HERA Knife gate para industria minera GIW.pdf

KSB Valves application in Mining IndustryMining Industry

KSB 2013

SAG Mill Ball Mills

Hydrocyclones Ball Mills

Milk of lime plant Flotati

cells

Was

cells

Mineral ore

Copper grinding and concentrator Minerals pipelineand concentrator Plant

Minerals pipeline

Valves in mining industry

Minerals Grinding

on

and Concentration te water treatment

Main segments:Thickener

A. Robust grinding- SAG mill

B Fi i diB. Fine grinding- ball mill

C. Fractionationh d l- hydrocyclone

D. Flotation (neutralize, sediment, dry)- milk of lime plant

thickener

Neutralize,

- thickener

E. Transportation of minerals

2

sediment

F. Mining water treatment

mvillanteCuadro de texto


Minerals Grinding and ConcentratiPhase Function

to robust grinding the mineraore to output grain size betw

SAG Mill(Semiautogenousgrinding)

ore to output grain size betw0.1~0.3 mm. during grinding, the ores mixwith water to form slurry whiconcentration can reach 70%

lidsolid.

to fine grinding the mineral oto output grain size less than0 1Ball Mills

(Secondary mill)

0.1 mm.during grinding, the ores mixwith water to form slurry whiconcentration can reach 70%solid.

Hydrocyclones(fractionation)

to seperate sand sediment obig grain size by means of centrifugal force and removecentrifugal force and remove

ion Working condition Valve description Valve type

al weenMedium: slurry of ween

xed ich % of

concentration 70%;Temperature: ambient.Max. pressure: 5 bar.Highly abrasiveConstant vibration

Thick seats and valve body;flanged end;natural rubber seats

Constant vibration

Slurry Knife Gate Valve

ore n Medium: slurry of concentration 70%;

- HERA BDSxed ich % of

concentration 70%;Temperature: ambient.Max. pressure: 5 bar.Highly abrasiveslight vibration

thinner seats;lug type

of

e

similar condition to ball mills;continuous valve drives;Max. pressure: 8 bar

3

e Max. pressure: 8 bar


Minerals Grinding and Concentrati

Phase Function

Milk of lime plantmilk of lime is a kind of additivehelp filtrate the mining slurry used for floatation process.

to form the soft slurry with slighThickening & Filtration

to form the soft slurry with slighconcentration of 40% and thin grain size

Minerals pipeline to transport the dried minerals tnext destination.

ion

Working condition Valve description Valve type

EPDM or metallic seats

e to thin slurry tend to glue together and from clumps when it cools off. Hence operation temperature is 50 70 degree

EPDM or metallic seats shall be used;bronze scraper shall be applied;valve type selection shall be Cone Pinch50~70 degree. shall be Cone, Pinch and passing knife. Through Going

Knife Gate Valve- HERA BHT

ht

soft slurry with 40% concentration;siltation tendency;

natural rubber or EPDM seats;ht siltation tendency;

milk of lime easy to stick to metal contact surfaces, creating a crust that's hard to remove.

seats;passing type and O port knife gate valve is recommend

to

slope pipeline to accelerate the circulation speed. The flow particles have a sandpaper effect to valve seat and any other ocntact

metallic seats and chrome and tugnsten coated surfaces;metal seated ball valve

Metal seated ball valve

4

seat and any other ocntact surface.

metal seated ball valve


Minerals Grinding and Concentrati

Phase Function

Waste water

to convert the existent water present in slurry and fluids in reusable water Filtration andtreatment

(mining water)

reusable water. Filtration and purification methods are usedlime milk in order to neutralizetailings.

Regrinding and Tailings

to fine grinding the particles smaller thank 180 microns;

ion

Working condition Valve description Valve type

the mix (contains highthe mix (contains high amount of lime) sticks to metal contact surface and form crust that's hard to remove. O port passing knife valve are more suitable Through Going

d for e the

pH 9-11, some acidified water is pH 3.several sizes of particles include rocks and wood chunks may fallen into the

valve are more suitable to avoid sediment deposits.

Knife Gate Valve- HERA BHT

ycollecting pools and tanks.

slurry concentration is up to Sl K ifslurry concentration is up to 60% of solids;temperature: -5~30 degreeMax. pressure: 5 bar

thinner seats;lug type;

Slurry Knife Gate Valve- HERA BDS

5

KSB Knife GHERA BHHERA BH

Technical Data PN10,16, Clas DN 80 600 Material: WCB Connection: lug Knife: AISI 304 Seat ring: 304+g

EPDM, VITON

Temperature: - Variants: Pneu

actuatorsactuators.

HERA BHT

Gate ValveHT (through going type)HT (through going type)

a: Product features:s 150 drilled

, CF8, CF8M

a through-going gate for secure shut-off of concentrated and static media.

This shut-off performance, along with its flow characteristics makes it suitable for, ,

g, wafer

4,316,410+HCr

+HCr, 316+HCr, PTFE,

flow characteristics, makes it suitable for severe operating conditions with media as pulp (>5%), caustic liquor, reject and waste, but also suitable for other applications with powder, slurry and ash.

