mk

Mechanical

Joined

Feb 4,

1,490

Location

US

Since the posting is about the tank material & fabrication and the waster treatment process, may consider to post it in the Civil/Environ Eng'r/Waste Disposal & Treatment forum.

Good luck. Upvote 0 Downvote

EdStainless

Materials

Joined

May 20,

16,411

Location

Waukesha WI USA

At one time glass lined residential waterheater tanks were common in the US (made by AO Smith).
These were in the 30-60 gal (120-240 liter) range.
I would presume that such tanks are still generally available.


= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube Upvote 0 Downvote

MJCronin

Mechanical

Joined

Apr 9,

5,102

Location

US

If the tanks are low pressure, and I assume low temperature, consider thin walled stainless steel or carbon steel with a premium epoxy coating.

"Glass lined" tanks and pressure vessels are useful where temperature will repeatedly go up and down (hot water heaters) or where there is extremely corrosive contents. These tanks were made by AO Smith (and others) and are expensive and fragile.

I believe that this would be expensive overkill for your Indian food waste ....

What is the volume of your tank and what is the maximum operating temperature and pressure ?

What else have you not you told us ?

MJCronin
Sr. Process Engineer
Upvote 0 Downvote

Dhurjati Sen

Materials

Joined

Dec 14,

1,010

Location

IN

Dear vij36,

If you go for glass lined tanks, ensure those are manufactured and tested as per Shell DEP 30.48.70.30-Gen. GLASS-LINED STEEL PROCESS EQUIPMENT.

Regards.

DHURJATI SEN

Upvote 0 Downvote

vij36

Electrical

Joined

Dec 27,

134

Location

IN

Hi Sen,

I have a sample with the below details:

Enamel thickness 150 micron
Steel thickness 3.2 mm
Steel tensile strength 700 newton/ Square mm

Will the Salt spry testing(ASTM B 117)is sufficient to test the corrosion.

Please let me know. Upvote 0 Downvote

btrueblood

Mechanical

Joined

May 26,

10,046

Location

US

"Will the Salt spry testing(ASTM B 117)is sufficient to test the corrosion."

How would you inspect the interior after salt spray testing? I'm assuming this is a closed vessel. You may want to look at electrical (holiday) testing instead. Upvote 0 Downvote

vij36

Electrical

Joined

Dec 27,

134

Location

IN

This is a open plate of dimensions 15 cm x 20 cm.

By visually can we identify whether the test has been passed or not ?

We will do holiday testing on tank once it is ready
Upvote 0 Downvote

TugboatEng

Marine/Ocean

Joined

Nov 1,

12,214

Location

US

Perhaps by glass lined tank you are thinking of a fiberglass lined tank? Fiberglass can be adhered directly to the tank surface for much better protection than a painted on coating. A quick search also turned up a company that specializes in this.

Upvote 0 Downvote

Glass Fused To Steel Bolted Storage Tanks  – Never Need Painting

Glass-fused-to-steel (porcelain enamel) is a single source strong, integrated porcelain enamel and steel material fused together at over ° F, creating a hard inert, inorganic coating that NEVER needs painting.  CST’s glass-fused-to-steel is the premium technology in the tank market.  The interior of all glass-fused-to-steel tanks feature VITRIUM™ coating technology enhanced with titanium dioxide (Ti02) for the toughest glass available. 

zhaoyang contains other products and information you need, so please check it out.

CST’s VITRIUM coating is the world’s leading glass-fused-to-steel process for bolted storage tanks and has been field proven for more than 69 years.  Along with VITRIUM coating, CST now offers EDGECOAT® II, the continuous innovative EDGECOAT technology and the ONLY process in the world that provides optimum glass encapsulation on all (4) sides of the sheet edges.  VITRIUM coating features and benefits include:

• Tough Ti02 glass formulations provides longer life
• White interior is easier to inspect than darker coatings
• Factory certified holiday-free sheets
• Designed for use in both cold and hot climates
• Designed, fabricated, shipped and supported within the USA

EDGECOAT II is a result of CST’s commitment to an ongoing product development and improvement program.  This continuous innovative EDGECOAT technology is the ONLY process in the world that provides optimum glass encapsulation on all (4) four sides of the sheet edges.  CST took the best EDGECOAT technology in the world and made it better with EDGECOAT II.

Following Porcelain Enameling Institute guidelines (PEI-101), EDGECOAT II sheets are mechanically rounded to specific radii that provides maximum glass adhesion to steel.  The combination delivers the maximum corrosion resistance of VITRIUM glass coating with the greatest protection on every sheet.

• Highest quality finish
• Glass is applied on all (4) sides of the sheet offering the greatest protection
• No sharp edges on tank sheets, eliminating safety hazards
• Edges are engineered to ensure optimum radii for each individual gauge of steel providing the maximum and consistent glass edge
• 5 mils of glass encapsulation on every sheet edge

Download Edgecoat II Technical Data Sheet

VITRIUM is our proprietary titanium Dioxide (TiO2) glassing process applied in a 3-coat, 1-fire (3c1f) process procedure. VITRIUM coating is also produced in a 3-coat, 2-fire (3c2f) process primarily when special colors are requested or thicker layers of glass are required.

