Fine Sand Recovery & Filter Press Environmental Line

Overview

Where this process fits

This solution is for wet sand washing projects that need to reduce fine sand loss, treat muddy tailwater and plan water recycling.

The line does not replace the front-end crushing or washing process. It works as an environmental and recovery section after wheel sand washer, spiral sand washer or other wet washing equipment.

Process

Typical process flow

01. Raw material feeding

Feed stone or sand material into the crushing and washing line according to the front-end process.

GZT grizzly feeder or ZSW vibrating feeder

02. Primary crushing

Reduce large rock or aggregate feed before secondary crushing and screening.

WLC jaw crusher

03. Secondary crushing

Match the crushing section according to material hardness and finished aggregate requirement.

PCZ heavy hammer crusher, single-cylinder cone crusher or multi-cylinder cone crusher

04. Screening and grading

Separate aggregate sizes and prepare suitable material for washing.

Inclined screen, horizontal screen or WLGSX trommel screen

05. Sand washing

Wash sand and aggregate, creating overflow slurry that contains fine sand and mud.

XS wheel sand washer, LSX spiral washer or 2LSX double spiral washer

06. Fine sand recovery

Recover fine sand from washing overflow and send concentrated sand to dewatering.

WS tailings recovery machine with hydrocyclone, slurry pump and dewatering screen

07. Dewatering

Dewater washed sand and recovered fine sand before conveyor stockpiling.

WLTS high frequency dewatering screen

08. Filter press slurry treatment

Treat remaining muddy water, discharge filter cake and return clarified water for washing reuse where site water quality allows.

HHT automatic plate-and-frame filter press with slurry pump and buffer pond

Flow Routes

Material, fine sand and water flow

Finished sand route

Raw material -> washing machine -> WLTS dewatering screen -> WLB belt conveyor -> finished sand stockpile

Fine sand recovery route

Washing overflow slurry -> WS tailings recovery machine -> hydrocyclone concentration -> dewatering screen -> recovered sand stream

Wastewater and filter press route

WS overflow wastewater -> buffer / settling pond -> slurry pump -> HHT filter press -> clarified water return and filter cake discharge

Equipment Matching

Equipment by process section

Process role	Equipment reference	Selection note
Feeding	Feeding Equipment	Choose grizzly or vibrating feeding according to raw material size and whether pre-screening is required.
Primary crushing	WLC Jaw Crusher	Used when the washing line includes front-end rock crushing before sand washing.
Secondary crushing	Heavy Hammer Crusher / Hydraulic Cone Crusher	Heavy hammer crushing suits suitable medium-low hardness material; hydraulic cone crushing should be discussed for hard rock.
Screening	Vibrating Screen / WLGSX Trommel Screen	Use vibrating screens for aggregate grading; use trommel screen for high-mud pre-screening.
Sand washing	Sand Washer	Wheel washer and spiral washer are matched by mud content, capacity and washing depth.
Dewatering	WLTS High Frequency Dewatering Screen	Dewaters washed sand and recovered fine sand before belt conveying.
Fine sand recovery	WS Tailings Recovery Machine	Core equipment for recovering 0.075-0.6 mm fine sand from washing overflow.
Filter press treatment	HHT Plate-and-Frame Filter Press	Used for slurry concentration, filter cake discharge and clarified water return planning.
Conveying	WLB Belt Conveyor	Transfers washed sand, recovered sand and finished products between sections.

Equipment Scope

Standard and optional equipment by section

Process section	Standard equipment	Optional equipment
Feeding	GZT grizzly feeder for large raw material before crushing.	ZSW vibrating feeder when the material is cleaner and more uniform.
Primary crushing	WLC jaw crusher series such as WL80 / WL110 / WL125 / WL140 / WL160 / WL200.	Mobile jaw crushing unit can be discussed for frequent site relocation.
Secondary crushing	PCZ heavy hammer crusher, single-cylinder hydraulic cone crusher or multi-cylinder hydraulic cone crusher depending on material hardness.	SHKX reversible fine crusher for premium sand shaping when the feed size and material allow.
Aggregate screening	Inclined vibrating screen or horizontal vibrating screen.	WLGSX trommel screen for high-mud feed pre-screening.
Sand washing	XS wheel sand washer, LSX single spiral washer or 2LSX double spiral washer.	RXT rotary scrubber for high-sticky-clay weathered material.
Fine sand dewatering	WLTS high frequency dewatering screen.	Ordinary single-deck dewatering screen may be discussed for simpler layouts.
Fine sand recovery core	WS tailings recovery machine with hydrocyclone and slurry pump.	Enlarged dual-cyclone configuration for high mud or high capacity.
Slurry deep treatment	HHT automatic pull-plate plate-and-frame filter press.	Dosing tank, slurry pump, buffer pond and pipeline system.
Material transfer	WLB belt conveyor set.	Sealed dust-control belt or tripper conveyor according to stockpiling layout.
Environmental auxiliaries	Spray dust suppression where the crushing and transfer sections require it.	Magnetic separator for recycled aggregate feed, sound enclosure or water-quality monitoring module can be discussed as project auxiliaries.

