Micronized Gypsum Powder — Ronak by Razi Gypsum
تماس بگیرید
Ronak Micronized Gypsum
| Attribute | Value |
|---|---|
| Product name | Ronak Micronized Gypsum |
| Manufacturer | Razi Gypsum Factory, Semnan, Iran |
| Material type | Micronized calcium sulfate hemihydrate |
| Fineness | Mesh 100–200 (approx. 75–150 microns) |
| Purity | 98%+ |
| Packaging | 25/30 kg bags; 1–2 ton jumbo bags |
| Primary use | Final-coat plastering, mold-making, interior decoration |
| Export-ready | Yes |
Suitable for whitening and final coating of walls and ceilings. Ideal for industries related to plaster mold-making and interior decoration. Used in luxury construction projects that require a perfectly smooth surface.
Description
Ronak plaster is one of the top products of Semnan Razi Gypsum Company, produced using the advanced separator system. Despite the similarity between the micronized plaster production process and ordinary plaster, the use of this modern technology results in a product with an extremely fine texture, high uniformity, and superior quality. This makes Ronak plaster ideal for specialized applications, final surface finishing, and use across a variety of industries.
One of the most important advantages of Ronak plaster is the ability to adjust the initial setting time based on customer needs, which increases the flexibility of this product for construction and industrial projects.
Featured Characteristics of Ronak Gypsum
- Extremely fine and uniform granulation — produced in meshes of 100, 150, and 200
- High whiteness and unmatched purity — suitable for final finishing and a smooth surface
- Superior adhesion and high strength — reduces cracking and increases durability
- Adjustable initial setting time — customizable based on customer requirements
- Suitable for domestic and export use — meets international standards
Applications
- Suitable for whitening and final coating of walls and ceilings
- Ideal for industries related to plaster mold-making and interior decoration
- Used in luxury construction projects that require a perfectly smooth surface
Applications by Industry
| Industry | Specific Use |
|---|---|
| Residential & commercial construction | Final-coat wall/ceiling finishing, surface prep for paint and wallpaper |
| Decorative & artistic plasterwork | Mold-making, cornices, decorative ceiling and wall elements |
| Industrial manufacturing | Raw material for gypsum board, tile adhesive, construction putty |
| Restoration | Repair and renovation of historic or aged plaster surfaces |
Packing and Weight
Supplied in 25, 30, and 40 kg bags made of polypropylene and AD*STAR material to maintain quality and increase durability during transport and storage.
Export Packaging Options
For export orders and full-container shipments, Ronak plaster is also available in jumbo bags of 1 ton, 1.5 tons, and 2 tons, in addition to the standard 25/30/40 kg bags. Minimum order quantity varies by packaging type and destination port — contact our export sales team for a quote tailored to your shipment.
Ronak gypsum is a professional choice for those looking for superior quality and performance.
For International Buyers
A Certificate of Analysis (CoA) and pre-shipment samples can be provided on request. Contact our export sales team for FOB/CFR pricing and export documentation support.
What Is Ronak Micronized Gypsum?
Ronak Micronized Gypsum is a finely-milled calcium sulfate hemihydrate (CaSO₄·½H₂O) — the same mineral compound commonly known as Plaster of Paris — produced by Razi Gypsum Factory in Semnan, Iran, using industrial air-separator technology to achieve a controlled particle size of mesh 100 to 200.
Chemical & Physical Specifications
| Property | Value |
| Chemical formula | CaSO₄·½H₂O (Calcium Sulfate Hemihydrate) |
| Molecular weight | 145.15 g/mol |
| Appearance | Fine white powder |
| Purity (CaSO₄) | 98%+ |
| Fineness | Mesh 100–200 (approx. 75–150 microns) |
| Whiteness | 90%+ |
| Density | approx. 2.6–2.8 g/cm³ |
| Solubility in water | Low, approx. 2 g/L at 20°C |
| Decomposition point | approx. 163°C |
| Initial setting time | 8–15 minutes (customizable on request) |
| Final setting time | 20–30 minutes |
| Water-to-stucco ratio | 70–75% |
| Compressive strength | 15–17 N/mm² |
| Flexural strength | 5–6 N/mm² |
| Safety classification | Generally classified as non-hazardous per standard GHS references |
| Shelf life | Up to 6 months in dry storage conditions |
Mesh-to-Micron Reference Table
| Mesh Size | Particle Size (microns) |
|---|---|
| Mesh 100 | approx. 150 microns |
| Mesh 150 | approx. 106 microns |
| Mesh 200 | approx. 75 microns |
Comparison with Standard-Grade Gypsum
| Property | Ronak Micronized Gypsum | Standard-Grade Gypsum |
|---|---|---|
| Purity | 98%+ | Below 90% |
| Packaging | Moisture-resistant, double-layer | Standard single-layer |
| Shelf life | 6+ months | Under 3 months |
| Setting time | Adjustable on request | Fixed, non-adjustable |
Frequently Asked Questions
[NEW] What is Ronak Micronized Gypsum used for? Ronak Micronized Gypsum is used for final-coat wall and ceiling plastering, decorative mold-making, interior decoration, and as a raw material in gypsum board and tile-adhesive manufacturing.
What is the difference between micronized gypsum and regular gypsum? Micronized gypsum has a much finer, more uniform particle size (mesh 100–200) than regular construction gypsum, resulting in higher whiteness, better adhesion, and a smoother final surface — making it suitable for paint, tile adhesive, fine plasterwork, and industrial applications, while regular gypsum is used for general-purpose plastering.
What is the setting time of Ronak Micronized Gypsum? Initial setting time is typically 8–15 minutes, with final setting at 20–30 minutes; this can be customized on request for specific project or industrial needs.
Is Ronak Micronized Gypsum suitable for humid environments? Standard micronized gypsum is intended for interior, non-humid applications. For bathrooms, kitchens, or humid climates, a moisture-resistant additive-enhanced gypsum product is recommended instead.
How much gypsum is needed per square meter? On average, approximately 7–9 kg of micronized gypsum is used per square meter for a finishing layer of about 1 cm thickness.
What is the minimum order quantity (MOQ) for export? MOQ depends on the destination port and packaging format (bagged vs. jumbo bag). Contact our export sales team for a quote tailored to your shipment size.
Can you provide a Certificate of Analysis (CoA) before shipment? Yes, a certificate of analysis covering purity, particle size, and setting time is provided for export orders, and pre-shipment samples can be arranged on request.
Is Ronak Micronized Gypsum safe to handle? Calcium sulfate hemihydrate is generally classified as non-hazardous under standard chemical safety references. Basic precautions (such as a dust mask in poorly ventilated areas) are recommended when handling any fine powder.
| Value | Until | Property | No |
| 7-9 | Min | Initial capture time | 1 |
| 18-23 | Min | Secondary setting time | 2 |
| 4.5-5.5 | % | Crystal water | 3 |
| 2.8< | n/mm2 | 2-hour bending strength | 4 |
| 3.8< | Min | 72-hour flexural strength | 5 |
| 200 | micron | Granulation | 6 |
| 2:30 | min | Time to mix water and plaster | 7 |
| 100 | Gr | amount of water | 8 |
| 125-140 | Gr | The amount of plaster | 9 |
| 35< | % | water absorption | 10 |
| 93< | % | Whiteness percentage | 11 |
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