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Introduction of Rice Whitening
Abrasive Stones and other products
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Sterling Abrasives Limited
• Founded in the year 1969 by Mr Nitin Parikh
• Pioneer & leader in the manufacture of Rice Whitening Abrasive Rollers in Ind
• ISO 9001 : 2008 TUV Certified Company having strength of 350 people produ
vitrified and resinoid grinding wheels / associated with Murugappa group in 199
• Turn over in 2015-16 million USD (approx Rs 66 crores INR) out of this 1/3rd o
is from export market
• Exporting Rice Whitening Stones to various countries like US , UK , Italy , Ger
Thailand, Philippines, Columbia, Vietnam, Nepal, Bangladesh, Pakistan etc.
•
Manufacture Rice Whitening Abrasive Rollers suitable for Buhler , Satake, MilSchuelle, Dandekar, Suri, Devraj Hitech, Perfect Equipment, Sona food & many
machines
• Grading successfully working for different varieties of rice
• Manufacture approx. 30000 pcs per year of different varieties of stones for rice
whitening application
• Capable to manufacture abrasive stone as per customer requirement
Company Profile
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http://localhost/var/www/apps/conversion/tmp/scratch_6/Buhler%20item%20code%20detail.xls
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Sterling Stones for Buhler - Bangalore
340 X 93 X 230mm 450 X 70 X 300m
250 X 60 X 170mm
460 X 71 X 305mm 460 X 71 X 305m
Supplying stones to
Buhler – India since last
15 years
http://localhost/var/www/apps/conversion/tmp/scratch_6/Buhler%20item%20code%20detail.xlshttp://localhost/var/www/apps/conversion/tmp/scratch_6/Buhler%20item%20code%20detail.xls
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Satake VTA 10 Satake VTSatake VTA 15
Abrasive Stones for Satake Machines
Separate facility to supply stones with properly balanced flange/hub
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Abrasive Stones for Binny Model
REC, Thailand Design Abrasive Segments
Abrasive Stones for other models
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Abrasive Stones for Scheulle - Germany
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• Mainly two types
Green Silicon Carbide & Black Silicon Carbide
Green silicon carbide
• Recommended for raw / Basmati rice
• Rice breakage % is less compared to black sic
• Whitening of rice is better
• More hardness/sharpness compared to black sic
Black silicon carbide
• Recommended for parboiled rice
• More life compared to green sic
• More toughness compared to green sic
Abrasive Types for Rice Whitening Application
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Premium range of stones _ Extra Long Life
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Major Benefits of Extra Long Life Rollers
● Longer life of abrasive rollers
●
Saving in rice broken by 0.5 to 1% compared to regular stone
● Excellent shining & whiteness on rice
● Output quality will be better due to fast cutting action
● Readily available in popular sizes/grading
R t
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Report
Parameter Rice Master Extra Long Life
Batch size (input paddy), In KG 18750 18Time taken/ batch, In Hour 7
Rice Broken, In KG 645
Rice Broken % 3.44 3
Current Consumption (Amp) 17
Water consumption at silky 1st pass (In LPH) 40
Water consumption at silky 1st pass (In LPH) 60
Polishing (*) Good Better
Temperature (degree centigrade) 55
Bran sticking on screen (cake formation) every batch once in two Bat
Name of Customer : A Doraisamy Modern Rice Mill, Salem
Whinener m/c : Buhler, DSRF
No of pass : 3 passes (Green 16 grit for 1st & 2nd pass, Green 24 grit for 3rd pass)
Type of paddy : Single Boil
(*) – Kettmeter was not available at customer end / by visual observation
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Conventional Cone Casting
Before Pasting Emery
Conventional Cone Casting
After Pasting Emery
Emery Pasted Abrasive Stones
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Sterling Abrasives Limited
• Emery pasting
Dependant on human
skill• Time consuming
• If not done properly,
may cause problem
during working & may
result in production
loss• Limited shelf life
• Different practice for
selecting emery grit &
type
• 100 % Silicon Carbide (SiC) abrasiv
• grain
• Grit Combination as per requiremen• Unique bonding system
• Different stages in manufacturing i.e
• mixing / drying / Firing / quality
• checking / Dressing / Inspection /
• Packing
• Fired at High degree temperature fo
• Ten days• Uniform hardness through the
• surface
• Manufacturing period is 4-5 weeks
• Same quality as per whitener stone
Manufacturing Of Abrasive ConeEmery Pasted Cone
Variety
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Sterling Abrasives Limited
Abrasive Stone + Metal Assembly
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Sterling Abrasives Limited
• Rice broken % is reduced – at-least 1% saving in boil rice
• Higher output rate in ton/hour (10 to 15% extra)
• Higher life of stone (at-least 3 times compared to emery pastedstones)
• Consumption of rubber brake is reduced by 25 to 30%
• Whitening / Shining of rice is better
• Saving in electricity cost (due to more output & less AMP)
• Easy to mount on assembly
• Compact & uniform structure due to vitrified bond – dependency
on skilled labour for setting up cone can be avoided
Advantages of Cone Whitener Stones
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4 pcs design 2 pcs design Single pc desig
Flange type
assembly
Different design of cone polisher stones
Regular
assembly
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Cone Whitener Stones Photo
Supplying to majority of Cone Polisher Machine Manufacturers in Indi
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Long type abrasive stones for Vietnam market
Short type abrasive stones for Thailand Market
Stones for Cone Polisher Machine
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South East Asia Cones
Pieces Rice Mill,
Philippines (30” and
28”)
Lamico Design,
Vietnam Model
Vit ifi d Chi T R ll d l
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Advantages:
1. Better rice whitening and shining2. Rice broken will be minimized
3. Reduction in power consumption
4. Longer life of abrasives stone
5. Higher rice output per hour
6. No shelf life
Vitrified Chinese Type Rollers - models
TS 25B SM 18E Jet Polisher / NF 15
Sterling Sterling SterlingConventional CConventional CCon
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Advantages:
1. Pearl removal process become faster 2. Saving in pulse breakage by 0.5 to 1%
3. Life of stone will be 3 to 4 times higher
4. Saving in Electricity cost
Existing hand made roller Sterling’s Vitrified Bonded Stones
Vitrified Dal Polishing Stones
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Popular Variety of stones are available in ready stock (Approx. two month requiremen
agro season)
Availability in ready stock
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Thanks