Capacity

Capacity planning ranges

The following packages are early planning references. Final equipment size depends on washing water volume, mud content, fine-sand content, pond condition, filter cycle and local environmental requirement.

Line size	Typical capacity target	Configuration idea
Small washing environmental line	50-100 t/h	XS2410 wheel sand washer + WS8018 / WS9020 tailings recovery + WLTS1230 dewatering screen + HHT30/800 filter press; front-end reference WL80 jaw crusher + PCZ1008 heavy hammer crusher + 1230 inclined screen + small WLB belt set.
Medium washing environmental line	100-200 t/h	LSX1580 single spiral washer + WS1225 / WS1530 tailings recovery + WLTS1536 dewatering screen + HHT60/1000 filter press; front-end reference WL110 jaw crusher + PCZ1310 heavy hammer crusher + 1548 three-deck inclined screen + medium WLB belt set.
Large washing environmental line	200-300 t/h	2LSX1580 double spiral washer + WS1836 / WS2042 dual-cyclone tailings recovery + WLTS1842 / WLTS2048 dewatering screen + HHT100/1250 to HHT150/1250 filter press; front-end reference WL140 / WL160 jaw crusher + HPY multi-cylinder cone crusher + 1860 / 2060 screen.

Package References

Reference packages by capacity range

These package references come from the user-provided model directions and current public product range. Technical review is still required before quotation.

Small washing environmental line

Small sand washing plant or compact site where fine sand loss and pond cleaning need improvement.

50-100 t/h

Washing host: XS2410 wheel sand washer
Fine sand recovery: WS8018 / WS9020 tailings recovery machine
Dewatering: WLTS1230 dewatering screen
Filter press: HHT30/800 automatic pull-plate filter press
Front-end crushing: WL80 jaw crusher + PCZ1008 heavy hammer crusher
Screening: 1230 inclined vibrating screen
Conveying: small WLB belt conveyor set

Medium washing environmental line

Mainstream sand plant with continuous washing and daily wastewater treatment.

100-200 t/h

Washing host: LSX1580 single spiral sand washer
Fine sand recovery: WS1225 / WS1530 tailings recovery machine
Dewatering: WLTS1536 dewatering screen
Filter press: HHT60/1000 automatic pull-plate filter press
Front-end crushing: WL110 jaw crusher + PCZ1310 heavy hammer crusher
Screening: 1548 three-deck inclined screen
Conveying: medium WLB belt conveyor set

Large washing environmental line

Large aggregate plant or high-output washing line with stronger environmental requirements.

200-300 t/h

Washing host: 2LSX1580 double spiral sand washer
Fine sand recovery: WS1836 / WS2042 dual-cyclone tailings recovery machine
Dewatering: WLTS1842 / WLTS2048 dewatering screen
Filter press: HHT100/1250 to HHT150/1250 automatic filter press
Front-end crushing: WL140 / WL160 jaw crusher + HPY multi-cylinder hydraulic cone crusher
Screening: 1860 / 2060 multi-deck screen
Support: dual slurry pump groups, larger dosing system and enclosed dust-control belt discussion

Feed Materials

Suitable feed materials

Front-end washing feed: river pebble, granite, limestone, weathered mountain sand, quartz sand, manufactured crushed stone and low-hardness bluestone.
Washed recycled aggregate from construction waste can be discussed when the washing process is confirmed.
Treatment medium: sand washing overflow slurry containing fine sand, soil, clay and stone powder.
Settling pond sludge and tail mud from existing sand washing plants.

Mud Content

Mud-content assessment

Low mud: Mud content below 10%; settling pond sludge is limited. A WS fine sand recovery machine can be discussed first, while the filter press may work intermittently or remain optional.
Medium mud: Mud content around 10%-25%; WS fine sand recovery plus HHT filter press is recommended for regular wastewater treatment.
High mud: Mud content above 25%; the complete system should be discussed, with larger cyclone configuration, slurry pump capacity and filter area.

