Diatomaceous Earth

As a filter aid it forms a precoat and body feed that hold fine solids in a permeable cake, giving clarity that a plain screen cannot reach. As an absorbent it carries liquids on a free-flowing dry base and controls moisture in blends. As a functional filler it contributes matting, texture and bulk to coatings and compounds. Because presentations differ substantially in permeability and abrasiveness, the grade is matched to the duty and confirmed by trial.

The duty decides the grade: filtration permeability, absorbency, abrasiveness and the calcination route each matter differently for clarifying a beverage, carrying a liquid on a dry base, or filling a coating. State the liquid or system, the clarity or absorption target, the process step, the flow rate and cycle where filtration is involved, and the documentation your sector requires — food, feed, potable water or industrial.

Diatomite and kieselguhr are alternative names for this material, not separate products. It is a natural sedimentary mineral and is distinct from the synthetic amorphous silicas — fumed, precipitated, colloidal and silica gel — which each have their own canonical pages, and from silica flour, which is ground crystalline quartz. Silica fume (microsilica) is unrelated. Filter aid, absorbent, feed, agricultural and industrial uses are applications of this one material and are handled inside this record; natural and calcined presentations are grade dimensions, not 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.