Ossido HQ is a product composed of high-purity micronised quicklime. It is produced by grinding quicklime with grain size 3‒9 and 8‒20 mm, the noblest grain sizes. Grinding is carried out until the material is micronised. In this way, Fassa is able to obtain micronised calcium oxide with high reactivity and purity. This product is especially appreciated in the chemical industry.
A line of low-carbon products with the following characteristics:
High CaO content available
Low CO2 content
High reactivity due to the soft burning of the limestone and resulting high specific surface area and porosity
Low impurity content
Ideal for low-carbon steel and stainless steel production
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
3-9 mm
8-20 mm
Fassasoil
FASSASOIL is a line of products dedicated to soil stabilisation. Fassa lime is particularly appreciated in this sector because of its high reactivity, which speeds up the action of lime in the soil and enables the desired resistances to be achieved using a lower quantity of the product compared to traditional lime. Leveraging on its vast experience as a supplier in this sector, Fassa has optimised the grain size of FASSASOIL products to ensure the best user experience for the end customer.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
0-1 mm
0-3 mm
Agricalce Calce Viva
Agricalce is the line of products dedicated to agriculture. Available in different grain sizes and magnesium oxide content, these products are ideal for liming soil.
Products in the Agricalce line offer the following characteristics:
Correction and neutralisation of soil acidity
Improvement of soil structure
Cost savings on chemical fertilisers
Higher productivity.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
0-1 mm
3-9 mm
Flow lime
A line of finely-ground products that offer the following characteristics:
Improving the performance of the lime itself: lime is injected directly into the slag and the small size of the individual grains ensures the product dissolves more quickly
Increasing safety and improving the environmental conditions through reduced production of dust
Higher fluidity through the use of fluidising agents and an optimised grain size curve for this purpose.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
0-1 mm
0-1 mm in mixtures of 15-20-25% MgO
Agricalce Calce Dolomitica
Agricalce is the line of products dedicated to agriculture. Available in different grain sizes and magnesium oxide content, these products are ideal for liming soil and are the ideal treatment for agriculture.
In fact, like calcium, magnesium also plays a key role in maintaining soil structure and a crucial role in transporting carbohydrates in plants: only an adequate supply of magnesium enables the substances produced through photosynthesis to be transported to the growth organs. It should also be emphasised how easily magnesium is leached (removed by being carried to the deeper layers by water), especially in certain soils. After a soil analysis, it is recommended that magnesium be added to the soil.
Products in the Agricalce line offer the following characteristics:
Correction and neutralisation of soil acidity
Improvement of soil structure
Cost savings on chemical fertilisers
Higher productivity.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
0-3 mm
3-9 mm
Flow lime 40%
FLOW LIME 40% (dolomitic), utilised in the steel industry, is used to extend the durability of the refractories, when the extremely fast action of quicklime is not required. Refractories are rich in Mg and the slag can be very aggressive for them. If the slag is already Mg-rich, the addition of lime makes is less aggressive for refractories.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
0-1 mm
Oximud
OXMUD is the line of products composed of dolomitic lime with reduced grain size. They are particularly suitable in sludge treatment sector: the high percentage of magnesium oxide guarantees long-lasting reactivity. The grain size curve is designed to optimise the dispersion of the product in the matrix to be treated.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
Oximud F 0-1 mm
Oximud G 0-3 mm
Fassasorb
FASSASORB is a line of hydrated lime products, the alkaline substance that is most recommended for the de-acidification of exhaust gas produced by combustion processes (such as, for example, waste incineration, biomass combustion and other industrial processes).
The soft burning of the limestone and its subsequent hydration process give FASSASORB a high specific surface area and a pore volume that is suitable for neutralising exhaust gas and reducing acidic pollutants, such as hydrochloric acid and hydrofluoric acid, and acidifying substances such as sulphur oxide.
These characteristics enable a high degree of pollutant reduction thanks to the high reaction efficiency of the lime hydrated with hydrogen chloride.
Grain size
Supplied in
Silo truck
Tipping truck
Big bags
Bags
Micronised product
Steel industry
Over the years, developments in the steel industry have prompted demand for increasingly high-performance raw materials. Thanks to its close ties with various Italian players in this sector, Fassa Bortolo has been able to develop a range of products that meet all their needs.
