Hydrated Lime - Slaked Lime
Hydrated Lime, is a dry fine , white powder with chemical formula Ca(OH)2. The Hydrated Lime manufactured in our state-of-art plant is free flowing fine powder, without any grits and impurities.
| Grades | A | B | C | D | E | F |
| % of Available Lime as Ca(OH)2 | +90 | +85 | +80 | +75 | +70 | +65 |
| % of Available Lime as | +68 | +64 | +60 | +56 | +52 | +49 |
| % Acid Insolubles (Max.) | 1.0 | 1.5 | 3.0 | 4.0 | 4.5 | 6.0 |
| % Iron & Alumina | As Fe <0.035 |
As Fe <0.040 |
As Fe <0.050 |
As Fe <0.055 |
As Fe <0.060 |
As Fe <0.060 |
| % Magnesia as MgO | 1 | 1 | 1.25 | 1.5 | 2 | 2 |
| Mesh (BSS) | 250 | 200 | 200 | 150 | 150 | 150 |
| Packing | Laminated PP/HDPE Bag & Jumbo Bag |
PP/HDPE & Jumbo Bag |
PP/HDPE Bag | |||
This grade of Hydrated Lime is tailor-made to cater to the needs of customers from industries such as Putty, Soap and Chemicals. Sigma Special lime offered by us at a very competitive price leads to high yield products.
For more details on the above special grades, please click on the respective grade.
Zinc Sulphate (Solution)
We are one of the well known name for Zinc Sulphate Supplier in Rajasthan, Importers and Distributors in India due it's superior quality and result oriented .
Zinc Sulphate is used as raw material for production of lithopone. It is also used in Synthetic Fiber Industry, Zinc Plating, Pesticides. It is mainly used in trace element Fertilizer and Feed Additive etc.
Zinc sulphate mono hydrate (Zinc sulphate 33% Zn Feed & Agriculture) is a colorless crystalline, water-soluble chemical compound and chemical fertilizers. These are prepared by reacting zinc with light aqueous sulfuric acid.
It is properly packed in HDPE bags with liner inside so that its purity is maintained till the very end.
| Form | Liquid / Powder |
| Use | Industrial |
| Components | Contents |
| ZnSO4.7H2O | 99 % |
| Zinc (Zn) | 21 % |
| Lead (Pb) | 0.003 % |
| Copper (Cu) | 0.1 % |
| Magnesium (Mg) | 0.5 % |
| pH | > 4.0 |
| Pathogens | Nil |
| Sulphur (S) | 10 % |
| Heavy Metals | FCO Complaint |
| Colour | White |
| State | White Crystals |
Quick Lime Lumps manufactured from traditional kilns
Calcined Lime / Unslaked Lime/ Burnt Lime
Quick Lime Lumps, also known as 'Burnt Lime' or 'Calcined Lime' are formed by calcining Calcium Carbonate ( Lime Stone). The Products offered at Sigma are manufactured from Jodhpur, Rajasthan limestone ,procesed using best quality chemical and are checked on various parameters in order to offer flawless supply at the users end.
| Specifications | Manufactured From Traditional Kilns |
| % CaO | 85 + 2 |
| % MgO | 2. 0 – 2.50 (max.) |
| % Silica as SiO2 | 1.50 to 2.0 (max.) |
| % R2O3 | 0.6 (max.) |
| % L.O.I. | 5 - 7 (max.) |
| Reactivity 4 NHCL | 310 -340 ml |
| Sizes | 0 -3 mm 10-100 mm 20-60 mm |
| Packing | Once Used Jumbo Bag / Laminated PP/ HDPE Bag |
Quick Lime Powder
Calcined Lime/ Unslaked Lime/ Burnt Lime Powder
Quick Lime Powder offered by us is rigorously checked on various parameters by quality experts and packed with high precision so as to meet the industry quality standards.
| Specifications | Gold | Silver (For AAC Blocks) |
| % of Available CaO | 82 -85 | 80 + 2 |
| % Total CaO | 88% min. | 85% min. |
| % Acid Insoluble as SiO2 | 1.5 (Max.) | 2.0 (Max.) |
| % MgO | 2.0 (Max.) | 2.5 (Max.) |
| % R2O3 | 0. 5 (Max.) | 0.5 (Max.) |
| Mesh (BSS) | 97-98% passing through 250 mesh | 90-95% passing through 170 mesh |
| Reactivity Time 55°C | 15-20 minutes | 20- 30 minutes |
| Packing | Once used Jumbo Bag/ PP/HDPE bag | |
Limestone
we are engaged in offering quality assured assortment of limestones from Jodhpur, Rajasthan. The limestone we offer is widely demanded among the industries for its safe use. Limestone provided by us is processed exquisitely under the team of skilled professional.
