Steel Pickling and Passivation without strong acid

Clean One-Step Steel Pickling and Descaling
Pickle, Descale, and Poly-phosphate Steel in Clean One-step

Steel Pickling and Passivation is a very important industrial process for steel users, especially for panels, switch gear, transformers and furnaces, long products from like bright bars, wire and rods, bridge building and other structural applications.

Hot rolled steel is used in these applications. The steel has to be pickled or descaled before phosphating and epoxy/aluminium paint coating.

Rass-O’-Nil is a one-step pickling (strong acid replacement) and pre-treatment – poly-phosphate (phosphating or chromating replacement) or passivation that does not produce any waste and has a fast one step process saving time and water.

Rass-O’-Nil® pickles and treats the steel surface and deposits an ultra-fine conductive polymerised metallic phosphate conversion deposit on the metal surface. The treated metal does not have rust and scale, and is ready for painting, powder coating and welding.

Rass-O’-Nil  replaces strong acid pickling, descaling, and sand and shot blasting.

Rass-O’-Nil  is a “strong acid free” replacement of strong acid pickling e.g. hydrochloric or sulphuric acid pickling steel sheet or coil and long products.

Unlike strong acid pickling and sand or shot blasting, Rass-O’-Nil® does not etch the metal surface.

The Rass-O’-Nil treatment process is clean and produces a scale free and rust resistant poly-phosphated surface without the hazardous acids used  for pickling steel. This eliminates hydrogen embrittlement caused by strong acid like hydrochloric or sulphuric acid.

Rass-O’-Nil does not require a protective coat of oil to keep it from corrosion unlike the strong acid pickling or shot blasting process. There is no need for solvent to strip with oil before painting.

Try Rass-O’-Nil today! To place an order or if you have any questions, please use the form below. We’ll be happy to hear from you. 

Save food from Climate Change

Climate change will pose sharp risks to the world’s food supply in coming decades, potentially undermining crop production and driving up prices at a time when the demand for food is expected to soar, scientists have found”,  – The New York Times: “Climate Change Seen Posing Risk to Food Supplies”

Renewable Nitrogen Fertilizer Plantee replaces chemical fertilizers and protects agriculture from global warming:

The manufacture of chemical fertilizer is an energy-intensive process, consuming non-renewable natural gas and releasing greenhouse gases like Carbon Dioxide, Nitrous Oxide and Methane. Nitrogen-based fertilizers are made from ammonia, which consumes five per cent of the natural gas produced globally. This quantity of natural gas amounts to two per cent of the total energy consumed globally.

Plantee biomass fertilizer replaces chemical fertilizers and stops the emission of greenhouse gases emitted during the production of chemical fertilizers.  Plantee biomass fertilizer is a renewable resource and helps reduce global warming.

It may surprise many people but agriculture today, is one of the major causes of pollution. The indiscriminate use of chemical fertilizers has not only resulted in reduced agricultural productivity, but also in pollution of groundwater resources and marine eutrophication.  Urea and DAP fertilizers make soil acidic.

Plantee aids soil pigmentation and restores the soil’s natural appearance discoloured by chemical fertilizer over use. The chemical fertilizer run-off from the fields increases the nutrient levels in lakes and rivers and results in a spurt in algal blooms. These algae may take up all of the oxygen from the water and thus ruin other marine life. Also, leaching of the residual nitrate in groundwater has resulted in nitrate concentrations above the permissible level.

Plantee increases crop durability and yield and can be the answer to world hunger: 

Roy Research and Technology has successfully grown Swarna rice using solely Plantee in Birbhum district of West Bengal, India. This rice was tested and found to have higher starch, carbohydrate and protein content. It also withstood stress situations like flooding and drought.

Plantee protects the plant from bacteria and fungus that cause stem and root rot by building immunity. Warm and wetter weather and flooding increases the spread of fungus and bacteria on plants and crops destroying crop yield.

Plantee produces flowers that stay fresh after cutting much longer and increases the vase life of flowers. Plantee helps the flowering plant bear warmer weather because of climate change.

Rass-O’-Nil® stops corrosion on structural steel

Rass-O’-Nil® is a clean polymerised metallic phosphate enriched nano-deposit (less than five microns) with conductive metal ions to give sacrificial protection (cathodic) against corrosion to structural steel during storage, transhipment and inside concrete mortar.

Rass-O’-Nil is applied one tank flash-dipping with turbulence at room temperature during plant application and brush or spray coating at the job site.

Complex sacrificial protection through conductive mix metal oxide (ion) deposit to the rebar or structural steel’s micro-structure gives excellent protection from corrosion and improves the bond between concrete and steel.

When RASS-O’-NIL enriched conductive metal oxide (ion) is in electrical contact with a metal more noble in the electromotive series such as steel, a galvanic cell is established and electric current will flow when an electrolyte contact develops by metallic couple.

RASS-O’-NIL is low cost per linear foot/ tonnage in comparison with epoxy coated or galvanized reinforcing steel. Rass-O’-Nil Kover Technology was tried at Tata Steel under agreement.

How RASS-O’-NIL corrosion prevention works in concrete:

Corrosion occurs when chloride penetrates through defects in a protective (passivating) oxide layer that is normally found on the reinforcing bars. A soluble complex of iron chloride forms and moves away from the bar and deposits expandable insoluble iron oxide in the concrete.