Over the last decades, the evolution and changes to production processes in the steel industry are reflected in the development of products as well as in the way lime is used.
The company’s experience has resulted in the wide range of products designed for all stages of steel production: EAF furnace, ladle furnace (LF-AOD-VOD) and special applications.
Over the years, in response to specific requests from our customers, we have developed special products such as the low carbon (ELC) and high reactivity product line, properties that are difficult to find in the same product, and the line of finely ground products – Flow Lime – suitable for pneumatic transport thanks to their particular grain size curve and the use of fluidisers that prevent agglomeration. To increase the durability of refractories, we offer dolomitic lime with a high MgO content, or mixtures customised to the content required by the customer.
Fassa Bortolo lime products for the steel industry:
Ecology
A system that guarantees the highest effectiveness at a relatively low cost.
Flue gas treatment
Hydrated lime is the main reagent in exhaust gas abatement processes in civil waste-to-energy plants, industrial plants and thermoelectric power stations. In this area, Fassa Bortolo has developed specific products for the individual needs of different plants, depending on the type of pollutants to be abated.
Water treatment
Water neutralisation, removal of impurities (such as sulphates, phosphates and fluorides) as well as the reduction of heavy metals can be achieved highly effectively in both civil and industrial plants with the specific use of hydrated lime and calcium oxide products.
Sludge/waste treatment
Lime is also used in remediation or inertisation processes through the conditioning and sanitation of a wide range of waste materials. Thanks to these processes, industrial sludge, sewage sludge and dredging sludge can be recovered successfully.
Fassa Bortolo lime products for the ecology sector:
Chemical industry
Since lime is extremely multi-purpose in nature, it has always been used widely in the chemical industry as a basifying agent. It can also be used as a carrier of Ca++ ions to create calcium based salts and compounds, which in turn are the raw materials for other products. In this case, it is essential to use a high-purity lime to avoid introducing impurities into products that will be used as raw materials in future processes.
Another common use of lime is to raise the pH level. The main advantage in this case is the speed of the reaction combined with the low price of the reagent. This pH variation can be used to precipitate metals or compounds.
Other important applications include basic hydrolysis, the production of calcium acetate and many others. With appropriate modifications to the production processes, lime can be used as a substitute for limestone: thus the CO2 emissions into the atmosphere as a result of process reactions can be reduced significantly. Moreover, the storage space for lime is half that of limestone, even though they introduce the same amount of calcium into the process. This may optimise both storage and logistics.
Quicklime is commonly used as a dehydrating additive on account of its efficient and speedy reactivity in contact with water. This makes it particularly suited to reducing H2O content in one stage of the production process.
Building on its hundred years of experience in lime production and the use of innovative fuels, Fassa Bortolo can produce a broad range of products with these characteristics.
Some examples of applications in which our products are used are:
Production of calcium carbide and other calcium-based compounds
Production of glass and glass fibres
Production of fertilisers
Production of dehydrating additives for the plastics industry
Additive for the tanning industry
Reagent for the recovery and refining of precious metals
Fassa Bortolo lime products for the chemical industry:
Soil stabilisation and road works
Lime thus plays a decisive role in the construction of foundations for roads, railways, airport runways, landfills and artificial channels. Adding lime to clayey and silty soils improves their mechanical characteristics.
Soil stabilisation
Soil stabilisation using lime is a well-established practice involving the addition of calcium oxide, dosed on its own or in combination with cement, to clayey or silty soils to reduce plasticity and enable optimal compaction in a cost-effective way. Treatment using only the dosing of lime is usually carried out on some Group A2 soils and on Group A6 and A7 soils, while the dosing of lime/cement mixtures is carried out on some Group A2 soils and on Group A4, A5 and A6 soils.
Calcium oxide (quicklime) is added to the soil that is being stabilised in a given percentage and it has a twofold advantage: through the hydration process, it absorbs water chemically (up to 1/3 of the weight of the added lime) and, since the hydration reaction is highly exothermic, it will also dry out the soil.