Output Targets

Target products and operating goals

Recover fine sand from washing overflow and produce usable 0-5 mm recovered sand where the grading meets the buyer's requirement.
Separate mud and water so clarified water can return to the washing system, reducing fresh-water demand under suitable site conditions.
Press slurry into filter cake for hauling, backfill or other permitted use. Reference filter cake moisture depends on mud properties and filter-press operation.
Reduce wastewater discharge pressure and settling pond cleaning work, supporting stricter environmental project planning.

Washing

When washing is required

This complete line is only used with wet sand washing projects. Dry crushing and screening lines do not create washing slurry and normally do not need WS + HHT equipment.
If the project only produces coarse aggregate and does not recover 0-5 mm sand, a simpler pond-based water treatment plan may be discussed first.

Wet Process

Optional wet-processing section

Dosing tank with PAC / PAM may be discussed when the slurry requires chemical conditioning before filter pressing.
Larger or dual hydrocyclone configuration can be discussed for high-mud and high-capacity washing plants.
PLC integrated control can be discussed when the buyer needs coordinated pump, recovery and filter-press operation.
Pipe insulation and enclosed workshop should be discussed for freezing winter regions.

Finished Sizes

Finished product size references

Recovered fine sand

0-5 mm washed / recovered sand
Used for commercial concrete, permeable brick or other downstream uses only after buyer testing

Graded aggregate

5-10 mm
10-20 mm
20-31.5 mm

Filter cake and water

Filter cake moisture is a reference value and depends on mud properties, conditioning and filter cycle.
Clarified water reuse is a project target, not an unconditional guarantee.

Outputs

Main product outputs

Recovered fine sand: 0-5 mm, used as manufactured sand where grading and cleanliness meet the buyer's requirement.
Graded aggregate: 5-10 mm, 10-20 mm and 20-31.5 mm when the front-end line includes aggregate screening.
Filter cake: treated mud cake for hauling, backfill or other permitted use according to local rules.
Clarified water: returned to the washing system where water quality and site layout allow.

Selection Limits

Key selection limits

Suitable for wet sand washing lines where fine sand loss is significant or settling ponds clog frequently.
Suitable when local environmental requirements restrict wastewater discharge and a zero-discharge planning target must be discussed.
Suitable when mud content is high and pond cleaning cost is becoming a major operation problem.
Suitable when the site has limited space and cannot build large multi-stage settling ponds.
Suitable when the buyer wants to recover lost fine sand and improve finished sand yield.
Not needed for dry crushing and screening lines with no washing water or slurry.
If the project is below 30 t/h and temporary, a small WS recovery unit plus periodic pond cleaning may be discussed before a full filter-press system.
If slurry contains plastic, wood chips, grass or other floating trash, a front-end grating or filter screen should be added to protect cyclone and filter plates.
For freezing winter regions, pipe insulation and enclosed workshop planning should be included.

Inquiry Data

Information needed before a proposal

Raw material photos, washed slurry sample videos and mud-content information
Target hourly capacity of the washing line
Maximum feed size and material hardness for the front-end crushing line
Whether 0-5 mm premium manufactured sand is required and whether there is a fine-sand recovery target
Local environmental requirement: whether wastewater discharge is restricted or zero-discharge planning is required
Site length and width, existing pond size and site elevation difference
Power supply voltage and available clean-water source
Whether PLC integrated control is required for pumps, recovery unit and filter press
Winter temperature and whether a closed workshop is planned
Budget direction: simplified pond-assisted recovery or full automatic filter-press environmental line

FAQ

Frequently asked project questions

When should a sand washing plant add fine sand recovery and filter press treatment?

Add this line when washed overflow carries saleable fine sand, settling ponds fill quickly, or wastewater discharge is restricted. The core equipment is usually the WS fine sand recovery machine, WLTS dewatering screen and HHT filter press.

Can this line replace the sand washer?

No. It works after a sand washer or other wet washing equipment. The washer cleans the sand; the recovery and filter-press section handles overflow slurry, recovered fine sand, mud cake and recycled water.

What must be checked before sizing the filter press?

The slurry volume, mud content, fine-sand content, existing pond size, filter cycle, target water reuse and local discharge rule must be checked before selecting the HHT filter press.

Equipment pages commonly linked to this solution

WS Fine Sand Recovery Machine WLTS Dewatering Screen for Washed Sand HHT Filter Press for Sand Washing Wastewater XS / LSX Sand Washing Machine WLB Belt Conveyor