Dear Shri Nithin Narayanan,

You have mentioned that you are handling iron ore pellets and iron ore in chutes. Please specify the moisture content in iron ore, iron ore lump size, and also the pellet size to give you some suggestion about the liners and also the options in chute design.

Regards,

Ishwar G Mulani.

Author of Book : Engineering Science and Application Design for Belt Conveyors.

Advisor / Consultant for Bulk Material Handling System & Issues.

Email : parimul@pn2.vsnl.net.in

Tel.: 0091 (0)20 25882916 ■

Dear Shri Nithin Narayanan,

I agree with Mr. Pradeep Rekhawar that stone box / shelves in the chute are one of the best methods to create a chute, which is free from wear problem. The chute is to be designed in such a manner that material is gliding on the surface being created by the material on the stone boxes and it is just falling in vertical portion. All horizontal movement of the material in the chute is to be done by stone box. Stone box should be spaced at such an interval that material flow in the chute at expected velocity.

As I know, one of the reputed organisations in India dealing with iron ore / pellets is regularly using aforesaid arrangement. In case, the iron ore contains very high % of moisture (creating mud type of situation), then such arrangement can create chute blockage, unless, sufficient height is accounted above stone box for material accumulation. In such situation, this arrangement should be used with caution.

Regarding type of liner, there are many brand names; and various iron ore mines, steel plants are already using such liners.

Regards,

Ishwar G Mulani.

Author of Book : Engineering Science and Application Design for Belt Conveyors.

Advisor / Consultant for Bulk Material Handling System & Issues.

Email : parimul@pn2.vsnl.net.in

Tel.: 0091 (0)20 25882916 ■

I have little knowledge of iron ore grades and properties in India.

Conveyor Dynamics, Inc. (CDI) does work with iron ore in Australia, Brazil, China, Indonesia, and other countries. When moisture and clay are factors, we propose curved hood and spoon chutes. The concepts can handle large cohesive clay lumps much better than stone boxes.

There are a number of +400-500 Brinnel metal liner plates in the 25 mm thick range. There are some metal liner plates at +1000 Brinnel with 0.10mm thickness deposited to mild steel backing.

Pellets can use alumina ceramics and metal with good service. These chutes are preferred over stone boxes due superior flow against plugging. The ceramic has to be conditioned to handle flow surface expectations.

Height does not help in sticky cohesive material. Once the material momentum is arrested, such as in a stone box, it is difficult to provide sufficient space to guarranty flow due to the internal shear resistance and very low mass flow rate. Eventually the material-to-material interface builds up to a vertical face.

Standard plates with welded or countersunk bolts are in common use. It does require periodic inspection and a proper inspection standard.

One alternative, in practice, uses a throw away backing plate and large welded single wear liner pieces. This is an expensive proposition that good maintenance crews avoid due to cost and

rework of backing plates.

Sometimes, it is possible to combine the best of both worlds using stone box in critical high impact zones. This requires a great deal more space that implies higher and non-trivial cost of structures. We have reduced iron ore transfer buildings by a factor 3 in all three dimensions.

Materials of construction and applications arel overcoming some of the perceptions that curved hood and spoon designs cannot flow with coheisive materials.

Lawrence Nordell

Conveyor Dynamics, Inc.

www.conveyor-dynamics.com ■

Try high density poliethilene , in some applications like yours has done miracles.

It does affect the wall friction angle. So take that into account in your design.

By the way by any chance your plant is in Grassim?

Good luck.

marco ■

Dear Mr R.Narayanan

as explained above you should provide stone boxes in impact zones.where ever stone box is not feasible you may go for 25 mm thick 300 mm x300 mm cast mangneese steel liners for imact and wearing zones. liners will be bolted from out side of chute Hardrox is also a very good material but will be quite expensive

A R SINGH ■

Rock boxes are of course a cheap and very effective way of reducing or eliminating wear in conveyor transfer points.

A rock box is simply a metal box where you allow your material to pile up. the material itself forms the wear resisting lining. It replenishes itself , absorves impact etc.

If you are manufacturing unbriquetted sponge iron , a rock box can cause problems.

If you are coating your ore with wet cement , a rock box can create a difficult to remove buildup.

a rock box in sponge iron can keep a ingnition point for indefinite time , what means is that this particuar transfer point will be engulfed by flames all the time, not an uncommon ocurrence .

If you are handling sponge iron you would not think of using high density poliurethane.

I am no expert but for 25 years started up , operated and in some cases modified , material handling systems for and in the HYL plants world wide, although my field was mainly in the reduction tower ,

I designed built and lead the solids characterization lab for some years. here we experimented with wear resisting materials for some time .

