Standard Grades

Our Magnetite is available in fine and coarse grades as well as mixtures of these grades. We maintain 0% Moisture in our Magnetite grades, while competitors maintain 8-9% Moisture. Each grade has a controlled particle size distribution. We design our grades in such a way that we ensure this natural mineral fits your application.

Dense Media Separation

Magnetite is used to produce dense medium slurry for coal washing, mineral processing and recycling of metals, scrap metal recovery.

Principles of heavy media gravity separation

Heavy media gravity separation means separating products with different densities. Magnetite and water are used to make a slurry on which one product will float (the product with a lower density than the slurry) and in which the other product will sink (the product with a higher density than the slurry). Hence the term sink-and-float separation is often used. Depending on the densities of the products that need separating, the ratio of magnetite and water in the slurry can be varied to achieve the required intermediate density. Using magnets, magnetite can be easily recovered from the waste and coal streams and then re- used in the coal separation circuit. Recycling the magnetite provides a cost saving to the operator, and is an environmentally conscious method of utilizing this valuable resource. About 90% of the magnetite can be recovered for reuse from the process, but the remaining 10% must be must be replaced.

In addition to coal producers, potash producers, gold, diamond mines also use heavy media separation systems.

Heat Storage

Our customers are using our natural iron oxide mineral because it can store heat very well. They are mixing our Magnetite since longtime in heat blocks in Night Storage Heaters.

Protection, Shielding, Refraction With Magnetite

Researchers are continuing to find new and powerful uses for magnetite-infused aggregates and concretes.

Since ancient Rome, concrete has been a wonder product, enabling the construction of both extensive, durable roads and massive structures that soar above our heads. Concrete has also proven to be a valuable material in the manufacturing field, where engineers have designed everything from small refractories to massive chambers out of concrete.

Recent research shows that magnetite aggregate in concrete allows the material to perform well at much higher temperatures than non-magnetite infused concrete. This discovery marks an important milestone for concrete, which previously was susceptible to cracking and degrading when subjected to extreme temperatures.

Magnetite aggregate is also a key component to protecting personnel and equipment from the harmful effects of gamma radiation. Long the go-to choice for reactor shielding, magnetite aggregate is added to concrete to increase density, which improves the performance of concrete shielding, blocking harmful radiation and preventing heat buildup, which can degrade concrete’s performance over time.

With magnetite aggregate heavy concretes, structures are stronger and safer longer than their non- magnetite counterparts.

Water Treatment

Cleaner, Safer Water is Possible with “PureMag”: PureMag, manufactured from the natural mineral Magnetite, is an iron source to produce coagulants and flocculants for the water treatment industry. PureMag helps to remove contaminates and toxins from water supplies.

Image: PureMag competes effectively with all forms of media and membrane filtration and conventional clarification, and is proven effective for:

Municipal applications: Primary treatment (chemically enhanced primary treatment)

Storm water/CSO (combined sewer overflow)-

Recycle-reuse applications

Reverse osmosis pretreatment

Drinking water

Heavy metals removal

Reservoir for high solids, algae, and phosphorus

Industrial applications:

Food and beverage

Oil and gas

Industrial make-up process water

Features

Easy to incorporate into any type of coagulation/flocculation process

Can use with any type of clarifier (circular, rectangular, inclined plate/tube settlers)

Recycling promotes sludge densification and solids contact for better flocculation and sweeping effect in clarifiers to enhance capture of colloidal particles.

PureMag is dense (2X more dense than silica sand), fully inert (NSF certified for DW applications), not abrasive and magnetically retrievable (high recovery rates.)

Key Benefits

Superior contaminant removal – Efficiently reduces total suspended solids (TSS), total phosphorus (TP), turbidity, color, pathogens, and metals far below conventional treatment, without the need for filters

Low costs – High-rate, ballasted clarification allows for smaller reaction and solids separation tanks, minimal power consumption and moderate chemical use

Easy incorporation – PureMag is easy to incorporate into existing tankage

Lower OPEX – Continuously recovers and reuses up to 98+% of the injected PurelMag, offering a sustainable process for lower OPEX

Process stability – Stability under shock loads – does not choke or plug; rapid startup and quick process optimization

Ultraviolet enabling – The high transmissivity of the PureMag System effluent reduces energy and operating costs of final purification

Heavy Concrete

Magnetite is a natural aggregate manufactured from the iron oxide Magnetite. With its high specific gravity Magnetite is used as a coarse material to produce heavyweight concrete. When used as the aggregate portion of a concrete mix, magnetite increases the density of the concrete to twice that of standard concrete. This “heavy concrete” is as common building material in radiation shielding (medical or nuclear plants). Beyond that, however, heavy concrete is used to make counter weights and as thermal mass in heat storage situations. With the correct mix design, high-density concrete can still achieve a good workability.

Magnetite acts as a “heat sink” by absorbing heat from its surroundings, storing it and releasing it slowly over a period of time. With Magnetite used as an aggregate in concrete, this effect will mean that the heat of hydration produced during curing will be absorbed and the maximum temperature attained within the concrete will be lower than with normal aggregates. The risk of thermal cracking, which is often associated with thick sections, is therefore reduced by incorporating Magnetite.

Applications using high density concrete

There are many applications that can benefit from heavy-weight concrete containing Magnetite. We see the use of heavy weight concrete in different industries:

Concrete Weight Coating For Offshore Pipelines

Concrete Weight Coatings are applied to Offshore Pipelines. Concrete Weight Coating on pipes ensures that gas and oil pipelines will not float (negative buoyancy) ones they are installed in sea and protects them against collision damage. To achieve concrete with a high density, mangnetite is added.

Applying offshore pipeline concrete coating

Our customers, manufacturers of coated pipelines, use two different techniques to apply the heavy concrete as a coating to the pipelines.

• Spray applied heavy concrete coating : This technique requires heavy concrete to be fluid enough to spray. Adding DenseMagna to the concrete will make it heavier, however, the concrete is still fluid enough to be sprayed onto the pipelines.
• Compression concrete weight coating : Using this applying method, the pipe gets a concrete weight coating by rolling the heavy concrete with a special technique against the pipeline.