The silica and alumina in clayey soils react with the calcium to form calcium and aluminium hydrates. These reactions are similar to those that occur in cement when it hardens and last for years.
The reactions occur through two distinct processes:
Rapid ion exchange improves the chemical and mechanical characteristics of the soil, thus changing it
Slow lime/soil pozzolanic reactions known as stabilisation/solidification
The soft burning of the limestone carried out by Fassa Bortolo produces lime that has high calcium oxide content, low bulk density and high reactivity, which are optimal characteristics for the soil stabilisation process.
Fassa Bortolo lime products for soil stabilisation:
Opere stradali
The agent widely used to limit stripping of asphalt, i.e. the loss of adhesion between the surface of the aggregate and the bitumen caused by the presence of moisture, is hydrated lime.
One of the effects of hydrated lime is it allows calcium ions to precipitate on the surface of the bituminous concrete, making it more suitable for bitumen. Calcium can accumulate on the surface of the aggregate and can bind with the acids in the bitumen, forming salts that are insoluble in water. Thus, hydrated lime reacts with the silica and alumina in the aggregates forming pozzolanic binders and strengthening the bonds in the mixture.
Experience over the years has shown that adding 1-3% of hydrated lime when preparing bitumen improves resistance to deformation and yields benefits for viscosity at high temperatures, especially early on, improving resistance against cracks and the accumulation of permanent deformations, thus extending its average life and preventing cracking at low temperatures.
FASSA’s hydrated lime is fully compliant with the CL90-S characteristics of the EN 459 standard and ensures durable, high quality paving.
Fassa Bortolo lime products for road works:
Agriculture and animal husbandry
Agriculture
While soil acidification is a natural process that is part of weathering, it can be increased by acid rain and overuse of fertilisers. Each crop requires a particular soil pH for optimal growth. While some crops prefer acidic soils, most need soil that is not too acidic, such as barley, wheat, potatoes, alfalfa, maize, rice, apples and walnuts.
One of the most commonly used minerals for liming and soil disinfection is quicklime (or hydrated lime). Calcium Carbonate Equivalence (CCE) measures the capacity of a calcifying material to neutralise acids compared to pure calcium carbonate (CCE of 100%). For a given weight, quicklime has a CCE (Calcium Carbonate Equivalence) of 179 and is therefore classified as a highly efficient liming material.
The main benefits of spreading lime in the soil are:
Physical benefits
Can be used as a soil conditioner Lime gives soil a better structure that enables a greater flow of air and water.
Chemical benefits
Can be used as a soil corrective Spreading lime acts as source of calcium (and magnesium in the case of dolomitic lime) and raises soil pH: nutrient solubility is improved compared to soils with an acid pH. Increased pH leads to a reduction of aluminium and manganese in soluble form, increased availability of nutrients such as nitrogen, phosphorus, potassium and the insolubilisation of certain toxic substances such as heavy metals.
Biological benefits
Can be used as a fertiliser The capacity of the soil to host a wide range of organisms such as bacteria, worms, etc. is improved. This affects the nitrogen transformation processes in the soil and the mineralisation of the organic matter present.
Fassa Bortolo lime products for agriculture:
Animal husbandry
Calce Idrata Fiore, produced by hydrating high-purity quicklime, is recognised as the ideal product for disinfection and for slowing down the multiplication of pathogens effectively, which is why it is used in animal husbandry.
Using hydrated lime to disinfect stables is a well-established process that has been used since antiquity. The method involves spreading the powered product in transit areas rather than in the preparation and maintenance of bedding and stalls.
The high alkalinity produced (pH 12) prevents the invasion of pathogens brought in by people, wild animals, machines, etc. and acts as a barrier against bacteria and viruses. Escherichia coli and salmonella are inactivated in 24 and 2 hours respectively.
The advantage compared to other chemicals is that the product can be spread on the soil without any significant effects on the microflora because it reacts with the CO2 in the air, forming calcium carbonate.
Fassa Bortolo lime products for animal husbandry:
Building
This is an area in which Fassa Bortolo guarantees the highest quality, with a complete range of products for any building work, from new constructions to restorations and renovations: pure lime-based mortars, mortars for facing brick walls, bio-mortars for the restoration sector, etc.