Toghether with Abraham Velazco and Simitrio Maldonado, a low cost high temperature(800c) wear resisting material , was developed . 190 times more resistant to wear than 304 SS , twice better than NIHard, or stellite. surpases Tritem and is almost as resistant as Hardflex.

If you are interested you can read the PHD tesis of Simitrio Maldonado, or contact me , I will be glad to give you more details.

Marco ■

We produce many chute liners with rubber with steel and ceramic etc have you tried any of this type of product? We would be happy to look at it for you.

Dan ■

Do you have a catalog?

Can you line pipes internally.

If so

what is the smallest diameter.

Marco ■

Hardox 3-5x carbon steel

Hard facing plate Cr7C3 up welding 12-15x carbon steel

we supply the chrome steel plate USD360sq meter for 6+4 ■

We shall offer you Ceramic Lined Rubber backed liner ready to install at site to suit your requirement. For your specific requirement you heve to submit your operating condition so that suitable design liner can be offered. This liner may give you life more than 10-20 times than HARDOX liner.

For further detail you may write to

sunil@hofmannindia.com

Thanks

Sunil

Hofmann Engg. & Mktg. P. Ltd.

India ■

Dear Mr. Narayanan:

Corrosion Engineering manufactures and sells wear liners with ceramic cubes embedded in rubber to mining operations worldwide including several iron ore loadout ports in Australia (BHP-Billiton and Rio Tinto properties).

We have several case studies depicting the proven success of our products.

Please visit our website (www.corroeng.com) or feel free to contact me for more details:

Regards, ■

Dear Mr. Narayan,

Please contact me at the following email address or give me your phone number so that I can call you. We are expert in Wear Resistant Liners and had supplied to many Iron ore pellets plant in India.

Regards,

Krishanu Das

Zonal Manager (West Asia)

Polymer Industries India Ltd

606, Powai Plaza,

Hiranandani Gardens, Powai

Mumbai - 400076

email: krishanu@polymerindustries.co.in

Mobile:9323799295

Landline: 022-25703847/48 ■

Dear Mr. Narayanan,

As for your requirement for high quaity wear liners for chutes handling iron ore and pellets, we TIP TOP GENERAL AGENCIES (P) LTD., New Delhi offfer very high quality ceramic linings.

This is special lining which is AL2O3 ceramic backed by very high quality rubber which can be easily cold vulcanized on to the metallic chute. The specifications such as thickness dimension of the sheet vary according to the reqirement. There are no complications of bolting into the structure. The cold bond is extremely strong with the help of REMA TIP TOP SC -2000 with bonding strength higher than 12N/mm2

We are established in INDIA since 1953 and we are the oldest SERVICING & MARKETING partners of REMA TIP TOP Gmbh, Germany world wide and the exclusive ones in INDIA.

I can forward you specific details based on your requirement.

Could you please also introduce your self and brief about your organiation.

warm regards,

varun ■

Dear Mr. Narayan,

We had experience about dealing with the iron ore impact area 300mm x 400mm in China Steel Corp. in Taiwan.

We use

Alotec Impact Ceramic in octangle type at 20 mm depth,

Rubber at 6 mm depth,

and Steel plate at 6 mm depth,

with M16 bolt at the back to fasten on the chute.

The performance has been very well since 6 months ago.

Hope it helps.

Danny Yang

Jim Way Enterprise Co., Ltd. ■

Please visit our website to view some possible solutions to your problem. Please state that you was refered by Brian Rogers.

www.lasercladding.com ■

Would you be interested in a sprayable application? We offer excellent corrosion protection. We can meet strict specifications on thickness of a smooth or textured application. We are in the US. I'm not sure if this is a problem. Please let me know if you would like to know more. ■

It's my pleasure approaching you.

This is Tsing Gao(Sales Engineer) from "Sandun ", the most famous brand of composite wearplate created in China, capturing most market shares of hardfaced wearplate in Chinese top steel&cement industry.

Sandun is a professional designer and manufacturer of wear-resistant Materials including hardfacing electrodes, composite wear plates and other industrial wear-resistant products which are widely used in steel-making, mining, dredging, cement industry, power plant, pulp and paper, petrochemical, construction, etc.

Sandun is the earliest entity who specializes in hardfacing wear material R&D in China and also a state-support and institute-cooperative company to define the wear industry standard of China. Many Sandun’s R&D achievements are on the leading edge in wear industry and numerous patents and certificates have been gained by Sandun.