| Specifications | Gold | Silver (For AAC Blocks) |
| % of Available CaO | 82 -85 | 80 + 2 |
| % Total CaO | 88% min. | 85% min. |
| % Acid Insoluble as SiO2 | 1.5 (Max.) | 2.0 (Max.) |
| % MgO | 2.0 (Max.) | 2.5 (Max.) |
| % R2O3 | 0. 5 (Max.) | 0.5 (Max.) |
| Mesh (BSS) | 97-98% passing through 250 mesh | 90-95% passing through 170 mesh |
| Reactivity Time 55°C | 15-20 minutes | 20- 30 minutes |
| Packing | Once used Jumbo Bag/ PP/HDPE bag | |
Dolomite
Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO3)2. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Limestone that contains some dolomite is known as dolomitic limestone.
Dolomite is rarely found in modern sedimentary environments, but dolostones are very common in the rock record. They can be geographically extensive and hundreds to thousands of feet thick. Most rocks that are rich in dolomite were originally deposited as calcium carbonate muds that were postdepositionally altered by magnesium-rich pore water to form dolomite.
Dolomite is also a common mineral in hydrothermal veins. There it is often associated with barite, fluorite, pyrite, chalcopyrite, galena, or sphalerite. In these veins it often occurs as rhombohedral crystals which sometimes have curved faces.
| Chemical Classification | Carbonate |
| Color | Colorless, white, pink, green, gray, brown, black |
| Streak | White |
| Luster | Vitreous, pearly |
| Diaphaneity | Transparent to translucent |
| Cleavage | Perfect, rhombohedral, three directions |
| Mohs Hardness | 3.5 to 4 |
| Specific Gravity | 2.8 to 2.9 |
| Diagnostic Properties | Rhombohedral cleavage, powdered form effervesces weakly in dilute HCl, hardness |
| Chemical Composition | CaMg(CO3)2 |
| Crystal System | Hexagonal |
| Uses | Construction aggregate, cement manufacture, dimension stone, calcined to produce lime, sometimes an oil and gas reservoir, a source of magnesia for the chemical industry, agricultural soil treatments, metallurgical flux |
Calcined Dolomite
We are a promient Manufacturer and Supplier of Calcined Dolomite. Dolomite stone is Heated with Steam Coal which comes in form of Calcined Dolomite after this process. It is also known as Dead Burned Dolomite. We have our Own mines of Dolomite, which helps to maintain best quality Calcined dolomite which is high in MgO content. Further, we offer Calcined Dolomite at affordable price.
| Type | Calcined Dolomite |
| Use | Industrial |
| Style | Calcined |
| Form | Solid |
| Features | Durable, Hard Structure, Lite Weight |
| Cleavage | Perfect, rhombohedral, three directions |
| Purity | 99% |
| MgO | 35% |
| CaO | 55% |
| SO3 | 0%(100% Sulphur Free) |
| LOI | 4% Max |
| SiO2 | 2-3% |
| Size | 20-80mm Or As Required |
| CaO+MgO | 90% Minimum |
Rock Phosphate Imported & Indigenous
Being the leader in our domain we are able to cater the premium quality of Rock Phosphate for the clients. As far as the construction part is concerned Phosphorite, phosphate rock or rock phosphate is a non-detrital sedimentary rock which contains high amounts of phosphate bearing minerals. When it comes to the ratio part the phosphate content of phosphorite is at least 20% which is a large enrichment over the typical sedimentary rock content of less than 0. 2%. These are ideally used as fertilizer in acidic soil and this application is dependent on the structure and chemical composition of the rock. For the quality assurances our quality analyst makes sure that the entire ranges are tested on different parameters to assess the suitability. Our emphasis is on Mineralogical tests. The entire ranges are packed in our warehouse and delivered to the clients within the stipulated time frame. Our priorities are client satisfaction.
| Type | Rock Phosphate |
| Use | Industrial |
| Grade | 22,24,30 |
| Color | Brown |
| Release Type | Slow |
| State | Powder |