Iron Ore Processing Brochure ENG

8/19/2019 Iron Ore Processing Brochure ENG

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Several customers rely on

Larox solutions for their

most demanding proces-

ses. Larox valves and

pumps have proven their

superior quality, reli-

ability, excellent wear

resistance and anti-

jamming properties in

these processes. Also

hundreds of iron ore

processing facilities have

chosen Larox for their

most demanding applica-

tions.

From iron ore

concentration...

Larox valves and pumps are

perfect for various duties

ranging from grinding and

filtration to flocculent dosing

and thickener underflow in iron

ore concentration including

• Grinding/Screening

• Hydrocyclone Separation

• Magnetic Separation

• Flotation

• Thickening

• Filtration

• Tailings

• Additional systems such as

sampling, dosing and water treatment

...to pelletisation

Larox valves and pumps

operate reliably and trouble free

in the most demanding iron

applications. Typical applica-

tions in pelletisation are

• Slurry mixing

• Slurry feed to pelletiser • Coating

• Floor washing

Larox manual and automatic

pinch valves excel in solutions

where shut-off or control

applications involve abrasive or

corrosive slurries, powders or

coarse substances. The

number of design variations

is virtually unlimited as the

modular structure of Larox

valves enables the selection of

any actuator, valve body cons-

truction and sleeve material to

fit specific process conditions.

Larox knife gate and rotary disc

valves are engineered to be

used in shut/off applications

involving abrasive or corrosive

slurries, powders or coarse

substances. Also our slurry non

return range can be used for

automatic isolation or change

over of slurry lines.

Larox peristaltic and progressive

cavity pumps are applicable to

a wide range of applications

and they suit extremely well for

processes involving industrialpumping, dosing and metering

of abrasive, corrosive and other

demanding media.

Proven solutions in ore processing



complicates the function of

metal valves. The construction

of the Larox valve ensures that

the valve closes tightly even if

coarse particles remain bet-

ween the closing device. In the

open position, the valve is

actually a part of the pipeline.

Larox valves have remarkably

better wear resistance than

metal or ceramic valves. As the

sleeve is the only part in contact

with the medium, Larox valves

help to bring maintenance costs

down to the bare minimum.

Larox peristaltic and progressive

cavity pumps incorporate an

advanced design, which

eliminates friction, minimizes

wear and lowers energy

consumption. Designed for

heavy industrial duties, the

Larox pumps are capable of

handling the most abrasive and

aggressive slurries with high

solid content in iron ore

processing. Larox pumps are

also ideal for dosing and

accurate metering of diverse

slurries and wide range of other

media.

Multiple benefits

Larox valve is an excellent

choice for applications where

extreme abrasion and scaling

are present. In iron ore proces-

sing, the flowing medium is

typically very abrasive and

Ore Concentration

Ore from mine

Crushers

Stockpile

GrindersGrinding

Gravity

To concentrate

Screening

Primary cyclones

Magneticseparation

Cyclones

To tailing

Tailings

Filtration

Iron Ore

Concentrate toPelletising

Flotation



Low Operational Costs

Operationals Costs Larox Pinch Valve Ball Valve

Robust, reliable and cost-effective

because as a leading supplier

Larox Flowsys is able to provide

reduced total cost of ownership

(TCO), which is ensured by high

product quality, extended

product lifetime, ease of installa-

tion, long service intervals, low

Larox Flowsys is a trusted

partner for a number of leading

technology suppliers because

its products add value and

enhance process efficiency in

customer’s processes.

Company’s process and

application expertise, certified

manufacturing and delivery

processes with comprehensive

after sales services ensure

reliable on-time deliveries

regardless of the size of the

delivery.

Driven by the will to solve

problems Larox Flowsys is

committed to growing together

with its customers and partners;

to understand and help make

customers´ processes more

competitive. This is a reality

maintenance costs and superior

energy efficiency. Larox valves

and pumps are an environ-

mentally friendly and cost

effective solution for demanding

industrial flow control applica-

tions.

Larox pinch valve service interval in an automatic pressure filter, one cycle in every ten

minutes (open-close). In this application DN 100 – 150 is a typical pinch valve size.

Pelletisation Slurry from dust collectors

Thickener

BallingFeed Bins

BallingDiscs

RollerFeeder

StackFansFans

TravellingGrate

Kiln/ Furnance

Cooler

Air

Natural Gas

Kiln bypass

Storage Silo

MixersFrom Filtration

Additive Bin

Slurry Addition

RollerScreens

Dust Collection

Cooling Fans

Conveyors

ProductPellets

Pellet Coating

Pellet Stockyard

To Grinding Mill



iron slurry at 14 - 16 bar to dewatering pressure

filters. The valves operate every ten minutes,

24 hours/day.

Larox valve success at LKAB

At LKAB in northern Sweden, Kiruna,

Jällivara and Svappavaara area, more

than 1800 Larox valves are in operation.

