Silica Flour (Quartz Flour)

It acts as a functional filler and extender: raising hardness and abrasion resistance, reducing shrinkage and thermal movement, contributing to strength in cementitious systems, and adding body to coatings, polymers and ceramic bodies. In some cementitious systems it also participates chemically under heat. Loading and effect are established on your own formulation and equipment rather than taken from literature values.

Particle size distribution is the decision that matters most, and it is where conventions diverge: mesh, percentage passing a stated mesh, micron top cut and D50 from a named method describe the same powder in incompatible numbers. State the convention your specification uses, the loading you intend, the matrix it enters, and the colour, hardness or rheology behaviour you need to hold.

Graded silica sand is the coarse graded product and has its own canonical page on this catalogue; silica flour is the finely ground form of the same mineral and is bought for different reasons. Quartz flour, ground silica and micronised quartz are alternative names for this material, not separate products. Fumed, precipitated and colloidal silica are amorphous synthetic materials with their own pages; silica fume (microsilica) is a pozzolanic by-product and is a different material again despite the name. Mesh specifications — 200, 325, 400 or micronised — are specifications of this one record, never separate pages.

Suppliers report particle size in different conventions — mesh, percentage passing a stated mesh, micron top cut, or D50 from a named measurement method — and the numbers are not interchangeable between conventions. State the convention your specification uses, along with the property window you actually need, and comparison is made like for like. Moisture, pH, bulk density, swelling behaviour, heavy metals and any documentation requirement are reviewed the same way, against producer data for the grade offered.

This page asserts no purity, assay, mesh, micron, D50, brightness, swelling capacity, moisture, pH, bulk density, surface area, heavy-metal limit, origin, mine, packing, minimum quantity, certification, approval, availability, lead time or price. Every commercially meaningful value is taken from producer documentation for the exact grade offered and confirmed in writing before order.

Allzone sources this material through producer channels and quotes it per enquiry. Origin, mining location and processing location are selected against your technical requirement, quantity, documentation need and destination, and are stated in the offer rather than fixed by this page. Mineral powders have low value density, so freight, discharge point and packaging format move landed cost as much as the material price; quotations are compared delivered to your plant.

Technical data sheet, safety data sheet and certificate of analysis for the exact grade offered are requested from the producer and shared with the quotation. Mineral powders create airborne dust during transfer and bagging, and respirable crystalline silica content varies by material and by grade, so it is treated as an SDS and workplace-controls question for the specific grade rather than a figure published here. Where a declaration matters to your application — food contact, feed, potable water, cosmetic or regulatory — it is confirmed for that grade and intended use rather than assumed from this page.

Send the material or system it goes into, the process it runs on, the function you need it to perform, the property window your specification calls for in your own convention, the annual and per-shipment quantity, the packaging format your intake can receive, the documentation required per shipment and the delivery province or port. Several materials can be listed in one enquiry and reviewed together rather than split into separate requests.