The CST proprietary VITRIUM glass-fused-to-steel process provides:

• Longer tank life
• Base coat of glass frit containing nickel oxide ensures consistent quality
• Maximum coating effectiveness without requiring excess coating thickness in order to provide the needed durability at competitive pricing
• Unique process technologies and voltage testing on all interior side wall sheets provide a factory certified 100% holiday free surface.

The combination of glass quality and glass thickness provide the assurance that over 69 years of experience and over 100,000 structures successfully installed around the world will continue with each and every new structure installed.

Titanium Dioxide (TiO2)

In CST, formerly Engineered Storage Products, launched an R&D project to develop a process for the direct application of our proprietary Titanium Dioxide (TiO2) Glass.  The result is a totally new, patented “3-coat, 1-fire” (3c1f) process for applying TiO2 Glass.

TiO2 is a very common ingredient used by many coating manufacturers for various reasons:

Contact us to discuss your requirements of Glass-Fused-to-Steel Tank. Our experienced sales team can help you identify the options that best suit your needs.

• • It is considered inert and at high level in porcelain enamel, gives unique properties.
  • In the case of the interior VITRIUM coating, with its higher percentage of TiO2 in the final white layer, allows CST to provide an exceptional enamel surface.
  • During firing, the white layer’s higher viscosity has the effect of controlling bubble structure in addition to making the top TiO2 rich layer harder, more chemical resistant and the bubble structure finer.  This high TiO2 content is unique to AQUASTORE® and provides exceptional properties to fit colder conditions common to the North American market.

As a result of using higher amounts of TiO2 in the final white layer, a unique visual marker on the glass known as “VITRIUM threading” becomes apparent.  This is caused by thicker areas of the top white layer interspersed with thinner areas allowing the underlying bluecoat to show through opaquely.  This immediately identifies the coating as VITRIUM.

Manufacturing Excellence

CST’s DeKalb facility is ISO : quality system certified.  Engineers design tanks for a wide range of standards including AWWA D103 Standard for Bolted Steel Water Storage Tanks, AISC, FM codes and NFPA Standard 22.  Additionally, glass coatings meet ANSI/NSF Standard 61 requirements for indirect additives, making AQUASTORE®, HARVESTORE® and SLURRYSTORE® tanks ideal for liquid, feed, manure storage and digesters processes.  Most importantly, extreme pride is taken in craftsmanship for a tank that endures the test of time.

From the automated manufacturing processes through the stage-by-stage inspection and even down to careful inspection of the glass. Our glass-fused-to-steel quality is the best in the industry.  The best proof of the precision of CST’s manufacturing procedures can be seen in the thousands of tank installations around the world.

Glass-Fused-To-Steel Process

Glass-fused-to-steel is the premium technology in the tank market.  The factory-applied silica glass coating on AQUASTORE, HARVESTORE, SLURRYSTORE and NUTRISTORE tanks forms a hard, inert barrier for both the interior and exterior tank surfaces to guard against weather and corrosion.  Glass-fused-to-steel is impermeable to liquids and vapors, controls undercutting caused by corrosion and offers excellent impact and abrasion resistance.  The color won’t fade or chalk and most graffiti can easily be removed.  It NEVER needs painting!

• • Fabricated sheets are grit blasted to a uniform, near-white surface
  • Proprietary formulations of borosilicate, minerals, water and clays are blended into a sprayable slurry called “slip”
  • After inspection, the slurry is fused to the steel sheets at temperatures above 1,500° F to produce the distinctive glossy Aquastore finish
  • The molten glass reacts with the profiled steel surface to form an inert, inorganic chemical and mechanical bond

VITRIUM Coating Glass Finish

New process technology has resulted in the development of CST’s newest glass innovation – VITRIUM coating.  This coating combines the outstanding chemical and physical resistant properties of Titanium Dioxide (TiO2) saturated glass with a highly engineered ultra-fine glass structure surface to create a high-performance glass-fused-to-steel technology.  VITRIUM coating features and benefits include:

• Tough TiO2 glass formulations provide longer life
• Electrostatic base coat application ensures consistent quality
• Maximum coating effectiveness without requiring increased coating thickness
• Unique process technologies provide factory certified “holiday free” sheets
• Process efficiencies lead to competitive pricing
• Ideal for both cold and hot climates

Color Options

AQUASTORE glass coatings are available in standard cobalt blue or four other premium exterior colors.  Forest green, sky blue, desert tan or white premium colors are available at an additional cost. Inquire for custom colors.

History of Glass-Fused-To-Steel

CST (formerly A.O. Smith) first discovered the methodology of controlling corrosion by fusing glass to steel in the s.  The technology was initially used in the brewing and hot water heater industries.  While other uses for glass-fused-to-steel were explored, the first glass-fused-to-steel tank went into service in as a HARVESTORE silo.  This agricultural use to store feed while retaining quality has been widely used for almost 69 years.

In the s, our Municipal and Industrial Division was formed and we subsequently launched AQUASTORE tanks for water, wastewater and other industrial liquid uses.  Since , more than 100,000 AQUASTORE, HARVESTORE, SLURRYSTORE and NUSTRISTORE glass-fused-to-steel tanks have been installed in over 70 countries around the world.

Are you interested in learning more about GFS Tank? Contact us today to secure an expert consultation!