N

-20 ~ 100umatic and electric

6I HERA Knife Gate Valves I KSB China I March 2013 |


HERA BHT:Benefits to customerRenewable yoke can suit with different type of operation and shift quickly and conveniently.

Body is stronger to contain higher fluid pressure due to casthigher fluid pressure due to cast steel materials for valve construction.

Valve port is one line with pipeline at full open position with low flow resistance which help for users to save cost onfor users to save cost on process.

HERA BHT

Two-piece body construction with no room left for pulp building up inside which avoid the default and maintenance cost while operation.

Reliable sealing. O-ring loaded movable seat to serve as self-movable seat to serve as selfcompensation with good abrasion resistance and long service life.

Suitable for universal use. Metal t d PTFE t d d EPDMseated, PTFE seated and EPDM

seated designs are available for various process conditions.



Products of HERA BDHERA BD

Technical DatTechnical Dat Nominal Pres Size: DN 50 Body Materia Connection: w Knife: AISI 30 Knife: AISI 30 Seat: NBR, E Temperature Variants: Pne

HERA BDS

KSBDS (Slurry Knife Gate Valve)DS (Slurry Knife Gate Valve)

ta:ta:ssure: PN10, PN16, ANSI 150

400

al: CF8 / CF8M / WCB

wafer, lugged

0404

EPDM, Natural Rubber(Vtion, Nitrile).

: -20 ~ 70 / 120eumatic and electric actuators.



HERA BDS:Benefits to customer

The stuffing box is

The body is in twoThe body is in twoentering into cavity medium application

Resilient and abraResilient and abramould with metal su

The soft seat is eaare replaceableare replaceable.

Gate bottom is in ahard chromium platwith high abrasive rwith high abrasive r

Valve is with dischcan be easily removvalve with their own

HERA BDS

valve with their own

s internal located design, with better sealing performance.

o piece design without cavity preventing solids fromo-piece design without cavity, preventing solids from and caused valve jam, which is more suitable for slurry .

sion resistant rubber seat is die casting in unique rubbersion resistant rubber seat is die casting in unique rubber upporting ring, for long term service.

asy for installation, can be taken off directly. And the seats

arc shape design with strong cutting force. The gate is ed after precision grinding for smoothness which will be

resistance and corrosive resistanceresistance and corrosive resistance.

harged device at the bottom of the valve. The back over ved off for routine cleaning. Customer can also outfit the n purge system

9

n purge system.

I HERA Knife Gate Valves I KSB China I March 2013 |


Hera Knife VPil t EPilot Exp

Pilot Experim

Three Hera i diff t l

Pilot Study 1 Hera Knife Valve

in different loapplications Pilot Stud Pilot Stud Pilot Stud



Valve KSB Chile i tperiments

ment

Knife valves with similar characteristics were placed ti t l t th i f i diff tocations to evaluate their performance in different

. dy 1 Anglo American, El Soldadody 2 Anglo American, El Soldado dy 3 Codelco Norte, Chuquicamata

I KSB Knife Valves Hera Pilot Experiment I KSB Chile I March 201310


mvillanteNota adhesivaAccepted definida por mvillante

Hera Knife Valve KConclusionsConclusions

The pilot experimeAll of the pilot studAll of the pilot studdiverse application

The Hera Knife va


Low Pressure High Pressure Low Pressure-LoPositive life time



KSB Chile

ent indicated positive and valuable information. dies achieved the performance expectations indies achieved the performance expectations in ns.

alve proved to resist the following conditions:

High Slurry Regular cycles rate

Intermediate slurry-Low cycle rate

ow slurry High cycle rate

according to competition valves

11I KSB Knife Valves Hera Pilot Experiment I KSB Chile I March 2013


HERAWeaWea

Instruc

On 25 JdelivereGIW Indfor wearThe valvFebruarApril 20consistiand cerentirety When thremainea comb

A BDS mining slurry knife gate valvearing testing in GIW USAaring testing in GIW, USA

ction:

January 2012, a KSB 4-NPS (80-DN) slurry knife gat valve was ed to the KSB,dustries, Inc., Hydraulic Laboratory in Grovetown, Georgia, USA r evaluation.ve was installed in the 4-NPS (80-DN) slurry test loop in ry 2012 and removed in13. During this period, the valve was subjected to slurries ng of sand, gravel,g , g ,amic. The valve remained in the fully open position during the of any testing.

he 4-NPS (80-DN) slurry test loop was not in service, it ed filled with tap water orpination of tap water and the solids from the previous test.

12I KSB Knife Gate Valves Mining Slurry Version I KSB China I March 2013 |


Comparison before/after installation

Valve condition

Conclusion:Considering the slurrexcessive. The valveserviceable and in gobefore installation serviceable and in goexposure for over a y

n & serviced

Valve condition after removal (03 May 2013)

ry exposure history, the valve wear was not remained

ood operating condition despite outdoor

13

ood operating condition despite outdoor year.

I KSB Knife Gate Valves Mining Slurry Version I KSB China I March 2013 |


HERA Knife gate para industria minera GIW.pdf

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