrate to reopen the pores. Combined ultrasonic and dilute acid cleaning, run automatically at intervals, removes fine particles and scale from the ceramic.

Upstream, a thickener raises slurry density for filtration. Where thickener capacity or site space is limited, a lamella (inclined plate) thickener can be used to recover water and concentrate the feed in a compact footprint.

## Process flow

1. **Thickening** – slurry is thickened to a high solids concentration in a conventional or lamella thickener; overflow water is recycled.
2. **Feed distribution** – thickened slurry is pumped to the filter trough with level control and agitation to keep solids in suspension.
3. **Cake formation** – submerged ceramic sectors draw filtrate through the micropores, building a cake on the plate surface.
4. **Cake drying** – as sectors rise above the slurry, vacuum continues to draw moisture from the cake.
5. **Cake discharge** – ceramic scrapers remove the cake onto a belt conveyor.
6. **Backwash** – filtrate is pushed back through each sector to clear the pores before it re-enters the slurry.
7. **Periodic cleaning** – ultrasonic and dilute acid cycles restore plate permeability.
8. **Water recovery** – filtrate is collected in a receiver and returned to the process water system.

## Scope of supply

- [Ceramic disc vacuum filter](/products/sludge-dewatering/) units with ceramic plates, trough, agitator, scrapers and drive
- Vacuum pump, filtrate receiver and filtrate pump
- Automatic backwash, ultrasonic and acid cleaning system
- Optional [lamella inclined-plate thickener](/products/lamella-clarifiers/) for feed thickening and water recovery
- Alternative or complementary [filter press dewatering](/products/sludge-dewatering/) for very fine or clay-rich tailings
- PLC control panel, vacuum and level instrumentation, and spare ceramic plates
- Filtration test support, installation supervision, commissioning and training

## Why this configuration works

**Low energy per tonne.** Because wetted ceramic plates block air, the vacuum pump is much smaller than for a cloth filter of similar area, which is the main operating cost advantage of the technology.

**Clear filtrate for water recycling.** Fine micropores retain nearly all solids, so filtrate can usually be returned directly to process water, reducing makeup water demand.

**Consistent cake moisture.** Ceramic plates do not stretch or blind in the way cloth does, so cake moisture stays more stable over time when slurry feed is consistent.

**Fewer consumables.** Plates are long-life components and are replaced individually rather than changing whole cloth sets.

**Sizing is test-based.** Throughput and moisture depend on particle size distribution, mineralogy and slurry density, so the design uses laboratory or pilot filtration results rather than generic rates. For very fine or clay-rich tailings, a filter press may achieve better results, and we will recommend it where the test data point that way.

To evaluate a ceramic filter for your plant, send the material type, particle size distribution, slurry density, required capacity and target cake moisture to inquiry@waste-water-equipment-factory.com or through our [contact page](/contact/).

*Reference configuration — final design depends on site data.*

## Design basis

| Parameter | Value |
| --- | --- |
| Feed material | Iron ore concentrate or fine tailings, thickened slurry |
| Design capacity | 10–100 t/h dry solids (multiple units in parallel) |
| Filter area per unit | Typically 15–60 m², selected by filtration test |
| Expected cake moisture | Typically 8–10% for magnetite concentrate; higher for fine tailings |
| Filtrate solids | Typically < 50 mg/L (clear filtrate) |
| Plate cleaning | Backwash + ultrasonic + periodic dilute acid cleaning |

## FAQ

### How does a ceramic disc vacuum filter differ from a conventional disc filter?

Instead of filter cloth, it uses ceramic plates with micropores fine enough that capillary forces keep them full of liquid. Water passes but air does not, so the vacuum pump handles very little air, reducing energy use and producing clear filtrate.

### Can ceramic filters dewater tailings as well as concentrate?

Yes, but tailings are usually finer and may contain clay, which lowers throughput per square meter and raises cake moisture. Laboratory filtration tests on the actual slurry are essential before sizing.

### What maintenance do ceramic plates need?

Plates are cleaned automatically by backwashing every cycle and by ultrasonic and dilute acid cleaning at set intervals. Plates are replaced individually when damaged or when permeability can no longer be restored.

## Contact

- Email: inquiry@waste-water-equipment-factory.com
- WhatsApp / Tel: +86 176 2154 1688
- Quotation form: https://www.waste-water-equipment-factory.com/contact/
- Company: Shanghai Mars Industrial Co., Ltd., Shanghai, China