RASS-O’-NIL treatment cathodicaly blocks the corrosion action of chloride salt by its stabilized passivating layers and repairs the defects that occur in the oxide structure, preventing chloride ions from penetrating to the pure iron.

Rass-O’-Nil’s healing effect in concrete: cross section of rebar in chloride laden concrete showing the condition of natural passive layer and the effect of natural system.

RASS-O’-NIL coated rebar in concrete after one year without rust.

Try Rass-O’-Nil today! To place an order or if you have any questions, please use the form below. We’ll be happy to hear from you. 

Rass-O’-Nil® protects TMT rebars

Cross section of rebar in chloride laden concrete showing the condition of natural passive layer and the effect of natural system.

The backbone of the concrete castings, that is TMT rebars, is strong, there will eventually be problems of spalling and cracking, which will then weaken the whole structure.

Chloride from various sources penetrates to the rebar and the electrochemical process of corrosion starts. The rust expands up to four times its original volume and creates an internal pressure (about 4000 PSI), which severely damages the concrete.

Rass-O’-Nil prevents corrosion on rebar. Corrosion occurs when chloride penetrates through the oxide layer normally found on reinforcing bars. A soluble complex of iron chloride forms moves away, from the bar and deposits expandable insoluble iron oxide in the concrete.

The Rass-O’-Nil treatment chemically blocks the corrosion action of chloride salt by its stabilised passivating layers. It repairs the defects that usually occur in the oxide structure, thus preventing chloride ion from penetrating to the pure iron metal.

The Rass-O’-Nil system improves the bond between the concrete and steel. Compared to epoxy or galvanized coating, Rass-O’-Nil is very cost-efficient.

Try Rass-O’-Nil today! To place an order or if you have any questions, please use the form below. We’ll be happy to hear from you. 


Rass-O’-Nil Steel Pickling and Treatment Technology was tried at Tata Steel

“For several years — Tata Steel’s R&D and Roy Research and Technology made a joint effort towards the optimization of the chemical’s uses and physical testing for plant implementation for the development of the metal surface preparation and pre-treatment technology through lab and plant trial. This metal surface preparation and pre-treatment technology polymerised with a polymorphous character.

For several years — Tata Steel’s R&D invested considerable amounts towards adapting the new technologies and Roy Research and Technology has also invested certain amounts and time in developing these technologies.

After thorough testing at the lab and plant level, these new technologies were well accepted by Tata Steel and Roy Research and Technology. The following are those technologies are the new developments of poly-phosphating and poly-metallic phosphate – Flexo and Galvo Technologies for HR, CR, Galvanneal, and tubes (hereinafter referred to as New Technologies.)”

Excerpt from text of Agreement | Copyright: Roy Research and Technology 2015 |

Recycling waste from oil refinery, steel plant, and tar-sand

Roy Research and Technology has invented a technology to recycle asphalt or coal tar material and solid wastes to produce value added products, and reduce hydrocarbon based products and their emission.

Bitumen as asphalt or coal tar is available as bottom waste from petroleum refinery and steel industries. This novel technology recycles  various solid wastes as filler materials.

Products made from recycling waste:

  1. improving flotation in ship building
  2. light weight insulated and  sandwich panel
  3. insulated solar backing
  4. filler material for hollow structural   section
  5. encapsulation of nuclear waste
  6. building insulation
  7. composite material as bulletproof vest
  8.  sprayable blanketing material for coal powder or mineral powder/stone chips and etc. during freight
  9.  low level nuclear radiation insulation,
  10. encapsulation of nuclear solid waste.
  11. road carpeting and improving river side and ocean side embankment.
  12. low-cost energy conservation system  by utilizing agriculture based reactive product for roofing
  13. void filling like filling of steel tubes, channel to improve structural strength and prevent corrosion (this was tested and certified by Govt. of India’s Ministry of Defense.)

The material absorbs sound excellently, with damping properties.

We have also developed a unique hydrocarbon recovery technology and its conversion to value added product from left over asphaltic tar sand.

Our invention had been patented and published in the countries (USA/Canada/Spain/Mexico/Japan/UK/Italy/   France/Denmark/ Brazil/Germany/India etc.) describes the method of utilizing bitumen such as asphalt / coal tar through eco-friendly technologies.

The method can be adopted either by batch process otherwise continuous process.

These methods also facilitate extraction of leftover hydrocarbon and liquefaction of solid bitumen waste during the process of fusion with hydroxyl fatty oil.

This technology replaces CFC and gives the scope for use of ethanol reactivated eco-friendly blowing agent or cell former.

Roy Research and Technology’s invention under Great Britain publication 2271996 A dated 04.05.1994 describes various solid waste materials as fillers with various properties. Waste metallic fillers, ceramic fillers, various clays fly ash, cinders, and various slag powders.

Various fillers that can be recycled but the technology is in no way confined to them:

  1. Sand, soapstone, steatite, talc and clay.
  2. Fly ash, cinders, various slags, red mud form the aluminium industry) glass frits, calcium and   magnesium sulphates (form paper industry wastes), poly-isocyanate pitch, fertilizer waste, molasses waste, copper mud and phosphate waste (fire retardant).
  3. coconut shell powder, cashew nut shell liquid (CNSL) resins, rice husks, straw powder, wood shavings and charcoal powder.
  4. Gypsum, limestone, calcite, dolomite, magnesite, basalt or granite powder (especially from deep strata like goldmines) and marble dust.