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OCL India Limited

New Delhi, Delhi

| GST  07AAACO1354J2ZJ

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Coke Oven

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LF/VD and VAD

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Sliding Gates

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BOF/LD Converter

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Dealer of refractory and cement.+ Read More

Nature of Business

Manufacturer

Year of Establishment

1932

Legal Status of Firm

Limited Company (Ltd. / Pvt. Ltd.)

GST Number

07AAACO1354J2ZJ

Coke Oven
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Coke Oven

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OCL is a leading silica coke oven refractory manufacturer in the world
 
OCL through its initial know-how from Dr C OTTO and subsequent intensive R&D efforts has established itself as a  leading silica coke oven refractory manufacturer in the world.
 
With its installed capacity of 30000Tons/year OCL has to its credit an impressive list of supply references for Coke Oven silica refractories, both in domestic and overseas markets.
 
With its wide experience OCL can supply silica refractories to all international specifications such as DIN, JIS, BS, NSC and also to all international designers, such as OTTO, GIPROKOKS, KARL STEEL etc.
Features 
The special features of OCL silica bricks  for Coke Oven are :
Low residual quartz
Low creep
Consistent & smooth thermal expansion characteristics
High hot strength
Low statistical variation in property data ensured by quality assurance system
High dimensional accuracy enabling accurate and fast construction.

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LF/VD and VAD
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LF/VD and VAD

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OCL offers Magnesia carbon bricks with improved carbon bonding
 
Zone and Bottom varies with different operating conditions such as LRF, VD and VAD

OCL offers Magnesia carbon bricks with improved carbon bonding and special characteristics like low coked porosity, high coked CCS, excellent corrosion, erosion, thermal shock and oxidation resistance and high hot strength have been developed and given for different zones depending on operational severity and cost effectiveness

Alumina magnesia carbon bricks having controlled residual expansion are recommended for the MZ and bottom of ladle furnaces to prevent joint erosion and metal penetration. Specially for impact resistance in striker pad area AMC-3 bricks are preferred.

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Castable for BF Runner Endless Lining
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OCL offers High performance Al2O3-SiC-C based Ultra low cement castables
 
OCL offers high performance Al2O3-SiC-C based Ultra low cement castables for endless lining of B.F. Runners are developed in collaboration with TYK, Japan. These castables are tailor-made for particular working environment. These have performed upto 1.7 million and 0.5 million tons in a 2000 m3 and 3200 m3 Blast furnace
 
Special Features
superior abrasion resistance
crack resistance
contains high purity grains, specially graded Silicon Carbide & graphitic additive that minimises the abrasion and penetration

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Insulating Refractories
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Insulating Refractories

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Depending on vulnerability to operational impact in different zones of an OTBC
 
Depending on vulnerability to operational impact in different zones of an OTBC, different quality magnesia carbon bricks with special characteristics that suits the best for that zone are offered by OCL for balanced erosion and cost effectiveness.

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Sliding Gates
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Sliding Gates

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Technical collaboration of new generation slide gate system has been taken from TYK Corporation, Japan who is the world leader in this field. This system implies higher multiple life with much safety so that cost per heat will go down without taking any risk.
 
Special Features
Higher stroke length(180 mm for TN80 & 140 mm for TN60) with off centre bore, results higher life of plate
The machine can be operated with existing adapter plate & cylinder with minor change in Bell Crank
Four point tightening system of Plate to have less possibility of crack during use
Better Safety with high heat resistant coil springs
Specially designed geometry of plates to have minimum thermal stress during use
Higher Spigot area of plate to get high face pressure during use resulting less chance of Metal penetration in between plates
Low maintenance
Small & Compact design for easy handling
Life of Plates is 2 - 3 time more then that of existing lower generation mechanism

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Blast Furnace Stoves
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Blast Furnace Stoves

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OCL has developed world class silica bricks for heavy duty Blast Furnace Stoves
 
OCL has developed world class silica bricks for heavy duty Blast Furnace Stoves with its initial experience in manufacturing silica bricks for coke oven. This has won the confidence of world known stove designers like DCE, DME, Paulwurth, Siemen-VAI, NSC.
 
OCL has supplied silica, fire clay and high alumina refractories for a number of projects worldwide. OCL has received wide appreciation from overseas customers for timely delivery, good packing and dimensional accuracy of the product.


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BOF/LD Converter
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BOF/LD Converter

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OCL offers different quality Magnesia carbon bricks with improved carbon bonding
 
New lining
OCL offers different quality Magnesia carbon bricks with improved carbon bonding and having special characteristics as regard to corrosion resistance, erosion resistance, oxidation resistance and thermal shock resistance are used in different zones for balanced/ uniform erosion and cost effective lining.
 
Maintenance
Tailor made gunning material and hot patching mass is applied for prevention as well as repair maintenance of BOFs. The characteristics of these materials are
Gunning mass
 Easy stick-ability with low rebound loss and high corrosion and erosion resistance
Hot patching mass
 High flowability, steakability, corrosion and erosion resistance
Tap hole sleeve assembly
 
Characterized by excellent corrosion, abrasion and thermal shock resistance
Available in single piece made by CIP and also in segmented assembled form
Produce different designs of Tap hole sleeve assembly as per customers’ requirement
Tap hole fixing mass
 Magnesia ramming mass is applied in between Tap hole block and tap hole sleeves by very high purity gunning material having high bonding strength. Our products OC tap ram M95 and OC Tap Ram M95S are specially designed for this purpose

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Refractory Well Block
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Refractory Well Block

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OCL offers high performance ULCC and Spinel based Precast shapes in various designs of monolithic blocks
 
OCL offers high performance ULCC and Spinel based Precast shapes in various designs of monolithic blocks.
The demand for long continuous castings and inert gas purging for producing high purity steels could easily be met by application of Precast Slide Gate Well Blocks and Porous Plug Seating Blocks.
In addition, Precast Blocks tailored to different designs can be manufactured for use in the impact area of LF/VD, VAD, VOD and steel teeming ladles to enhance the life of bottom lining.
 