LKAB is an international high-tech minerals

group, one of the world's leading producers

of upgraded iron ore products for the steel

industry and a growing supplier of industrial

minerals products to other sectors. Since

beginning of its operation LKAB has invested

remarkably in the development of the equip-

ment and production, and only the highesttechnology is accepted at the LKAB mines.

Proven wear resistance

Larox valves were initially chosen at LKAB,

because of high wear resistance, easy

maintenance, simple and reliable construction,

and absorption of vibration. The first Larox

valves were delivered in 1992 and since then

hundreds of conventional valves have been

replaced by Larox valves.

During the years Larox valves have proven to

be extremely reliable, trouble-free and to be

an extremely low cost solution in aggressive

and abrasive conditions. Since 1992 the

positive experiences have resulted in the

selection of Larox Flowsys as one of the main

valve and pump suppliers.

Valves with different actuators

The valve actuators are chosen according to

the needs of every application. Under one of

the main thickeners, twenty pneumatically

operated valves are connected to a dedicated

air supply tank. This arrangement ensures

that the valves can be closed even in a case

of a disturbance in the normal air supply.

At the pelletising plant, the main feed line

valves for large pressure filters were also

delivered by Larox. These are hydraulically

actuated 200 mm, PVE 200 H16 valves feeding

Processes

• Grinding, in many stages.

After grinding the main stream

is in slurry form.

• Magnetig separation

• Flotation

• Phosphorus removal

• Filtration• Pelletising

• Storage

• Tailings

• Train loading

Applications

• Iron slurry

• Dirty water

• Bentonite & Lime

• Dolomite & Olivine

• Water

• Sand slurry

• Air



Larox pinch valves were chosen in 2008when Gulf Industrial Investment Company

(GIIC) was commissioning their second iron

ore pelletising plant in the Kingdom of Bahrain.

Larox pneumatically actuated PVE 100 – 150

mm valves are operating in pellet coating and

iron ore slurry lines as well as in various side

applications. The GIIC plant provides the

highest quality pellets to markets all over the

world.

GIIC values a valve supplier that is committedto working with them during the entire life

cycle of the process plant. Among other things,

this requires reliable spare part supply from

a local stock delivered by a valve professional

such as Larox Flowsys.

Often large engineering and OEM suppliers

make compromises with valves and other

process instruments as this kind of equipment

does not belong to their core experience.

The global experienced contractors of GIIC

were in this project able to take advantage of

Larox Flowsys’ core knowledge, and the best

flow control solution was built in cooperation.

To ensure trouble-free and reliable operation

of the equipment after commissioning, Larox

Flowsys’ OEM & Projects Department works

closely with leading mining equipment and

engineering suppliers for the benefit of the

end customer.

Working together with GIIC in Bahrain



Larox Flowsys Group is a

major supplier of pinch

valves and peristaltic

pumps. With decades of

experience in flow control

and elastomer technology

and over 50 000 proven

installations, the company

has gained deep know-

ledge about the market as

well as about customers’

processes. This know-how

is continuously used to

develop new technologies

and thus foster customers’

businesses.

Larox Flowsys’ focus is on

abrasive, corrosive and other

demanding shut-off, control and

pumping applications. The

company was the first pinch

valve manufacturer in the world

to get awarded the ISO9001:

2000 Quality Certificate in 1997.

Larox Flowsys valves also meet

the new Pinch valve standard

ANSI/ISA 75.10.02.

Our expertise for your benefit

Wide variety of applications

Larox valves and pumps have

proven their suitability for a

wide range of industries and

applications in mining and metal

industry, non-metal minerals

processing, pulp and paper,

chemical process industries,

cement industry, iron and steel,

energy as well as oil and off-

shore industries. Numerous

applications also exist in water,

waste-water and effluent treat-

ment, dairy, food and beverage

production, and pharmaceutical

processing plants.

In addition, Larox Flowsys offers

comprehensive after-sale

service solutions for progressivecavity pumps in many process

applications.

Global reach,local service

Larox Flowsys Oy was estab-

lished in 1993 as a subsidiary

of Larox Oy. Today, Larox

Flowsys Group, employs some

90 people and exports about

90% of the sales. Headquar-

tered in Lappeenranta, Finland,

Larox Flowsys has subsidiaries

in Linthicum, Maryland USA

and Anjalankoski, Finland. The

global reach is ensured with

the local sales and service

network covering over fifty

countries. The most important

markets are in Europe, North

and South America and

Australia.


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LAROX FLOWSYS OY • P.O. BOX 338 • FI-53101 LAPPEENRANTA, FINLAND • TEL. +358 201 113 311 • FAX +358 201 113 300

E-MAIL [email protected] • WWW.LAROX.FI

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Iron Ore Processing Brochure ENG