Today, most formulations of Fassa products use lime in their compounds and an excellent lime putty and fine mortar, both for interiors and for the market. The types of lime used in the building industry range from quicklime in pieces, suitable for the production of hydrated lime putty, excellent for the production of premixed products, to oxide with a high calcium oxide content, particularly suitable for the production of cellular concrete.
With the experience it has developed, Fassa has become the leading producer of lime products for the building industry:
Lime is one of those usually invisible products that have a profound impact on our day-to-day life. It is used in many industries such as the steel industry, construction, ecology, agriculture, through to the chemical industry and road works, and in many environmental applications.
Lime is renowned to be a highly ductile material and this is why it is suitable for numerous applications in different sectors.
Increasing public awareness of environmental issues has led companies operating in a variety of sectors to regard lime as a natural and highly environmentally-compatible product.
Lime is indeed the ideal environmentally-friendly additive used as a reagent in treating industrial and civil wastewater, stabilising and disinfecting sludge, and cleaning exhaust gas from incinerators and thermoelectric power stations.
Products
Quicklime
The firing method developed by Fassa Srl, together with use of biomass fuel, ensures the limestone is soft burned. This type of firing produces lime with high reactivity combined with low CO2 content.
The numerous controls carried out in the Fassa quarries guarantees a limestone with consistent chemical and physical characteristics, free of impurities and, consequently, high quality finished products.
The high magnesium oxide content of Fassa’s dolomitic lime makes it ideal for increasing its presence in the steel bath. It reduces wear of the refractory bricks, extending their operational life and reducing costs. Fassa’s dolomitic lime is also particularly appreciated for its exceptional purity in the chemical industry.
Hydrated lime is produced from hydrating powdered quicklime. The high purity of Fassa’s quicklime ensures rapid and complete hydration of the calcium oxide. The hydration reaction means that the grain size of the material is reduced and the surface area of the single granules is greatly increased.
This characteristic makes the hydrated lime ideal for a wide range of applications: from exhaust gas treatment, water treatment, to use in construction. Fassa’s hydrated lime product range is high performing in any application thanks to its purity and its chemical-physical characteristics.
The calcitic lime and dolomitic lime mixtures, produced exclusively in the Montichiari (Brescia) plant, have the advantage of combining the benefits of both products, optimising storage volumes and logistics. The final magnesium oxide content can be customised to the individual customer’s requirements.
Not everyone knows, for instance, that lime is an essential raw material in the production of steel. Thanks to its specific chemical properties, lime plays a decisive role by removing impurities such as silica, sulphur and phosphorus.
Ecology
Lime is a quintessential natural material and its contribution to environmental protection is key: as a matter of fact, it is used for treating wastewater and sewage sludge, as well as for abating polluting exhaust gas from industrial plants, incinerators and thermoelectric power stations.
Chemical industry
Lime is one of the most important raw materials in the vast world of chemistry. As a matter of fact, most producers of calcium salts use it as a raw material. Lime is also used to produce technical gases for industrial use, animal feed and for sophisticated industrial applications such as the production of high-performance lubricants, anti-friction products (stearates) and many others.
Soil stabilisation and road works
The many properties of lime include soil consolidation and stabilisation, a technique that is widely used by numerous construction companies in Italy and abroad.
Agriculture and animal husbandry
Adding lime to soil for growing crops, commonly known by the technical term ‘liming’, is a practice that has been widely used in agriculture for millennia. As a matter of fact, lime corrects and neutralises the acidity in the soil, improves its physical structure, aids water absorption and root penetration thus increasing crop yields, regulates fermentation in composting and is an excellent disinfectant that has a low environmental impact.
Building
Building is undoubtedly the oldest field of application of lime: the Romans used lime mortar to build their empire. Today, more than ever, lime is a fundamental component of masonry mortars and premixed plasters.
In line with company’s green vision, the Environmental Product Declaration (EPD) has also been prepared for the lime, reporting environmental impacts in a credible, transparent and comparable way, based on the Life Cycle Assessment (LCA).