Our Honors &Certificates:

*The National New Products Certificate No.2005ED740038

*High &New Technology Enterprise Certificate No.CR200837000432

*Gold Metal awarded by China National Patented Technology Committee

*Contract Honored Enterprise Certificate

*Advanced Self-Innovation Enterprise Certificate

And so on...

As a High-Tech approved entity and an ISO 9001:2000 certified company, Sandun is dedicated to create a world famous brand in wear industry.

For more information, please refer to our web via http://www.sandun.com.cn/cpzs3.asp

We are looking forward to your cooperation!

Best Regards!

Tsing Gao(Sales Engineer)

Weihai Sandun Welding Materials&Engineering Co.,Ltd

No.108,Shenyang Road,Weihai,Shandong,China

Tel:86-631-5687149

Fax:86-631-5622365

MSN: tsing.gao@hotmail.com

Web: http://www.sandun.com.cn

Cell:13562132535 ■

The iron ore mines in Australia have been using the rubber ceramic composite liners for many years with great success. These are the custom made bolt on style liners with steel backing plate not the light duty rubber backed ceramics.

They can be purchased from Valley Rubber in USA

The best contact there is Bob Cooper

Bob@valleyrubber.net ■

Originally Posted by NithinNarayanan

I am in search of good wear liners for chutes handling iron ore, iron ore pellets. We need liners which are easily installable and give a life of six months at least. Our conveyors handle @ 1000 tph. We would like to avoid bolted liners due to the risk of liners getting losetned and falling on the belt.

I am told "Hardox liner " is good for such applications.

Can I have the experience of similar users in India

Thanks

R.Narayanan

Dear R. Narayan,

We have recd. your posting from Bulk-Portal and are pleased ro learn that you are in market for Wear Liners for Chutes.

We are of the opine that Ceramic Polyurethane Liners can solve your problem and in order to enable us to send you the technical details, kindly arrange to e-mail us your contact details on utilityengineers@mtnl.net.in or simply call on my cell:09869031395.

Pls. per return e-mail send us reply ASAP.

Regards,

AMIT SHETH

EXECUTIVE PARTNER

UTILITY ENGINEERS

210- VEENA CHAMBERS

21 DALAL STREET,

OPP. BSE TOWERS, FORT,

MUMBAI - 400 001

TEL+91-22-22676936(DIR.) / 34

T/F:+91-22-22676934

CELL:=91-9869031395 ■

Originally Posted by NithinNarayanan

I am in search of good wear liners for chutes handling iron ore, iron ore pellets. We need liners which are easily installable and give a life of six months at least. Our conveyors handle @ 1000 tph. We would like to avoid bolted liners due to the risk of liners getting losetned and falling on the belt.

I am told "Hardox liner " is good for such applications.

Can I have the experience of similar users in India

Thanks

R.Narayanan

Dear Friend,

Have u ever used the alumina ceramic liner . it can meet all ur requirement. Besides , we can use the liner vulcanized on the steel plate , then a penaneting bolt shall be welded on the steel plate through screw on ceramic . it's very easy for u to install the products. and it has very competitive price. coz we are the source.

more detail in www.kingcere.com , u can also send the masseges to the micheal@kingcera.com

Have a nice day! ■

Have you ever thought about ceramic lining? ■

Hi

We have now developed a ceramic wear plate with magnet backside for easy assembling/deassembling against steel.

The plate are 500x500mm and consist of ceramictiles 20x20mm and 4mm thickness. Total thickness are est 6-7mm

The use will be chutes with fine materials.

The plate can be cut by knife between the tiles

Anyone like this idea?

Contact me on: post@mineralteknikk.no ■

We are supplier of wear protection alumina ceramics, ceramic grinding media, precision ceramic parts and inert ceramic balls (catalyst bed support media).

Please check our company web or blog for more info about our products:

www.cbcceramics.com

https://aluminaceramics.wordpress.com

If you are looking for an alternative supplier, we will be your choice.

Hope to work with you in the near future.

Best Regards,

Zhang Hongbo

Sales Manager

Qingdao CBC Co.,Ltd.

Suite 1006 Building No. 2 Celebrity International,

No. 39 Shiling Road, Laoshan Dist.,

Qingdao, China 266062

T: +86 532 8596 8596

F: +86 532 8596 8595

www.cbcceramics.com ■

Wear resistant ceramic lining – Alumina, zirconia & ZTA

Ceramic grinding media – alumina & zirconia

Steel & rubber backed ceramic plate

Pulley lagging

https://aluminaceramics.wordpress.com/ ■