Silica Flour Supplier — 100 to 400 Mesh
Ground natural alpha-quartz for oil-well cementing, refractory, ceramics, coatings and fillers. State mesh, SiO2 purity, Fe2O3 and whiteness on the purchase order.
China supplier summary
Miningsun Group is a China-based silica flour supplier and exporter, operated by Beijing Miningsun Imp And Exp Co., Ltd., offering natural alpha-quartz in 100, 200, 325 and 400 mesh. Each order is specified by SiO2 purity, Fe2O3, whiteness and particle size; current COA, TDS and SDS documents must be confirmed for the selected grade and lot before shipment.
- Standards
- SiO2 99% options with mesh control
- Grades
- 100 / 200 / 325 / 400 mesh quartz powder
- MOQ
- 1 MT trial order; FCL recommended
- Packaging
- 25 kg bags, jumbo bags or palletized bags
- Lead time
- 10-20 days after mesh confirmation
- Trade terms
- FOB · CIF · CFR
Natural crystalline silica flour mesh grades
Miningsun supplies natural crystalline alpha-quartz silica flour, not fused silica. State mesh, SiO2 purity, Fe2O3 and whiteness on the purchase order, and require an SDS with crystalline-silica hazard disclosure.
100 Mesh Silica Flour (D50 approximately 120–150 µm)
SiO2 ≥ 99.0%, Fe2O3 ≤ 0.06% and whiteness ≥ 88. A coarser quartz powder for construction, blasting media, epoxy or mortar filler and general industrial use.
200 Mesh Silica Flour (D50 approximately 60–75 µm)
SiO2 ≥ 99.0%, Fe2O3 ≤ 0.05% and whiteness ≥ 90. Used in paints and coatings, rubber, adhesives and oil-well cementing.
325 Mesh Silica Flour (D50 approximately 35–45 µm)
SiO2 ≥ 99.0%, Fe2O3 ≤ 0.05% and whiteness ≥ 92. The most-requested natural quartz grade for paints, plastics, ceramics, glazes and precision casting facing.
400 Mesh Silica Flour (D50 approximately 20–28 µm)
SiO2 ≥ 99.0%, Fe2O3 ≤ 0.04% and whiteness ≥ 93. An ultra-fine grade for high-end coatings, engineered stone, ceramics and electronics filler.
| Grade | Approx. D50 | Fe2O3 max. | Whiteness | Typical selection |
|---|---|---|---|---|
| 100 mesh | 120–150 µm | 0.06% | ≥ 88 | Construction and general industrial filler |
| 200 mesh | 60–75 µm | 0.05% | ≥ 90 | Coatings, rubber and oil-well cementing |
| 325 mesh | 35–45 µm | 0.05% | ≥ 92 | Ceramics, plastics and precision casting |
| 400 mesh | 20–28 µm | 0.04% | ≥ 93 | Fine coatings and engineered materials |
Where buyers use Silica Flour
Oil well cementing, refractory, ceramics and industrial fillers.
Oil-well cementing
Mesh-controlled silica for thermal stability in cement systems.
Refractory materials
Quartz filler for castables and high-temperature formulations.
Ceramics & glazes
Purity and particle-size control for fired products.
Coatings & fillers
Fine mineral filler for paints, polymers and engineered materials.
Packaging, logistics and documents
Confirm the grade, quantity, destination and required document set before comparing delivered prices.
Supply details
- Packaging
- 25 kg bags, jumbo bags or palletized bags
- MOQ
- 1 MT trial order; FCL recommended
- Loading
- FOB Tianjin, Qingdao or Shanghai
- Lead time
- 10-20 days after mesh confirmation
- Incoterms
- FOB · CIF · CFR
Quality documents
0 public PDFsNo public COA, TDS or SDS is attached. Request current purity, particle-size and crystalline-silica safety documents for the confirmed mesh and lot.
No public PDF in the current product folder; TDS/COA can be requested
Request COA / TDS / MSDS →Buyer questions
Why is the TDS not shown?
The current folder does not include a PDF TDS, so it is not published yet.
Which mesh sizes are available?
Send target mesh size, SiO2 requirement, quantity and destination port for confirmation.
What is required for an accurate quote?
Send the grade or application, quantity, destination port, packing preference, governing standard and required documents.
Send the grade, quantity and destination port.
We will confirm price, packing, lead time and available batch documents for Silica Flour.