Special Features
High Hot Strength
Good Spalling Resistance
High Density
Superior Erosion Resistance
Low Penetration Depth

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Monolithic/Argon/ Oxygen Lances
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OCL manufactures ULCC based MONOLITHIC LANCES for varied operations
 
OCL manufactures ULCC based MONOLITHIC LANCES for varied operations as follows
Monolithic rinsing lance for argon & nitrogen bubbling in steel
Monolithic lance for oxygen blowing in steel treatment process (IRUT)
 
Special Features
Excellent erosion resistance, superior spalling resistance
Meticulously designed centre & tuyere pipes for strong construction, minimum pipe bending
Increased thickness at slag line and lance tip for balanced erosion
Minimum differential expansion between castable & centre pipe for prevention of cracks during treatment
 
Argon Rinsing:OCL MONOLANCE AR-1
Oxygen Blowing:OCL MONOLANCE OB-1

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EAF - with Launder Tap
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EAF - with Launder Tap

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OCL offers Magnesia carbon bricks having different specific properties for working lining of Metal zone, Slag zone and Hot spot area of EAF lining. The quality is recommended considering the feed material and operating parameters of a furnace.

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OCL manufactures a range of High performance Directional Purging Plugs
 
OCL manufactures a range of High performance Directional Purging Plugs suiting to customised design and secondary metallurgical operations adopted by different steel plants. Plugs are based on tabular alumina, alumina-magnesia spinel and alumina-chrome based materials.
 
Special Features
High resistance to slag and abrasion
High thermal shock resistance
Low RTE values
Numbers of purging slits vary from 20-30
Slit Thickness of 0.25-0.30 mm
Minimum risk of metal infiltration
High Blowing capacity of 1000-1200 Lt./min
Product range covers various designs as desired by the customer
   

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VOD Chrome Mag Bricks

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OCL offers Mag-dolo bricks and direct bonded & re-bonded fused magnesia chrome bricks to resist the severity of VOD operations such as high operating temperature, low basicity slag and severe turbulence of steel.
Magnesia carbon bricks having low carbon content are also offered for SZ of VOD furnaces.

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OCL offers both Mag-dolo and Mag-chrome bricks for AOD converters
 
OCL offers both Mag-dolo and Mag-chrome bricks for AOD converters. Mag-dolo bricks made from synthetic mag-dolo clinker have high density and purity and so exhibit uniform physical, chemical and thermal properties. Bricks show excellent hydration resistance, high corrosion resistance to secondary refining slags with low basicity and high hot abrasion resistance to metal.
In addition to mag-dolo quality, Direct bonded and re-bonded fused magnesia chrome bricks are also recommended for AOD furnaces.
 
Tuyere
OCL offers Re-bonded fused magnesia chrome bricks having high thermal shock resistance and corrosion resistance as tuyere blocks with different bore sizes.
 

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Insulating Refractories

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Al2O3-Cr2O3 based castables has emerged as a suitable alternative for roof application and addressed some of the operational severity and led to significant improvement of roof life. Its unique characteristics have improved the reliability of roof and increase furnace availability.

The following properties become active in this material during operation
Monolithic structure prevents undue expansion/contraction thus improving stability of the roof structure
Lower permeability of castable structure restricts penetration of gases at high temperature
Coarse texture and dense matrix gives higher abrasion resistance
The Al2O3-Cr2O3 solid solution in the matrix imparts superior corrosion to slag ingress and restricts structural spalling
The controlled grain size distribution enhances thermal spalling at high meltdown temperature. The precast shape gives high strength and stability to the structure during up, down and swings of the roof
OCL offers the following
EXCELCAST 80CR
ULTRACAST 90CR

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Castable for Endless Lining in Ladle
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Castable for Endless Lining in Ladle
The latest trend in developing countries is to apply castable containing preformed spinel
 
The latest trend in developing countries is to apply castable containing preformed spinel or in-situ spinel forming castable. These castable have the inherent advantage of superior erosion resistance in the sidewalls and bottom impact area of the ladle. The superior resistance is achieved owing to the presence or formation of Alumina-magnesia spinel, which restricts the penetration of molten steel into the material owing to its ability to capture MnO, CaO, FeO and forming solid solution reducing the viscosity of the slag and thus the mobility of the slag. Secondly the Al2O3-MgO phase resists the penetration of the metal into the castable matrix. The lime at high temperature simultaneously forms the high melting Ca-hexaluminate phase in the hot face, which imparts hot strength and further densification leading to improved resistance to slag and metal penetration. This material is used in combination with Magnesia-Carbon in the slag zone for prolonged and balanced wear of the ladle lining.

Castable containing preformed spinel exhibits better corrosion and slag-penetration. But the in-situ spinel forming castable has higher corrosion resistance, higher slag penetration resistance and superior thermal stress relaxation ability. The latter is preferred increasingly in ladle sidewalls and bottom especially impact area.

  
OCL offers the following castables for this area 
CASTMAG 7M - Alumina-magnesia in situ spinel forming castable
CASTMAG FC30S - Spinel based castable

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